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Sample records for assessment uri hydroelectric

  1. Environmental Impact Assessment: Uri hydroelectric power project on River Jhelum in Kashmir, India

    International Nuclear Information System (INIS)

    This report is an Initial Aquatic Environmental Impact Assessment of the Uri Hydroelectric Power Project on River Jhelum in Kashmir, India. It includes the Terms of Reference of the assessment, a discussion on biodiversity and threats to it, the environmental indicators used to monitor and predict the impacts, a description of the physical, chemical and biological prerequisites of the River Jhelum ecosystem, a description of the survey sites chosen, and an overview of the present fish and bottom fauna. Finally, there are sections on the potential impacts on biota of the Uri Project and a list of proposals for how mitigating and enhancing measures could be enforced

  2. Environmental Impact Assessment: Uri hydroelectric power project on River Jhelum in Kashmir, India

    Energy Technology Data Exchange (ETDEWEB)

    Nyman, L.

    1995-09-01

    This report is an Initial Aquatic Environmental Impact Assessment of the Uri Hydroelectric Power Project on River Jhelum in Kashmir, India. It includes the Terms of Reference of the assessment, a discussion on biodiversity and threats to it, the environmental indicators used to monitor and predict the impacts, a description of the physical, chemical and biological prerequisites of the River Jhelum ecosystem, a description of the survey sites chosen, and an overview of the present fish and bottom fauna. Finally, there are sections on the potential impacts on biota of the Uri Project and a list of proposals for how mitigating and enhancing measures could be enforced

  3. Normanskill Hydroelectric Facility Feasibility Assessment

    Energy Technology Data Exchange (ETDEWEB)

    Besha, J.A.

    1979-01-01

    A study was conducted to determine the feasibility of installing a hydroelectric generating facility at an existing dam of the Normanskill Reservoir in NY. Evaluation of the hydrologic, technical, economic, legal, instrumental and environmental factors led to the conclusion that the project is feasible and advantageous. The proposed project has a present worth net cost of $3,099,800. The benefit cost ratio is 2.36. It is estimated that the proposed hydroelectric generating facility at the French's Mills site, City of Watervliet Reservoir will replace approximately 6,000 barrels of foreign oil per year. (LCL)

  4. Feasibility assessment, Lowell Hydroelectric Project

    Energy Technology Data Exchange (ETDEWEB)

    1979-04-01

    The results are presented of a feasibility analysis for hydroelectric generating facilities on the Merrimack River at Lowell, Massachusetts. The projected facility would utilize the existing Pawtucket Dam and a portion of the existing Northern Canal. The project was examined for economic, engineering, and environmental viability, and the results are favorable. The owners intend to proceed to the next step of negotiating a firm power purchase agreement.

  5. Hydroelectricity

    International Nuclear Information System (INIS)

    A first article outlines that the hydroelectricity sector relies on a well-proven technology but remains a field for innovation: it respects the environment and is safe, flexible and reactive, and marine energies are a subject of research and development activities. A second article outlines that, from an economic point of view, it is the most cost effective renewable energy, and that only a third of its economically exploitable potential is actually exploited. An interview evokes the impact of energy production on water quality, the emergence of a water print as an assessment tool which could help the preservation of this resource, and the possible impact of climate change on hydroelectric energy production and on needs of water as a coolant

  6. Jackson Bluff Hydroelectric Project. Feasibility assessment report

    Energy Technology Data Exchange (ETDEWEB)

    1979-03-01

    A feasibility assessment study was conducted to determine if it is economical to reinstall hydroelectric generating units at the existing Jackson Bluff Dam on the Ochlockonee River in Florida. The studies and investigations have included site reconnaissance, system loads, growth rate, site hydrology, conceptual project arrangements and layouts, power output, estimates of construction costs and annual costs, economic analyses, development of a design and construction schedule and a preliminary environmental review of the proposed Project. It was concluded that the Project poses no unusual technical problems and no significant adverse environmental effects are anticipated. It shows sufficient promise of technical, economic and financial feasibility, to justify the City entering into the next phase of work, the FERC License Application, as soon as possible. The site can be restored for an investment of $9.9 to $10.4 million to establish 8.8 MW of capacity and produce 24,920 MWh of electrical energy annually, and in 10 years would save over $4 million as compared with current fuel costs for operating an oil-fueled power plant. (LCL)

  7. Risk assessment method of major unsafe hydroelectric project

    Institute of Scientific and Technical Information of China (English)

    WU ZhongRu; SU HuaiZhi; GUO HaiQing

    2008-01-01

    Based on the characteristics of major unsafe hydroelectric projects and the data from field detection, in situ monitoring, and regular safety inspection, the funda- menial principles of operation risk assessment are proposed in this paper. Mean- while, a three layer hierarchical system is constructed, and an improved analytical hierarchical process combining genetic algorithm and analytical hierarchical process is established, with corresponding program. The operation risk of some unsafe dam was assessed with the principles, method and program presented in this paper and the major factors which would affect the operation of the dam were pointed out.

  8. Risk assessment method of major unsafe hydroelectric project

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    Based on the characteristics of major unsafe hydroelectric projects and the data from field detection, in situ monitoring, and regular safety inspection, the funda-mental principles of operation risk assessment are proposed in this paper. Mean-while, a three layer hierarchical system is constructed, and an improved analytical hierarchical process combining genetic algorithm and analytical hierarchical process is established, with corresponding program. The operation risk of some unsafe dam was assessed with the principles, method and program presented in this paper and the major factors which would affect the operation of the dam were pointed out.

  9. Fella River (Italy) hydroelectric power plant environmental impacts assessment

    International Nuclear Information System (INIS)

    This procedure for the evaluation of the environmental impacts of a hydroelectric power plant on the Fella River (Udine, Italy) uses an original method with personal computer programs which allow a rapid data elaboration and detailed maps of local impacts. The knowledge gained from this application can be useful for similar applications which require a modification of water downflow. 8 refs., 4 figs

  10. Data collection and analysis in support of risk assessment for hydroelectric stations

    Energy Technology Data Exchange (ETDEWEB)

    Vo, T.V.; Mitts, T.M.; Phan, H.K.; Blackburn, T.R.; Casazza, L.O.

    1995-10-01

    This project is to provide the U.S. Army Corps of Engineers with a risk analysis that evaluates the non-routine closure of water flow through the turbines of powerhouses along the Columbia and Snake Rivers. The project is divided into four phases. Phase 1 efforts collected and analyzed relevant plant failure data for hydroelectric generating stations in the United States and Canada. Results from the Phase 1 efforts will be used to assess the risk (probability times consequences) associated with non-routine shut down of hydroelectric stations, which will be performed in the remaining phases of the project. Results of this project may be used to provide policy recommendations regarding operation and maintenance of hydroelectric stations. The methodology used to complete the Phase 1 of the project is composed of data collection and analysis activities. Data collection included performing site visits, conducting a data survey of hydroelectric stations, conducting an expert panel workshop, and reviewing and tabulating failure data from generic sources. Data analysis included estimating failure rates obtained from the survey data, expert judgment elicitation process, generic data, and combining these failure rates to produce final failure rate parameters. This paper summarizes the data collection analysis, results and discussions for the Phase 1 efforts.

  11. Micro and mini hydroelectric power assessment in Uruguay

    International Nuclear Information System (INIS)

    The School of Engineering in Montevideo, Uruguay, within the framework of Agreements made with the National Utility, has carried out an assessment of the potential and studies of the feasibility of the use of renewable energy for the generation of electrical power, both at the industrial level and the autonomous level for rural electrification. Original assessment methodologies were developed, including calculation tools which allow, for example, to analyze historical meteorological data, to calculate the available energy in different kinds of energy generators and also to stimulate the operation and design of autonomous systems with established load requirements and service quality. At the micro and mini hydropower assessment, the main role was placed on the census of potential users and the preliminary analysis of the representative places for the different technical solutions adequate to the variety of topographic conditions and load requirements. For power above 1 MW and up to 5 MW, the generating potential was assessed all over the country. If power lower than 1 MW or lower than 100kW (mini and micro) is considered, the information available in maps with contour lines, including in those of a 1:50,000 scale, is not enough to identify the most adequate places. Instead, knowledge of the place is indispensable in these cases. A preliminary plan of several installations was worked out. (Author)

  12. Interview with Professor Urie Bronfenbrenner.

    Science.gov (United States)

    Mercogliano, Chris; Leue, Mary

    1996-01-01

    Urie Bronfenbrenner, professor emeritus at Cornell University, discusses how changing American values have shaped an antifamily and individualistic society, and along with increasingly high rates of poverty, single parenthood, and violence, have negatively impacted families, children, and education. Also discusses declining literacy rates, school…

  13. Hydroelectricity and sustainable development

    International Nuclear Information System (INIS)

    From 1975 to 1992, hydroelectricity helped reduce greenhouse gas emissions in Quebec by 20%. For Hydro-Quebec, energy conservation and hydroelectric development are basic complementary tools for sustainable development. Recent studies show that developing only 50% of economically exploitable hydroelectric potential (30% of the gross theoretical potential) of different regions worldwide would considerably reduce greenhouse gas and SO2 emissions. However, hydroelectric systems produce environmental and social impacts locally that require mitigative measures. To fulfill its mandate in a sustainable development context, Hydro-Quebec has adopted methods such as integrated resource planning, the assessment of externalities, multi criteria decision tools and public participations

  14. The role of EIA [environmental impact assessment] in the hydroelectric planning process

    International Nuclear Information System (INIS)

    Several themes including the environmental assessment of hydroelectric projects, the participation of the public in such a process, and the institutional aspects of resource management have been combined in a study that documents and evaluates the selection, licensing, and implementation of the Revelstoke (British Columbia) Hydroelectric Dam under the 1960 Water Act. The study assesses to what extent the selection and licensing procedure of the current Energy Project Review Process (EPRP) in the case of the site C dam proposal overcame the shortcomings of the Revelstoke experience. In the Revelstoke case, shortcomings included the lack of provisions in the Water Act for project selection, justification, and implementation; inadequate project implementation under the administrative framework provided by the water license; and lack of a monitoring program to ensure compliance with environmental guidelines, regulations, and acts. The EPRP has effeciently dealt with some of the issues raised in the Revelstoke case while leaving others partly or entirely unaddressed. In contrast to the Water Act, the Energy Act with the EPRP prescribes a definite structure and procedural sequence for selection and licensing of large-scale energy projects. However, the EPRP does not detail all licensing procedures and lacks provisions for some of the major procedures of project implementation and operation. Post-development analysis is not a requirement for either energy project certificates or energy operating certificates. Recommendations are made to improve the EPRP. 128 refs., 8 figs., 9 tabs

  15. Assessment and statistics of Brazilian hydroelectric power plants: Dam areas versus installed and firm power

    International Nuclear Information System (INIS)

    The Brazilian relief, predominantly composed by small mountains and plateaus, contributed to formation of rivers with high amount of falls. With exception to North-eastern Brazil, the climate of this country are rainy, which contributes to maintain water flows high. These elements are essential to a high hydroelectric potential, contributing to the choice of hydroelectric power plants as the main technology of electricity generation in Brazil. Though this is a renewable source, whose utilized resource is free, dams must to be established which generates a high environmental and social impact. The objective of this study is to evaluate the impact caused by these dams through the use of environmental indexes. These indexes are ratio formed by installed power with dam area of a hydro power plant, and ratio formed by firm power with this dam area. In this study, the greatest media values were found in South, Southeast, and Northeast regions respectively, and the smallest media values were found in North and Mid-West regions, respectively. The greatest encountered media indexes were also found in dams established in the 1950s. In the last six decades, the smallest indexes were registered by dams established in the 1980s. These indexes could be utilized as important instruments for environmental impact assessments, and could enable a dam to be established that depletes an ecosystem as less as possible. (author)

  16. The urgency of assessing the greenhouse gas budgets of hydroelectric reservoirs in China

    Science.gov (United States)

    Hu, Yuanan; Cheng, Hefa

    2013-08-01

    Already the largest generator of hydroelectricity, China is accelerating dam construction to increase the share of hydroelectricity in its primary energy mix to reduce greenhouse gas emissions. Here, we review the evidence on emissions of GHGs, particularly methane, from the Three Gorges Reservoir, and argue that although the hydroelectric reservoirs may release large amounts of methane, they contribute significantly to greenhouse gas reduction by substitution of thermal power generation in China. Nonetheless, more systematic monitoring and modelling studies on greenhouse gas emissions from representative reservoirs are necessary to better understand the climate impact of hydropower development in China.

  17. Hydroelectric project EA's [environmental assessments]: The Magpie development in northern Ontario

    International Nuclear Information System (INIS)

    Great Lakes Power recently constructed a hydroelectric plant on the Magpie River near Wawa, Ontario. The project involved three main elements: construction of a 33 m high dam, a 15.5 MW power station, and a spillway at Steephill Falls; construction of a 3.5 m high overflow weir just above the crest of scenic Magpie Falls, creating a head pond to supply a 15 MW power plant; and construction of a weir and 15 MW power plant at Mission Falls. Although this was a private development and therefore not automatically subject to Ontario's Environmental Assessment Act, Great Lakes Power decided to conform with the act's requirements and undertook a comprehensive environmental assessment (EA). Environmental issues were focused on changes in hydrology and water quality, impacts on fisheries and natural resources, slope stability and erosion, socioeconomic impacts, impacts on heritage resources, and impacts on tourism and recreation. The project was approved subject to conditions which included implementation of mitigation and monitoring requirements outlined in the EA document. Environmental specialists worked closely with the engineers at the detailed design stage of the project, resulting in modifications to the preliminary design to minimize environmental impacts

  18. A modelling methodology for assessing the impact of climate variability and climatic change on hydroelectric generation

    International Nuclear Information System (INIS)

    A new methodology relating basic climatic variables to hydroelectric generation was developed. The methodology can be implemented in large or small basins with any number of hydro plants. The method was applied to the Sacramento, Eel and Russian river basins in northern California where more than 100 hydroelectric plants are located. The final model predicts the availability of hydroelectric generation for the entire basin provided present and near past climate conditions, with about 90% accuracy. The results can be used for water management purposes or for analyzing the effect of climate variability on hydrogeneration availability in the basin. A wide range of results can be obtained depending on the climate change scenario used. (Author)

  19. Environment and hydroelectricity colloquium - Synthesis

    International Nuclear Information System (INIS)

    This document proposes a synthesis of a colloquium dedicated to the interactions between hydroelectric installations and the environment. The four sessions respectively addressed the impacts of hydroelectric installations on ecosystems and more particularly on pisciculture populations (strategies for migration restoration, development of fish-friendly turbines), the sedimentary management of hydroelectric installations, the implementation of the Water Framework European Directive (Austrian experience, biological assessment criteria), and examples of environmental integration of existing or projected installations

  20. Assessment of the feasibility of recommissioning the French Landing Hydroelectric Facility in Van Buren Township, Michigan. Final report

    Energy Technology Data Exchange (ETDEWEB)

    1979-02-01

    The results of a study of the feasibility of recommissioning a small, low-head hydroelectric facility in southeastern Michigan are presented. The study concludes that there are several cost-effective designs for recommissioning the site, based on the use of vertical turbines and the sale of power to nearby industrial markets. In terms of the bulk sale of power to the local electric utility, no cost-effective alternatives were found to exist. A major burden on project cost-effectiveness was found to be the relatively large costs for structural repairs to the dam and powerhouse needed to insure safe operation and on adequate service life. From an engineering standpoint it was found that the items of equipment needed to recommission the site are readily available from both US and foreign manufacturers. A variety of hydraulic turbine designs could be successfully adapted to the existing powerhouse, without extensive new construction. It was determined that the production capacity of the facility had an important influence on the cost-effectiveness of the project. A detailed benefit/cost analysis was conducted to identify the optimum facility size in terms of incremental costs and revenues. A detailed environmental assessment using an impact matrix methodology concluded that the development of the facility for hydroelectric generation would have important positive environmental consequences related to improved impoundment and flow management techniques as well as enhanced public safety due to structural repairs to the dam. The institutional and regulatory implications of developing the site for hydroelectric generation were found to be significant but manageable.

  1. Taxing Hydroelectricity in Ontario

    OpenAIRE

    David W. Gillen; Jean-François Wen

    2000-01-01

    Using data from the financial statements of Ontario Hydro and an observed cost of importing electricity to the province, we provide an estimate of the hydroelectric rent that is potentially available in Ontario as tax revenue. Our results suggest that the existing water charges in Ontario can be raised ten-fold to capture this rent. We assess the impact that fully taxing the rent would have on the prices of electricity and manufacturing products, given that a substantial portion of the potent...

  2. The Application of Traits-Based Assessment Approaches to Estimate the Effects of Hydroelectric Turbine Passage on Fish Populations

    Energy Technology Data Exchange (ETDEWEB)

    Cada, Glenn F [ORNL; Schweizer, Peter E [ORNL

    2012-04-01

    One of the most important environmental issues facing the hydropower industry is the adverse impact of hydroelectric projects on downstream fish passage. Fish that migrate long distances as part of their life cycle include not only important diadromous species (such as salmon, shads, and eels) but also strictly freshwater species. The hydropower reservoirs that downstream-moving fish encounter differ greatly from free-flowing rivers. Many of the environmental changes that occur in a reservoir (altered water temperature and transparency, decreased flow velocities, increased predation) can reduce survival. Upon reaching the dam, downstream-migrating fish may suffer increased mortality as they pass through the turbines, spillways and other bypasses, or turbulent tailraces. Downstream from the dam, insufficient environmental flow releases may slow downstream fish passage rates or decrease survival. There is a need to refine our understanding of the relative importance of causative factors that contribute to turbine passage mortality (e.g., strike, pressure changes, turbulence) so that turbine design efforts can focus on mitigating the most damaging components. Further, present knowledge of the effectiveness of turbine improvements is based on studies of only a few species (mainly salmon and American shad). These data may not be representative of turbine passage effects for the hundreds of other fish species that are susceptible to downstream passage at hydroelectric projects. For example, there are over 900 species of fish in the United States. In Brazil there are an estimated 3,000 freshwater fish species, of which 30% are believed to be migratory (Viana et al. 2011). Worldwide, there are some 14,000 freshwater fish species (Magurran 2009), of which significant numbers are susceptible to hydropower impacts. By comparison, in a compilation of fish entrainment and turbine survival studies from over 100 hydroelectric projects in the United States, Winchell et al. (2000

  3. Assessment of Heavy Metals in Water, Sediment, and Fishes of a Large Tropical Hydroelectric Dam in Sarawak, Malaysia

    Directory of Open Access Journals (Sweden)

    Siong Fong Sim

    2016-01-01

    Full Text Available Bakun Hydroelectric Dam in Sarawak is one of the world highest concrete rock filled dams. This paper reports the heavy metals concentrations in water, sediment, and fishes of Bakun Dam. Water and sediment samples were collected from 11 stations and 6 fish species were caught. The samples were digested with open acid digestion and the metals contents were analysed using an atomic absorption spectrophotometer and mercury analyser. The method was validated based on certified reference materials. A higher concentration of Fe and Mn was detected in downstream water with significant longitudinal variation. Cu, Zn, and Hg were present in trace amount. All elements analysed were consistently found in sediment with no risk of contamination. For fish, Hemibagrus planiceps was characterised by higher affinity for Hg accumulation. The concentrations detected in all fish species were within the permissible guideline of 0.5 mg/kg. The health risk assessment suggested that Barbonymus schwanenfeldii, Puntioplites waandersii, Cyclocheilichthys apogon, and Hemibagrus planiceps were characterised by hazard index > 1 implying possible adverse effects. The amount of fish recommended for adults and children was in the range of 500–775 g/week and 33–135 g/week, respectively.

  4. Efficiency assessment of hydroelectric power plants in Canada: A multi criteria decision making approach

    OpenAIRE

    Bing Wang; Ioan Nistor; Tad Murty; Yi-Ming Wei

    2014-01-01

    Hydropower plays a major role in the Canadian electricity generation industry. Few attempts have been made, however, to assess the efficiency of hydropower generation in Canada. This paper analyzes the overall efficiency of hydropower generation in Canada from comprehensive viewpoints of electricity generating capability, its profitability, as well as environmental benefits and social responsibility using the TOPSIS (the Technique for Order Preference by Similarity to Ideal Solution) method. ...

  5. Assessment of Spatial Interpolation Methods to Map the Bathymetry of an Amazonian Hydroelectric Reservoir to Aid in Decision Making for Water Management

    Directory of Open Access Journals (Sweden)

    Marcelo Curtarelli

    2015-02-01

    Full Text Available The generation of reliable information for improving the understanding of hydroelectric reservoir dynamics is fundamental for guiding decision-makers to implement best management practices. In this way, we assessed the performance of different interpolation algorithms to map the bathymetry of the Tucuruí hydroelectric reservoir, located in the Brazilian Amazon, as an aid to manage and operate Amazonian reservoirs. We evaluated three different deterministic and one geostatistical algorithms. The performance of the algorithms was assessed through cross-validation and Monte Carlo Simulation. Finally, operational information was derived from the bathymetric grid with the best performance. The results showed that all interpolation methods were able to map important bathymetric features. The best performance was obtained with the geostatistical method (RMSE = 0.92 m. The information derived from the bathymetric map (e.g., the level-area and level-volume diagram and the three-dimensional grid will allow for optimization of operational monitoring of the Tucuruí hydroelectric reservoir as well as the development of three-dimensional modeling studies.

  6. Medico-ecological study and health impact assessment of hydro-electric projects in Malaysia

    International Nuclear Information System (INIS)

    The objectives of this studies were to determine i) if there was any potential health risks in terms of spread of vector-borne and other communicable diseases resulting from the changes in the environment due to creation of large bodies of water as consequence of the construction of dams, ii) diseases of public health importance in populations affected by such projects. Nine pre-impoundment studies had been carried out and potential impact of the change in environment on discases and health of the affected populations in each areas was evaluated. Risk of infections to the dam construction workers also assessed. Recommendations on mitigation measures were made for each situation so that adequate provisions could be made to improve the health conditions of these populations especially those who would be resettled as a result of impoundment . Prevention and control measures on transmission of infection, including vector control were proposed. The potential medico-ecological hazards encountered by immigrants and visitors to the area on completion of the hydro project were also envisaged

  7. Assessment of Heavy Metals in Water, Sediment, and Fishes of a Large Tropical Hydroelectric Dam in Sarawak, Malaysia

    OpenAIRE

    Siong Fong Sim; Teck Yee Ling; Lee Nyanti; Norliza Gerunsin; Yiew Ee Wong; Liang Ping Kho

    2016-01-01

    Bakun Hydroelectric Dam in Sarawak is one of the world highest concrete rock filled dams. This paper reports the heavy metals concentrations in water, sediment, and fishes of Bakun Dam. Water and sediment samples were collected from 11 stations and 6 fish species were caught. The samples were digested with open acid digestion and the metals contents were analysed using an atomic absorption spectrophotometer and mercury analyser. The method was validated based on certified reference materials....

  8. Hydroelectric Power Plants Dobsina

    International Nuclear Information System (INIS)

    In this brochure the Hydroelectric Power Plants Dobsina, (VED), subsidiary of the utility Slovenske Elektrarne, a.s. (Slovak Electric, plc. Bratislava) are presented. VED is mainly aimed at generating peak-load electrical energy and maintenance of operational equipment. Reaching its goals, company is first of all focused on reliability of production, economy and effectiveness, keeping principles of work safety and industry safety standards and also ecology. VED operates eight hydroelectric power plants, from which PVE Ruzin I and PVE Dobsina I are pump storage ones and they are controlled directly by the Slovak Energy Dispatch Centre located in Zilina thought the system LS 3200. Those power plants participate in secondary regulation of electrical network of Slovakia. They are used to compensate balance in reference to foreign electrical networks and they are put into operation independently from VED. Activity of the branch is focused mainly on support of fulfilment of such an important aim as electric network regulation. Beginnings of the subsidiary Hydroelectric Power Plants Dobsina are related to the year of 1948. After commissioning of the pump storage Hydroelectric Power Plants Dobsina in 1953, the plant started to carry out its mission. Since that time the subsidiary has been enlarged by other seven power plants, through which it is fulfilling its missions nowadays. The characteristics of these hydroelectric power plants (The pump-storage power plant Dobsina, Small hydroelectric power plant Dobsina II, Small hydroelectric power plant Rakovec, Small hydroelectric power plant Svedlar, Hydroelectric power plant Domasa, The pump-storage power plant Ruzin, and Small hydroelectric power plant Krompachy) are described in detail. Employees welfare and public relations are presented

  9. Small hydroelectric engineering practice

    CERN Document Server

    Leyland, Bryan

    2014-01-01

    Small Hydroelectric Engineering Practice is a comprehensive reference book covering all aspects of identifying, building, and operating hydroelectric schemes between 500 kW and 50 MW. In this range of outputs there are many options for all aspects of the scheme and it is very important that the best options are chosen.As small hydroelectric schemes are usually built against a limited budget it is extremely important that the concept design is optimum and every component is designed to maximise the benefi t and minimise the cost. As operating costs are often a high proportion of the income it i

  10. Assessment Planning and Evaluation of Renewable Energy Resources: an Interactive Computer Assisted Procedure. [hydroelectricity, biomass, and windpower in the Pittsfield metropolitan region, Massachusetts

    Science.gov (United States)

    Aston, T. W.; Fabos, J. G.; Macdougall, E. B.

    1982-01-01

    Adaptation and derivation were used to develop a procedure for assessing the availability of renewable energy resources on the landscape while simultaneously accounting for the economic, legal, social, and environmental issues required. Done in a step-by-step fashion, the procedure can be used interactively at the computer terminals. Its application in determining the hydroelectricity, biomass, and windpower in a 40,000 acre study area of Western Massachusetts shows that: (1) three existing dam sites are physically capable of being retrofitted for hydropower; (2) each of three general areas has a mean annual windspeed exceeding 14 mph and is conductive to windpower; and (3) 20% of the total land area consists of prime agricultural biomass while 30% of the area is prime forest biomass land.

  11. Hydroelectricity and territories

    International Nuclear Information System (INIS)

    On our river territories, the development of renewable energy and the restoration of the quality of the aquatic ecosystems both illustrate the need to reconcile the different usages of water resources while still guaranteeing proper functioning of the ecosystems. Hydroelectricity is the crux of the problem. Because of its mountainous hydrographic network and its favourable hydrology, the Adour-Garonne basin witnessed large-scale development of its hydroelectric potential throughout the 20. century. Approaching the question of hydroelectricity from the point of view of the river territories puts all the challenges facing them into their true perspective. Two distinct examples in the Adour-Garonne basin illustrate the partnership between the Water Agency and the local authorities in the Garonne and Dordogne basins: on the Garonne River, reconciling water usages with the maintenance of adequate water levels at times of drought; on the Dordogne River, reducing the impact of the hydro-peaking. (authors)

  12. Small hydroelectric power plants

    International Nuclear Information System (INIS)

    Small hydroelectric power plants are power plants of 1 - 10 MW. For a supplier, this is an unnatural limit. A more natural limit involves compact engine design and simplified control system. The article discusses most of the engine and electrotechnical aspects in the development, construction and operation of such a plant

  13. Integrated use of antioxidant enzymes and oxidative damage in two fish species to assess pollution in man-made hydroelectric reservoirs

    International Nuclear Information System (INIS)

    This study investigated the relationship between contaminant body burden and the oxidative stress status of the gills and livers of two wild fish species in the Furnas Hydroelectric Power Station (HPS) reservoir (Minas Gerais, Brazil). Gills and livers presented similar pathways of metals and organochlorine bioaccumulation. During June, organochlorines were associated with lipid peroxidation (LPO), indicating oxidative stress due to the inhibition of the antioxidant enzymes superoxide dismutase and glutathione peroxidase. In the most polluted areas, metal concentrations in the liver were associated with metallothionein. During December, contaminants in the gills and liver were associated with catalase activity and LPO. Aldrin/dieldrin was the contaminant most associated with oxidative damage in the livers of both species. This integrated approach shed light on the relationship between adverse biological effects and bioaccumulation of contaminants inputted by intensive agricultural practices and proved to be a suitable tool for assessing the environmental quality of man-made reservoirs. -- Highlights: ► Metals and organochlorines presented similar pathways of bioaccumulation. ► Organochlorines were associated to enzyme inhibition and LPO in June. ► Metal concentrations were associated to metallothionein in the liver. ► Contaminants were associated to catalase activity and LPO in December. ► Aldrin/Dieldrin was the contaminant more strongly associated to LPO. -- In realistic environmental conditions, a mix of organochlorines and metals inhibited antioxidant defenses, causing oxidative stress in wild fish species

  14. Precipitation Estimates for Hydroelectricity

    Science.gov (United States)

    Tapiador, Francisco J.; Hou, Arthur Y.; de Castro, Manuel; Checa, Ramiro; Cuartero, Fernando; Barros, Ana P.

    2011-01-01

    Hydroelectric plants require precise and timely estimates of rain, snow and other hydrometeors for operations. However, it is far from being a trivial task to measure and predict precipitation. This paper presents the linkages between precipitation science and hydroelectricity, and in doing so it provides insight into current research directions that are relevant for this renewable energy. Methods described include radars, disdrometers, satellites and numerical models. Two recent advances that have the potential of being highly beneficial for hydropower operations are featured: the Global Precipitation Measuring (GPM) mission, which represents an important leap forward in precipitation observations from space, and high performance computing (HPC) and grid technology, that allows building ensembles of numerical weather and climate models.

  15. Hydroelectric power and privatisation

    International Nuclear Information System (INIS)

    The paper considers privatisation aspects of both the existing hydroelectric power plants presently owned by the Croatian state and those to be built in the future. The paper highlights the water power utilisation as just one of the possible purposes of water and land resources development, which are the most important segment of the physical development of the Croatian territory, and the fact that water and land are public wealth. (author)

  16. A new approach to assessing the water footprint of hydroelectric power based on allocation of water footprints among reservoir ecosystem services

    Science.gov (United States)

    Zhao, Dandan; Liu, Junguo

    Hydroelectric power is an important energy source to meet the growing demand for energy, and large amounts of water are consumed to generate this energy. Previous studies often assumed that the water footprint of hydroelectric power equaled the reservoir's water footprint, but failed to allocate the reservoir water footprint among the many beneficiaries; dealing with this allocation remains a challenge. In this study, we developed a new approach to quantify the water footprint of hydroelectric power (WFh) by separating it from the reservoir water footprint (WF) using an allocation coefficient (ηh) based on the ratio of the benefits from hydroelectric power to the total ecosystem service benefits. We used this approach in a case study of the Three Gorges Reservoir, the world's largest reservoir, which provides multiple ecosystem services. We found large differences between the WFh and the water footprint of per unit of hydroelectric production (PWFh) calculated using ηh and those calculated without this factor. From 2003 to 2012, ηh decreased sharply (from 0.76 in 2005 to 0.41 in 2012), which was due to the fact that large increases in the value of non-energy ecosystem services, and particularly flood control. In 2009, flood control replaced hydroelectricity as the largest ecosystem service of water from the Three Gorges Reservoir. Using our approach, WFh and PWFh averaged 331.0 × 106 m3 and 1.5 m3 GJ-1, respectively. However, these values would almost double without allocating water footprints among different reservoir ecosystem services. Thus, previous studies have overestimated the WFh and PWFh of reservoirs, especially for reservoirs that serve multiple purposes. Thus, the allocation coefficient should not be ignored when calculating the WF of a product or service.

  17. Harrisburg hydroelectric project

    International Nuclear Information System (INIS)

    The Harrisburg Hydroelectric Project is a proposed 34.4 MW hydroelectric facility on the Susquehanna River near Harrisburg, Pennsylvania. The 401 Water Quality Certificate application was submitted to the Pennsylvania Department of Environmental Resources and denied. The Water Quality Certificate was denied on issues that related to wetlands and aquatic habitat, ground water, combined sewer overflows, aquatic resources, upstream and downstream migration of fish, sediment, and failure to demonstrate there will be no water quality impacts. The City of Harrisburg elected to appeal the denial to the Pennsylvania environmental Hearing Board. This paper describes the 401 certification appeal process, the significant issues raised during the proceedings, and the extensive water quality and hydraulic studies conducted as part of the project. During the course of the appeal process, a motion was filed with the Commonwealth Court of Pennsylvania to rule on the issues to be addressed when reviewing an application for a 401 Water Quality Certificate. The Court's resulting ruling limited 401 certifications to only water quality issues

  18. Proposed Dunvegan hydroelectric project

    International Nuclear Information System (INIS)

    A new hydroelectric project is being proposed on the Peace River in the vicinity of Dunvegan, Alberta, by Glacier Power. The proposal calls for a low head, run-of-the-river hydroelectric power plant which would comprise a powerhouse containing 40 Kaplan turbines, a weir section, two fishways and a boat lock. The capacity of the generating plant would be 80 MW. As per established guidelines, the review process was initiated in July 1999 and is ongoing. Stakeholders, government agencies, both at the federal and provincial levels, are involved in the review process. The potential effects on the ice regime, fish passage and fish mortality and bank stability are the issues that have warranted the most attention to date. Scheduled to begin on October 2, 2001, a public hearing on the project has been arranged by the Alberta Energy and Utilities Board. The objective sought by Glacier Power is to have the project certified as being a green-power plant. Green power is defined as power produced from renewable sources with low environmental impact. The production of power with minimal environmental impacts is being encouraged in Alberta by Glacier Power, which sells power for a premium. 6 refs., 4 figs

  19. Projects for small hydro-power installations in the Canton of Uri, Switzerland; Kanton Uri. Projekte fuer Kleinwasserkraftwerke - Vorstudie

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2009-11-15

    This report for the Swiss Federal Office of Energy (SFOE) on a preliminary study presents and discusses small-hydro projects at three locations in the Swiss Canton of Uri. Three of originally six potential locations were selected for further investigation. Factors such as the usable quantities of water available at the locations are discussed. The projects Brunnital, Gruonbach and Palanggenbach are discussed in detail. Water quantities and various components of the installations such as water intakes, de-sanding installations, pressure conduits, machine houses and tailrace channels are described, as is the electro-mechanical equipment proposed. Also, environmental aspects are dealt with. Annual electricity production and economic viability are further topics covered in the report.

  20. Underground pumped hydroelectric storage

    Energy Technology Data Exchange (ETDEWEB)

    Allen, R.D.; Doherty, T.J.; Kannberg, L.D.

    1984-07-01

    Underground pumped hydroelectric energy storage was conceived as a modification of surface pumped storage to eliminate dependence upon fortuitous topography, provide higher hydraulic heads, and reduce environmental concerns. A UPHS plant offers substantial savings in investment cost over coal-fired cycling plants and savings in system production costs over gas turbines. Potential location near load centers lowers transmission costs and line losses. Environmental impact is less than that for a coal-fired cycling plant. The inherent benefits include those of all pumped storage (i.e., rapid load response, emergency capacity, improvement in efficiency as pumps improve, and capacity for voltage regulation). A UPHS plant would be powered by either a coal-fired or nuclear baseload plant. The economic capacity of a UPHS plant would be in the range of 1000 to 3000 MW. This storage level is compatible with the load-leveling requirements of a greater metropolitan area with population of 1 million or more. The technical feasibility of UPHS depends upon excavation of a subterranean powerhouse cavern and reservoir caverns within a competent, impervious rock formation, and upon selection of reliable and efficient turbomachinery - pump-turbines and motor-generators - all remotely operable.

  1. Analysis of URI Nuclear Interaction with RPB5 and Components of the R2TP/Prefoldin-Like Complex

    Science.gov (United States)

    Mita, Paolo; Savas, Jeffrey N.; Ha, Susan; Djouder, Nabil; Yates, John R.; Logan, Susan K.

    2013-01-01

    Unconventional prefoldin RPB5 Interactor (URI) was identified as a transcriptional repressor that binds RNA polymerase II (pol II) through interaction with the RPB5/POLR2E subunit. Despite the fact that many other proteins involved in transcription regulation have been shown to interact with URI, its nuclear function still remains elusive. Previous mass spectrometry analyses reported that URI is part of a novel protein complex called R2TP/prefoldin-like complex responsible for the cytoplasmic assembly of RNA polymerase II. We performed a mass spectrometry (MS)-based proteomic analysis to identify nuclear proteins interacting with URI in prostate cells. We identified all the components of the R2TP/prefoldin-like complex as nuclear URI interactors and we showed that URI binds and regulates RPB5 protein stability and transcription. Moreover, we validated the interaction of URI to the P53 and DNA damage-Regulated Gene 1 (PDRG1) and show that PDRG1 protein is also stabilized by URI binding. We present data demonstrating that URI nuclear/cytoplasmic shuttling is affected by compounds that stall pol II on the DNA (α-amanitin and actinomycin-D) and by leptomycin B, an inhibitor of the CRM1 exportin that mediates the nuclear export of pol II subunits. These data suggest that URI, and probably the entire R2TP/prefoldin-like complex is exported from the nucleus through CRM1. Finally we identified putative URI sites of phosphorylation and acetylation and confirmed URI sites of post-transcriptional modification identified in previous large-scale analyses the importance of which is largely unknown. However URI post-transcriptional modification was shown to be essential for URI function and therefore characterization of novel sites of URI modification will be important to the understanding of URI function. PMID:23667685

  2. Assessment of Diversity, Distribution, Conservation Status and Preparation of Management Plan for Medicinal Plants in the Catchment Area of Parbati Hydroelectric Project Stage -Ⅲ in Northwestern Himalaya

    Institute of Scientific and Technical Information of China (English)

    S.S. Samant; Jitendra S. Butola; Aman Sharma

    2007-01-01

    The developmental activities, particularly the construction of hydroelectric projects are causing a great loss of biodiversity in the Indian Himalayan Region. The Himachal Pradesh, a part of IHR is well known for the development of hydroelectric projects.The Parbati H.E. Project is amongst the major projects of the State. The different stages of the project are all causing loss of biodiversity of the area.Stage Ⅲ of the Parbati H.E. Project is a run of the river scheme on the Sainj River downstream of Power House of Parbati H.E. Project Stage Ⅱ. The project shall utilize regulated discharge of Parbati H.E.Project Stage Ⅱ and inflow of River Sainj for power generation, and has been contemplated as a peaking station operating in tandem with Stage Ⅱ. The present study has been undertaken to see the impact of hydroelectric project on the biodiversity, particularly on medicinal plants. A total of 104 species of medicinal plants, belonging to different life forms, i.e.,trees (23 spp.), shrubs (22 spp.), herbs (57 spp.) and ferns (2 spp.) were recorded. The species have been analyzed and studied for their distribution,classification, altitudinal zones, part (s) used,indigenous uses, nativity, endemism and rarity.Different parts of these species, such as whole plants,roots (including rhizomes and tubers), leaves, flowers,fruits, seeds, stems, barks, spikes, nuts and insect galls are used by the inhabitants for curing various diseases and ailments. 30 species are native to the Himalayan region, 9 species native to the Himalayan region and adjacent countries also and 65 species are non-natives. 9 species are near endemics. Considering the whole Himalaya as a biogeographic unit (sensu lato),the near endemics are endemic to the Himalaya.Among these species, Zanthoxylum armatum is categorized as Endangered and Valeriana wallichii as Vulnerable. Hedychium spicatum, Rhus javanica,Berberis lycium, Thalictrum foliolossum, Salvia lanata, Rubia cordifolia and Bergenia

  3. 76 FR 61689 - Sutton Hydroelectric Company, LLC

    Science.gov (United States)

    2011-10-05

    ... From the Federal Register Online via the Government Publishing Office ] DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Sutton Hydroelectric Company, LLC Notice of Site Visit On February 6, 2008, Sutton Hydroelectric Company, LLC (Sutton Hydroelectric) filed a notice of intent and...

  4. Central hydroelectric of Santa Ana

    International Nuclear Information System (INIS)

    The paper is related to the construction of an alternating tunnel of conduction to take advantage of the available hydraulic load among the Wiesner Plant and Santa Ana's tanks and of Suba, works required to build a hydroelectric power station with a generation capacity of approximately of 12 MW

  5. Energy Perspective: Is Hydroelectricity Green?

    Science.gov (United States)

    Childress, Vincent W.

    2009-01-01

    The current worldwide concern over energy is primarily related to imported oil, oil drilling and refining capacity, and transportation capacity. However, this concern has bolstered interest in a broader range of "green" energy technologies. In this article, the author discusses the use of hydroelectricity as an alternative energy source and…

  6. The impact of climate change on hydro-electricity generation

    International Nuclear Information System (INIS)

    Hydroelectricity is a clean and renewable energy source for many countries, and is expected to play an important role in future energy supplies. However, the impact of climatic change on hydroelectricity resources is not yet understood. This study provided a critical review of current methods used to determine the potential impacts of climatic change on hydroelectric power production. General circulation models (GCMs) are used to predict future climate conditions under various greenhouse gas (GHG) emissions scenarios. Statistical techniques are then used to down-scale GCM outputs to the appropriate scales needed for hydrological models, which are then used to simulate the effects of climatic change at regional and local scales. Outputs from the models are then used to develop water management models for hydroelectric power production. Observed linear trends in annual precipitation during the twentieth century were provided. The theoretical advantages and disadvantages of various modelling techniques were reviewed. Risk assessment strategies for Hydro-Quebec were also outlined and results of the study will be used to guide research programs for the hydroelectric power industry. refs., tabs., figs

  7. Forced response analysis of hydroelectric systems

    Science.gov (United States)

    Alligné, S.; Silva, P. C. O.; Béguin, A.; Kawkabani, B.; Allenbach, P.; Nicolet, C.; Avellan, F.

    2014-03-01

    At off-design operating points, Francis turbines develop cavitation vortex rope in the draft tube which may interact with the hydraulic system. Risk resonance assessment by means of eigenmodes computation of the system is usually performed. However, the system response to the excitation source induced by the cavitation vortex rope is not predicted in terms of amplitudes and phase. Only eigenmodes shapes with related frequencies and dampings can be predicted. Besides this modal analysis, the risk resonance assessment can be completed by a forced response analysis. This method allows identifying the contribution of each eigenmode into the system response which depends on the system boundary conditions and the excitation source location. In this paper, a forced response analysis of a Francis turbine hydroelectric power plant including hydraulic system, rotating train, electrical system and control devices is performed. First, the general methodology of the forced response analysis is presented and validated with time domain simulations. Then, analysis of electrical, hydraulic and hydroelectric systems are performed and compared to analyse the influence of control structures on pressure fluctuations induced by cavitation vortex rope.

  8. Forced response analysis of hydroelectric systems

    International Nuclear Information System (INIS)

    At off-design operating points, Francis turbines develop cavitation vortex rope in the draft tube which may interact with the hydraulic system. Risk resonance assessment by means of eigenmodes computation of the system is usually performed. However, the system response to the excitation source induced by the cavitation vortex rope is not predicted in terms of amplitudes and phase. Only eigenmodes shapes with related frequencies and dampings can be predicted. Besides this modal analysis, the risk resonance assessment can be completed by a forced response analysis. This method allows identifying the contribution of each eigenmode into the system response which depends on the system boundary conditions and the excitation source location. In this paper, a forced response analysis of a Francis turbine hydroelectric power plant including hydraulic system, rotating train, electrical system and control devices is performed. First, the general methodology of the forced response analysis is presented and validated with time domain simulations. Then, analysis of electrical, hydraulic and hydroelectric systems are performed and compared to analyse the influence of control structures on pressure fluctuations induced by cavitation vortex rope

  9. Assessment of spermatogenesis and plasma sex steroids in a seasonal breeding teleost: a comparative study in an area of influence of a tributary, downstream from a hydroelectric power dam, Brazil.

    Science.gov (United States)

    Domingos, Fabricio F T; Thomé, Ralph G; Arantes, Fabio P; Castro, Antonio Carlos S; Sato, Yoshimi; Bazzoli, Nilo; Rizzo, Elizete

    2012-12-01

    River damming and building of hydroelectric power plants interrupt the reproductive migration routes and change the major physicochemical parameters of water quality, with drastic consequences for populations of migratory fishes. The goal of this study was to evaluate proliferation and cell death during spermatogenesis and serum profiles of sex steroids in Prochilodus argenteus, from the São Francisco River, downstream from the Três Marias Dam. A total of 257 adult males were caught quarterly during a reproductive cycle in two sites: the first 34 km of the river after the dam (site 1) and the second 34-54 km after the dam (site 2), after the confluence with a tributary, the Abaeté River. Seasonal changes in the testicular activity associated with morphometric analyses of germ cells as well as proliferation and testicular apoptosis support a more active spermatogenesis in fish from site 2, where higher levels of sex steroids and gonadosomatic index (GSI) were also found. In site 1, fish presented low serum levels of testosterone, 17β-estradiol and 17α-hydroxyprogesterone and a low GSI during gonadal maturation. Spermatogonial proliferation (PCNA) and apoptosis (TUNEL) were more elevated in fish from site 1, but spermatocytes were mainly labelled in fish from site 2. Overall, these data demonstrate changes in testicular activity and plasma sex steroids in a neotropical teleost fish living downstream from a hydroelectric dam, supplying new data on fish reproduction in regulated rivers. Moreover, morphometric analyses associated with sex steroids profiles provide reliable tools to assess fish spermatogenesis under environmental stress conditions. PMID:22688450

  10. Wildlife Impact Assessment and Summary of Previous Mitigation Related to Hydroelectric Projects in Montana, Phase 1, Volume Two (B), Clark Fork River Projects, Cabinet Gorge and Noxon Rapids Dams, Operator, Washington Water Power Company.

    Energy Technology Data Exchange (ETDEWEB)

    Wood, Marilyn

    1984-06-01

    This report documents best available information concerning the wildlife species impacted and the degree of the impact. A target species list was developed to focus the impact assessment and to direct mitigation efforts. Many non-target species also incurred impacts but are not discussed in this report. All wildlife habitats inundated by the two reservoirs are represented by the target species. It was assumed the numerous non-target species also affected will be benefited by the mitigation measures adopted for the target species. Impacts addressed are limited to those directly attributable to the loss of habitat and displacement of wildlife populations due to the construction and operation of the two hydroelectric projects. Secondary impacts, such as the relocation of railroads and highways, and the increase of the human population, were not considered. In some cases, both positive and negative impacts were assessed; and the overall net effect was reported. The loss/gain estimates reported represent impacts considered to have occurred during one point in time except where otherwise noted. When possible, quantitative estimates were developed based on historical information from the area or on data from similar areas. Qualitative loss estimates of low, moderate, or high with supporting rationale were assessed for each species or species group.

  11. Drosophila Uri, a PP1α binding protein, is essential for viability, maintenance of DNA integrity and normal transcriptional activity

    Directory of Open Access Journals (Sweden)

    Kirchner Jasmin

    2008-04-01

    Full Text Available Abstract Background Protein phosphatase 1 (PP1 is involved in diverse cellular processes, and is targeted to substrates via interaction with many different protein binding partners. PP1 catalytic subunits (PP1c fall into PP1α and PP1β subfamilies based on sequence analysis, however very few PP1c binding proteins have been demonstrated to discriminate between PP1α and PP1β. Results URI (unconventional prefoldin RPB5 interactor is a conserved molecular chaperone implicated in a variety of cellular processes, including the transcriptional response to nutrient signalling and maintenance of DNA integrity. We show that Drosophila Uri binds PP1α with much higher affinity than PP1β, and that this ability to discriminate between PP1c forms is conserved to humans. Most Uri is cytoplasmic, however we found some protein associated with active RNAPII on chromatin. We generated a uri loss of function allele, and show that uri is essential for viability in Drosophila. uri mutants have transcriptional defects, reduced cell viability and differentiation in the germline, and accumulate DNA damage in their nuclei. Conclusion Uri is the first PP1α specific binding protein to be described in Drosophila. Uri protein plays a role in transcriptional regulation. Activity of uri is required to maintain DNA integrity and cell survival in normal development.

  12. Social and environmental impacts of the James Bay hydroelectric project

    International Nuclear Information System (INIS)

    The book, which is an analysis and not an advocacy, examines the anatomy of the controversy that has swirled around the James Bay project - the La Grande and Great Whale projects combined - from the 1970s to the 1990s, and seeks, in the process, to determine whether there are lessons that can be learned from such an analysis that are applicable to other cases as well as to James Bay itself. The contributors are interested, at one and the same time, in finding ways to integrate the knowledge of natural scientists and social scientists to deepen the understanding of human/environment relations and to link science and policy to encourage a productive dialogue between practitioners and scholars in this increasingly important area of inquiry. The contributor's papers include the following: introduction to the issues; hydroelectric power development at James Bay: establishing a frame of reference; James Bay: environmental considerations for building large hydroelectric dams and reservoirs in Quebec; elevated mercury in fish as a result of the James Bay hydroelectric power development: perception and reality; the Cree people of James Bay: assessing the social impacts of hydroelectric dams and reservoirs; culture, social change, and Cree opposition to the James Bay hydroelectric development; and the impact of James Bay hydroelectric development on the art and craft of the James Bay Cree. The authors of the volume have attempted to stand back and examine just a few of these issues from the perspective of a variety of disciplines, and their purpose is to inform and stimulate thoughtful consideration by providing an overall perspective that might might serve to broaden the context in which specific issues can be debated. refs., 3 tabs., 5 figs

  13. Hydroelectric power stations and ecological energy policy

    International Nuclear Information System (INIS)

    The report discusses the place of hydroenergy in solving the power and ecological problems of Bulgaria: level of building up of the hydroelectric capacity of the country; possibilities for new hydro electric construction; environmental problems of design, construction and operation of the hydroelectric units; advantages of the hydroelectric engineering. The possibilities of the hydroelectric power plants as an alternative of the other more or less conventional electicity producers are shown in order to help in decision making as regards the problems of the economic, power and environmental crisis. (author)

  14. The challenges facing hydroelectric power in Europe

    International Nuclear Information System (INIS)

    The single major challenge for hydroelectric power stations today is the durability of production. Environmental management has to be rethought, climate change integrated, but also the economic role of hydroelectricity reassessed. More generally, the challenge of energy transition in which hydroelectricity will have primary role must be met. The renewal of hydroelectric concessions, underway in some European countries, must be placed in this context. By using as examples Switzerland and France, the author sets out to show that this rethink can be an opportunity to put into practice new ways of management for this sector. (author)

  15. Wildlife Impact Assessment and Summary of Previous Mitigation Related to Hydroelectric Projects in Montana, Volume One, Libby Dam Project, Operator, U.S. Army Corps of Engineers.

    Energy Technology Data Exchange (ETDEWEB)

    Yde, Chris A.

    1984-10-01

    This assessment addresses the impacts to the wildlife populations and wildlife habitats due to the Libby Dam project on the Kootenai River and previous mitigation of these losses. The current assessment documents the best available information concerning the impacts to the wildlife populations inhabiting the project area prior to construction of the dam and creation of the reservoir. Many of the impacts reported in this assessment differ from those contained in the earlier document compiled by the Fish and Wildlife Service; however, this document is a thorough compilation of the available data (habitat and wildlife) and, though conservative, attempts to realistically assess the impacts related to the Libby Dam project. Where appropriate the impacts resulting from highway construction and railroad relocation were included in the assessment. This was consistent with the previous assessments.

  16. Methodologies for Assessing the Cumulative Environmental Effects of Hydroelectric Development of Fish and Wildlife in the Columbia River Basin, Volume 1, Recommendations, 1987 Final Report.

    Energy Technology Data Exchange (ETDEWEB)

    Stull, Elizabeth Ann

    1987-07-01

    This volume is the first of a two-part set addressing methods for assessing the cumulative effects of hydropower development on fish and wildlife in the Columbia River Basin. Species and habitats potentially affected by cumulative impacts are identified for the basin, and the most significant effects of hydropower development are presented. Then, current methods for measuring and assessing single-project effects are reviewed, followed by a review of methodologies with potential for use in assessing the cumulative effects associated with multiple projects. Finally, two new approaches for cumulative effects assessment are discussed in detail. Overall, this report identifies and reviews the concepts, factors, and methods necessary for understanding and conducting a cumulative effects assessment in the Columbia River Basin. Volume 2 will present a detailed procedural handbook for performing a cumulative assessment using the integrated tabular methodology introduced in this volume. 308 refs., 18 figs., 10 tabs.

  17. Climate change and hydroelectric production

    International Nuclear Information System (INIS)

    Manitoba Hydro is planning for the possibility of climate change, which has the potential to adversely effect its hydroelectric generating potential. Theoretical and physical evidence for a global warming are reviewed, and it is shown that some of Manitoba Hydro's own measurements support a warming hypothesis. The most significant effect on the hydraulic generating system would be associated with diminished river flows. Winter hydraulic generation capability would be reduced if the magnitude of the change were sufficient to cause several freeze-ups and break-ups within a given season. Incidence of transmission line icing would probably increase, permafrost recession may undermine tower foundations, and conductor resistance may increase to increase energy loss. Ice crossings and winter roads would be adversely affected, and a restriction on fossil fuel consumption could limit thermal generation and increase demand for hydroelectric or nuclear energy. Manitoba Hydro is examining a number of no-cost or low-cost options to accomodate potential climate change, using probable maximum precipitation hydrologic technology, research into conductor galloping, line icing detection, and hydrological investigations

  18. Private affairs [Canon del Pato hydroelectric project

    International Nuclear Information System (INIS)

    The privatisation of the electric power industry in Peru has caused growth in its hydroelectric generation capacity. Increased interest in hydroelectric power, based on economic considerations, had led to decision on upgrading the two main hydropower plants which will provide almost 100 MW of extra capacity over a three year period, and provide competitively priced electric power. (UK)

  19. Regional policy and hydroelectric resources

    Directory of Open Access Journals (Sweden)

    Franco Romerio

    2009-06-01

    Full Text Available This article brings to light the different models applied in the management of hydroelectric resources in the Swiss canton Ticino during the 20th century. Future prospects are broached in view of the opening of the electricity markets to competition. We equally analyse political projects, notably regarding matters of water cantonalisation, as well as the technico-economic factors which influence them. Conflicts, that have been particularly acute, are evoked, and socio-economic, energy and environmental issues detailed. The national and international context is pointed out. The study allows the identification of critical factors that must be considered in the definition of regional policies in relation to hydroelectric matters.Cet article met en lumière les différents modèles de gestion des ressources hydroélectriques adoptés dans le canton du Tessin au XXe siècle. Les perspectives d’avenir sont esquissées en vue des processus d’ouverture des marchés à la concurrence. On analyse aussi bien les projets politiques, notamment en matière de cantonalisation des eaux, que les problèmes technico-économiques qui les ont influencés. Les conflits, qui ont été particulièrement aigus, sont évoqués, et les enjeux socio-économiques, énergétiques et environnementaux précisés. Le contexte national et international est rappelé tout au long de l’analyse. Cette étude permet d’identifier les facteurs critiques qu’il faut prendre en considération dans la définition des politiques régionales en matière hydroélectrique.

  20. Evaluation of our hydroelectric resources

    International Nuclear Information System (INIS)

    Because of the geo energetic position of our country, its geo strategic importance becomes even greater due to the fact that one of the basic problems of our century is to meet the energy demand. In this study one of the most significant energy resources of our country, hydroelectric energy production resource has been made of subject and a general evaluation has been performed considering our country's conditions. In meeting countries general energy demands diversity of production sources and resources where they are supplied from shows great importance. Our country is quite rich from the aspect of hydroelectric potential which is the most significant among the renewable energy resources. That is why our hydroelectric potential (HEP) has been investigated by considering Feasibility, Operation Specifications, Economy, External Dependence issues in electrical energy planning.. In our country, it is frequently being emphasized that 35% of our HEP has been evaluated though which HEP is of subject, is not explained. While HEP is defined at 4 levels namely as Gross (GHEP), Technical (THEP), Economic (EHEP) and Evaluated HEPs. Our country is placed in 2nd place in Europe from the aspect of GHEP whereas it is placed as one of the last from the aspect of evaluated HEP. Capacity usage for hydroelectric plants has been foreseen as 40.5% (3548 hours/year) by the 2005-2020 planning prepared by ETKB (Ministry of Energy and Natural Resources). On the other hand, capacity usage has been found as 40.3% for the analysis for realized cases using DSI (State Water Works) 2006 data, which is only 0.5% below the foreseen value.What mainly lowers the realized average is the hard pressure applied to hydraulic plants during the period 1995-1999. The situation which arises as a result of this operation policy is wrongly interpreted by DPT (State Planning Organization) and consequently hydroelectric plants are defined as unreliable. However, since sufficient storage plants which will

  1. Feasibility Assessment of Water Energy Resources of the United States for New Low Power and Small Hydro Classes of Hydroelectric Plants

    Energy Technology Data Exchange (ETDEWEB)

    Douglas G. Hall

    2006-01-01

    Water energy resource sites identified in the resource assessment study reported in Water Energy Resources of the United States with Emphasis on Low Head/Low Power Resources, DOE/ID-11111, April 2004 were evaluated to identify which could feasibly be developed using a set of feasibility criteria. The gross power potential of the sites estimated in the previous study was refined to determine the realistic hydropower potential of the sites using a set of development criteria assuming they are developed as low power (less than 1 MW) or small hydro (between 1 and 30 MW) projects. The methodologies for performing the feasibility assessment and estimating hydropower potential are described. The results for the country in terms of the number of feasible sites, their total gross power potential, and their total hydropower potential are presented. The spatial distribution of the feasible potential projects is presented on maps of the conterminous U.S. and Alaska and Hawaii. Results summaries for each of the 50 states are presented in an appendix. The results of the study are also viewable using a Virtual Hydropower Prospector geographic information system application accessible on the Internet at: http://hydropower.inl.gov/prospector.

  2. Feasibility assessment of the water energy resources of the United States for new low power and small hydro classes of hydroelectric plants: Main report and Appendix A

    Energy Technology Data Exchange (ETDEWEB)

    Hall, Douglas G. [Idaho National Lab. (INL), Idaho Falls, ID (United States); Reeves, Kelly S. [Idaho National Lab. (INL), Idaho Falls, ID (United States); Brizzee, Julie [Idaho National Lab. (INL), Idaho Falls, ID (United States); Lee, Randy D. [Idaho National Lab. (INL), Idaho Falls, ID (United States); Carroll, Gregory R. [Idaho National Lab. (INL), Idaho Falls, ID (United States); Sommers, Garold L. [Idaho National Lab. (INL), Idaho Falls, ID (United States)

    2006-01-01

    Water energy resource sites identified in the resource assessment study reported in Water Energy Resources of the United States with Emphasis on Low Head/Low Power Resources, DOE/ID-11111, April 2004 were evaluated to identify which could feasibly be developed using a set of feasibility criteria. The gross power potential of the sites estimated in the previous study was refined to determine the realistic hydropower potential of the sites using a set of development criteria assuming they are developed as low power (less than 1 MWa) or small hydro (between 1 and 30 MWa) projects. The methodologies for performing the feasibility assessment and estimating hydropower potential are described. The results for the country in terms of the number of feasible sites, their total gross power potential, and their total hydropower potential are presented. The spatial distribution of the feasible potential projects is presented on maps of the conterminous U.S. and Alaska and Hawaii. Results summaries for each of the 50 states are presented in an appendix. The results of the study are also viewable using a Virtual Hydropower Prospector geographic information system application accessible on the Internet at: http://hydropower.inl.gov/prospector.

  3. The hydroelectric power market in the world

    International Nuclear Information System (INIS)

    This work makes a synthesis of the hydroelectric power market, of its present day capacity in the world, and of its perspectives of development in the future. The first part treats of the hydroelectric facilities and of the market of hydroelectric power plants. It presents the technology used and the different types of plants, the evolution of their geographical setting and the future potentialities of development. The second part deals with the competitiveness of this industry with respect to: the energy policy stakes, the profitability, the energy independence of countries, the regulation of power networks and the environmental impacts. (J.S.)

  4. Simplified matrix for assessment to environmental impacts on small hydroelectric power plants (SHP); Matriz simplificada para avaliar impactos ambientais em pequenas centrais hidreletricas (PCH)

    Energy Technology Data Exchange (ETDEWEB)

    Barbosa, Tania A.P. de Souza; Dupas, Francisco Antonio [Universidade Federal de Itajuba, MG (Brazil). Inst. de Recursos Naturais]. E-mails: taniabarbosa@unifei.edu.br; dupas@unifei.edu.br

    2006-07-01

    This work intends to study the methodologies used by EIA and proposes the adaptation of a simplified matrix for the assessment of environmental impacts regarding small hydropower plants. A case study of Ninho da Aguia SHP, located in the city of Delfim Moreira, MG, was used for elaborating the matrix. The methodology used the analysis of all the negative impacts and they were given combined weight based on a pre-established impact scale. The weights that were given to each impact were distributed according to the combination of features presented in the referred EIA. The results attained show that the environmental damage is reduced by 45% when the mitigating measures suggested by the EIA and by the analysis carried out by this study are applied. Besides, this preliminary proposal will make it possible for the process of getting an environmental license to be accelerated. Today, this process is considered as an investment inhibitor because of its slowness caused by the environmental organs that analyze these studies. Also, it may be used as initial guidelines regarding the environmental cost of the implementation of the enterprise. The proposed matrix shows itself as efficient because it is easy to be used and it is a useful tool for the analysis of projects that will be implemented.

  5. Optimal control of hydroelectric facilities

    Science.gov (United States)

    Zhao, Guangzhi

    This thesis considers a simple yet realistic model of pump-assisted hydroelectric facilities operating in a market with time-varying but deterministic power prices. Both deterministic and stochastic water inflows are considered. The fluid mechanical and engineering details of the facility are described by a model containing several parameters. We present a dynamic programming algorithm for optimizing either the total energy produced or the total cash generated by these plants. The algorithm allows us to give the optimal control strategy as a function of time and to see how this strategy, and the associated plant value, varies with water inflow and electricity price. We investigate various cases. For a single pumped storage facility experiencing deterministic power prices and water inflows, we investigate the varying behaviour for an oversimplified constant turbine- and pump-efficiency model with simple reservoir geometries. We then generalize this simple model to include more realistic turbine efficiencies, situations with more complicated reservoir geometry, and the introduction of dissipative switching costs between various control states. We find many results which reinforce our physical intuition about this complicated system as well as results which initially challenge, though later deepen, this intuition. One major lesson of this work is that the optimal control strategy does not differ much between two differing objectives of maximizing energy production and maximizing its cash value. We then turn our attention to the case of stochastic water inflows. We present a stochastic dynamic programming algorithm which can find an on-average optimal control in the face of this randomness. As the operator of a facility must be more cautious when inflows are random, the randomness destroys facility value. Following this insight we quantify exactly how much a perfect hydrological inflow forecast would be worth to a dam operator. In our final chapter we discuss the

  6. The environment and the hydroelectric in Amazonia

    International Nuclear Information System (INIS)

    Some aspects about social and environmental impacts due to the hydroelectric power plants constructed in Amazonia region are presented, including considerations of energy planning and management with international example. (C.G.C.)

  7. Improvements for conventional clean energies: hydroelectric power

    International Nuclear Information System (INIS)

    Hydro-electric energy offers considerable possibilities and advantages which should be exploited before considering the construction of power which use fossil fuels. In fact: - hydro-electric is the only renewable energy available in very large quantities at competitive prices, - there are still many possibilities for producing it since at present only 14% is exploited, - hydraulic machines have been considerably improved over recent years, - the improvements make it possible to use watercourses in successive stages thus considerably reducing damage to the environment, - hydro-electric installations have a regulating effect, - vast areas of uncultivated land can be irrigated using the water reserves created by the artificial lakes. All these reasons favour intensive exploitation of hydro-electric energy reserves, in spite of the initial investment costs, which are sometimes higher than those for constructing fuel/driven power stations. (author) 9 figs., 1 tab., 3 refs

  8. The Power of Hydroelectric Dams: Agglomeration Spillovers

    OpenAIRE

    Severnini, Edson R.

    2014-01-01

    How much of the geographic clustering of economic activity is attributable to agglomeration spillovers as opposed to natural advantages? I present evidence on this question using data on the long-run effects of large scale hydroelectric dams built in the U.S. over the 20th century, obtained through a unique comparison between counties with or without dams but with similar hydropower potential. Until mid-century, the availability of cheap local power from hydroelectric dams conveyed an importa...

  9. 77 FR 24949 - Red River Lock & Dam No. 4 Hydroelectric Project; BOST4 Hydroelectric LLC; Notice of Proposed...

    Science.gov (United States)

    2012-04-26

    ... Energy Regulatory Commission Red River Lock & Dam No. 4 Hydroelectric Project; BOST4 Hydroelectric LLC... affected by issuance of a license for the proposed Red River Lock & Dam No. 4 Hydroelectric Project No... Hydroelectric LLC, as applicant for the proposed Red River Lock & Dam No. 4 Project No. 12757, is invited...

  10. Consideraciones educativas de la perspectiva ecológica de Urie Bronferbrenner

    OpenAIRE

    Gifre Monreal, Mariona; Esteban Guitart, Moisès

    2012-01-01

    El objetivo de este artículo es presentar las bases teóricas y algunas aplicaciones contemporáneas de la teoría de Urie Bronfenbrenner. En primer lugar, se describe su biografía. Posteriormente, se explica su teoría ecología, su modelo “Proceso-Persona-Contexto-Tiempo” (PPCT) y su reciente aproximación bioecológica. A continuación, exponemos algunas consideraciones educativas de su teoría. Más específicamente, destacamos seis temas basados en algunas ideas de Bronfenbrenner: 1) la relación en...

  11. Battle looms over hydroelectric dam relicensing

    International Nuclear Information System (INIS)

    Environmental groups, buoyed by support from influential lawmakers, are vowing to change the Federal Energy Regulatory Commission's (FERC's) hydroelectric relicensing procedures. For too long, the groups say, the hydroelectric industry has benefitted from a cozy relationship with the FERC, which has emphasized economic over environmental considerations. The success or failure of the environmentalists agenda will likely prove critical to the hydroelectric industry. With 237 hydroelectric licenses up for renewal this year - the most ever considered by the FERC in one year - and four vacant seats at the Commission, FERC hydro policy appears poised for upheaval. The groups have proposed a multipoint program to address perceived shortcomings in the FERC's hydroelectric relicensing procedures. The program includes recommendations to: Shorten dam licenses (which currently stretch 30 to 50 years) and require the FERC to periodically reevaluate the terms of hydropower licenses; Increase Congressional oversight of the FERC to assure adherence to environmental laws, including the National Environmental Policy Act, which mandates the preparation of environmental impact statements where appropriate; Mandate facilities for upstream and downstream fish passage; Establish a mitigation fund, collectable from dam owners, for river conservation and restoration programs; Promote all alternatives to relicensing projects, including denial of project licenses; and Reassign the FERC's hydropower jurisdiction to another federal agency, such as the Environmental Protection Agency or the Department of the Interior

  12. Hydroelectricity production and forest conservation in watersheds.

    Science.gov (United States)

    Guo, Zhongwei; Li, Yiming; Xiao, Xiangming; Zhang, Lin; Gan, Yaling

    2007-09-01

    Globally, particularly in developing countries, hydroelectricity production and economic growth occur together with ecosystem/biodiversity conservation in watersheds. There is a relationship between hydroelectricity production and ecosystem/biodiversity conservation in watersheds, centering on the supply and demand for ecosystem services of river water flow regulation and sediment retention. Here we show that, in the upper reach of the Yangtze River, hydroelectricity production of Three Gorges Hydroelectric Power Plant can form a beneficial relationship with forest conservation through the paid use (compensating residents for their cooperation in the conservation) of ecosystem services launched by the National Natural Forest Protection Project. This interaction can provide additional incentives to encourage local communities' long-term cooperation in conserving and protecting the restored forest ecosystems. Hydroelectricity plants also obtain benefits from this interaction. The industrialization of ecosystem services supply provides an operational framework for this beneficial interaction. Sustainable forest ecosystem conservation will require developing new institutions and policies and must involve local communities in the conservation and protection of their local forests. PMID:17913122

  13. Hiilangaay Hydroelectric Project – Final Report

    Energy Technology Data Exchange (ETDEWEB)

    Twitchell, Sara [HDR, Omaha, NE (United States); Stimac, Michael [HDR, Omaha, NE (United States); Lang, Lisa [Haida Corporation, Hydaburg, AK (United States); Witwer, Doreen [Haida Corporation, Hydaburg, AK (United States); Jameson, Vincent [Haida Corporation, Hydaburg, AK (United States)

    2016-06-01

    The Hiilangaay Hydroelectric Project (“Hiilangaay” or the “Project”) is a 5-megawatt hydroelectric resource currently under construction on Prince of Wales Island (POW), Alaska, approximately ten miles east of Hydaburg. The objective of the Project is to interconnect with the existing transmission grid on Prince of Wales Island, increasing the hydroelectric generation capability by 5 MW, eliminating the need for diesel generation, increasing the reliability of the electrical system, and allowing the interconnected portion of the island to have 100 percent renewable energy generation. Pre-construction activities including construction planning, permit coordination and compliance, and final design have made it possible to move forward with construction of the Hiilangaay Project. Despite repeated delays to the schedule, persistence and long-term planning will culminate in the construction of the Project, and make Prince of Wales Island independent of diesel-fueled energy

  14. The little hydro-electricity: the boosting?

    International Nuclear Information System (INIS)

    The hydraulic energy could be easily developed in France to reach the objectives of the european directive on the renewable energies. This development can be assured by the construction of power plants perfectly integrated in their environment and respecting the rivers and assured also by the increase of the capacities of existing power plants as it is allowing by the new regulations. This document presents the place and the capacity of the hydro-electricity in France, the implementing of a green electricity, the existing regulation, the river biological continuation, the ecosystems and the little hydro-electricity and the example of the hydro-electric power plant of Scey-sur-Saone. (A.L.B.)

  15. Understanding the costs and schedule of hydroelectric projects

    International Nuclear Information System (INIS)

    This paper is based on a study conducted for the World Bank which evaluated the feasibility of developing an empirically based ex ante project analysis system for hydroelectric projects. The system would be used to assess: the reasonableness of engineering-based cost and schedule estimates used for project appraisal and preliminary estimates used to select projects for appraisal; and the potential for cost growth and schedule slip. The system would help identify projects early in the project appraisal process that harbor significantly higher than normal risks of overrunning cost and schedule estimates

  16. Hydroelectric rent and precipitation variability: the case of Norway

    International Nuclear Information System (INIS)

    Norway is about to reorganize its electricity production sector from a predominantly administered one to one which is based on market prices and principles of efficiency. The objective of this paper is to model the energy sector and to measure the size of hydro rent before and after the reorganization. We construct a regionally diversified and integrated equilibrium model of production, transmission and distribution of hydroelectricity. Particular attention is paid to the role of precipitation variability for the size and regional variation of hydro rent. We consider alternative routes for assessing the size of hydro rent in a long-run perspective. (author)

  17. Methane and CO2 emissions from China's hydroelectric reservoirs: a new quantitative synthesis.

    Science.gov (United States)

    Li, Siyue; Zhang, Quanfa; Bush, Richard T; Sullivan, Leigh A

    2015-04-01

    Controversy surrounds the green credentials of hydroelectricity because of the potentially large emission of greenhouse gases (GHG) from associated reservoirs. However, limited and patchy data particularly for China is constraining the current global assessment of GHG releases from hydroelectric reservoirs. This study provides the first evaluation of the CO2 and CH4 emissions from China's hydroelectric reservoirs by considering the reservoir water surface and drawdown areas, and downstream sources (including spillways and turbines, as well as river downstream). The total emission of 29.6 Tg CO2/year and 0.47 Tg CH4/year from hydroelectric reservoirs in China, expressed as CO2 equivalents (eq), corresponds to 45.6 Tg CO2eq/year, which is 2-fold higher than the current GHG emission (ca. 23 Tg CO2eq/year) from global temperate hydropower reservoirs. China's average emission of 70 g CO2eq/kWh from hydropower amounts to 7% of the emissions from coal-fired plant alternatives. China's hydroelectric reservoirs thus currently mitigate GHG emission when compared to the main alternative source of electricity with potentially far great reductions in GHG emissions and benefits possible through relatively minor changes to reservoir management and design. On average, the sum of drawdown and downstream emission including river reaches below dams and turbines, which is overlooked by most studies, represents the equivalent of 42% of the CO2 and 92% of CH4 that emit from hydroelectric reservoirs in China. Main drivers on GHG emission rates are summarized and highlight that water depth and stratification control CH4 flux, and CO2 flux shows significant negative relationships with pH, DO, and Chl-a. Based on our finding, a substantial revision of the global carbon emissions from hydroelectric reservoirs is warranted. PMID:25618308

  18. What share for hydroelectricity in France?

    International Nuclear Information System (INIS)

    This document gathers 10 presentations (articles) given at the 2. meeting on hydroelectricity, held at Grenoble on May 2004. The papers present some examples of realizations in the domain of small-hydropower, the R and D in progress and some recent advances in hydraulic engineering, the safety and quality aspects, and the environmental impacts and sustainable development of hydroelectric power: 1 - examples of small hydropower plants in France and in progress at SOGREAH (T. Bongrand); 2 - the pico-power plants implemented on drinkable water networks (E. Bouvier); 3 - MINI-AQUA: the mini-hydro solution (M. Francois); 4 - Grenoble and the Alpine valley, pole of hydraulic and hydroelectric competences (J.M. Martin); 5 - history and R and D (B. Tardieu); 6 - advances in engineering for a forefront industry (M. Vogien); 7 - improvement of hydraulic safety (P. Cruchon); 8 - a ISO 14001 certification experience in the domain of hydroelectricity (A. Gariel); 9 - the Rhone river development, reserved flow rate and sustainable development (L. Levasseur); 10 - small hydropower: impact and integration (J.P. Mallet). (J.S.)

  19. Hydroelectric power plant Irape - viability studies

    International Nuclear Information System (INIS)

    The socio-environmental analysis of the feasibility studies from Irape Hydroelectric Power Plant in Minas Gerais State-Brazil was described including three main questions: the regional insertion mentioning the social conflicts, the social communication program and the basic strategic; the reduction of water volume downstream; the development of programs on the Basic Project Stage

  20. Hydroelectric power in Hawaii. A report on the statewide survey of potential hydroelectric sites

    Energy Technology Data Exchange (ETDEWEB)

    Beck, C. A.

    1981-02-01

    An assessment was made of the hydropower potential in Hawaii. The major conclusion of this study is that hydropower resources in the State of Hawaii are substantial, and they offer the potential for major increases in hydropower generating capacity. Hydropower resources on all islands total about 50 MW of potential generating capacity. Combined with the 18 MW of existing hydropower capacity, hydropower resources potentially could generate about 307 million kWh of electric energy annually. This represents about 28% of the present combined electricity needs of the Neighbor Islands, Kauai, Molokai, Maui, and the Big Island. Hydropower resources on Kauai equal 72% of that island's electricity needs; on Molokai, 40%, on the Big Island, 20%; and on Maui, 18%. The island of Oahu, however, has only small hydropower resources, and could only generate a negligible portion of its electricity needs from this energy source. A summary of existing and future (potential) hydropower capacities and estimated annual outputs for each island is presented. How much of the potential capacity is being actively considered for development and how much is only tentatively proposed at the time is indicated. The economics of hydropower at specific sites were analyzed. The major conclusion of this analysis is that hydropower development costs vary widely among the different sites, but that generally the cost of hydroelectric power is either less than or comparable to the cost of oil-fired power.

  1. Relations between hydroelectric constructions and the environment

    International Nuclear Information System (INIS)

    By their dimensions, hydroelectric constructions constitute one of the examples of anthropic action upon nature with favorable as well as unfavorable effects. Such effects can be correctly established both by the specialists in different fields and representatives of local population affected by these constructions. The paper proposes several parameters for a qualitative characterization of such an effect. Some favorable and unfavorable effects of dams. lakes, secondary catchment and derivations are discussed. Two possible solutions are proposed for secondary catchment and hydroelectric power station in the upper areas of the rivers from the point of view of waterflow distribution which would allow a normal insertion of such construction in the environment, even if the electric power production diminishes. (author)

  2. Downstream Effects of a Hydroelectric Reservoir on Aquatic Plant Assemblages

    Directory of Open Access Journals (Sweden)

    Ivan Bernez

    2002-01-01

    Full Text Available Macrophytes were studied downstream of the Rophémel hydroelectric dam on the River Rance (Côtes d’Armor Department, western France to assess the effects of hydroelectric functioning on river macrophyte communities. We studied ten representative sections of the hydro-peaking channel on five occasions in 1995 and 1996, on a 15-km stretch of river. Floristic surveys were carried out on sections 50 m in length, and genera of macroalgae, species of bryophyta, hydrophytes, and emergent rhizophytes were identified. For the aquatic bryophytes and spermatophytes section of our study, we compared our results with 19th century floristic surveys, before the dam was built. During the vegetative growth period, the hydro-peaking frequency was low. The plant richness was highest near the dam. The macrophyte communities were highly modified according to the distance to the dam. The frequency and magnitude of hydro-peaking was related to the aquatic macrophyte richness in an Intermediate Disturbance Hypothesis position. However, the results of the eco-historical comparison with 19th century floristic surveys point to the original nature of the flora found at the site. Some floral patterns, seen during both periods and at an interval of 133 years, were indicative of the ubiquity of the aquatic flora and of the plants’ adaptability. This demonstrates the importance of taking river basin history into account in such biological surveys.

  3. Hydroelectricity - An Answer To Energy Needs

    Energy Technology Data Exchange (ETDEWEB)

    Francois-Xausa, Maryse; Havard, David; Czerwinski, Francois; Teller, Olivier

    2010-09-15

    The energy challenges of the next 30 years appear daunting and, in certain cases, in conflict with one another. Their complexity is such that one solution alone cannot provide a full answer. It is nevertheless equally clear that hydro-electricity, being renewable, proven, highly efficient, storable and with still very significant resource potential, possesses a unique combination of attributes which will aid decision-makers to plan and execute energy development with confidence.

  4. Emissions from hydroelectric reservoirs and comparison of hydroelectricity, natural gas and oil

    International Nuclear Information System (INIS)

    When reservoirs are created, a small fraction of the flooded organic matter decomposes into humic acids, carbon dioxide (CO2), methane (CH4), nitrogen, phosphorus, and other elements. The major greenhouse gases produced are CO2 and CH4. For northern projects, Canadian studies on emissions from hydroelectric reservoirs have reached similar conclusions: Emissions, including methane, are less than 35 kg CO2 equivalent per MWh. Using a typical project in northern Quebec as the basis for analysis, none of the studies dispute the considerable advantages of hydroelectricity regarding greenhouse gas emissions. Taking into account all components of energy systems, emissions of greenhouse gases from natural-gas power plants are 24 to 26 times greater than emissions from hydroelectric plants. The Freshwater Institute, in an article published in Ambio suggests that emissions from hydroelectric plants could be a significant source of greenhouse gases. This conclusion does not apply to most hydroelectric projects for two reasons: First, the Freshwater Institute's studies concerned flooded peatlands and shallow reservoirs that are not typical of most hydro projects; and second, the Institute analyzed a hydro project with a ratio of flooded area to energy production that is 6 to 10 times higher than typical projects in Canada. 7 refs, 4 tabs

  5. Environmental requirements at hydroelectric power plants

    International Nuclear Information System (INIS)

    Hydroelectric power is the most mature and widely implemented of the renewable energy technologies. The energy of flowing water has been used to perform work directly since ancient times, and the use of hydropower turbines to generate electricity traces back to the 19th century. Two commonly used turbine types, the Francis and Kaplan turbines, are essentially refinements of the simple reaction turbine of Hero of Alexandria, dating from about 100 B.C. (NAS 1976). Hydroelectric power production provides over 10% of the net electrical generation in the US, more than petroleum or natural gas and far more than the other renewable energy technologies combined. On a regional basis, hydroelectric power represents 14% of the net electrical power generation in the Rocky Mountain states and nearly 63% along the Pacific Coast. Those states that have the largest percentages of their electricity generated by hydropower (e.g., Idaho, Oregon, Montana, and Washington) also tend to have the lowest average cost of electricity per kilowatt-hour

  6. Impasses e controvérsias da hidreletricidade Impasses and controversies of hydroelectricity

    Directory of Open Access Journals (Sweden)

    Célio Bermann

    2007-04-01

    Full Text Available O presente artigo faz uma avaliação da hidreletricidade no Brasil a partir da sua importância na matriz elétrica do país, do caráter prioritário que a geração hidrelétrica assume na gestão dos recursos hídricos, e dos impasses e controvérsias do ponto de vista social e ambiental decorrentes da implantação e operação dos empreendimentos hidrelétricos. Para ilustrar as questões levantadas com relação às grandes usinas, são referenciados dois estudos de caso - a UHE Tijuco Alto, em processo de licenciamento ambiental pelo Ibama; e a UHE Barra Grande, cujo processo de licenciamento foi marcado por uma série de irregularidades. Por fim, são apontadas possíveis alternativas para a geração hidrelétrica, em particular a repotenciação de usinas e um maior incentivo às pequenas centrais hidrelétricas.This article assesses hydroelectricity in Brazil according to its importance as one of the country’s main energy sources and also to its social and environmental impasses and controversies derived from the implantation and operation of hydroelectric undertakings. In order to illustrate the questions related to large power plants that are brought up along the article, two case reports are presented: Tijuco Alto Hydroelectric Power Plant, which is going through Ibama’s (Brazilian Institute for the Environment and Renewable Natural Resources environmental license process; and Barra Grande Hydroelectric Power Plant, whose environmental license process has been affected by several irregularities. Finally, possible alternatives for hydroelectric production are pointed out, particularly power plant re-potentiation and a greater incentive to undersized hydroelectric plants.

  7. The evolving policy regime for pumped storage hydroelectricity in China: A key support for low-carbon energy

    International Nuclear Information System (INIS)

    Highlights: • Highlights the role of pumped storage hydroelectricity in renewable energy integration. • Examines the development of pumped storage hydroelectricity in China. • Reviews the regulatory policies on pumped storage hydroelectricity in China. • Analyzes the operation and pricing regime for pumped storage hydroelectricity in China. • Makes policy recommendations for promoting pumped storage hydroelectricity in China. - Abstract: As part of its energy transition strategy, China has set ambitious targets for increasing the contribution of renewable energy and, in particular, of wind power. However, the Chinese power sector has not undergone the necessary reforms to facilitate the integration and absorption of a larger share of variable renewable energy. This is evident from the difficulties in absorbing wind power from already commissioned wind farms and the resultant curtailment of wind power. Pumped storage hydroelectricity (PSH) is a flexible power source that can facilitate higher penetration levels of wind power as well as complement China’s growing nuclear power capacity. However, regulatory policy constraints have restricted the effective utilization of existing PSH capacity and discouraged investment in new PSH capacity. This paper examines these constraints and assesses the likely impact of new policies designed to address them. Finally, policy recommendations and concluding remarks are provided. This paper contributes to the literature on renewable energy integration from a new perspective. The lessons from China are relevant to other countries going through the energy transition

  8. Evaluation of the Life Cycle Greenhouse Gas Emissions from Hydroelectricity Generation Systems

    Directory of Open Access Journals (Sweden)

    Akhil Kadiyala

    2016-06-01

    Full Text Available This study evaluated the life cycle greenhouse gas (GHG emissions from different hydroelectricity generation systems by first performing a comprehensive review of the hydroelectricity generation system life cycle assessment (LCA studies and then subsequent computation of statistical metrics to quantify the life cycle GHG emissions (expressed in grams of carbon dioxide equivalent per kilowatt hour, gCO2e/kWh. A categorization index (with unique category codes, formatted as “facility type-electric power generation capacity” was developed and used in this study to evaluate the life cycle GHG emissions from the reviewed hydroelectricity generation systems. The unique category codes were labeled by integrating the names of the two hydro power sub-classifications, i.e., the facility type (impoundment (I, diversion (D, pumped storage (PS, miscellaneous hydropower works (MHPW and the electric power generation capacity (micro (µ, small (S, large (L. The characterized hydroelectricity generation systems were statistically evaluated to determine the reduction in corresponding life cycle GHG emissions. A total of eight unique categorization codes (I-S, I-L, D-µ, D-S, D-L, PS-L, MHPW-µ, MHPW-S were designated to the 19 hydroelectricity generation LCA studies (representing 178 hydropower cases using the proposed categorization index. The mean life cycle GHG emissions resulting from the use of I-S (N = 24, I-L (N = 8, D-µ (N = 3, D-S (N = 133, D-L (N = 3, PS-L (N = 3, MHPW-µ (N = 3, and MHPW-S (N = 1 hydroelectricity generation systems are 21.05 gCO2e/kWh, 40.63 gCO2e/kWh, 47.82 gCO2e/kWh, 27.18 gCO2e/kWh, 3.45 gCO2e/kWh, 256.63 gCO2e/kWh, 19.73 gCO2e/kWh, and 2.78 gCO2e/kWh, respectively. D-L hydroelectricity generation systems produced the minimum life cycle GHGs (considering the hydroelectricity generation system categories with a representation of at least two cases.

  9. Sub-Saharan hydroelectric power development potential

    International Nuclear Information System (INIS)

    Though evidencing a power demand which is amongst the lowest in the world, the sub-Saharan regions of Africa are blessed with an enormous hydroelectric power resource potential, which, if suitably developed and tapped, may become a source of economic electric energy for Europe. With the aid of numerous statistical supply and demand data, this paper surveys the marketing potential of this energy source in Africa. The analysis of future development prospects is carried out with reference to the local socio-economic framework

  10. Small-Scale Hydroelectric Power Demonstration Project

    Energy Technology Data Exchange (ETDEWEB)

    Gleeson, L.

    1991-12-01

    The US Department of Energy Field Office, Idaho, Small-Scale Hydroelectric Power Program was initiated in conjunction with the restoration of three power generating plants in Idaho Falls, Idaho, following damage caused by the Teton Dam failure on June 5, 1976. There were many parties interested in this project, including the state and environmental groups, with different concerns. This report was prepared by the developer and describes the design alternatives the applicant provided in an attempt to secure the Federal Energy Regulatory Commission license. Also included are correspondence between the related parties concerning the project, major design alternatives/project plan diagrams, the license, and energy and project economics.

  11. An insurer's experience with small hydroelectric powerplants

    International Nuclear Information System (INIS)

    The property/casualty insurance industry has incurred many losses involving small hydroelectric powerplants. A recent in-house study of these losses by the Hartford Steam Boiler Inspection and Insurance Company in the last decade shows an upward trend in both frequency and severity. An in-depth analysis of these losses revealed a number of root causes that resulted in this loss experience. This paper addresses some of the problems and suggest solutions to improve the reliability and availability of this type of powerplant. Data and case studies are presented to support this analysis

  12. Carbon emission from global hydroelectric reservoirs revisited.

    Science.gov (United States)

    Li, Siyue; Zhang, Quanfa

    2014-12-01

    Substantial greenhouse gas (GHG) emissions from hydropower reservoirs have been of great concerns recently, yet the significant carbon emitters of drawdown area and reservoir downstream (including spillways and turbines as well as river reaches below dams) have not been included in global carbon budget. Here, we revisit GHG emission from hydropower reservoirs by considering reservoir surface area, drawdown zone and reservoir downstream. Our estimates demonstrate around 301.3 Tg carbon dioxide (CO2)/year and 18.7 Tg methane (CH4)/year from global hydroelectric reservoirs, which are much higher than recent observations. The sum of drawdown and downstream emission, which is generally overlooked, represents 42 % CO2 and 67 % CH4 of the total emissions from hydropower reservoirs. Accordingly, the global average emissions from hydropower are estimated to be 92 g CO2/kWh and 5.7 g CH4/kWh. Nonetheless, global hydroelectricity could currently reduce approximate 2,351 Tg CO2eq/year with respect to fuel fossil plant alternative. The new findings show a substantial revision of carbon emission from the global hydropower reservoirs. PMID:24943886

  13. Comparative analysis from hydroelectric generation versus natural gas

    International Nuclear Information System (INIS)

    The aim of the work was to present a comparative analysis between hydroelectric generation and natural gas based on integrated resource planning and sustainable development. The introduced comparative analysis considers the financial aspects; the appropriated technology; and the social, environmental and political factors. The hydroelectric option it showed more advantageous than the thermoelectric. This result was independent of the enterprise scale

  14. 3-Methylthiopropionic Acid Ethyl Ester, Isolated from Katsura-uri (Japanese pickling melon, Cucumis melo var. conomon), Enhanced Differentiation in Human Colon Cancer Cells

    OpenAIRE

    Nakamura, Yasushi; Nakayama, Yuko; Ando, Hitomi; Tanaka, Atsuo; Matsuo, Tomoaki; Okamoto, Shigehisa; Upham, Brad L; Chang, Chia-Cheng; James E Trosko; Park, Eun Young; Sato, Kenji

    2008-01-01

    The fully ripened fruit of Katsura-uri Japanese pickling melon (Cucumis melo var. conomon) has rarely been used for food because the midripened fruit is utilized for making pickles, but the fully ripened fruit is no longer valuable for pickles due to the fruit body being too soft. We have considered the utilization of the fully ripened Katsura-uri fruit that may be used for nonpickling products, particularly if the fully ripened fruit demonstrated health benefits such as anticarcinogenic prop...

  15. URI Program Final Report FY 2001 Grant for the University of Florida Training Reactor

    International Nuclear Information System (INIS)

    The purpose of the URI program is to upgrade and improve university nuclear research and training reactors and to contribute to strengthening the academic community's nuclear engineering infrastructure. It should be noted that the proposed UFTR facility instrumentation and equipment can generally be subdivided into three categories: (1) to improve reactor operations, (2) to improve existing facility/NAA Laboratory operations, and (3) to expand facility capability. All of these items were selected recognizing the objectives of the University Reactor Instrumentation Program to respond to the widespread needs in the academic reactor community for modernization and improvement of research and training reactor facilities, especially at large and diverse institutions such as the University of Florida. These needs have been particularly pressing at the UFTR which is the only such research and training reactor in the State of Florida which is undergoing rapid growth in a variety of technical areas. As indicated in Table 2, the first item is a security system control panel with associated wiring and detectors. The existing system is over 30 years old and has been the subject of repeated maintenance over the past 5 years. Some of its detection devices are no longer replaceable from stock. Modifications made many years ago make troubleshooting some parts of the system such as the backup battery charging subsystem essentially impossible, further increasing maintenance frequency to replace batteries. Currently, various parts of the system cable trays remain open for maintenance access further degrading facility appearance. In light of relicensing plans, this item is also a key consideration for housekeeping appearance considerations. The cost of a replacement ADEMCO Vista 20 security system including turnkey installation by a certified vendor was to be $2,206. Replacement of this system was expected to save up to 5 days of maintenance per year, decrease security alarm response

  16. Feasibility of determination of low-head hydroelectric power development at existing sites: Brighton Dam hydroelectric development. Feasibility report

    Energy Technology Data Exchange (ETDEWEB)

    Will, Alan L.

    1979-04-01

    The redevelopment of the hydroelectric facility at Brighton Dam near Laurel, Maryland has been found to be both technically and financially feasible, the benefit to cost ratio being 1.53:1 compared with an equivalent coal-based generation source. Environmental impacts have been assessed as relatively slight, but some problems, due to poor water quality at the bottom of the reservoir are anticipated and solutions for these would have to be worked out. The benefit to cost ratio could thus be marginally decreased, but the relative costs of one alternative scheme compared to another would not be affected. There is no apparent impediment to proceeding with the work. The selected development would have a single hydroelectric generating unit of 500 kW rated capacity. The gross generation from the project would be 2,840,000 kWh in the year with average rainfall. It is estimated that the total project cost would be $734,000 (at third quarter 1978 price levels), with no allowance for funds during construction (AFDC). Based on 6.25% cost of money, the project would provide power at a levelized cost over the plant lifetime of approximately 23.3 mills per kWh with no AFDC or 24.6 mills/kWh with AFDC. At present, WSSC electrical power demands at Brighton Dam amount to 147,000 kWh per year which is met by Baltimore Gas and Electric Company (BG and E). This represents only 5% of the potential generation at the site and BG and E have agreed in principal to purchase the surplus power.

  17. Influence of a Small Hydroelectric Power Station on the River Ecosystem.

    OpenAIRE

    Enrique Valero; Xana Álvarez; Juan Picos

    2014-01-01

    To assess the effects of the Small Hydroelectric Power Station (SHP) on the fluvial ecosystem, some environmental values are required to measure. This work provides acharacterization of the water quality status in a river stretch around a SHP plant on river Mandeo, (NW Spain), for three years after its construction. The ecological and chemicalstatus of the water and the ecological quality of the riparian habitat was analyzed and comparing with the water quality requirements. The results showe...

  18. Ecosystem services and hydroelectricity in Central America: Modelling service flows with fuzzy logic and expert knowledge

    OpenAIRE

    Locatelli, Bruno; Imbach, Pablo; Vignola, Raffaele; Metzger, Marc; Leguia Hidalgo, Efrain,

    2011-01-01

    Because ecosystem services are generally not produced and used in the same place, their assessment should consider the flows of services from ecosystems to users. These flows depend on the characteristics and spatial distribution of ecosystems and users, the spatial relationships between them, and the presence of filters or barriers between ecosystems and users. The objective of this paper is to map the ecosystem services provided to the Costa Rican and Nicaraguan hydroelectric sectors, which...

  19. Hydraulic potential evaluation for micro - scale hydroelectric generation at Chicamocha River Basin - micro - scale hydroelectric plants

    International Nuclear Information System (INIS)

    In development of technical and scientific cooperation treaty carried out between INEA (today Ingeominas) and Catholic University of Colombia, was elaborated the program: Potential Evaluation Hydraulic for Small hydroelectric plants; whose purpose is to carry electrical energy service to smaller populations and rural zones to all municipalities of country. To begin the program was selected the corresponding area to Chicamocha River Basin, the one which corresponds to 72 Municipalities of Boyaca and Santander Departments, due to the fact that is had good information area originating from diagnostic elaborated by INDERENA with the objective of formulating the Classification Plan and the Basin Managing. This Thesis consists of: 1. To identify all micro-basins; 2. To analyze energy demand on part of kernels of population seated in the study area; 3. To evaluate energy generating capacity of water currents and 4. As of the obtained results, to propose alternative for small hydroelectric plants design (PCH) according to defined needs

  20. The adventure of hydroelectricity must continue

    Energy Technology Data Exchange (ETDEWEB)

    Gravel, C.

    1997-12-31

    An interview with Andre Caille, president and CEO of Hydro-Quebec was presented. The interview focussed on the hydroelectric potential of Hydro-Quebec and open access to the American wholesale market. Hydro-Quebec has the capability to produce 160 to 170 terawatt hours of energy per year which is enough to meet all of Quebec`s needs and to export 12 to 15 per cent. According to M. Caille, research in the field of superconductivity would significantly benefit Hydro-Quebec, since the utility is responsible for 107,000 kilometers of transmission lines. If transmission line losses along those lines could be reduced, power stations could be built even farther from markets. With respect to pricing, Hydro-Quebec continues to sell electricity at regulated prices in Quebec, however, export prices to the U.S. are market driven.

  1. The adventure of hydroelectricity must continue

    International Nuclear Information System (INIS)

    An interview with Andre Caille, president and CEO of Hydro-Quebec was presented. The interview focussed on the hydroelectric potential of Hydro-Quebec and open access to the American wholesale market. Hydro-Quebec has the capability to produce 160 to 170 terawatt hours of energy per year which is enough to meet all of Quebec''s needs and to export 12 to 15 per cent. According to M. Caille, research in the field of superconductivity would significantly benefit Hydro-Quebec, since the utility is responsible for 107,000 kilometers of transmission lines. If transmission line losses along those lines could be reduced, power stations could be built even farther from markets. With respect to pricing, Hydro-Quebec continues to sell electricity at regulated prices in Quebec, however, export prices to the U.S. are market driven

  2. Effects of hydroelectric generation of riverine ecology

    International Nuclear Information System (INIS)

    Construction and operation of hydroelectric generating facilities impact riverine environments through alteration of physical factors (e.g., water temperature, dissolved gas level, flow characteristics). Management of water resources for multiple use without upsetting energy cycles in a balanced ecological community requires that the effects of these modified factors on aquatic organisms be defined. The objective of this project is to identify and quantify the impacts of changes in selected parameters on riverine biota. Emphasis is presently focused on the effects of dissolved gas supersaturation due to the urgency of the problem to Pacific Northwest fisheries. In the past, these studies have been funded under our thermal effects program. We have identified areas for future research which include the effects of river level fluctuation on spawning, entrapment, and predation, and the role of migrating diadromous fishes in the ecological energy cycle

  3. Organic carbon burial efficiency in a subtropical hydroelectric reservoir

    Science.gov (United States)

    Mendonça, Raquel; Kosten, Sarian; Sobek, Sebastian; Jaqueline Cardoso, Simone; Figueiredo-Barros, Marcos Paulo; Henrique Duque Estrada, Carlos; Roland, Fábio

    2016-06-01

    Hydroelectric reservoirs bury significant amounts of organic carbon (OC) in their sediments. Many reservoirs are characterized by high sedimentation rates, low oxygen concentrations in bottom water and a high share of terrestrially derived OC, and all of these factors have been linked to a high efficiency of OC burial. However, investigations of OC burial efficiency (OCBE, i.e., the ratio between buried and deposited OC) in reservoirs are limited to a few studies, none of which include spatially resolved analyses. In this study we determined the spatial variation in OCBE in a large subtropical reservoir and related it to sediment characteristics. Our results show that the sediment accumulation rate explains up to 92 % of the spatial variability in OCBE, outweighing the effect of other variables, such as OC source and oxygen exposure time. OCBE at the pelagic sites varied from 48 to 86 % (mean 67 %) and decreased towards the dam. At the margins, OCBE was lower (9-17 %) due to the low sediment accumulation in shallow areas. Our data show that the variability in OCBE both along the rivers-dam and the margin-pelagic axes must be considered in whole-reservoir assessments. Combining these results with a spatially resolved assessment of sediment accumulation and OC burial in the studied reservoir, we estimated a spatially resolved mean OC burial efficiency of 57 %. Being the first assessment of OCBE with such a high spatial resolution in a reservoir, these results suggest that reservoirs may bury OC more efficiently than natural lakes.

  4. The hydroelectric power - an alternative to the nuclear power

    International Nuclear Information System (INIS)

    The paper presents the place of hydroelectric power in the energy balance of Europe from 1990 through 2050. It is shown that while the European potential of hydroelectric power is at present almost exhausted in the western countries (100 % in Norway, 86 % in France, 85 % in Germany, 80 % in Switzerland) in Romania this factor amounts up to 39 % only. The authors discuss arguments pro and against to hydroelectric power especially from an environmental and socio-economical point of view. A special attention is paid to the microhydroelectric power potential which is locally profitable as it does not imply large capital investments while its environmental impact is nonsignificant. 4 tabs., 4 figs

  5. Small hydroelectric power plants - shelf goods or tailor-made?

    International Nuclear Information System (INIS)

    If small hydroelectric power plants are defined to be hydroelectric power plants of up to a few 1000 kW, they should be shelf goods because of cost considerations. Design of small hydroelectric power plants is a many-sided optimization task, on a level with constructing larger hydro power plants. But the budget for a small hydro power plant does not permit any comprehensive evaluations. The most important costs are the one-time costs in the form of investments and the following annual costs in the form of operation and maintenance, and losses. Financing costs are not considered in this article

  6. Changes in soil organic matter compositrion after introduction of riparian vegetation on shores of hydroelectric reservoires (Southeast of Brazil)

    NARCIS (Netherlands)

    Alcantara, de F.A.; Buurman, P.; Curi, N.; Furtini Neto, A.E.; Lagen, van B.; Meijer, E.M.

    2004-01-01

    This work is part of a research program with the general objective of evaluating soil sustainability in areas surrounding hydroelectric reservoirs, which have been planted with riparian forest. The specific aims were: (i) to assess if and how the soil organic matter (SOM) chemical composition has ch

  7. National hydroelectric power resources study. Preliminary inventory of hydropower resources. Volume 3. Mid-Continent region

    Energy Technology Data Exchange (ETDEWEB)

    None

    1979-07-01

    The US Corps of Engineers' assessment of the nation's hydroelectric resources provides a current and comprehensive estimate of the potential for incremental or new generation at existing dams and other water resource projects, as well as for undeveloped sites in the US. The demand for hydroelectric power is addressed and various related policy and technical considerations are investigated to determine the incentives, constraints, and impacts of developing hydropower to meet a portion of the future energy demands. The comprehensive data represent the effort of the Corps of Engineers based on site-specific analysis and evaluation. Summary tables include estimates of the potential capacity and energy at each site in the inventory. The number of sites and potential capacity in each state are identified, but specific detailed information is included for sites in Colorado, Kansas, Montana, Nebraska, New Mexico, North Dakota, Oklahoma, South Dakota, Texas, and Wyoming.

  8. Guidelines for the environmental impact statement for the proposed Great Whale River Hydroelectric Project. Backgorund information

    International Nuclear Information System (INIS)

    The guidelines presented on the preparation of the environmental impact statement for the Great Whale hydroelectric project by Hydro-Quebec stipulated a project justification, description of the biophysical and social environments, a project description, and that the assessment must address project impacts, mitigative and compensatory measures, environmental surveillance, monitoring, and long-term management programs. Background information presented in this document provides technical notes on the guidelines and the environmental assessment process, a glossary of terms, and biographical notes. The technical notes address guideline structure, project justification, native knowledge, evaluation issues, cumulative impacts, and the assessment and review process

  9. Guidelines for the environmental impact statement for the proposed Great Whale River Hydroelectric Project

    International Nuclear Information System (INIS)

    The guidelines presented on the preparation of the environmental impact statement for the Great Whale hydroelectric project by Hydro-Quebec stipulated a project justification, description of the biophysical and social environments, a project description, and that the assessment must address project impacts, mitigative and compensatory measures, environmental surveillance, monitoring, and long-term management programs. Background information presented in this document provides technical notes on the guidelines and the environmental assessment process, a glossary of terms, and biographical notes. The technical notes address guideline structure, project justification, native knowledge, evaluation issues, cumulative impacts, and the assessment and review process

  10. Canton hydroelectric project: feasibility study. Final report, appendices

    Energy Technology Data Exchange (ETDEWEB)

    1979-05-01

    These appendices contain legal, environmental, regulatory, technical and economic information used in evaluating the feasibility of redeveloping the hydroelectric power generating facilities at the Upper and Lower Dams of the Farmington River at Collinsville, CT. (LCL)

  11. Hydroelectricity: an asset for a successful energy transition in France

    International Nuclear Information System (INIS)

    France's national debate on energy transition has served as a reminder that hydroelectric power plays a significant role in French electricity production. With installed power totalling 25400 MW at end 2012 (the second largest in Europe), France's hydroelectric plants produced 63.8 TWh last year (the third largest in Europe), almost 12% of total output. It is France's second largest means of producing electricity and it represents more than 80% of production of renewable energy. A source of energy developed a long time ago, thus benefiting from technological maturity, hydroelectricity can be produced in large quantity at the heart of France's regions, while also rendering indispensable service for the equilibrium of the French electricity system by compensating the intermittency of other renewable energy sources. The production costs of hydroelectric power are the lowest among all power generation technologies. (authors)

  12. Power market liberalisation: an opportunity for the hydroelectricity?

    International Nuclear Information System (INIS)

    This article discusses the future of hydroelectricity in the light of the ongoing liberalisation of the European power market. Compared to fossil electricity, hydroelectricity is a renewable energy source, has a limited impact on the environment, is able to meet strong variations of power demand, but is a little bit more costly. Hydroelectric companies expect the introduction of a quality label for their product as well as the increasing awareness of consumers for environmental aspects to become strong incentives for them to subscribe on green energy despite its higher cost. The cost difference will also be partly reduced by the introduction of a pollution tax on fossil energy sources. Figures on hydroelectricity capacity production, currently and in the near future, in the countries surrounding the Alps are presented. As an example, the business strategy of a Swiss electricity utility is shortly described

  13. Hydroelectric project impacts on Stikine River ecosystems: An overview

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — The report provides an overview on the hydroelectric project impacts on Stikine river ecosystems. The objective of this study was to develop a report which would...

  14. Hydro-Electric Facilities, Published in 2006, Farmer.

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — This Hydro-Electric Facilities dataset, was produced all or in part from Field Observation information as of 2006. Data by this publisher are often provided in Not...

  15. “Landscape and Heritage of Hydroelectricity in Portugal”

    OpenAIRE

    Matos, Ana Cardoso de

    2012-01-01

    Hydroelectric power plants provided countries with scarcity of coal, such as Portugal, with a vital source of energy for the production of electricity in large quantities. Therefore, since the late 19th century the use of waterfalls as producers of electric power was a topic of study and interest among engineers and the matter was regularly discussed at the Association of Portuguese Civilian Engineers. The great hydroelectric power plants, considered by many as the cathedrals of the second...

  16. BLUE GOLD: HYDRO-ELECTRIC RENT IN CANADA

    OpenAIRE

    Glenn Jenkins; RICHARD ZUKER

    1984-01-01

    In this study, an attempt is made to develop estimates of the value of economic rent from production of hydro-electricity. These estimates are made for the year 1979, which is the latest period for which a comprehensive set of data was available at the time this work was undertaken. The estimates are developed for the hydro-electricity generated (or used) by electric utilities in four provinces: Quebec (including Churchill Falls), Ontario, Manitoba and British Columbia. These electric systems...

  17. Agglomeration effects : studying agglomeration e ffects from Norwegian hydroelectricity plants

    OpenAIRE

    Johansen, Marius; Risa, Erling

    2015-01-01

    This thesis aims to answer the research question \\To what extent did the shocks to eco- nomic activity and population following openings of Norwegian hydroelectricity plants in the early 20th century lead to long run agglomeration eff ects?". The question is answered using data on population density and taxable income in 67 Norwegian municipalities in the period between 1876 and 2013. We utilize the fact that hydroelectricity plants opened before transportation of electricity o...

  18. Economic aspects of hydroelectric power scheme rehabilitation

    International Nuclear Information System (INIS)

    As part of the management of a utility, it is necessary to check, beyond the technical aspect, the economic suitability of deciding whether to perform the maintenance or rehabilitation of an installation. The decision criteria involved are to be found within the framework of the utility's management system itself. After having set out the decision-making process of hydroelectric power station maintenance or rehabilitation, the document goes on to give a description of the economic advantage of such an operation. The latter is determined after having properly defined the overall cost of maintenance or rehabilitation: direct expenses and induced costs, and expected savings: economic performance, short and medium-term reduction of expenses as a result of the profitability and productivity of the rehabilitation. The profitability is calculated as the ratio between the economic balance and the amount of the operation. Productivity means the improvement of the utility's management indicators. The random aspect of savings and a simple method making it possible to integrate them into a calculation is mentioned, as well as the classification and aggregation of various operations of a similar nature that have to come into the budget requirements of the utility. (Author)

  19. Balance: Hydroelectricity impacts on energy systems

    International Nuclear Information System (INIS)

    The VALORAGUA (Value of Water in Portuguese) computer model was developed by Electricidade de Portugal (EDP) in order to determine the optimal operation strategy of a mixed hydro-thermal power system with an important share of hydroelectricity generation such as the one of Portugal. The model has become the main tool used by EDP for planning the development and operation of its power system. In recent years, EDP has acquired the ENPEP package and has become acquainted with its use for integrated energy and electricity planning. The main goal of this effort has been to incorporate in EDP's planning procedure an integrated approach for determining the possible role of electricity in meeting the overall requirements for energy of the country, with due account to the impacts (resource requirements and environmental emissions) of alternative energy and electricity systems. This paper concentrates on a comparison of the results of the BALANCE module of ENPEP for the electricity sector against the simulation results provided by VALORAGUA. Suggested improvements to the methodologies in order to overcome the divergences in results from these two models are also advanced in the paper. (author). 15 figs

  20. Impacts of the operation of existing hydroelectric developments on fishery resources in British Columbia

    International Nuclear Information System (INIS)

    The main features of 46 hydroelectric dams and diversions in British Columbia are reviewed, and available information on the inland sport fish resources within and below the impoundments are summarized. The projects are collectively responsible for ca 95% of the electrical power used in the province. The characteristics detailed include water license and operational constraints, electrical generation, enhancement facilities, operational regime, physical and chemical environment, downstream system, sportfish populations, and recreational fishery. All the hydroelectric impoundments reviewed, with the possible exceptions of some small headponds, support sport fish populations. Recreational angling quality is considered good for about one quarter of impoundments for which information is available. Low population density is the dominant reason for poor angling quality. Drawdowns exceeding 10 m annually and/or low water retention times are significant impediments to sport fish stock densities. Recommended measures to improve sport fishery resources in and below hydroelectric impoundments include evaluation of the efficiency of ongoing compensation programs, improvement to impact assessment procedures to ensure adequate documentation of pre- and post-impoundment conditions, and enhancement of several systems through stock or nutritional supplementation. 161 refs., 95 figs., 9 tabs

  1. An environmental overview of the Cat Arm hydroelectric development

    International Nuclear Information System (INIS)

    The Cat Arm Dam hydroelectric development in Newfoundland comprises 10 dams, three tunnels, two canals and a 127 MW powerhouse. The scheme develops 127 MW from 380.5 m of head and comprises: ten dams of varying heights up to 53 m; a bathtub type overflow spillway 330 m in length; a 230 m long inverted U-shaped diversion tunnel; an 800 m long, inverted U-shaped low pressure forebay tunnel; two bog and rock cut tunnels leading to and from the forebay tunnels; a surface powerhouse containing two Pelton turbines; and a 178 km long, 230 kV transmission line. An overview is provided of the environmental assessment, project impacts, and cost of environmental protection associated with the project. Impacts were centered around fish and aquatic life in the created reservoir and downstream of the powerhouse, loss of ungulate (moose and caribou) habitat due to flooding, loss of forestry resources due to flooding, and the disturbance of land during construction. The overall cost of environmental protection was $7,977,000, only 2% of the total project cost. 17 refs., 1 tab

  2. Hydroelectric resources. Inventory of the hydroelectric resources of the Atlantic Coast

    International Nuclear Information System (INIS)

    Basically this report gives a clear vision of the possibilities of energy development in the Colombian Atlantic Coast, projects that contemplate a wide range as soon as it refers that is to say to generation ranges, they have been identified at level macro in the Sierra Nevada region and the Peasant with a profitable hydroelectric potential of 631 MW; in the Sinu region, 3 projects were identified with a profitable potential of 1186 MW and in the Magdalena region, was also identified 3 projects whose profitable potential is of 475 MW. At level micro, the carried out studies defined in the same previous regions a series of projects that they necessarily reach the megawatt. The report contains a description of each one of the identified projects and its current situation. It also presents a review of the makers of turbines that exist at the moment in the country

  3. Controversies on Energy: Fossil, hydroelectric, nuclear, renewable

    International Nuclear Information System (INIS)

    In Switzerland, energy policy was the subject of several referendums and decision takings in the past few decades. This book explains the numerous aspects to be considered when choosing a strategy which should warrant in the future a sufficient and safe access to energy, with a special emphasis on electric power. There is a tight, but not linear, coupling between the price of energy and the economic development. The pollution of environment induced by the use of fossil energy jeopardizes the survival of our Earth planet. Modeling the effects of the pollution is difficult and inaccurate because of complex feedbacks. In order to conciliate development progress, energy and environment, technology is needed but at the same time involves risks. In order to warrant the life quality in the long run, it is necessary to move to a sustainable development, which implies technological progress and changing the individual behaviours. The safety of the energy supply is warranted by diversifying the energy sources. But accurately define the mid and long term goals and also adapt the instruments which should enable their achievement, is a very demanding task. Privatising the electricity production and distribution networks leads in principle to increasing competition, but the electricity price becomes very variable with huge daily and seasonal fluctuations. To date, Switzerland counts 900 electric utilities. Opening the electricity market induces concentration and company merges. To promote an energy strategy, it is necessary to face in a lump the technological, economical and social realities. In the long run, renewable energies: small-scale hydroelectric power plants, biomass, wind, photovoltaics, geothermal energy, should have an important share in electricity production. In the mid term, natural gas and nuclear reactors will be used as transition energy sources. But all electric power plants, whenever nuclear or gas, or even renewable (as for instance wind power plants) must

  4. The pURI family of expression vectors: a versatile set of ligation independent cloning plasmids for producing recombinant His-fusion proteins.

    Science.gov (United States)

    Curiel, José Antonio; de Las Rivas, Blanca; Mancheño, José Miguel; Muñoz, Rosario

    2011-03-01

    A family of restriction enzyme- and ligation-independent cloning vectors has been developed for producing recombinant His-tagged fusion proteins in Escherichia coli. These are based on pURI2 and pURI3 expression vectors which have been previously used for the successful production of recombinant proteins at the milligram scale. The newly designed vectors combines two different promoters (lpp(p)-5 and T7 RNA polymerase Ø10), two different endoprotease recognition sites for the His₆-tag removal (enterokinase and tobacco etch virus), different antibiotic selectable markers (ampicillin and erythromycin resistance), and different placements of the His₆-tag (N- and C-terminus). A single gene can be cloned and further expressed in the eight pURI vectors by using six nucleotide primers, avoiding the restriction enzyme and ligation steps. A unique NotI site was introduced to facilitate the selection of the recombinant plasmid. As a case study, the new vectors have been used to clone the gene coding for the phenolic acid decarboxylase from Lactobacillus plantarum. Interestingly, the obtained results revealed markedly different production levels of the target protein, emphasizing the relevance of the cloning strategy on soluble protein production yield. Efficient purification and tag removal steps showed that the affinity tag and the protease cleavage sites functioned properly. The novel family of pURI vectors designed for parallel cloning is a useful and versatile tool for the production and purification of a protein of interest. PMID:21055470

  5. The Streamlining of the Kabinakagami River Hydroelectric Project Environmental Assessment: What is the "Duty to Consult" with Other Impacted Aboriginal Communities When the Co-Proponent of the Project is an Aboriginal Community?

    Directory of Open Access Journals (Sweden)

    Holly L. Gardner

    2015-06-01

    Full Text Available There is existing tension within many Aboriginal communities between economic development and preservation of traditional lands for the continued practice of traditional activities. The "duty to consult" doctrine has has become an important mechanism by which these concerns were identified and addressed (when possible prior to development. This is a legal requirement that is rooted in the Constitution Act (1982 and subsequent legal case law that has further defined and outlined requirements under this obligation. This article describes the process that was carried out to advance the proposed Kabinakagami River Hydro Project Class Environmental Assessment in Northern Ontario, Canada with an emphasis on the approach to Aboriginal consultation. This project is unique because the co-proponent of the project is an Aboriginal community, with several neighbouring Aboriginal communities potentially affected by the project. This project raises questions about the approach to carrying out the duty to consult in an effective way. An evaluative framework was developed to examine timeline, information, means, and flexibility and transparency of the process to highlight shortcomings in the process and make recommendations for improvement.

  6. Hydroelectricity and territories; L'hydroelectricite et les territoires

    Energy Technology Data Exchange (ETDEWEB)

    Rocq, Sylvie [Syndicat Mixte d' Etude et d' Amenagement de la Garonne, 61, rue Pierre Cazeneuve 31200 Toulouse (France); Moor, Jean-Francois; Comeau, Aline [Agence de l' eau Adour-Garonne, 90 rue de Feretra 31078 Toulouse Cedex 4 (France); Thomas, Michael [Etablissement Public Territorial du Bassin de la Dordogne - Epidor, Le Tournepique, 24250 Castelnaud-la-Chapelle (France)

    2012-01-15

    On our river territories, the development of renewable energy and the restoration of the quality of the aquatic ecosystems both illustrate the need to reconcile the different usages of water resources while still guaranteeing proper functioning of the ecosystems. Hydroelectricity is the crux of the problem. Because of its mountainous hydrographic network and its favourable hydrology, the Adour-Garonne basin witnessed large-scale development of its hydroelectric potential throughout the 20. century. Approaching the question of hydroelectricity from the point of view of the river territories puts all the challenges facing them into their true perspective. Two distinct examples in the Adour-Garonne basin illustrate the partnership between the Water Agency and the local authorities in the Garonne and Dordogne basins: on the Garonne River, reconciling water usages with the maintenance of adequate water levels at times of drought; on the Dordogne River, reducing the impact of the hydro-peaking. (authors)

  7. The net carbon footprint of a newly created boreal hydroelectric reservoir

    OpenAIRE

    Teodoru, Cristian R.; Bastien, Julie; Bonneville, Marie-Claude; del Giorgio, Paul A.; Demarty, Maud; Garneau, Michelle; Hélie, Hélie Jean-Francois; Pelletier, Luc; Prairie, Yves T.; Roulet, Nigel T.; Strachan, Ian B.; Tremblay, Alain

    2012-01-01

    We present here the first comprehensive assessment of the carbon (C) footprint associated with the creation of a boreal hydroelectric reservoir (Eastmain-1 in northern Québec, Canada). This is the result of a large-scale, interdisciplinary study that spanned over a 7-years period (2003–2009), where we quantified the major C gas (CO2 and CH4)sources and sinks of the terrestrial and aquatic components of the pre-flood landscape, and also for the reservoir following the impoundment in 2006. The ...

  8. Report on the renewal of the hydro-electric concessions

    International Nuclear Information System (INIS)

    The administrative procedures of the renewable of the hydro-electric concessions in France is a real problem, leading to too long time of the case files examination. This mission aimed to identify the technical and financial criteria on which the decision maker will base his choice to give the concessions renewal. This report exposes the evaluation and the recommendations of the mission. The first part establishes an evaluation of the situation of the hydro-electric concessions and the today renewal procedures. The second part presents a analysis of this situation and the recommendations. The last part brings the conclusions. (A.L.B.)

  9. Hydro-electric power project on the Toulnustouc River

    International Nuclear Information System (INIS)

    Hydro-Quebec has proposed the development of a hydro-electric power project on the Toulnustouc River, located between Saint-Anne Lake and Manic Reservoir. The work would involve the construction of a power generation plant of 526 MW, construction of a 77 m dam on the Toulnustouc River, 14 km downstream from the existing Lac-Saint-Anne dam, the creation of a new water expanse covering 22 square kilometers, the construction of an embankment, the strengthening of the existing Saint-Anne embankment, digging a 9.8 km gallery, and the construction of a flood spillway. This work would have consequences for three different sectors of the river: between the existing and the proposed dam, between the dam and the projected power plant, and between the power plant and the limit of the influence of the reservoir Manic-2. Hydro-Quebec would like the work to begin in July 2001, with the aim of having the plant in operation in 2005. The overall cost of the project is estimated at 600 million dollars. It is expected that the economic benefits for the region would be in the 211 million dollar range. An environmental assessment of the entire project was performed by Quebec Ministere de l'Environnement. The authors determined that the project was recognized as justified by the Ministere des Ressources Naturelles (Natural Resources Ministry) and concluded that the project was acceptable from an environmental point of view as long as six conditions were met. They touched on the construction of a flood spillway capable of evacuating 19 cubic meters per second at any time during the year, that water be evacuated downstream following a pre-determined debit that varies according to the time of year, monitoring of the brook trout population and its habitat, and environmental monitoring. 46 refs., 7 tabs., 2 figs., 1 annex

  10. 78 FR 26358 - Eagle Mountain Pumped Storage Hydroelectric Project, Eagle Crest Energy; Notice of Meeting With...

    Science.gov (United States)

    2013-05-06

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Eagle Mountain Pumped Storage Hydroelectric Project, Eagle Crest Energy...), on the Eagle Mountain Pumped Storage Hydroelectric Project. e. All local, state, and federal...

  11. 76 FR 22393 - Eagle Mountain Pumped Storage Hydroelectric Project, Eagle Crest Energy; Notice of Cancellation...

    Science.gov (United States)

    2011-04-21

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Eagle Mountain Pumped Storage Hydroelectric Project, Eagle Crest Energy... and Wildlife Service for the proposed Eagle Mountain Pumped Storage Hydroelectric Project....

  12. 77 FR 47628 - Eagle Mountain Pumped Storage Hydroelectric Project; Eagle Crest Energy; Notice of Meeting...

    Science.gov (United States)

    2012-08-09

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Eagle Mountain Pumped Storage Hydroelectric Project; Eagle Crest Energy... Management Act and the Federal Power Act), on the Eagle Mountain Pumped Storage Hydroelectric...

  13. Hydrologic Simulations Driven by Satellite Rainfall to Study the Hydroelectric Development Impacts on River Flow

    Directory of Open Access Journals (Sweden)

    Tuan B. Le

    2014-11-01

    Full Text Available This study assesses the impact of hydroelectric dams on the discharge and total suspended solids (TSS concentration in the Huong River basin in Vietnam. The analysis is based on hydrologic and sediment transport simulations by the Soil and Water Assessment Tool (SWAT model driven by the Tropical Rainfall Measuring Mission (TRMM 3B42V6 rainfall data, from January 2003 through December 2010. An upstream sub-basin not affected by the hydroelectric dams was used for model calibration. The calibration results indicate good agreement between simulated and observed daily data (0.67 Nash-Sutcliffe efficiency, 0.82 Pearson correlation coefficient. The calibrated model for discharge and TSS simulation is then applied on another major sub-basin and then the whole Huong River basin. The simulation results indicate that dam operation in 2010 decreased downstream discharge during the rainy season by about 35% and augmented it during the dry season by about 226%. The downstream TSS concentration has decreased due to the dam operation but the total sediment loading increased during the dry season and decreased during the rainy season. On average, the dam construction and operation affected the pattern of discharge more than that of the sediment loading. Results indicate that SWAT, driven by remotely sensed inputs, can reasonably simulate discharge and water quality in ungauged or poorly gauged river basins and can be very useful for water resources assessment and climate change impact studies in such basins.

  14. Feasibility determination of low head hydroelectric power development at existing sites: Mousam River Project

    Energy Technology Data Exchange (ETDEWEB)

    1979-06-01

    The technical and economic feasibility of low head hydroelectric power development at existing sites along the Mousam River in southeastern Maine was studied. The following areas were investigated: determination of available energy; development of restoration concepts; environmental studies; historical and archeological studies; assessment of civil construction requirements; geotechnical and geologic assessment of existing dams; assessment of turbine alternatives; assessment of generator and utility interface alternatives; economic analysis; and restoration concept evaluation and selection. The results of the hydropower evaluation showed that: of the seven sites evaluated, only four can be considered economically feasible for refurbishment at this time; the use of used and/or rebuilt equipment is more economically attractive than new equipment; the cost of equipment at each site was of the same order as the cost of the dam reconstruction; and the cost of fuel prices will be the determining feature of whether the sites should be reconstructed.

  15. Environmental Licensing for Hydroelectric Projects in Brazil : A Contribution to the Debate, Volume 1, Summary Report

    OpenAIRE

    World Bank

    2008-01-01

    This study points out that hydroelectric plants will continue to play a prominent role in the Brazilian electric matrix. A significant portion of the potential hydroelectric plants of the country is located in the Amazon, environmentally sensitive region. The licensing of hydroelectric projects in Brazil is considered a major obstacle for the expanding the capacity of generating electricit...

  16. 78 FR 62361 - Green Mountain Power Corporation; Vermont; Otter Creek Hydroelectric Project; Notice of Proposed...

    Science.gov (United States)

    2013-10-21

    ... Energy Regulatory Commission Green Mountain Power Corporation; Vermont; Otter Creek Hydroelectric Project... that could be affected by issuance of a new license for the Otter Creek Hydroelectric Project No. 2558..., as applicant for the Otter Creek Hydroelectric Project, has expressed an interest in this...

  17. Hydroelectric power industry to Africa; Kraftbransjen til Afrika

    Energy Technology Data Exchange (ETDEWEB)

    Hovland, Kjetil Malkenes

    2009-07-01

    Water power in Africa might become a vast industry for Norway. Several power companies are on their way. Power failures creates huge problems for the business life and growth in for instance Uganda. Norwegian hydroelectric power plant industry is involved in developing plants in Bugoye, Uganda.(AG)

  18. Climate change impacts on high-elevation hydroelectricity in California

    Science.gov (United States)

    Madani, Kaveh; Guégan, Marion; Uvo, Cintia B.

    2014-03-01

    While only about 30% of California's usable water storage capacity lies at higher elevations, high-elevation (above 300 m) hydropower units generate, on average, 74% of California's in-state hydroelectricity. In general, high-elevation plants have small man-made reservoirs and rely mainly on snowpack. Their low built-in storage capacity is a concern with regard to climate warming. Snowmelt is expected to shift to earlier in the year, and the system may not be able to store sufficient water for release in high-demand periods. Previous studies have explored the climate warming effects on California's high-elevation hydropower by focusing on the supply side (exploring the effects of hydrological changes on generation and revenues) ignoring the warming effects on hydroelectricity demand and pricing. This study extends the previous work by simultaneous consideration of climate change effects on high-elevation hydropower supply and pricing in California. The California's Energy-Based Hydropower Optimization Model (EBHOM 2.0) is applied to evaluate the adaptability of California's high-elevation hydropower system to climate warming, considering the warming effects on hydroelectricity supply and pricing. The model's results relative to energy generation, energy spills, reservoir energy storage, and average shadow prices of energy generation and storage capacity expansion are examined and discussed. These results are compared with previous studies to emphasize the need to consider climate change effects on hydroelectricity demand and pricing when exploring the effects of climate change on hydropower operations.

  19. Hydroelectric project at Angliers : Investigation and public hearing report

    International Nuclear Information System (INIS)

    Public hearings were held by the Bureau d'audiences publiques sur l'environnement concerning a proposed hydroelectric development project at Angliers, Quebec. The proposed hydroelectric plant is to be located at the outlet of the Des Quinze reservoir in the Temiscamingue region (northwest of the province). The site is within the municipality of Angliers, approximately 130 kilometres south of Rouyn-Noranda. The project will exploit the hydroelectric potential of the Ottawa River through a dam at Des Quinze reservoir, which is currently the property of the federal government. During the hearings, several issues were raised, and various topics examined. The political and administrative framework was reviewed, as well as the integration of the project within the community. The impacts, environmental as well as economic, were discussed. After careful examination of all the information, the Commission concluded that the hydroelectric project at Angliers was justified and acceptable from an environmental perspective. The expected economic impact on the community was an essential aspect in determining if the project was acceptable. refs., 4 figs

  20. A UK guide to intake fish-screening regulations, policy and best practice with particular reference to hydroelectric power schemes

    International Nuclear Information System (INIS)

    A review of fish screening regulations in England, Wales, Scotland, and Northern Ireland is presented, and a summary of findings on screening legislation is given. The views of hydroelectric scheme developers, owners and operators are considered, and recommendations including the development of a risk assessment procedure are discussed. Fish screening technology, bypasses and other escape routes, and common fault in screen design and operation are examined, and guidance to Best Practice is given. (UK)

  1. A UK guide to intake fish-screening regulations, policy and best practice with particular reference to hydroelectric power schemes

    Energy Technology Data Exchange (ETDEWEB)

    Turnpenny, A.W.H.; Struthers, G.; Hanson, P.

    1998-07-01

    A review of fish screening regulations in England, Wales, Scotland, and Northern Ireland is presented, and a summary of findings on screening legislation is given. The views of hydroelectric scheme developers, owners and operators are considered, and recommendations including the development of a risk assessment procedure are discussed. Fish screening technology, bypasses and other escape routes, and common fault in screen design and operation are examined, and guidance to Best Practice is given. (UK)

  2. Underground pumped storage hydroelectricity using abandoned works (deep mines or open pits) and the impact on groundwater flow

    OpenAIRE

    Pujades, Estanislao; Willems, Thibault; Bodeux, Sarah; Orban, Philippe; Dassargues, Alain

    2016-01-01

    Underground pumped storage hydroelectricity (UPSH) plants using open-pit or deep mines can be used in flat regions to store the excess of electricity produced during low-demand energy periods. It is essential to consider the interaction between UPSH plants and the surrounding geological media. There has been little work on the assessment of associated groundwater flow impacts. The impacts on groundwater flow are determined numerically using a simplified numerical model which is assumed to be ...

  3. Zumbro Hydroelectric Project: installation of third unit. Feasibility assessment report

    Energy Technology Data Exchange (ETDEWEB)

    Williamson, James V.

    1979-03-01

    The feasibility of adding a third generating unit at an existing hydro power plant near Rochester, Minn. was examined considering the economic, technical, and environmental aspects. Installation of the unit, aiming at an Oct. 1983 completion date, is recommended. (LCL)

  4. Obstacles to hydroelectric power. VDI conference on chances of hydroelectric power - conservation and environmental protection in conflict

    International Nuclear Information System (INIS)

    Hydroelectric power is one of the most efficient energy sources and presents no CO2 pollution problem, but there are obstacles as was shown at a VDI conference. Regional landscape conservation interests are in conflict with global environmental protection considerations. (orig.)

  5. Relationship Analysis of the Correlated Factors between Unintentional Inj ury and Family Envi-ronment of College Students%大学生意外伤害与环境相关因素的关系研究

    Institute of Scientific and Technical Information of China (English)

    陈思思; 周乐山

    2014-01-01

    目的:探讨大学生意外伤害与环境因素的关系,为预防和控制大学生意外伤害的发生提供参考依据.方法采用自编调查表和环境量表中文版(the family environment scale-Chinese version,FES-CV)对71例意外伤害大学生和匹配的71例未发生意外伤害学生的环境因素进行评定,运用t检验、χ2检验、条件 Logistic 回归等分析意外伤害与环境相关因素的关系.结果病例组与对照组在成绩、是否独生、喝酒情况、家庭月收入、教育方式方面差异有统计学意义(均P<0.05).FES-CV8个维度中病例组的亲密度、情感表达得分高于对照组(均P<0.05).多因素分析显示是否独生、家庭月收入、亲密度是大学生意外伤害的主要影响因素(均P<0.05).结论应根据意外伤害大学生的环境特征采取相应的干预措施,以降低大学生意外伤害的发生率.%Objective To discuss the relationships between unintentional injury and family environment in college students,so as to provide references for preventing and controlling unintentional inj ury of college students.Methods By using self-designed questionnaire and the Family Environment Scale Chinese version to assess 7 1 inj ured and matched 7 1 uninj ured cases’s family environment factors and then analyze the rela-tionships between unintentional inj ury and family environment relevant factors by using T test and condi-tional Logistic regression.Results There were statistic significances of grades,whether the only child in the family,drinking situation,family monthly income and education style between two groups of students (all P<0.05).FES-CV scale of score of intimacy and emotional expression in case group were higher than which in control group (all P<0.05).Multivariate analysis showed that whether the only child in the fami-ly,family monthly income and intimacy were the maj or influencing factors of unintentional inj ury of college students (all P<0

  6. Drought Impacts on Reservoir Storage and Hydro-electricity Production in Southeastern Brazil

    Science.gov (United States)

    Scanlon, B. R.; Melo, D. D.; Yin, L.; Wendland, E.

    2015-12-01

    Brazilian hydroelectric plants (HP) generate ~85% of the total electricity in the country (138 GW). More than half of the number largest reservoirs are located in the Southeast/Midwest region, where ~50% of the population (~100 million) lives. The 2014 drought raised several questions about the resilience of the water sources when several urban centers, including Brazilian's largest metropolis (São Paulo, 20 million people), had their water supply threatened. Such drought also affected reservoirs of hydroelectric plants. This study assesses how the storage and, thus the electricity generation, in 14 of the largest reservoirs were affected by drought events within the past 20 years. We computed the Standardized Precipitation Index (SPI) to identify rainfall anomalies throughout the analyzed period. To evaluate the impacts on surface water, we assessed the changes in total (surface+ subsurface) runoff and soil moisture from Global Land Data Assimilation System (GLDAS) and in Total Water Storage (TWS) from Gravity Recovery and Climate Experiment (GRACE) satellite data. We evaluated the anomalies and significance of the changes in reservoir storage (RS) and electricity generation. The results show that severe dry years (-1.5 resilience in the future.

  7. Mines as lower reservoir of an UPSH (Underground Pumping Storage Hydroelectricity): groundwater impacts and feasibility

    Science.gov (United States)

    Bodeux, Sarah; Pujades, Estanislao; Orban, Philippe; Dassargues, Alain

    2016-04-01

    The energy framework is currently characterized by an expanding use of renewable sources. However, their intermittence could not afford a stable production according to the energy demand. Pumped Storage Hydroelectricity (PSH) is an efficient possibility to store and release electricity according to the demand needs. Because of the topographic and environmental constraints of classical PSH, new potential suitable sites are rare in countries whose topography is weak or with a high population density. Nevertheless, an innovative alternative is to construct Underground Pumped Storage Hydroelectricity (UPSH) plants by using old underground mine works as lower reservoir. In that configuration, large amount of pumped or injected water in the underground cavities would impact the groundwater system. A representative UPSH facility is used to numerically determine the interactions with surrounding aquifers Different scenarios with varying parameters (hydrogeological and lower reservoir characteristics, boundaries conditions and pumping/injection time-sequence) are computed. Analysis of the computed piezometric heads around the reservoir allows assessing the magnitude of aquifer response and the required time to achieve a mean pseudo-steady state under cyclic solicitations. The efficiency of the plant is also evaluated taking the leakage into the cavity into account. Combining these two outcomes, some criterions are identified to assess the feasibility of this type of projects within potential old mine sites from a hydrogeological point of view.

  8. Identification of a Waipawa Formation equivalent in the upper Te Uri Member of the Whangai Formation : implications for depositional history and age

    International Nuclear Information System (INIS)

    Stable isotopes and biomarkers have identified a unit with similar organic geochemistry to the Waipawa Formation, in the upper Te Uri Member of the Whangai Formation, exposed in the Akitio River, at Tawanui, southern Hawke's Bay, New Zealand. At Tawanui, the uppermost greensand of the Te Uri Member contains a large positive δ13C isotopic excursion from -27.0 permille to -20 permille and an increase in total organic carbon from 0.1% to 1.0%. Biomarker analyses demonstrate a similar C30 sterane fingerprint to other deposits of the Waipawa Formation. We propose that the uppermost greensand of the Te Uri Member at Tawanui is a condensed stratigraphic equivalent of the Waipawa Formation at nearby Angora Stream and other East Coast Basin localities. This correlation demonstrates that Waipawa Formation is Middle Teurian (Middle Paleocene) and precedes the Late Paleocene thermal maximum event by c. 5 m.y. The likely upwelling event that resulted in deposition of the Waipawa Formation was geographically widespread but probably restricted to the outer shelf/upper slope. In places, biogenic activity prevented the preservation of organic carbon in equivalent condensed stratigraphic intervals. Localised restriction of upwelling and black shale deposition may be demonstrated by the occurrence of a thick black shale at Angora Stream only c. 10 km from the coeval greensands at Tawanui. Alternatively, Oligocene-Miocene east-west shortening and structural reorganisation in the East Coast Basin may have juxtaposed facies that were originally many tens of kilometres apart. Our correlation also implies that the Te Uri Member is diachronous. It may have been on the outermost shelf to upper slope during lowstand conditions, where it is oldest, to higher on the shelf during transgression and highstand conditions. (author). 25 refs., 6 figs., 1 tab

  9. Risk factors for the presence of Aedes aegypti and Aedes albopictus in domestic water-holding containers in areas impacted by the Nam Theun 2 hydroelectric project, Laos

    NARCIS (Netherlands)

    Hiscox, A.F.; Kaye, A.; Vongphayloth, K.; Banks, I.; Piffer, M.; Khammanithong, P.; Sananikhom, P.; Kaul, S.; Hill, N.; Lindsay, S.W.; Brey, P.T.

    2013-01-01

    We assessed risk factors for vectors of dengue and chikungunya viruses near a new hydroelectric project, Nam Theun 2, in Laos. Immature stages of Aedes aegypti were found only in sites within 40 km of the urban provincial capital, but Aedes albopictus was found throughout. Aedes aegypti pupae were m

  10. Comparison of Gross Greenhouse Gas Fluxes from Hydroelectric Reservoirs in Brazil with Thermopower Generation

    Science.gov (United States)

    Rogerio, J. P.; Dos Santos, M. A.; Matvienko, B.; dos Santos, E.; Rocha, C. H.; Sikar, E.; Junior, A. M.

    2013-05-01

    Widespread interest in human impacts on the Earth has prompted much questioning in fields of concern to the general public. One of these issues is the extent of the impacts on the environment caused by hydro-based power generation, once viewed as a clean energy source. From the early 1990s onwards, papers and studies have been challenging this assumption through claims that hydroelectric dams also emit greenhouse gases, generated by the decomposition of biomass flooded by filling these reservoirs. Like as other freshwater bodies, hydroelectric reservoirs produce gases underwater by biology decomposition of organic matter. Some of these biogenic gases are effective in terms of Global Warming. The decomposition is mainly due by anaerobically regime, emitting methane (CH4), nitrogen (N2) and carbon dioxide (CO2). This paper compare results obtained from gross greenhouse fluxes in Brazilian hydropower reservoirs with thermo power plants using different types of fuels and technology. Measurements were carried in the Manso, Serra da Mesa, Corumbá, Itumbiara, Estreito, Furnas and Peixoto reservoirs, located in Cerrado biome and in Funil reservoir located at Atlantic forest biome with well defined climatologically regimes. Fluxes of carbon dioxide and methane in each of the reservoirs selected, whether through bubbles and/or diffusive exchange between water and atmosphere, were assessed by sampling. The intensity of emissions has a great variability and some environmental factors could be responsible for these variations. Factors that influence the emissions could be the water and air temperature, depth, wind velocity, sunlight, physical and chemical parameters of water, the composition of underwater biomass and the operational regime of the reservoir. Based in this calculations is possible to conclude that the large amount of hydro-power studied is better than thermopower source in terms of atmospheric greenhouse emissions. The comparisons between the reservoirs studied

  11. Digital Modeling and Visualization of Hydroelectric Engineering Geoinformation

    Institute of Scientific and Technical Information of China (English)

    LIU Donghai; ZHONG Denghua; LI Mingchao

    2006-01-01

    To describe the spatial tendency and complex relationship of geological structures, a digital modeling based on geographic information system and the visualization of hydroelectric engineering geology information are presented. The functions of information visual query, spatial cutting,section drawing, and coupled analysis with hydraulic structures are realized. The geologic model can match the attribute data with the shape data of geological structures, and organize the information for spatial query and analysis of the 3D model. With an application in Laxiwa hydroelectric project on the upriver of Huanghe River, the method provides a 3D parallel section view and query results of geoinformation, and 3D section views of geoinformation along axis of spillway tunnel, and along the 5th axis with underground structures, respectively.

  12. Model documentation report: Short-Term Hydroelectric Generation Model

    International Nuclear Information System (INIS)

    The purpose of this report is to define the objectives of the Short- Term Hydroelectric Generation Model (STHGM), describe its basic approach, and to provide details on the model structure. This report is intended as a reference document for model analysts, users, and the general public. Documentation of the model is in accordance with the Energy Information Administration's (AYE) legal obligation to provide adequate documentation in support of its models (Public Law 94-385, Section 57.b.2). The STHGM performs a short-term (18 to 27- month) forecast of hydroelectric generation in the United States using an autoregressive integrated moving average (UREMIA) time series model with precipitation as an explanatory variable. The model results are used as input for the short-term Energy Outlook

  13. The development of advanced hydroelectric turbines to improve fish passage survival

    Energy Technology Data Exchange (ETDEWEB)

    Cada, Glenn F. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

    2001-09-01

    Recent efforts to improve the survival of hydroelectric turbine-passed juvenile fish have explored modifications to both operation and design of the turbines. Much of this research is being carried out by power producers in the Columbia River basin (U.S. Army Corps of Engineers and the public utility districts), while the development of low impact turbines is being pursued on a national scale by the U.S. Department of Energy. Fisheries managers are involved in all aspects of these efforts. Advanced versions of conventional Kaplan turbines are being installed and tested in the Columbia River basin, and a pilot scale version of a novel turbine concept is undergoing laboratory testing. Field studies in the last few years have shown that improvements in the design of conventional turbines have increased the survival of juvenile fish. There is still much to be learned about the causes and extent of injuries in the turbine system (including the draft tube and tailrace), as well as the significance of indirect mortality and the effects of turbine passage on adult fish. However, improvements in turbine design and operation, as well as new field, laboratory, and modeling techniques to assess turbine-passage survival, are contributing toward resolution of the downstream fish passage issue at hydroelectric power plants.

  14. Accumulation of total mercury and methyl mercury in insect larvae of hydroelectric reservoirs

    International Nuclear Information System (INIS)

    The bioaccumulation of both total mercury (Hg) and methyl mercury (MeHg) concentrations in insect larvae of hydroelectric reservoirs and natural lakes in northern Quebec were studied. Sampling was carried out during a four year study at the James Bay La Grande hydroelectric complex. The objective was to assess the influence of flooding history of lake sediments, flooded podzol, or peat on Hg accumulation in benthic invertebrates. Mean total Hg and MeHg concentrations in insect larvae from the reservoirs were found to be 3-5 times higher than in larvae from natural lakes. The large variability in Hg concentrations could be related to feeding behavior and substrate type. It was suggested that factors other than MeHg content of flooded soils may affect the accumulation of these compounds in insects. Suspended particulate matter (SPM) eroded from flooded soils and bacterial activity could also indirectly transfer MeHg from flooded soils to insect larvae. Since insects constitute a major part of the food chain, they are also an important source of total Hg and MeHg contamination in fishes. 57 refs., 3 tabs., 4 figs

  15. Power and dignity: the social consequences of hydro-electric development for the James Bay Cree

    International Nuclear Information System (INIS)

    The social impact that large-scale hydro-electric development has on the Cree of James Bay following the construction of the La Grande Complex was discussed. Many environmental changes were brought about by dam construction. The project, which also involved the first settlement (the James Bay and Northern Quebec Agreement) directed at extinguishing aboriginal title to land and natural resources in Canada, resulted in several relocations of Cree communities. In addition to compensation, the Agreement included a formal procedure for environmental and social impact assessment for development projects. However, there was little commitment, as a matter of corporate or government policy, to monitoring any of the social impacts. This paper is a preliminary response to an appeal for attention to be focused on the social consequences of hydro-electric development for the Cree in James Bay. Data from social service files indicate that the rapid centralization of the James Bay Cree into structured communities led to social instability in the villages, reflected by high frequencies in suicide, neglect of children, vandalism and drug and alcohol abuse. The material presented here is expected to serve as a warning that in further developing the far North of Quebec the pace of social change in Cree society will have to be slowed down to avoid social destruction of the native communities. 15 refs., 2 tabs

  16. Open system architecture for condition based maintenance applied to a hydroelectric power plant

    Energy Technology Data Exchange (ETDEWEB)

    Amaya, E.J.; Alvares, A.J. [University of Brasilia (UnB), DF (Brazil). Mechanical and Mechatronic Dept.], Emails: eamaya@unb.br, alvares@AlvaresTech.com; Gudwin, R.R. [State University of Campinas (UNICAMP), SP (Brazil). Computer Engineering and Industrial Automation Dept.], E-mail: gudwin@dca.fee.unicamp.br

    2009-07-01

    The hydroelectric power plant of Balbina is implementing a condition based maintenance system applying an open, modular and scalable integrated architecture to provide comprehensive solutions and support to the end users like operational and maintenance team. The system called SIMPREBAL (Predictive Maintenance System of Balbina) is advocate of open standards, in particular through collaborative research programmers. In the developing is clearly understands the need for both, industry standards and a simple to use software development tool chain, supporting the development of complex condition based maintenance systems with multiple partners. The Open System Architecture for Condition Based Maintenance (OSA-CBM) is a standard that consider seven hierarchic layers that represent a logic transition or performed data flow from the data acquisition layer, through the intermediates layers as signal processing, condition monitor, health assessment, prognostics and decision support, to arrive to the presentation layer. SIMPREBAL is being implementing as an OSA-CBM software framework and tool set that allows the creation of truly integrated, comprehensive maintenance solutions through the internet. This paper identifies specific benefits of the application of the OSA-CBM in comprehensive solutions of condition based maintenance for a hydroelectric power plant. (author)

  17. Hydroelectric power plants. 2. enl. ed. Wasserkraftanlagen; Klein- und Kleinstkraftwerke

    Energy Technology Data Exchange (ETDEWEB)

    Palffy, S.O.; Brada, K.; Hartenstein, R.; Mueller, U.; Nowotny, G.; Partzsch, P.; Roemer, K.H.; Schlimgen, W.; Tratz, D.; Walcher, H.

    1994-01-01

    Small-scale power plants in the range below 500 kW make an important contribution to power generation. The book contains practical information on hydroelectric power plants, criteria for turbine selection, electric equipment, and the Ossberger turbine. Problems concerning taxation and energy and water legislation are gone into. Also discussed are economic criteria during acquisition, new construction, and modernisation for the purpose of electric power generation and grid power supply. (DG). 174 figs.

  18. Reservoir release management program for the Agus river hydroelectric complex

    International Nuclear Information System (INIS)

    Discussed in this report is a computer program developed for a reservoir release management of the Agus River Hydroelectric Complex of Mindanao's power system in the Philippines. This program is used to determine the base and peak capabilities of the equivalent hydro plant which are basic inputs to long-term generation planning. Although the simulation is for the short-term, the program can be modified for annual simulation at monthly intervals. (author). 5 figs, 3 tabs

  19. Dry Falls Dam potential hydroelectric power. Feasibility study

    Energy Technology Data Exchange (ETDEWEB)

    HOsey, Harry P.

    1979-01-01

    The feasibility of constructing a low-head hydroelectric power plant at the existing Dry Falls Dam in Washington was studied considering technical, economic, environmental, regulatory, and safety factors. As a result of this study it is recommended that a 12 MW power plant be installed. Annual energy production would be 56 million kWh at an initial cost of 21.2 mills/kWh. (LCL)

  20. Risk Aversion and Dynamic Games Between Hydroelectric Operators under Uncertainty

    OpenAIRE

    Abdessalem Abbassi; Ahlem Dakhlaoui; Tamini, Lota D.

    2014-01-01

    This article analyses management of hydropower dams within monopolistic and oligopolistic competition and when hydroelectricity producers are risk averse and face demand uncertainty. In each type of market structure we analytically determine the water release path in closed-loop equilibrium. We show how a monopoly can manage its hydropower dams by additional pumping or storage depending on the relative abundance of water between different regions to smooth the effect of uncertainty on electri...

  1. Costs for renewable electricity. Small-scale hydroelectric power

    International Nuclear Information System (INIS)

    The aim of the study on the title subject is to provide an objective basis for the determination of the assumptions that are used for the calculation of the so-called uneconomic top of electricity production from renewable energy sources, carried out by ECN and KEMA. The results will be used for the determination of the subsidy tariffs for small-scale hydroelectric power plants and is part of the Environmental Quality of Electricity Production (MEP, abbreviated in Dutch) policy

  2. Hydroelectric power utilization of the River Crna Reka

    International Nuclear Information System (INIS)

    In the paper several feasibility studies for rational use of the Macedonian River Crna Reka, developed by foreign companies are analysed. The utilization of the hydro-power potential of the River Crna Reka is predicted to be by realization of two hydroelectric power plants with total capacity of 450 MW, as well as annual electric power generation of 600 GWh. This two HPPs will facilitate the development of the Macedonian electric power system

  3. Conjunctive Optimization of Hydroelectricity Benefits and Flood Damage Costs

    OpenAIRE

    AÇANAL, Neşe; HAKTANIR, Tefaruk

    1999-01-01

    An Incremental Dynamic Programming program is developed to optimize both the firm and secondary energies of hydroelectric generation at monthly periods. First, the six-stage flood routing program developed in a previous study is applied sequentially to the Yedigöze, Çatalan, and Seyhan dams, all on the Seyhan River in Turkey, for 18 combinations resulting from different active storages, and optimum flood operation policies for all three dams are determined. Second, the Dynamic Progra...

  4. Cross currents : hydroelectricity and the engineering of northern Ontario

    International Nuclear Information System (INIS)

    The history of hydroelectric development in northern Ontario was reviewed and analysed with special emphasis on the developments along the Mattagami and Abitibi Rivers. The objective was to examine the important factors that shaped modern hydroelectric development in Canada. System builders, the privately owned Nesbitt Thomson Company, the publicly owned Hydro Electric Power Corporation of Ontario and the eventual evolution of the single power system under Ontario Hydro are chronicled. Broad historical themes such as the technological impacts, regionalism, indigenous rights, plus environmental and economic issues are examined, in addition to an appreciation of the importance of electricity in the manufacturing sector of Ontario, the impact of hydroelectric development on the northern environment and on the northern First Nations, who rely on rivers for their subsistence. Until fairly recently, government policies and interpretations of law often excluded the recognition of Aboriginal uses of river systems, thereby limiting First Nations' peoples ability to practice traditional ways of life. In essence, the book is an account of how the northeastern power system in Ontario shaped the social, political and natural environments and how the development of northeastern power sources by southern power developers shaped the regional interactions between Ontario's north and south. refs., figs

  5. The Romaine hydroelectric project : a stimulating, profitable and ecologic project

    International Nuclear Information System (INIS)

    Construction has begun for the necessary infrastructure for the Romaine Hydroelectric Power Project in Quebec. The project will produce 1,550 megawatts of power from the complex just north of Havre-Saint-Pierre. Hydro Quebec plans to build 4 hydroelectric dams and generating stations along the river, flooding 279 km2 of forest. In addition, the project involves the construction of culverts, spillways, new roads, bridges and 500 km of new power transmission lines for integration into the power grid. This article discussed the economic impact that the project will have on Quebec and the north shore. The project is necessary to meet both Quebec's growing energy needs and export demands from neighbouring jurisdictions. Hydro-Quebec claims that hydroelectricity has the potential to replace coal and nuclear plants in export markets, thereby reducing greenhouse gas emissions. Quebec's energy demand for 2010 is estimated at 179 TWh. New energy sources on the Rupert River will add 6 TWh of generating capacity. In 2008, Hydro-Quebec's net electricity export was 8 per cent of its sales, but the utility made 32 per cent of its income from those exports. 3 figs.

  6. Wind energy and Swiss hydroelectric power

    International Nuclear Information System (INIS)

    This final report for the Swiss Federal Office of Energy (SFOE) presents the results of a study made to analyse the possible changes in the European electricity supply system, in particular with reference to the increasing amount of wind-generated electricity. Also, the role of peak-power and the optimisation potential for Swiss hydropower was examined. The part to be played by Swiss wind power in the future and the government's sustainability strategy is also looked at. The report looks at electricity dealing in the European context and introduces a method of assessment for Swiss hydropower. The report's conclusions and recommendations cover the increasing importance of energy storage in hydropower schemes, the question if grid capacity is sufficient under the new conditions, the market liberalisation question and possible ecological problems that may be encountered

  7. Feasibility of determination of low-head hydroelectric power development at existing sites. Dan River hydroelectric development. Feasibility report

    Energy Technology Data Exchange (ETDEWEB)

    Jordan, S. J.; Sinclair, J. P.

    1979-04-01

    The results of a study to determine the feasibility of redeveloping the hydroelectric power potential of the Dan River in Danville, Virginia, are reported. Redeveloping the power potential would involve refurbishing and/or rehabilitating the existing power plant at the Schoolfield Dam and building a new power facility at the Union Street Dam downstream of the Schoolfield Dam. The technical, economic, environmental, and safety aspects were evaluated and indicate that, for the present, this development is not economically feasible. (LCL)

  8. The impact of hydroelectricity development on natural flow discharge and total suspended sediment in the Huong River basin, Vietnam

    Science.gov (United States)

    Le, T. B.; Sharif, H. O.

    2012-12-01

    This study aims to evaluate the impact of hydroelectricity dams on discharge and TSS (Total Suspended Sediment) concentration of the Huong River basin in Vietnam. The study is based on the simulation of the SWAT (Soil and Water Assessment Tool) model using the TRMM (Tropical Rainfall Measuring Mission) 3B42 and APHRODITE Water Resources (Asian Precipitation - Highly-Resolved Observation Data Integration Towards Evaluation of Water Resources) V1003R1 Monsoon Asia rainfall products. Study period is eight years, from January, 2003 to December, 2010. A sub-basin upstream of the Huong River basin that receives zero impact from the hydroelectricity dams is used to calibrate the model. Calibrated model for discharge and TSS simulation is then applied for another major sub-basin and the whole Huong River basin. Preliminary results indicate acceptable correlation coefficients between simulated and observed data (R2 ~ 0.5 - 0.7). Results also show that the operation of a hydroelectricity dam in 2010 has significantly decreased 80% - 85% of Huong River discharge during the rainy season of 2010. TSS concentration is also affected by the presence of the dam, but not clearly demonstrated in study results because other factors such as sand and gravel exploitation is also major in adjusting TSS.

  9. An estimation of the capacity to produce hydrogen by wasted hydroelectric energy for the three largest Brazilian hydroelectric

    Energy Technology Data Exchange (ETDEWEB)

    Padilha, Janine C.; Trindade, Leticia G. da; Souza, Roberto F. de [Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS (Brazil). Inst. of Chemistry], Email: janine@iq.ufrgs.br; Miguel, Marcelo [Itaipu Binacional, Foz do Iguacu, PR (Brazil)

    2010-07-01

    The use of water wasted in hydroelectric plants as normalization dam excess, which constitute a hydrodynamic potential useful to generate electric energy which can be subsequently used to produce hydrogen and its subsequent consumption in fuel cells has been considered as an alternative for hydraulic energy-rich countries like Brazil. The case is examined in which all the water wasted in the hydroelectric plants, spilled by dam gates to maintain acceptable water levels, from the 3 largest Brazilian hydroelectric plants was used to produce hydrogen. During the year of 2008, the electric energy produced from this utilization would have been equivalent to 52.8 TWh, an amount that corresponds to an increase of ca. 15% of the total electric energy produced in the country. Furthermore, if this amount of hydrogen was used in the replacement of internal combustion vehicles by fuel cells, this would have prevented the production of 2.26 x 10{sup 7} ton of Co{sub 2} per year. This plan would also significantly decrease production and release of greenhouse gases. (author)

  10. Access to realization of small hydroelectric power station in Republic of Macedonia

    International Nuclear Information System (INIS)

    In the paper an overview of the small-scale hydroelectric power plants is presented. The categorization groups of small to micro hydroelectric power plants by different countries are given. Also, the evaluation models of the projects for realization the small hydroelectric power plants are analysed. The aim of the paper is to stress the advantages of the small hydro projects and their implementation in Macedonia

  11. Will initiatives to promote hydroelectricity consumption be effective? Evidence from univariate and panel LM unit root tests with structural breaks

    International Nuclear Information System (INIS)

    This paper examines whether initiatives to promote hydroelectricity consumption are likely to be effective by applying univariate and panel Lagrange Multiplier (LM) unit root tests to hydroelectricity consumption in 55 countries over the period 1965–2011. We find that for the panel, as well as about four-fifths of individual countries, that hydroelectricity consumption is stationary. This result implies that shocks to hydroelectricity consumption in most countries will only result in temporary deviations from the long-run growth path. An important consequence of this finding is that initiatives designed to have permanent positive effects on hydroelectricity consumption, such as large-scale dam construction, are unlikely to be effective in increasing the share of hydroelectricity, relative to consumption of fossil fuels. - Highlights: • Applies unit root tests to hydroelectricity consumption. • Hydroelectricity consumption is stationary. • Shocks to hydroelectricity consumption result in temporary deviations from the long-run growth path

  12. Sanitary risks related to the installation of hydroelectric turbines on drinking water networks

    International Nuclear Information System (INIS)

    With the notion of sustainable development gaining ground, practices aimed at saving water and energy are more and more frequent, particularly the installation of hydroelectric turbine on drinking water networks. It is essential in this case that the water quality should not be deteriorated, and the water supply for consumption and fire protection has to be prioritized over energy production. Thus, a sanitary risk assessment must be done and actions to control the described critical points have to be taken. The installation of a turbine is an additional risk whereas it is not necessary for drinking water production and distribution. As a consequence, a quality management system including the turbine and additional quality water monitoring should be carried out. (authors)

  13. Solar hydroelectric systems: a cheaper means for enhancing the generating potentials of the Akosombo Dam

    International Nuclear Information System (INIS)

    The current unpredictable weather pattern in Ghana has revealed our vulnerability, as a nation with regard to energy needs. Thermal plants have been advocated as a short-term solution to the current energy deficiency but a strategy would necessarily have to be drawn for long-term sustainability and security, especially of the Akosombo and Kpong dams. In addition, there is growing emphasis on minimizing environmental degradation. An assessment has been made to explore the possibility of using photovoltaic cells to store energy as potential energy in dams. This would serves as a means of conserving water in dams. The advocated solar hydroelectric systems might be cheaper than any existing technology for the exploitation of solar energy in Ghana (au)

  14. Study on safety operation for large hydroelectric generator unit

    Science.gov (United States)

    Yan, Z. G.; Cui, T.; Zhou, L. J.; Zhi, F. L.; Wang, Z. W.

    2012-11-01

    Hydroelectric generator unit is a complex mechanical system which is composed of hydraulic turbine and electric generator. Rotary system is supported by the bearing bracket and the reinforced concrete structures, and vibration problem can't be avoided in the process of operating. Many large-scale hydroelectric units have been damaged because of the vibration problem in recent years. As the increase of the hydraulic turbine unit capacity and water head, the safe operation of hydraulic turbine has become a focus research in many countries. The operating characteristics of the hydraulic turbine have obvious differences at different working conditions. Based on the combination of field measurement and theoretical calculation, this paper shows a deep research on the safe operation of a large-scale Francis turbine unit. Firstly, the measurements of vibration, swing, pressure fluctuation and noise were carried out at 4 different heads. And also the relationships between vibrations and pressure fluctuations at different heads and working conditions were analysed deeply. Then the scientific prediction of safe operation for the unit at high head were done based on the CFD numerical calculation. Finally, this paper shows the division of the operating zone for the hydroelectric unit. According to the experimental results (vibrations, swings, pressure fluctuations and noise) as well as the theoretical results, the operating zone of the unit has been divided into three sections: prohibited operating zone, transition operating zone and safe operating zone. After this research was applied in the hydropower station, the security and economic efficiency of unit increased greatly, and enormous economic benefits and social benefits have been obtained.

  15. Measurents of natural radioactivity in an underground hydroelectric power plant

    International Nuclear Information System (INIS)

    In underground working places, especially when ventilation is not properly regulated, large amounts of natural radioactivity can be found. This can give rise to potential exposures of non-negligible magnitude. Direct measurements of gamma radiation and radon were carried out during excavation works for the construction of an hydroelectric plant in the north of Italy. After the construction of the plant, in order to reduce radon concentrations and to improve ventilation effectiveness, the main entry gate was motorized and automated. Then, in order to find the optimal speed for the fans located in the galleries and in the power plant, radon and airflow velocity were measured. Correlation data between airflow and radon concentrations were found. An automatic regulation system has been set up using air velocity detectors and slightly modifying the software for the control and regulation of the power plant. Measurements must be made in order to identify radon sources and evaluate quantitative contributions as a function of ventilation. Underground hydroelectric plants are provided with entry galleries as well as secondary galleries from which radon coming out from the soil and the walls can exhale in quantities that depend on the contents of 226Ra in the rocks and in the building materials. Other radon sources are the water coming out from the walls of the galleries and the water in the deep well located at the bottom of the power plant. Geological studies and mathematical models are useful means for the analysis of the relative contributions of the main sources as well as for the prediction of the effects deriving from modifications of the hydroelectric plant ventilation system or resulting from other important structural changes. (author)

  16. Hydroelectricity, sustainability, and the role of probabilistic inflow forecasting

    Science.gov (United States)

    Sharma, Ashish; Mehrotra, Raj

    2014-05-01

    Hydroelectricity is one of the oldest energy options known to mankind. While public perceptions of hydroelectricity have had their ups and downs, there is growing consensus that it offers one of the most sustainable options to energy reliability, as well as one of the most cost-effective one. This talk focusses on the factors leading to loss of efficiency due to uncertainty in energy demands and reservoir inflows. The talk formulates the need for probabilistic forecasts of demand and inflow, and presents the obstacles in formulating such forecasts due to the complexities of the climate system. A case is made for the use of ensemble forecasts, in this case formulated using statistical alternatives assuming global sea surface temperatures as a key source of information content. A newly formulated approach for identifying nonlinear dependence between variables (termed as the Partial information - Partial Weight, or PI-PW approach, see Sharma and Mehrotra (2014) for details), and subsequent use of these variables to formulate a probabilistic forecasting model is then presented, a key feature of this model being the lack of any major assumption in the nature of dependence (or variables) being modelled. The talk concludes with a list of challenges that still need overcoming, in ensuring hydroelectricity continues to be considered as a key sustainable energy alternative as we head into times of growing disparity between energy resource and consumption. Reference: Sharma, A., and R. Mehrotra (2014), An information theoretic alternative to model a natural system using observational information alone, Water Resources Research, 49, doi:10.1002/2013WR013845.

  17. Study on safety operation for large hydroelectric generator unit

    International Nuclear Information System (INIS)

    Hydroelectric generator unit is a complex mechanical system which is composed of hydraulic turbine and electric generator. Rotary system is supported by the bearing bracket and the reinforced concrete structures, and vibration problem can't be avoided in the process of operating. Many large-scale hydroelectric units have been damaged because of the vibration problem in recent years. As the increase of the hydraulic turbine unit capacity and water head, the safe operation of hydraulic turbine has become a focus research in many countries. The operating characteristics of the hydraulic turbine have obvious differences at different working conditions. Based on the combination of field measurement and theoretical calculation, this paper shows a deep research on the safe operation of a large-scale Francis turbine unit. Firstly, the measurements of vibration, swing, pressure fluctuation and noise were carried out at 4 different heads. And also the relationships between vibrations and pressure fluctuations at different heads and working conditions were analysed deeply. Then the scientific prediction of safe operation for the unit at high head were done based on the CFD numerical calculation. Finally, this paper shows the division of the operating zone for the hydroelectric unit. According to the experimental results (vibrations, swings, pressure fluctuations and noise) as well as the theoretical results, the operating zone of the unit has been divided into three sections: prohibited operating zone, transition operating zone and safe operating zone. After this research was applied in the hydropower station, the security and economic efficiency of unit increased greatly, and enormous economic benefits and social benefits have been obtained.

  18. Beyond carbon: Quantifying environmental externalities as energy for hydroelectric and nuclear power

    International Nuclear Information System (INIS)

    Together, hydroelectric and nuclear power account for roughly 30% of all electricity generated on earth. Both technologies are often presented as answers to the dual challenge of meeting ever-increasing global energy demand while meeting stricter GHG (greenhouse gas) emissions targets. Indeed, the last two decades have witnessed a great deal of research on the life cycle GHG emissions of these technologies. On the basis of carbon intensity, the general consensus is that these technologies are more efficient than all other technologies of similar scale (e.g. coal, natural gas). However, hydroelectric and nuclear power come with environmental costs that sit outside the boundaries of traditional energy-based accounting methods, including water consumption, land change, and waste generation. We provide a novel framework that integrates energy and environmental life cycle assessment techniques so that dissimilar impacts can be more equitably assessed. The analysis considers diffusion- and centrifuge-based nuclear technologies, as well as reservoir and run-of-river hydropower. Results suggest that these resources are substantially less efficient (in our examples, anywhere from 5 to 85%) when key externalities are included. In the conclusion, we reflect on the benefits of using a physics-based method of measuring the externalities of power generation. - Highlights: • Hydro and nuclear power have multiple environmental impacts beyond GHG emissions. • Non-GHG externalities include water consumption, land change, waste, and safety. • We quantify life cycle externalities by estimating the energy needed to mitigate them. • EF (efficiency factors) [MWhe/MWhth] decrease when mitigation energy is included. • EFs fall by 5–85% when impacts are internalized, depending on technology type

  19. An Adaptive Multivariable Control System for Hydroelectric Generating Units

    Directory of Open Access Journals (Sweden)

    Gunne J. Hegglid

    1983-04-01

    Full Text Available This paper describes an adaptive multivariable control system for hydroelectric generating units. The system is based on a detailed mathematical model of the synchronous generator, the water turbine, the exiter system and turbine control servo. The models of the water penstock and the connected power system are static. These assumptions are not considered crucial. The system uses a Kalman filter for optimal estimation of the state variables and the parameters of the electric grid equivalent. The multivariable control law is computed from a Riccatti equation and is made adaptive to the generators running condition by means of a least square technique.

  20. Potential hydroelectric power Mora Canal Drop. Final report

    Energy Technology Data Exchange (ETDEWEB)

    Willer, D.C.

    1978-12-01

    The feasibility of installing a hydroelectric power plant on the Mora Canal Drop site in Idaho was studied. It was recommended that a 1900 kW unit be installed to generate 8,113,000 kWh per year. The project should cost approximately $1.8 million. The generating cost would be between 20.3 and 22.2 mills/kWh. A local utility has offered to buy all power produced at 26 mills/kWh. No adverse environment, safety, or socio-economic effects are foreseen. (LCL)

  1. Development of a 1 D hydrodynamic habitat model for the Hippopotamus amphibious as basis for sustainable exploitation of hydroelectric power

    Science.gov (United States)

    Manful, D. Y.; Kaule, G.; Wieprecht, S.; Rees, J.; Hu, W.

    2009-12-01

    Hydroelectric Power (HEP) is proving to be a good alternative to carbon based energy. In the past hydropower especially large scale hydro attracted significant criticism as a result of its impact on the environment. A new breed of hydroelectric dam is in the offing. The aim is to have as little a footprint as possible on the environment in both pre and post construction phases and thus minimize impact on biodiversity whilst producing clean renewable energy. The Bui dam is 400 MW scheme currently under development on the Black Volta River in the Bui national park in Ghana. The reservoir created by the Bui barrage is expected to impact (through inundation) the habitat of two species of hippos know to exist in the park, the Hippopotamus amphibius and the Choeropsis liberiensis. Computer-based models present a unique opportunity to assess quantitatively the impact of the new reservoir on the habitat of the target species in this case the H. amphibious. Until this undertaking, there were very few studies documenting the habitat of the H. amphibious let alone model it. The work and subsequent presentation will show the development of a habitat model for the Hippopotamus amphibius. The Habitat Information retrieval Program based on Streamflow Analysis, in short HIPStrA, is a one dimensional (1D) in-stream, spatially explicit hybrid construct that combines physico-chemical evidence and expert knowledge to forecast river habitat suitability (Hs) for the Hippopotamus amphibius. The version of the model presented is specifically developed to assess the impact of a reservoir created by a hydroelectric dam on potential dwelling areas in the Bui gorge for hippos. Accordingly, this version of HIPStrA simulates a special reservoir suitability index (Rsi), a metric that captures the”hippo friendliness” of any lake or reservoir. The impact of measured and simulated flood events as well as low flows, representing extreme events is also assessed. Recommendations are made for the

  2. Small-Scale Hydroelectric Power Demonstration Project. Pennsylvania Hydroelectric Development Corporation Flat Rock Dam: Project summary report

    Energy Technology Data Exchange (ETDEWEB)

    Gleeson, L.

    1991-12-01

    The US Department of Energy Field Office, Idaho, Small-Scale Hydroelectric Power Program was initiated in conjunction with the restoration of three power generating plants in Idaho Falls, Idaho, following damage caused by the Teton Dam failure on June 5, 1976. There were many parties interested in this project, including the state and environmental groups, with different concerns. This report was prepared by the developer and describes the design alternatives the applicant provided in an attempt to secure the Federal Energy Regulatory Commission license. Also included are correspondence between the related parties concerning the project, major design alternatives/project plan diagrams, the license, and energy and project economics.

  3. The hydrogen economy urgently needs environmentally sustainable hydroelectricity

    International Nuclear Information System (INIS)

    Only two sources of energy were said to have the capacity to bridge the transition to fully sustainable and renewable energy, namely natural gas and hydro. The argument was made that because of this advantage, both forms will have to be promoted fast, since the transition to sustainable energy is urgent. In so far as natural gas supplies are concerned, it was estimated that they will last for perhaps the next 50 years, whereas hydroelectric potential is practically unlimited. Developing nations could vastly accelerate their development, reduce poverty and approach sustainability by exporting hydro to industrial countries. Similarly, industrial nations switching from fossil fuels to hydrogen could move up the environmental ranking, and significantly help alleviating global pollution and climate risks. Environmental ranking of new energy sources, world reservoirs of hydroelectric power, environmental and social ranking of hydro sites, the environmental impacts of hydro projects, and the concept of environmental sustainability in hydro reservoirs, were summarized. Greater acceptance of the need for sustainable development by the hydro industry was urged, along with more care in selecting hydro development sites with sustainability as a prime objective. 23 refs., 6 figs

  4. Mercury accumulation in bats near hydroelectric reservoirs in Peninsular Malaysia.

    Science.gov (United States)

    Syaripuddin, Khairunnisa; Kumar, Anjali; Sing, Kong-Wah; Halim, Muhammad-Rasul Abdullah; Nursyereen, Muhammad-Nasir; Wilson, John-James

    2014-09-01

    In large man-made reservoirs such as those resulting from hydroelectric dam construction, bacteria transform the relatively harmless inorganic mercury naturally present in soil and the submerged plant matter into toxic methylmercury. Methylmercury then enters food webs and can accumulate in organisms at higher trophic levels. Bats feeding on insects emerging from aquatic systems can show accumulation of mercury consumed through their insect prey. In this study, we investigated whether the concentration of mercury in the fur of insectivorous bat species was significantly higher than that in the fur of frugivorous bat species, sampled near hydroelectric reservoirs in Peninsular Malaysia. Bats were sampled at Temenggor Lake and Kenyir Lake and fur samples from the most abundant genera of the two feeding guilds-insectivorous (Hipposideros and Rhinolophus) and frugivorous (Cynopterus and Megaerops) were collected for mercury analysis. We found significantly higher concentrations of total mercury in the fur of insectivorous bats. Mercury concentrations also differed significantly between insectivorous bats sampled at the two sites, with bats from Kenyir Lake, the younger reservoir, showing higher mercury concentrations, and between the insectivorous genera, with Hipposideros bats showing higher mercury concentrations. Ten bats (H. cf. larvatus) sampled at Kenyir Lake had mercury concentrations approaching or exceeding 10 mg/kg, which is the threshold at which detrimental effects occur in humans, bats and mice. PMID:24840106

  5. Are hydroelectric reservoirs significant sources of greenhouse gases

    International Nuclear Information System (INIS)

    Estimates suggest that, per unit of energy produced, greenhouse-gas flux to the atmosphere from some hydroelectric reservoirs may be significant compared to greenhouse-gas emission by fossil-fuelled electricity generation. Greenhouse gases (CO2 and CH4) are produced during bacterial decomposition of flooded peat and forest biomass. The amount emitted will be positively related to the area flooded. Early data from hydroelectric reservoirs in northern Canada support this hypothesis. Our hypothesis is based primarily on two of our past studies which show that both upland forests and peatlands are sites of intense microbial decomposition and greenhouse-gas production when they become covered with water. During the summer of 1992, the first preliminary data were obtained that support our hypothesis. At 12 sampling locations on the LaGrande II-BoydSakami Reservoir complex in northern Quebec, both the CO2 and CH4 were found to be evading to the atmosphere. CO2 concentrations were 2-3 times above atmospheric equilibrium at all sampling sites. This is in contrast to two large lakes, Nipigon and Superior, where CO2 was being absorbed from the atmosphere throughout the ice-free season. Surface CH4 concentrations were 0.05-1.1 μmol L-1 with most sites having concentrations higher than in natural, stratified Canadian shield lakes. Further measurements are required to determine annual fluxes. (19 refs., 3 figs., 2 tabs.)

  6. Benefits of fish passage and protection measures at hydroelectric projects

    International Nuclear Information System (INIS)

    The US Department of Energy's Hydropower Program is engaged in a multi-year study of the costs and benefits of environmental mitigation measures at nonfederal hydroelectric power plants. An initial report (Volume 1) reviewed and surveyed the status of mitigation methods for fish passage, instream flows, and water quality; this paper focuses on the fish passage/protection aspects of the study. Fish ladders were found to be the most common means of passing fish upstream; elevators/lifts were less common, but their use appears to be increasing. A variety of mitigative measures is employed to prevent fish from being drawn into turbine intakes, including spill flows, narrow-mesh intake screens, angled bar racks, and lightor sound-based guidance measures. Performance monitoring and detailed, quantifiable performance criteria were frequently lacking at non-federal hydroelectric projects. Volume 2 considers the benefits and costs of fish passage and protection measures, as illustrated by case studies for which performance monitoring has been conducted. The report estimates the effectiveness of particular measures, the consequent impacts on the fish populations that are being maintained or restored, and the resulting use and non-use values of the maintained or restored fish populations

  7. Hydro-Electric Facilities, (Municpality Name) Hydro-electric Facility, Published in 2005, 1:24000 (1in=2000ft) scale, Lafayette County Land Records.

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — This Hydro-Electric Facilities dataset, published at 1:24000 (1in=2000ft) scale, was produced all or in part from Field Observation information as of 2005. It is...

  8. Risks in the operation of hydroelectric power plants and nuclear power in Brazil

    International Nuclear Information System (INIS)

    A comparison between the utilization of electrical energy generated by hydroelectric power plant and nuclear power plant is made. The risks from nuclear installations and the environmental effects of hydroelectric power plants and nuclear power plants are presented. (E.G.)

  9. 78 FR 38027 - Wilkesboro Hydroelectric Company, LLC; Wilkesboro Hydropower, LLC; Notice of Application for...

    Science.gov (United States)

    2013-06-25

    ... Energy Regulatory Commission Wilkesboro Hydroelectric Company, LLC; Wilkesboro Hydropower, LLC; Notice of..., Wilkesboro Hydroelectric Company, LLC (transferor) and Wilkesboro Hydropower, LLC (transferee) filed an application for the transfer of license for the W. Kerr Scott Hydropower Project, FERC No. 12642, located...

  10. 78 FR 25263 - Eagle Mountain Pumped Storage Hydroelectric Project; Eagle Crest Energy; Notice of Meeting With...

    Science.gov (United States)

    2013-04-30

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Eagle Mountain Pumped Storage Hydroelectric Project; Eagle Crest Energy... Power Act), on the Eagle Mountain Pumped Storage Hydroelectric Project. e. All local, state, and...

  11. Status Review of Wildlife Mitigation at Columbia Basin Hydroelectric Projects, Oregon Facilities, Final Report.

    Energy Technology Data Exchange (ETDEWEB)

    Bedrossian, Karen L.

    1984-08-01

    The report presents a review and documentation of existing information on wildlife resources at Columbia River Basin hydroelectric facilities within Oregon. Effects of hydroelectric development and operation; existing agreements; and past, current and proposed wildlife mitigation, enhancement, and protection activities were considered. (ACR)

  12. Ecological impact from large constructions of hydroelectric power plants in Parana River, Brazil

    International Nuclear Information System (INIS)

    An analysis over environmental impacts on Parana River as a result of the hydroelectric power plants construction is presented. Hydroelectric dams, also including the planned ones, are showing during the explanation, and biologic aspects are discussed. 30 refs., 4 figs., 2 tabs

  13. What are the stakes of the hydroelectric power? Supplement: report on the renewable energies

    International Nuclear Information System (INIS)

    The document presents the regulation and the stakes concerning the hydroelectricity development in France: contribution to the greenhouse effect fight, the environment preservation, possible uses. It proposes then, a grid of a socio-economical evaluation of the projects. In this framework, the impacts of the little hydroelectric power and the possible corrective measures are described. (A.L.B.)

  14. Production capacity of equipment for medium and large hydroelectric power plant in China

    Energy Technology Data Exchange (ETDEWEB)

    Huang Shenyang [Ministry of Electric Power, Beijing (China). Bureau of Electric Power Machinery

    1995-07-01

    This document presents an overview on the production capacity of equipment for medium and large hydroelectric power plant in China. The document approaches general aspects, production capability and testing facilities related to Francis, Kaplan, tubular and impulse hydroelectric generating sets, and the introduction of main manufacturers as well.

  15. Proliferation of hydroelectric dams in the Andean Amazon and implications for Andes-Amazon connectivity.

    Directory of Open Access Journals (Sweden)

    Matt Finer

    Full Text Available Due to rising energy demands and abundant untapped potential, hydropower projects are rapidly increasing in the Neotropics. This is especially true in the wet and rugged Andean Amazon, where regional governments are prioritizing new hydroelectric dams as the centerpiece of long-term energy plans. However, the current planning for hydropower lacks adequate regional and basin-scale assessment of potential ecological impacts. This lack of strategic planning is particularly problematic given the intimate link between the Andes and Amazonian flood plain, together one of the most species rich zones on Earth. We examined the potential ecological impacts, in terms of river connectivity and forest loss, of the planned proliferation of hydroelectric dams across all Andean tributaries of the Amazon River. Considering data on the full portfolios of existing and planned dams, along with data on roads and transmission line systems, we developed a new conceptual framework to estimate the relative impacts of all planned dams. There are plans for 151 new dams greater than 2 MW over the next 20 years, more than a 300% increase. These dams would include five of the six major Andean tributaries of the Amazon. Our ecological impact analysis classified 47% of the potential new dams as high impact and just 19% as low impact. Sixty percent of the dams would cause the first major break in connectivity between protected Andean headwaters and the lowland Amazon. More than 80% would drive deforestation due to new roads, transmission lines, or inundation. We conclude with a discussion of three major policy implications of these findings. 1 There is a critical need for further strategic regional and basin scale evaluation of dams. 2 There is an urgent need for a strategic plan to maintain Andes-Amazon connectivity. 3 Reconsideration of hydropower as a low-impact energy source in the Neotropics.

  16. Underground Pumped Storage Hydroelectricity using Abandoned Works (open pits and deep mines)

    Science.gov (United States)

    Pujades, E.; Willems, T.; Bodeux, S.; Orban, P.; Dassargues, A.

    2015-12-01

    Pumped Storage Hydroelectricity (PSH) is a good alternative to increase the efficiency of power plants, which cannot regulate the amount of electricity generated according to the demand (wind, solar or even nuclear power plants). PSH plants, which consist in two reservoirs located at different heights (upper and lower), can store energy during low demand periods (pumping water from the lower to the upper reservoir) and generate electricity during the high demand peaks (falling water from the upper to the lower reservoir). Given that the two reservoirs must be located at different heights, PSH plants cannot be constructed in flat regions. Nevertheless, in these regions, an alternative could be to use abandoned underground works (open pits or deep mines) as lower reservoirs to construct Underground Pumped Storage Hydroelectricity (UPSH) plants. To select the best place to construct a plant, two considerations must be taken into account regarding the interaction between UPSH plants and groundwater: 1) the alteration of the natural conditions of aquifers and 2), the efficiency of the plant since the electricity generated depends on the hydraulic head inside the underground reservoir. Obviously, a detailed numerical model must be necessary before to select a location. However, a screening methodology to reject the most disadvantageous sites in a short period of time would be useful. Groundwater flow impacts caused by UPSH plants are analyzed numerically and the main variables involved in the groundwater evolution are identified. The most noticeable effect consists in an oscillation of the groundwater. The hydraulic head around which groundwater oscillates, the magnitude of the oscillations and the time to achieve a "dynamic steady state" depend on the boundaries, the parameters of the aquifer and the characteristics of the underground reservoir. A screening methodology is proposed to assess the main impacts caused in aquifers by UPSH plants. Finally, the efficiency

  17. Proliferation of Hydroelectric Dams in the Andean Amazon and Implications for Andes-Amazon Connectivity

    Science.gov (United States)

    Finer, Matt; Jenkins, Clinton N.

    2012-01-01

    Due to rising energy demands and abundant untapped potential, hydropower projects are rapidly increasing in the Neotropics. This is especially true in the wet and rugged Andean Amazon, where regional governments are prioritizing new hydroelectric dams as the centerpiece of long-term energy plans. However, the current planning for hydropower lacks adequate regional and basin-scale assessment of potential ecological impacts. This lack of strategic planning is particularly problematic given the intimate link between the Andes and Amazonian flood plain, together one of the most species rich zones on Earth. We examined the potential ecological impacts, in terms of river connectivity and forest loss, of the planned proliferation of hydroelectric dams across all Andean tributaries of the Amazon River. Considering data on the full portfolios of existing and planned dams, along with data on roads and transmission line systems, we developed a new conceptual framework to estimate the relative impacts of all planned dams. There are plans for 151 new dams greater than 2 MW over the next 20 years, more than a 300% increase. These dams would include five of the six major Andean tributaries of the Amazon. Our ecological impact analysis classified 47% of the potential new dams as high impact and just 19% as low impact. Sixty percent of the dams would cause the first major break in connectivity between protected Andean headwaters and the lowland Amazon. More than 80% would drive deforestation due to new roads, transmission lines, or inundation. We conclude with a discussion of three major policy implications of these findings. 1) There is a critical need for further strategic regional and basin scale evaluation of dams. 2) There is an urgent need for a strategic plan to maintain Andes-Amazon connectivity. 3) Reconsideration of hydropower as a low-impact energy source in the Neotropics. PMID:22529979

  18. Share of hydro-electric power in the world energy balance

    Energy Technology Data Exchange (ETDEWEB)

    Cotillon, J. (Electricite de France, 75 - Paris)

    1982-01-01

    The following are discussed: the consequences of the differing nature of renewable and non-renewable energy sources, the outlook for hydro-electric power generation by the years 2000 and 2050, whether the distance to sites is a handicap, whether the development of micro-stations is difficult, pumping vis-a-vis conventional hydro-electric facilities, the scale of equipment and the main channels for the transmission of water power. The trend of energy, electricity and hydro-electric power since the beginning of the century are compared: four times more capacity than that of the hydro-electric developments built to date must be harnessed. In addition, the share of hydroelectric in electricity generation in 1971 is the same as the planned share of nuclear power generation in 1990.

  19. Environmental consequences of hydroelectric development: the role of facility size and type

    International Nuclear Information System (INIS)

    The development of hydroelectric power throughout the world is receiving renewed attention as the economic, political, and environmental costs of conventional energy production rise. There is currently a perception that hydroelectricity has environmental and economic advantages over electricity produced by conventional energy technologies, but there is a paucity of information about the environmental impacts of hydroelectric facilities as a function of size and type. We characterize the environmental impacts of hydroelectric developments and quantify these impacts as a function of the size and type of project. Several unexpected conclusions arise from our analysis. For most hydroelectric facilities, size, as measured by installed capacity, is not necessarily a good indicator or the severity of environmental costs. For impacts such as land flooded and evaporative water lost, smaller facilities cause greater environmental disruptions per unit of energy produced than do larger facilities. (Author)

  20. Further tests of changes in fish escape behavior resulting from sublethal stresses associated with hydroelectric turbine passage

    Energy Technology Data Exchange (ETDEWEB)

    Ryon, Michael G. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Cada, Glenn F. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Smith, John G. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

    2004-04-01

    Fish that pass through a hydroelectric turbine may not be killed directly, but may nonetheless experience sublethal stresses that will increase their susceptibility to predators (indirect mortality). There is a need to develop reliable tests for indirect mortality so that the full consequences of passage through turbines (and other routes around a hydroelectric dam) can be assessed. The most commonly used laboratory technique for assessing susceptibility to predation is the predator preference test. This report evaluates the field application of a new technique that may be valuable for assessing indirect mortality, based on changes in a behavioral response to a startling stimulus (akin to perceiving an approaching predator). The study compared the behaviors of 70 fish passed through the turbine and another 70 under control conditions (either transferred from the holding tank or injected into the Alden loop downstream of turbine). The resulting image files were analyzed for a variety of behavioral measures including: presence of a startle response, time to first reaction, duration of reaction, time to formation of the maximum C-shape, time to completion of the C-shape, completeness of the C-shape, direction of turn, and degree of turn. The data were evaluated for statistical significance and patterns of response were identified.

  1. Will initiatives to promote hydroelectricity consumption be effective? Evidence from univariate and panel LM unit root tests with structural breaks

    OpenAIRE

    Hooi Hooi Lean; Russell Smyth

    2013-01-01

    This paper examines whether initiatives to promote hydroelectricity consumption are likely to be effective by applying univariate and panel Lagrange Multiplier (LM) unit root tests to hydroelectricity consumption in 55 countries over the period 1965 to 2011. We find that for the panel, as well as about four-fifths of individual countries, that hydroelectricity consumption is stationary. This result implies that shocks to hydroelectricity consumption in most countries will only result in tempo...

  2. Benefits and applications of modular hydroelectric pumped storage

    International Nuclear Information System (INIS)

    This paper reports on hydroelectric pumped storage which is the only proven and most efficient technology available for energy storage. It is used by utilities to provide peak and intermediate power and to optimize overall system performance. Because of increased environmental and regulatory constraints, few acceptable sites, long schedules, and huge financial commitments, large conventional pumped storage plants, are now virtually impossible to build. As an alternative, small modular pumped storage, with project sizes ranging from 25 MW to 200 MW, was created to overcome the difficulties of conventional projects. The modular approach involves standardizing the elements of a pumped storage plant by utilizing specialized siting techniques and optimizing design, equipment, and construction. Compared with conventional pumped storage, the modular design can reduce cost and expedite schedule; reduce environmental concerns and permitting obstacles; and expand applications of energy storage on a utility's system

  3. Optimal control of hydroelectric facility incorporating pump storage

    International Nuclear Information System (INIS)

    We consider a simple model of a pump-assisted hydroelectric facility operating in a market with time-varying but deterministic power prices and constant water inflows. The engineering details of the facility are described by a model containing several parameters. We present an algorithm for optimizing first the energy and then the profit produced by these plants. This algorithm allows us to describe the relationships between control trajectory and time, and between inflow and price. Remarkably, we see that under some reasonable choices of facility parameters and for power prices that are not extremely variable, the optimal profit operation of these facilities is not too different from their optimal energy operation, and the control is less affected by the price as the inflow rate increases. (author)

  4. Greenhouse gas emissions from Brazil’s Amazonian hydroelectric dams

    Science.gov (United States)

    Fearnside, Philip M.

    2016-01-01

    Tropical dams are often falsely portrayed as ‘clean’ emissions-free energy sources. The letter by de Faria et al (2015 Environ. Res. Lett. 10 124019) adds to evidence questioning this myth. Calculations are made for 18 dams that are planned or under construction in Brazilian Amazonia and show that emissions from storage hydroelectric dams would exceed those from electricity generation based on fossil fuels. Fossil fuels need not be the alternative, because Brazil has vast potential for wind and solar power as well as opportunities for energy conservation. Because dam-building is rapidly shifting to humid tropical areas, where emissions are higher than in other climatic zones, the impact of these emissions needs to be given proper weight in energy-policy decisions.

  5. Hydrogen-based industry from remote excess hydroelectricity

    International Nuclear Information System (INIS)

    This paper examines synergies, opportunities and barriers associated with hydrogen and excess hydro-electricity in remote areas. The work is based on a case study that examined the techno-economic feasibility of a new hydrogen-based industry using surplus/off-peak generating capacity of the Taltson Dam and Generating Station in the Northwest Territories, Canada. After evaluating the amount and cost of hydrogen that could be produced from the excess capacity, the study investigates three hydrogen utilization scenarios: (1) merchant liquid or compressed hydrogen, (2) hydrogen as a chemical feedstock for the production of hydrogen peroxide, (3) methanol production from biomass, oxygen and hydrogen. Hydrogen peroxide production is the most promising and attractive strategy in the Fort Smith context. The study also illustrates patterns that recur in isolated sites throughout the world. (Author)

  6. Study of the Time Response of a Simulated Hydroelectric System

    Science.gov (United States)

    Simani, S.; Alvisi, S.; Venturini, M.

    2014-12-01

    This paper addresses the design of an advanced control strategy for a typical hydroelectric dynamic process, performed in the Matlab and Simulink environments. The hydraulic system consists of a high water head and a long penstock with upstream and downstream surge tanks, and is equipped with a Francis turbine. The nonlinear characteristics of hydraulic turbine and the inelastic water hammer effects were considered to calculate and simulate the hydraulic transients. With reference to the control solution, the proposed methodology relies on an adaptive control designed by means of the on-line identification of the system model under monitoring. Extensive simulations and comparison with respect to a classic hydraulic turbine speed PID regulator show the effectiveness of the proposed modelling and control tools.

  7. Study of the Time Response of a Simulated Hydroelectric System

    International Nuclear Information System (INIS)

    This paper addresses the design of an advanced control strategy for a typical hydroelectric dynamic process, performed in the Matlab and Simulink environments. The hydraulic system consists of a high water head and a long penstock with upstream and downstream surge tanks, and is equipped with a Francis turbine. The nonlinear characteristics of hydraulic turbine and the inelastic water hammer effects were considered to calculate and simulate the hydraulic transients. With reference to the control solution, the proposed methodology relies on an adaptive control designed by means of the on-line identification of the system model under monitoring. Extensive simulations and comparison with respect to a classic hydraulic turbine speed PID regulator show the effectiveness of the proposed modelling and control tools

  8. RECOVERY OF AN OXISOL DEGRADED BY THE CONSTRUCTION OF A HYDROELECTRIC POWER PLANT

    Directory of Open Access Journals (Sweden)

    Joseane Carina Borges de Carvalho

    2015-12-01

    Full Text Available ABSTRACT The removal of thick layers of soil under native scrubland (Cerrado on the right bank of the Paraná River in Selvíria (State of Mato Grosso do Sul, Brazil for construction of the Ilha Solteira Hydroelectric Power Plant caused environmental damage, affecting the revegetation process of the stripped soil. Over the years, various kinds of land use and management systems have been tried, and the aim of this study was to assess the effects of these attempts to restore the structural quality of the soil. The experiment was conducted considering five treatments and thirty replications. The following treatments were applied: stripped soil without anthropic intervention and total absence of plant cover; stripped soil treated with sewage sludge and planted to eucalyptus and grass a year ago; stripped soil developing natural secondary vegetation (capoeira since 1969; pastureland since 1978, replacing the native vegetation; and soil under native vegetation (Cerrado. In the 0.00-0.20 m layer, the soil was chemically characterized for each experimental treatment. A 30-point sampling grid was used to assess soil porosity and bulk density, and to assess aggregate stability in terms of mean weight diameter (MWD and geometric mean diameter (GMD. Aggregate stability was also determined using simulated rainfall. The results show that using sewage sludge incorporated with a rotary hoe improved the chemical fertility of the soil and produced more uniform soil pore size distribution. Leaving the land to develop secondary vegetation or turning it over to pastureland produced an intermediate level of structural soil quality, and these two treatments produced similar results. Stripped soil without anthropic intervention was of the lowest quality, with the lowest values for cation exchange capacity (CEC and macroporosity, as well as the highest values of soil bulk density and percentage of aggregates with diameter size <0.50 mm, corroborated by its lower

  9. Woodruff Narrows low head hydroelectric power plant feasibility determination

    Energy Technology Data Exchange (ETDEWEB)

    1979-03-01

    Woodruff Narrows Reservoir, owned by the State of Utah, was built in 1961 as an irrigation reservoir. The reservoir outlet works and spillway are in need of repair, and plans have been made to enlarge the reservoir from its present capacity of 28,000 acre-feet to 53,200 acre-feet when these repairs are made. The purpose of this study was to determine if it is feasible to add hydropower facilities when the reservoir is repaired and enlarged. A computer simulation model based on mean monthly values, utilizing 26 years of recorded streamflow into the reservoir, was used to determine the mean annual energy potential for the following configurations: (1) present dam, (2) the proposed enlarged dam, (3) a new dam at the lower site with a maximum head of 65 feet, and (4) a new dam at the lower site which would store water to the same elevation as the proposed enlarged dam. Results of the simulation study show that maximum power capacities are respectively 2.1, 3.0, 3.9, and 4.5 megawatts. The marketing potential for this electric power, cost estimates and financial analysis, and environmental, social, and regulatory aspects of the proposed hydropower facilities were evaluated. The results showed the addition of hydroelectric power development at the Woodruff Narrows site would have minimal social and environmental effects on the area, would result in little or no changes in the present patterns of water and land use, income, population, and employment and would not result in any significant changes of the social structure or characteristics of the area. However, hydroelectric power development at the Woodruff Narrows site is not economically feasible at the present time. (LCL)

  10. The hydroelectric power market in the United States

    International Nuclear Information System (INIS)

    The second-largest producer of hydroelectric power in the world is the United States, right after Canada. In the United States, 7.1 per cent of net electricity generation was attributed to hydroelectric power in 2000, which totalled 269 terawatt hours (TWh). Aging facilities, outdated technology in some facilities, a cumbersome licensing process, and increasing environmental demands from interest groups for the preservation of river systems and surrounding wildlife challenge the industry. Pacific Coast states, especially California, were faced with electric power shortages during the summer of 2001, due to low market prices, high power usage among consumers and drought. The problems with the deregulation of the electricity market were brought to light by these shortages. Legislation to restructure the electric power industry in 25 states had not been enacted as of January 2002. The purchase of more power from both Canada and the Mexico is being considered by the government of the United States, as is the creation of a national power grid to allow for power transmission throughout the country. The Canada-United States energy trade might be affected by such a move, and result in project construction opportunities for Canadian companies. Renewable energy sources must be responsible for the generation of 10 per cent of power generation levels by 2020, on a gradual basis as mandated by law. By 2005, New York City must purchase 10 per cent of its power from renewable energy sources, reaching 20 per cent by 2010. The repair and replacement of aging dam equipment, the development of advanced turbine technology to protect fish stocks and water quality, dam removal, the construction of power lines are all opportunities open to Canadian companies. 60 refs., 5 tabs

  11. Analysis of Environmental Issues Related to Small-Scale Hydroelectric Development V: Instream Flow Needs for Fishery Resources

    Energy Technology Data Exchange (ETDEWEB)

    Loar, James M. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Sale, Michael J. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

    1981-10-01

    The purpose of this document is to provide guidance to developers of small-scale hydroelectric projects on the assessment of instream flow needs. While numerous methods have been developed to assess the effects of stream flow regulation on aquatic biota in coldwater streams in the West, no consensus has been reached regarding their general applicability, especially to streams in the eastern United States. This report presents and reviews these methods (Section 2.0), which is intended to provide the reader with general background information that is the basis for the critical evaluation of the methods (Section 3.0). The strategy for instream flow assessment presented in Section 4.0 is, in turn, based on the implicit assumptions, data needs, costs, and decision-making capabilities of the various methods as discussed in Section 3.0.

  12. Mathematical modeling of vibrations in turbogenerator sets of Sayano-Shushenskaya Hydroelectric Power Station

    Science.gov (United States)

    Leonov, G. A.; Kuznetsov, N. V.; Solovyeva, E. P.

    2016-02-01

    Oscillations in turbogenerator sets, which consist of a synchronous generator, a hydraulic turbine, and an automatic speed regulator, are investigated. This study was motivated by the emergency that took place at the Sayano-Shushenskaya Hydroelectric Power Station in 2009. During modeling of the parameters of turbogenerator sets of the Sayano-Shushenskaya Hydroelectric Power Station, the ranges corresponding to undesired oscillation regimes were determined. These ranges agree with the results of the full-scale tests of the hydropower units of the Sayano-Shushenskaya Hydroelectric Power Station performed in 1988.

  13. Final Technical Report - Modernization of the Boulder Canyon Hydroelectric Project

    Energy Technology Data Exchange (ETDEWEB)

    Joe Taddeucci, P E

    2013-03-29

    The Boulder Canyon Hydroelectric Project (BCH) was purchased by the City of Boulder, CO (the city) in 2001. Project facilities were originally constructed in 1910 and upgraded in the 1930s and 1940s. By 2009, the two 10 MW turbine/generators had reached or were nearing the end of their useful lives. One generator had grounded out and was beyond repair, reducing plant capacity to 10 MW. The remaining 10 MW unit was expected to fail at any time. When the BCH power plant was originally constructed, a sizeable water supply was available for the sole purpose of hydroelectric power generation. Between 1950 and 2001, that water supply had gradually been converted to municipal water supply by the city. By 2001, the water available for hydroelectric power generation at BCH could not support even one 10 MW unit. Boulder lacked the financial resources to modernize the facilities, and Boulder anticipated that when the single, operational historical unit failed, the project would cease operation. In 2009, the City of Boulder applied for and received a U.S. Department of Energy (DOE) grant for $1.18 million toward a total estimated project cost of $5.155 million to modernize BCH. The federal funding allowed Boulder to move forward with plant modifications that would ensure BCH would continue operation. Federal funding was made available through the American Recovery and Reinvestment Act (ARRA) of 2009. Boulder determined that a single 5 MW turbine/generator would be the most appropriate capacity, given the reduced water supply to the plant. Average annual BCH generation with the old 10 MW unit had been about 8,500 MW-hr, whereas annual generation with a new, efficient turbine could average 11,000 to 12,000 MW-hr. The incremental change in annual generation represents a 30% increase in generation over pre-project conditions. The old turbine/generator was a single nozzle Pelton turbine with a 5-to-1 flow turndown and a maximum turbine/generator efficiency of 82%. The new unit is a

  14. Probabilistic streamflow forecasting for hydroelectricity production: A comparison of two non-parametric system identification algorithms

    Science.gov (United States)

    Pande, Saket; Sharma, Ashish

    2014-05-01

    This study is motivated by the need to robustly specify, identify, and forecast runoff generation processes for hydroelectricity production. It atleast requires the identification of significant predictors of runoff generation and the influence of each such significant predictor on runoff response. To this end, we compare two non-parametric algorithms of predictor subset selection. One is based on information theory that assesses predictor significance (and hence selection) based on Partial Information (PI) rationale of Sharma and Mehrotra (2014). The other algorithm is based on a frequentist approach that uses bounds on probability of error concept of Pande (2005), assesses all possible predictor subsets on-the-go and converges to a predictor subset in an computationally efficient manner. Both the algorithms approximate the underlying system by locally constant functions and select predictor subsets corresponding to these functions. The performance of the two algorithms is compared on a set of synthetic case studies as well as a real world case study of inflow forecasting. References: Sharma, A., and R. Mehrotra (2014), An information theoretic alternative to model a natural system using observational information alone, Water Resources Research, 49, doi:10.1002/2013WR013845. Pande, S. (2005), Generalized local learning in water resource management, PhD dissertation, Utah State University, UT-USA, 148p.

  15. An application of extreme value theory to the management of a hydroelectric dam.

    Science.gov (United States)

    Minkah, Richard

    2016-01-01

    Assessing the probability of very low or high water levels is an important issue in the management of hydroelectric dams. In the case of the Akosombo dam, very low and high water levels result in load shedding of electrical power and flooding in communities downstream respectively. In this paper, we use extreme value theory to estimate the probability and return period of very low water levels that can result in load shedding or a complete shutdown of the dam's operations. In addition, we assess the probability and return period of high water levels near the height of the dam and beyond. This provides a framework for a possible extension of the dam to sustain the generation of electrical power and reduce the frequency of spillage that causes flooding in communities downstream. The results show that an extension of the dam can reduce the probability and prolong the return period of a flood. In addition, we found a negligible probability of a complete shutdown of the dam due to inadequate water level. PMID:26848436

  16. Hazards due to the operation of hydroelectric and nuclear power plants in Brazil

    International Nuclear Information System (INIS)

    This work is concerned to hazards in the operation of hydroelectric as well as nuclear power plants, in Brazil. It takes into consideration factors regarding safety, cost benefit analysis and also public acceptance. (A.C.A.S.)

  17. Legal obstacles and incentives to the development of small scale hydroelectric power in Kentucky

    Energy Technology Data Exchange (ETDEWEB)

    None,

    1980-05-01

    The legal and institutional obstacles to the development of small-scale hydroelectric energy at the state level are examined. The introductory section examines the dual regulatory system from the standpoint of the appropriate legal doctrine, the law of pre-emption, application of the law to the case of hydroelectric development, and concludes with an inquiry into the practical use of the doctrine by the FERC. Additional sections cover acquisition; liability; Department for Natural Resources and Environmental Protection; energy utilities; local regulations; incidental impacts; financial considerations; and sources of information. In Kentucky, many of the impacts have not been implemented with regard to small-scale hydroelectric energy, since in Kentucky most electricity is coal-generated and any hydroelectric power that does exist, is derived from TVA or the Army Corp of Engineer projects.

  18. Determination of transit time in the hydraulic system of the San Gaban II hydroelectric plant

    International Nuclear Information System (INIS)

    This work determines the hydraulic behavior of waters from different lakes (Pauchinta, Parinajota and Suytococha) which feed the San Gaban II Hydroelectric Plant across the Corani and Macusani rivers through the transit time to the headwater dam

  19. Raptor observations associated with Terror Lake Hydroelectric Project: 1983 annual progress report

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — The report discusses the modification to both bald eagles and rough-legged hawk nesting behavior seen in the Terror Lake Hydroelectric Project area during 1983. A...

  20. Raptor observations associated with Terror Lake hydroelectric project: 1984 annual progress report

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — Raptors in the vicinity of the Terror Lake Hydroelectric Project (TLHP) were studied to determine the effects of project construction and operation on nesting and...

  1. Small scale hydroelectric power potential in Nevada: a preliminary reconnaissance survey

    Energy Technology Data Exchange (ETDEWEB)

    Cochran, G.F.; Fordham, J.W.; Richard, K.; Loux, R.

    1981-04-01

    This preliminary reconnaissance survey is intended to: develop a first estimate as to the potential number, location and characteristics of small-scale (50 kW to 15 MW) hydroelectric sites in Nevada; provide a compilation of various Federal and state laws and regulations, including tax and financing regulations, that affect small-scale hydroelectric development and provide information on sources of small-scale hydroelectric generation hardware and consultants/ contractors who do small scale hydroelectric work. The entire survey has been conducted in the office working with various available data bases. The site survey and site evaluation methods used are described, and data are tabulated on the flow, power potential, predicted capital expenditures required, etc. for 61 potential sites with measured flows and for 77 sites with derived flows. A map showing potential site locations is included. (LCL)

  2. A parallel between the impacts of hydroelectric and thermoelectric power plants

    International Nuclear Information System (INIS)

    An evaluation of the environmental impacts of hydroelectric and thermoelectric power plants using the Leopold method is presented. The evaluation includes impacts on the physical, biological and socio-economic sectors. 8 refs., 3 figs., 2 tabs

  3. 76 FR 18747 - Teton Power Funding, LLC; Topsham Hydro Partners Limited Partnership; Topsham Hydroelectric...

    Science.gov (United States)

    2011-04-05

    ... Energy Regulatory Commission Teton Power Funding, LLC; Topsham Hydro Partners Limited Partnership... Power Funding, LLC (transferor), Topsham Hydro Partners Limited Partnership, Topsham Hydroelectric... River in Sagadahoc, Cumberland, and Androscoggin counties, Maine. Applicants seek Commission approval...

  4. Caxingo - a promising model for integrating the hydroelectric work camps to the site communities

    International Nuclear Information System (INIS)

    The social and economical impacts caused by the hydroelectric work camps in the sites where the hydroelectric will be constructed are studied, analysing the great supply of works when the hydroelectric is been constructed face to the reduction one when the works are concluded; the neglect by the State in providing medical and educational assistances to the neighbour populations; the appearance of a commerce in the neighbour areas; the employer stableness in the camp after the pension and the lack by the neighbour cities of a social and economical substructure to offer to the population, that come with the hydroelectric construction. A new solution for these problems is presented in the Xingo camp, where the camp will be as a district of city near to the work, with community services provide by the State and the needful substructure to its construction and the equipment provide by the concessionaire. (C.G.C.). 1 fig

  5. Modernization technologies for existing hydroelectric stations; Kisetsu suiryoku hatsudensho no kindaika gijutsu

    Energy Technology Data Exchange (ETDEWEB)

    Okuno, T.; Araki, Y.; Iijima, M. [Fuji Electric Co. Ltd., Tokyo (Japan)

    1996-02-10

    Because of the long history of hydroelectric equipment in Japan, renewal of a large number of existing over-aged equipment is in progress. While changes in environment surrounding hydroelectric equipment and recent technological development have diversified requirements for repair and renewal of hydroelectric equipment and technologies to meet them. This paper presents the recent technological trend and the typical examples of modernization technologies for such over-aged equipment. The water supply equipment of hydroelectric power stations is damaged frequently and takes much time in maintenance. Waterless technologies requiring no water supply equipment were thus established such as air cooling of hydraulic turbine bearings and ceramic water seal equipment. On oilless (greaseless) technology, newly developed water lubrication bearings and electric servo motors are in use for guide vane operation. On generator, shaft seal equipment using magnetic fluid and improved air ducts sucking no outside air for preventing insulation resistance from reduction are in use. 6 figs., 2 tabs.

  6. Hydroacoustic modelling and numerical simulation of unsteady operation of hydroelectric systems

    OpenAIRE

    Nicolet, Christophe

    2007-01-01

    Hydropower represented in 1999 19% of the world electricity production and the absolute production is expected to grow considerably during the next 30 years. Francis turbines play a major role in the hydroelectric production due to their extended range of application. Due to the deregulated energy market, hydroelectric power plants are increasingly subjecting to off design operation, start-up and shutdown and new control strategies. Consequently, the operation of Francis turbine power plants ...

  7. Hydroacoustic modelling and numerical simulation of unsteady operation of hydroelectric systems

    OpenAIRE

    Nicolet, Christophe; Avellan, François; SIMOND, Jean-Jacques

    2008-01-01

    Hydropower represented in 1999 19% of the world electricity production and the absolute production is expected to grow considerably during the next 30 years. Francis turbines play a major role in the hydroelectric production due to their extended range of application. Due to the deregulated energy market, hydroelectric power plants are increasingly subjecting to off design operation, start-up and shutdown and new control strategies. Consequently, the operation of Francis turbine power plants ...

  8. Hydroelectric power optimization using a decomposition procedure for the indefinite quadratic form

    OpenAIRE

    Campeau, Benjamin R Jr.

    1993-01-01

    The optimization of hydroelectric power is one area of water resources management where the implementation of supply management techniques could yield enormous social welfare benefits. A broad spectrum of computer modeling and analysis techniques have been applied to the hydroelectric power production model in an attempt to improve the real-time operation of reservoir systems. The nonconvex, nonseparable hydropower objective function poses a formidable task in devising a global optimizatio...

  9. Numerical tools for the optimization of hydroelectric power stations in cascade

    OpenAIRE

    Erpicum, Sébastien; Archambeau, Pierre; Dewals, Benjamin; Detrembleur, Sylvain; Pirotton, Michel

    2005-01-01

    The numerical optimization process of the system of hydroelectric power stations installed on a 60 km long section of the rivers Amblève and Warche in Belgium is presented in detail. The river network is modelled in quasi-2D using real natural topographic data on almost 1,100 finite volumes. In a first step, the hydrological balance is closed using a numerical solver and roughness coefficients are calibrated from water level and discharge field measurements. Secondly, the hydroelectric produc...

  10. Viewpoint – Fifty Years of Hydroelectric Development in Chile: A History of Unlearned Lessons

    OpenAIRE

    Michael Nelson

    2013-01-01

    The development of hydroelectricity in Chile illustrates a situation where water resources can be both well and badly managed when a private or public utility company, in this case ENDESA, is powerful enough to operate largely outside standard policy and bureaucratic processes. It successfully increased hydroelectric capacity more than fourfold over three decades characterised by periods of significant political instability. This was done without noticeable conflict due to its recognised effi...

  11. Hydroelectricity and ecological considerations. Falsification of the environmental reality by the opponents of hydropower

    OpenAIRE

    Andrzej Giziński

    2013-01-01

    Opponents of hydroelectricity claim falsely that hydrotechnical development of the Lower Vistula River constitutes implementation of Edward Gierek’s concept of bringing only environmental damage1. Statements on the negative environmental impact of constructing small hydroelectric power stations (SHPS) are equally groundless. Permanent protests against the construction of dams and river damming, regardless of the motivations and will of protesters, increase energy dependence on Russia, and pre...

  12. Fifty years of hydroelectric development in Chile: A history of unlearned lessons

    OpenAIRE

    Michael Nelson

    2013-01-01

    The development of hydroelectricity in Chile illustrates a situation where water resources can be both well and badly managed when a private or public utility company, in this case ENDESA, is powerful enough to operate largely outside standard policy and bureaucratic processes. It successfully increased hydroelectric capacity more than fourfold over three decades characterised by periods of significant political instability. This was done without noticeable conflict due to its recognised effi...

  13. Variability in methane ebullition in several tropical hydroelectric reservoirs

    Science.gov (United States)

    Aurelio dos Santos, Marco; Pinguelli Rosa, Luiz; Matvienko, Bohdan; Oliveira dos Santos, Ednaldo; Sikar, Elizabeth; Manoel Portilho Bentes Junior, Ayr

    2013-04-01

    Research on ebullition from natural water bodies has been performed since the 1970s but in the case of hydropower reservoirs studies are more recent. Ebullition of methane was measured in eight hydroelectric reservoirs operated by Furnas Centrais Elétricas in tropical regions of Brazil. In a wide range of age, size, and shape, seven reservoirs are located in central and southeastern Brazil in a biome known as Cerrado and another one is located in an highly industrialized region in the Atlantic forest region. Samples were taken during three climatic seasons in each reservoir: at the beginning of the rainy season (November), at the end of the rainy season (March-April), and during the dry season (July-August). Bubbling emissions gas exchanges at the water-air interface were determined in reservoir surface considering distinct sites. The ebullitive emissions were determined using 0.75 m2 funnels placed 30 cm below the surface in several places in the reservoirs in depths varying from 5 to 20 m. Funnels were deployed at each sampling station for 24 hours. Emissions were interpolated to the whole reservoir by weighting for reservoir morphometry.

  14. Hydroelectric power and global environmental problems: benefits and environmental impacts

    International Nuclear Information System (INIS)

    The risk of global warming is one of the most serious global environmental problems. It is due to the increase of greenhouse gases emissions, mainly because of the use of fossil fuels in the energy sector, particularly for electricity generation. At an international level, experts now agree that measures are to be taken to reduce this risk. In the energy sector, an improvement of energy efficiency and an increase of nuclear electricity generation are often presented as the best available solutions. Renewable energy sources are often presented as a solution with a negligible potential impact, and sometimes, hydro power is even forgotten, or its coasts and its potential impacts on local environment are presented as an obstacle to its positive contribution to the reduction of global warming risk. Without denying the positive impacts of other solutions, this paper explains the possibilities and the benefits of an increased use of hydroelectric power, when implemented with a minimum impact on local environment and with a synergistic effect with the rational use of generated energy, in order to have access to a sustainable development. 19 refs., 6 figs

  15. The Manitoba Hydro-Electric Board 50. annual report

    International Nuclear Information System (INIS)

    This document presents the financial statements for The Manitoba Hydro-Electric Board (Manitoba Hydro) for the fiscal year ended March 31, 2001. Manitoba Hydro was proud to report no electricity rate increase for the period 2000-2001, a feat realized for the fifth consecutive year for most customer groups. Financial and production highlights were first presented, followed by the vision mission and goals of Manitoba Hydro. Manitoba Hydro serves 403 000 customers in the province with electric energy, and 248 000 customers with natural gas service mainly in the south of the province. Electricity export sale agreements are in place with more than 35 utilities and marketers in the United States, Ontario and Saskatchewan. Self-renewing waterpower is used to generate the bulk of the electricity. The transmission and distribution lines stretch over 100 000 kilometres. Manitoba Hydro is the fourth largest energy utility in Canada based on capital assets. A review of the year was presented, as well as a brief historical overview of Manitoba Hydro. The financial review section discussed the management report, the Auditor's report. Included in this section were various statement sheets, namely the consolidated statement of income and retained earnings, consolidated balance sheet, consolidated statement of cash flows, followed by some notes to the consolidated financial statements. Consolidated financial statistics and operating statistics - 10-year overview were presented. A brief presentation of the Board members and senior officers ended this report. tabs. figs

  16. Joint Venture Modes of Water Conservancy and Hydroelectric Engineering

    Directory of Open Access Journals (Sweden)

    Zhiding Chen

    2013-07-01

    Full Text Available With the long construction period, the giant scope and complex technology, water conservancy and hydroelectric engineering construction has large investment. In the fully competitive water conservancy and hydropower project construction contracting market, it is almost impossible for a company to contract with a water conservancy and hydropower project independently. Therefore, water conservancy and hydropower project construction can be contracted by several construction companies together, to play each company's strengths, lower offer, improve project quality, shorten the construction period and win the competition. In this paper, we started from the definition of Joint Venture, summed up the forms of Joint Venture in water conservancy and hydropower engineering, proposed that the JV modes can be divided into domestic and international union, tight mode, half-tight mode, loose mode, incorporation and consortium. Furthermore, we analyzed the advantages and disadvantages of Joint Venture. Put forward that the JV can relieve the owner from interfacial administrative work, reduce risk of engineering, and raise the success rate of engineering contract, improve the correctness of price and increase the opportunity of project contracting, Learn from other members, enhance technology and management and make full use of idle resources

  17. Have Norwegian producers of hydroelectric power wasted the water?

    International Nuclear Information System (INIS)

    Norwegian producers of hydroelectric power have been criticized for having exported power to Sweden during the autumn and winter 2003/2004. As this analysis shows, although the reservoir level in Norway was below normal in October already, the negative deviation from the normal reservoir level was even greater in Sweden till the end of the year. Also when the magnitude of the reserve is measured relative to the number of weeks with normal winter production for which it lasts, the situation was worse in Sweden than in Norway. After New Year the deviation from the normal reservoir level has been much the same in the two countries and has changed in parallel. During this period the exchange between the two countries has approximately balanced and the power flow from Sweden to Norway has grown gradually. With this as a background, there is no basis for asserting that the Norwegian producers have managed the water resources in an irresponsible way. In general, the power flow and the water resource management in the two countries appear reasonable considering the water influx and the prices. Different market imperfections may nevertheless have rendered the water resource management socially less then optimal.

  18. Counter rotating type hydroelectric unit suitable for tidal power station

    Energy Technology Data Exchange (ETDEWEB)

    Kanemoto, T [Faculty of Engineering, Kyushu Institute of Technology, Sensui 1-1, Tobata, Kitakyushu 804-8550 (Japan); Suzuki, T, E-mail: turbo@tobata.isc.kyutech.ac.j [Graduate School of Engineering, Kyushu Institute of Technology, Sensui 1-1, Tobata, Kitakyushu 804-8550 (Japan)

    2010-08-15

    The counter rotating type hydroelectric unit, which is composed of the axial flow type tandem runners and the peculiar generator with double rotational armatures,was proposed to utilize effectively the tidal power. In the unit, the front and the rear runners counter drive the inner and the outer armatures of the generator, respectively. Besides, the flow direction at the rear runner outlet must coincide with the flow direction at the front runner inlet, because the angular momentum through the rear runner must coincides with that through the front runner. That is, the flow runs in the axial direction at the rear runner outlet while the axial inflow at the front runner inlet. Such operations are suitable for working at the seashore with rising and falling tidal flows, and the unit may be able to take place of the traditional bulb type turbines. The tandem runners were operated at the on-cam conditions, in keeping the induced frequency constant. The output and the hydraulic efficiency are affected by the adjustment of the front and the blade setting angles. The both optimum angles giving the maximum output and/or efficiency were presented at the various discharges/heads. To promote more the tidal power generation by this type unit, the runners were also modified so as to be suitable for both rising and falling flows. The hydraulic performances are acceptable while the output is determined mainly by the trailing edge profiles of the runner blades.

  19. Counter rotating type hydroelectric unit suitable for tidal power station

    Science.gov (United States)

    Kanemoto, T.; Suzuki, T.

    2010-08-01

    The counter rotating type hydroelectric unit, which is composed of the axial flow type tandem runners and the peculiar generator with double rotational armatures,was proposed to utilize effectively the tidal power. In the unit, the front and the rear runners counter drive the inner and the outer armatures of the generator, respectively. Besides, the flow direction at the rear runner outlet must coincide with the flow direction at the front runner inlet, because the angular momentum through the rear runner must coincides with that through the front runner. That is, the flow runs in the axial direction at the rear runner outlet while the axial inflow at the front runner inlet. Such operations are suitable for working at the seashore with rising and falling tidal flows, and the unit may be able to take place of the traditional bulb type turbines. The tandem runners were operated at the on-cam conditions, in keeping the induced frequency constant. The output and the hydraulic efficiency are affected by the adjustment of the front and the blade setting angles. The both optimum angles giving the maximum output and/or efficiency were presented at the various discharges/heads. To promote more the tidal power generation by this type unit, the runners were also modified so as to be suitable for both rising and falling flows. The hydraulic performances are acceptable while the output is determined mainly by the trailing edge profiles of the runner blades.

  20. Culinary and pressure irrigation water system hydroelectric generation

    Energy Technology Data Exchange (ETDEWEB)

    Christiansen, Cory [Water Works Engineers, Pleasant Grove City, UT (United States)

    2016-01-29

    Pleasant Grove City owns and operates a drinking water system that included pressure reducing stations (PRVs) in various locations and flow conditions. Several of these station are suitable for power generation. The City evaluated their system to identify opportunities for power generation that can be implemented based on the analysis of costs and prediction of power generation and associated revenue. The evaluation led to the selection of the Battle Creek site for development of a hydro-electric power generating system. The Battle Creek site includes a pipeline that carries spring water to storage tanks. The system utilizes a PRV to reduce pressure before the water is introduced into the tanks. The evaluation recommended that the PRV at this location be replaced with a turbine for the generation of electricity. The system will be connected to the utility power grid for use in the community. A pelton turbine was selected for the site, and a turbine building and piping system were constructed to complete a fully functional power generation system. It is anticipated that the system will generate approximately 440,000 kW-hr per year resulting in $40,000 of annual revenue.

  1. Modeling flood induced interdependencies among hydroelectricity generating infrastructures.

    Science.gov (United States)

    Sultana, S; Chen, Z

    2009-08-01

    This paper presents a new kind of integrated modeling method for simulating the vulnerability of a critical infrastructure for a hazard and the subsequent interdependencies among the interconnected infrastructures. The developed method has been applied to a case study of a network of hydroelectricity generating infrastructures, e.g., water storage concrete gravity dam, penstock, power plant and transformer substation. The modeling approach is based on the fragility curves development with Monte Carlo simulation based structural-hydraulic modeling, flood frequency analysis, stochastic Petri net (SPN) modeling, and Markov Chain analysis. A certain flood level probability can be predicted from flood frequency analysis, and the most probable damage condition for this hazard can be simulated from the developed fragility curves of the dam. Consequently, the resulting interactions among the adjacent infrastructures can be quantified with SPN analysis; corresponding Markov Chain analysis simulates the long term probability matrix of infrastructure failures. The obtained results are quite convincing to prove the novel contribution of this research to the field of infrastructure interdependency analysis which might serve as a decision making tool for flood related emergency response and management. PMID:19570603

  2. Environmental mitigation at hydroelectric projects. Volume 2, Benefits and costs of fish passage and protection

    Energy Technology Data Exchange (ETDEWEB)

    Francfort, J.E.; Rinehart, B.N.; Sommers, G.L. [EG and G Idaho, Inc., Idaho Falls, ID (United States); Cada, G.F.; Jones, D.W. [Oak Ridge National Lab., TN (United States); Dauble, D.D. [Pacific Northwest Lab., Richland, WA (United States); Hunt, R.T. [Hunt (Richard) Associates, Inc., Concord, NH (United States); Costello, R.J. [Northwest Water Resources Advisory Services (United States)

    1994-01-01

    This study examines envirorunental mitigation practices that provide upstream and downstream fish passage and protection at hydroelectric projects. The study includes a survey of fish passage and protection mitigation practices at 1,825 hydroelectric plants regulated by the Federal Energy Regulatory Commission (FERC) to determine frequencies of occurrence, temporal trends, and regional practices based on FERC regions. The study also describes, in general terms, the fish passage/protection mitigation costs at 50 non-Federal hydroelectric projects. Sixteen case studies are used to examine in detail the benefits and costs of fish passage and protection. The 16 case studies include 15 FERC licensed or exempted hydroelectric projects and one Federally-owned and-operated hydroelectric project. The 16 hydroelectric projects are located in 12 states and range in capacity from 400 kilowatts to 840 megawatts. The fish passage and protection mitigation methods at the case studies include fish ladders and lifts, an Eicher screen, spill flows, airburst-cleaned inclined and cylindrical wedgewire screens, vertical barrier screens, and submerged traveling screens. The costs, benefits, monitoring methods, and operating characteristics of these and other mitigation methods used at the 16 case studies are examined.

  3. A critical view on the eco-friendliness of small hydroelectric installations.

    Science.gov (United States)

    Premalatha, M; Tabassum-Abbasi; Abbasi, Tasneem; Abbasi, S A

    2014-05-15

    Renewable energy sources are widely perceived as 'clean', 'green', and 'inexhaustible'. In recent years the spectre of global warming and ocean acidification, which has been primarily attributed to fossil fuel burning, has brought renewable energy at the forefront of most climate change mitigation strategies. There is strong advocacy for large-scale substitution of conventional energy sources with the renewables on the premise that such a move would substantially reduce environmental degradation and global warming. These sentiments are being echoed by scientists and policy makers as well as environmental activists all over the world. 'Small hydro', which generally represents hydroelectric power projects of capacities 25 MW or lower, is one of the renewable energy options which is believed to be clean and sustainable even as its bigger version, large hydro, is known to cause several strongly adverse environmental impacts. This paper brings out that the prevailing perception of 'eco-friendliness' of small hydro is mainly due to the fact that it has only been used to a very small extent so far. But once it is deployed at a scale comparable to fossil fuel use, the resulting impacts would be quite substantially adverse. The purpose is not to denegrade small hydro, less so to advocate use of fossil fuels. It, rather, is to bring home the point that a much more realistic and elaborate assessment of the likely direct as well as indirect impacts of extensive utilization of this energy source than has been done hitherto is necessary. PMID:24332792

  4. Dams in the Amazon: Belo Monte and Brazil's hydroelectric development of the Xingu River Basin.

    Science.gov (United States)

    Fearnside, Phillip M

    2006-07-01

    Hydroelectric dams represent major investments and major sources of environmental and social impacts. Powerful forces surround the decision-making process on public investments in the various options for the generation and conservation of electricity. Brazil's proposed Belo Monte Dam (formerly Kararaô) and its upstream counterpart, the Altamira Dam (better known by its former name of Babaquara) are at the center of controversies on the decision-making process for major infrastructure projects in Amazonia. The Belo Monte Dam by itself would have a small reservoir area (440 km2) and large installed capacity (11, 181.3 MW), but the Altamira/Babaquara Dam that would regulate the flow of the Xingu River (thereby increasing power generation at Belo Monte) would flood a vast area (6140 km2). The great impact of dams provides a powerful reason for Brazil to reassess its current policies that allocate large amounts of energy in the country's national grid to subsidized aluminum smelting for export. The case of Belo Monte and the five additional dams planned upstream (including the Altamira/Babaquara Dam) indicate the need for Brazil to reform its environmental assessment and licensing system to include the impacts of multiple interdependent projects. PMID:16738820

  5. Influence of a Small Hydroelectric Power Station on the River Ecosystem.

    Directory of Open Access Journals (Sweden)

    Enrique Valero

    2014-10-01

    Full Text Available To assess the effects of the Small Hydroelectric Power Station (SHP on the fluvial ecosystem, some environmental values are required to measure. This work provides acharacterization of the water quality status in a river stretch around a SHP plant on river Mandeo, (NW Spain, for three years after its construction. The ecological and chemicalstatus of the water and the ecological quality of the riparian habitat was analyzed and comparing with the water quality requirements. The results showed that there were notsignificant differences between sampling points (before and after of the plant, as well as a stabilization of the parameters within two years after the construction of the Station,achieving conditions ecologically compatible. We concluded that the construction of the SHP plant caused an adverse effect in the ecosystem, which was subsequently improved.Highly positive results from the point of view of their contribution as a source of renewable energy.Keywords: Biological index, physicochemical, SHP plant, riparian forest quality index

  6. Effectiveness of water release as mitigation for hydroelectric impacts to fish

    International Nuclear Information System (INIS)

    Utility companies release water to mitigate the effects of hydroelectric projects on fish habitats. Utility companies, government agencies, and research communities in Canada, the US, Europe, New Zealand, and Australia were surveyed as part of a Canadian Electrical Association study to evaluate the effectiveness of water release as a mitigation. Respondents identified only 28 projects in which water was released specifically to protect fish habitats. Fewer than half of these projects (12) were judged as being effective. Six case histories with preimpact assessment and postimpact monitoring were reviewed. In four cases fish habitat or fish populations or both were maintained; in two cases they were not. The effectiveness of water release differed among rivers and fish species, and was greatest when designed to meet the habitat requirements of each life-history stage. A review of the literature did not support the theory that a particular fraction of the mean annual flow provides the bet fish habitat. Although smaller changes in the flow regime had smaller effects, increasing minimum flows above those historically observed did not necessarily increase fish production

  7. National hydroelectric power resources study. Preliminary inventory of hydropower resources. Volume 1. Pacific Northwest region

    Energy Technology Data Exchange (ETDEWEB)

    None

    1979-07-01

    The preliminary inventory and analysis procedures provide a comprehensive assessment of the undeveloped hydroelectric power potential in the US and determines which sites merit more thorough investigation. Over 5400 existing structures have been identified as having the physical potential to add hydropower plants or increase hydropower output thereby increasing our present hydropower capacity from a total of 64,000 MW to 158,000 MW and our energy from 280,000 GWH to 503,000 GWH. While the physical potential for this increase is clearly available, some of these projects will undoubtedly not satisfy more-detailed economic analysis as well as the institutional and environmental criteria which will be imposed upon them. Summary tables include estimates of the potential capacity and energy at each site in the inventory. In some cases, individual projects may be site alternatives to others in the same general location, when only one can be considered for hydropower development. The number of sites per state is identified, but specific information is included for only the sites in Alaska, Idaho, Oregon, and Washington in this first volume.

  8. Pingston hydroelectric project - stage 2 project report : volume 1 of 2

    International Nuclear Information System (INIS)

    The British Columbia Environmental Assessment Office has reviewed an application by Canadian Hydro Developers (B.C.) Inc., to develop the Pingston Hydroelectric Project, a run-of-river facility, located 60 km south of Revelstoke, British Columbia. The review includes an evaluation of any social and environmental impacts, including the effects on migratory birds, small mammals, amphibians, fish, wildlife, water quality, noise and visual aspects, that would be associated with the project. One consideration in selecting the project site was its ease of access along existing roadways and close proximity to power lines, another, the absence of any potential effects on fish and fish habitat. The project is also expected to have a negligible effect on water quality- related matters such as sediment transport, nutrient trapping in the headpond, and movement of large organic debris through the system. The project will not impact on archaeological resources, offers a renewable supply of energy and represents an overall positive effect on air quality for British Columbia. BC Hydro has committed to providing electrical interconnection to the main grid. 9 refs., 5 tabs., 14 figs., 9 appendices

  9. Environmental analysis report for the hydroelectric project on the Sheldrake River in the Courbe du Sault section in the municipality of Riviere-au-Tonnerre by the Societe d'energie riviere Sheldrake Inc

    International Nuclear Information System (INIS)

    The Societe d'energie riviere Sheldrake Inc. (SERS Inc.) is planning to exploit the hydroelectric potential of the Sheldrake River in the Quebec municipality of Riviere au Tonnere. The proposed project will involve building a hydroelectric power station with a maximum capacity of 25 MW on the Sheldrake River, in the Courbe du Sault section. The project will also comprise a dam, a water reservoir and an overflow spillway. The project meets the province's 2006-2015 energy strategy to develop small-scale hydroelectric facilities. The project was subject to an environmental assessment as required by the province of Quebec. This environmental analysis addressed the major challenges facing the hydroelectric development at the Courbe du Sault section of the River, notably the impact on fish habitat, wetlands and the local and regional economic benefits. The environmental assessment did not indicate any habitat destruction for trout or salmon in the forebay. The Quebec Ministry of Sustainable Development, Environment and Parks has deemed the project to be acceptable given that certain conditions are met, including thresholds to stabilize the water level and the construction of a downstream fish passage facility to allow for safe fish migration. 22 refs., 2 tabs., 5 figs., 3 appendices.

  10. Impact on the aquatic environment of hydro-peaking in hydroelectric plants

    International Nuclear Information System (INIS)

    There are a number of types of hydroelectric installations on French rivers. Some of these intermittently turbine water stored in dammed reservoirs, in order to use available reserves at the most opportune moment for power generation. These plants, run under 'hydro-peaking' management procedures, cause variations in discharge in river sections downstream of the restitution, on a daily or weekly scale. To answer questions concerning the impact of such variations in discharge on the aquatic environment, EDF launched a research program aimed at describing and better understanding the physical and biological phenomena related to hydro-peaking and assessing the possible impact of this type of plant management on French streams. Seven sites subjects to hydro-peaking were studied on rivers with mean flow rates lower than 20 m3/s (which corresponds to over 65 % of EDF hydro-peaking sites). Four themes in particular were examined: hydraulic characterization of hydro-peaking, modifications in thermal regime and water quality, response of benthic invertebrates and response of fish populations to hydro-peaking. For fish as well as for invertebrates, the role of the base discharge - in the absence of peaking flow - and that of the morphology of the river bed (and, in particular, the presence of shelter for fish) during periods of strong discharge were clearly highlighted. Impact assessment requires a precise diagnosis of the state of biocenoses. To carry out such a diagnosis, one must reason in terms of species, life phase (particularly the most sensitive phases) and population structure as well as the type of stream and the faunizone involved. A risk assessment is possible by means of simultaneous study of the morphology of the river bed and the response of the signal generated by hydro-peaking in terms of hydrology and physical characteristics downstream of the restitution. (authors)

  11. River flow maintenance turbine for Milner Hydroelectric Development

    Energy Technology Data Exchange (ETDEWEB)

    Carson, J.L.; Holveck, W.H.; Gokhman, A. [and others

    1995-12-31

    The Milner Hydroelectric Project on the Snake River in Idaho was commissioned in 1992. The project included renovation of an existing dam, which was built to supply irrigation water to a canal system, construction of a new spillway, and the addition of a new powerhouse. The forebay of the main powerhouse is located on a combination power and irrigation canal, approximately 3500 feet (1070 m) from the dam, with a short tailrace returning the water to the river. There are two Kaplan turbines installed in the main powerhouse, rated at 1000 cfs and 4000 cfs respectively at a net head of 150 feet. The FERC license required that a target flow of 200 cfs be released from the dam to maintain a stream flow between the dam and the powerhouse. In order to utilize this flow, a small powerhouse was constructed at the toe of the dam. The site conditions favored a vertical axial flow turbine, with a net head of 56 feet. As the flow is constant and the head is fairly constant, a fixed geometry turbine was selected, to be controlled solely by the intake gate. Due to the higher head, the main powerhouse can generate more power per unit of flow than can the bypass turbine. Therefore, it is undesirable for the discharge of the bypass turbine to be any greater than required by the license. Also, the release flow is determined by a river gauge, the accuracy of which is unknown, but assumed to be within five percent. In order to meet these two requirements, the turbine was specified to have manually adjustable runner blades to obtain the required release flow of 200 cfs at any head between 55 and 58 feet.

  12. The Hydroelectric Business Unit of Ontario Power Generation Inc

    International Nuclear Information System (INIS)

    The focus of this presentation was on the generation and sale of electricity. Prior to deregulation, companies that generated electricity had a readily available customer base to whom the electricity could be sold. The author discussed some of the changes affecting the industry as a result of deregulation of the electricity market in Ontario: the increasing number of companies, as well as the increased number of generators supplying power within the province. Currently 85 per cent of the generation in Ontario is met by Ontario Power Generation (OPG) and this percentage will decrease through de-control. De-control can be achieved in a variety of ways, either through the sale of assets, leases, asset swaps. The market rules dictate that OPG not control in excess of 35 per cent of the generation supply in Ontario, OPG is examining the situation. New supply being constructed or new interconnections with neighboring markets could affect the total assets that would have to be de-controlled. OPG has a mix of generation that includes hydroelectric, fossil, and nuclear, as well as a single wind turbine. Green power, defined as electricity generation deemed less intrusive environmentally than most traditional generation, includes wind, water, landfill gas, solar and others, and could affect the mix of generation. It is expected that there will be a niche market for green power, especially when one considers the reduction in emissions. It could represent a viable option for smaller startup companies, as less capital is required. The options for selling the power, either to the spot market or by entering into a bilateral contract with another customer, were explained

  13. Swift Creek Hydroelectric Project rehabilitation, Swift Creek Power Company, Inc

    International Nuclear Information System (INIS)

    The purpose of this report is to re-evaluate and update the original environmental analysis of the Swift Crook Hydroelectric Project rehabilitation. That analysis and the decision to allow the proponent toproceed with the project as described in the EA alternatives 3, 4, and 5 was completed an May 8, 1981. Since that decision, no action has been taken and no special-use permit has ever been issued. The Bridger-Trton National Forest completed a Forest Plan in March of 1990 which sets current direction for all lands within the Forest and new and significant issues pertaining to the amount of water to be bypassed have been raised by the public in response to this proposed project. The original proponent, Lower Valley Power and Light, sold the project and existing facilities to Swift Crack Power Company Inc. in 1984. Swift Crock Power Company has submitted a proposal to rehabilitate the existing power generation facility in Swift Creek Canyon, which will involve some significant construction and alteration of the river corridor. Theyhave also submitted an application for relicense to the Federal Energy Regulatory Commission who has asked for the Forest Service to comment on the application and to submit recommended conditions for approval (4e requirements). The proposed rehabilitation of existing facilities includes replacement of the existing damaged penstock (pipe) with a new, larger one; dredging two existing reservoirs and removal, refurbishment, and reinstallation of the turbines and generators in the two powerhouses with relocation and reconstruction of the lower powerhouse that is located on privately owned land below the Forest boundary

  14. Cut-off wall construction at the Peribonka hydroelectric project

    Energy Technology Data Exchange (ETDEWEB)

    Ouellette, C.; Morency, J.Y.; Bigras, A.; Hammamji, Y. [Hydro-Quebec Equipment, Montreal, PQ (Canada); Gagne, B. [SNC-Lavalin, Montreal, PQ (Canada); Rattue, A. [SNC-Lavalin, Montreal, PQ (Canada). Energy Division

    2007-07-01

    The Peribonka hydroelectric development, located in Quebec includes a 80 metre high dam and two dikes consisting of zoned earth and rock fills with a till core, an underground power house, a diversion tunnel and a spillway. The project is in its final stages of construction and presented several challenges related to the presence of a deep canyon under the river bed filled with alluvial sand, gravel, cobbles and boulders. The design included an approximately 10 metre high working platform in the river and the construction of a plastic concrete cut-off wall down to bedrock. The construction of a 116 metre deep single cut-off wall that is at the limit of precedent in terms of present knowledge and equipment capacity was the main challenge for the project. In addition, a 52 metre deep plastic concrete cut-off wall was built under a dyke. This conference discussed the cut-off wall construction experience, as well as the challenges encountered and how they were addressed. The paper presented a description of the site conditions and the scope of the work, as well as the typical specifications of the cut-offs. The paper also provided an overview of an extensive quality control program that was implemented for all phases of the project construction and results of the project. Last, the paper described the challenges, problems encountered and the modifications from the initial design and specifications. It was concluded that the topography at the Peribonka dam site showed a deep narrow gully filled with alluvial material comprising sand, gravel, cobbles and boulders. Elaborate quality control was essential to ensure that excavation and concreting were done to satisfactory standards. 4 refs., 4 tabs., 11 figs.

  15. La educación ambiental en la básica primaria : perspectivas desde la Teoría Ecológica de Urie Bronfenbrenner = The environmental education in the elementary school : perspectives from the Ecology Theory of Urie Bronfenbrenner

    OpenAIRE

    Cano Sterling, Laura Catalina

    2012-01-01

    Este trabajo investigativo presenta los procesos que se vienen realizando en educación ambiental y la manera como estos están influyendo en el desarrollo integral de los niños, en dos entornos, uno urbano con un grupo de 2º y uno rural con niños de 3º, haciendo un análisis riguroso bajo la perspectiva de la Teoría Ecológica de Urie Bronfenbrenner, desde aquí se establecen las características de la educación ambiental en cada uno de los sistemas seriados de la teoría ecológica, partiendo d...

  16. The performance study of a small hydroelectric power system

    International Nuclear Information System (INIS)

    A small hydroelectric power system of an undershot waterwheel was designed, constructed and experimented in the hydraulic channel which has a sluice gate as a small dam. The constructed waterwheel diameter could be changed from 0.4 m to 0.6 m at interval steps of 0.04 m. The number of blades of the constructed waterwheel could be changed from 9 to 12 to 18 and to 36 blades. By increasing the water mass flow rate from 0.341 to 1.765 kg/s at channel cross sectional area (12.75 cm2), the undershot waterwheel generated power which increased to 0.201 Watt, the mechanical efficiency increased to more than 10.8%, and the electrical efficiency increased to more than 80.6%. But the channel efficiency was decreased to 10.9%. while the volumetric efficiency was fixed at 72.9%. The waterwheel efficiency 17.25 m2 at fixed water mass flow rate (1.765kg/s), the undershot waterwheel generated power system decreased in the following. The generator output power from 0.201 to 0.067 Watt, the mechanical efficiency reduced to 26.7% and the electrical efficiency reduced 94.4% and increased the channel efficiency from 8.6% to 100%, the volumetric efficiency from 70.9% to 75.5%, and the waterwheel efficiency from 85.7%( to 91.3%. The transitional efficiency was fixed at 97.9%. The maximum overall efficiency of the small generated power system was 6.69% at the water head 15.45 cm. The output power was 0.18 Watt. these values obtained when the number of blades 36, number of revolutions per minute 57 rpm, waterwheel diameter 0.44 m, water mass flow rate 1.765 kg/s, and channel cross sectional area 12.75 cm2. The theoretical extrapolation of the waterwheel diameter to 2 m with water head of 5 m gives an output generated power of 675 Watt.(Author)

  17. Optimal operation of cascaded hydroelectric power plants in the power market

    Institute of Scientific and Technical Information of China (English)

    蔡兴国; 马平; 林士颖

    2004-01-01

    An improved network flow algorithm, which includes the minimum cost network flow and the same period network flow, is proposed to solve the optimization of cascaded hydroelectric power plants in a competitive electricity market. The typical network flow is used to find the feasible flow and add the discharge water to different cascaded hydroelectric power plants at the same step. The same period network flow is used to find the optimal flow and add the power output at a different step. This new algorithm retains the advantages of the typical network flow, such as simplicity and ease of realization. The result of the case analysis indicates that the new algorithm can achieve high calculation precision and can be used to calculate the optimal operation of cascaded hydroelectric power plants.

  18. The little hydro-electricity: the boosting?; Petit hydraulique: la relance?

    Energy Technology Data Exchange (ETDEWEB)

    Brunier, S. [Helianthe, Espace Information Energie de l' Ain (France); Najac, C. [Groupement de Producteurs d' Energie Hydroelectrique, 75 - Paris (France); Roussel, A.M. [Electricite Autonome Francaise (EAF), 92 - Le Plessis Robinson (France); Claustre, R [Comite de Liaison Energies Renouvelables (CLER), 93 - Montreuil (France); Baril, D. [Delegue Regional du Conseil Superieur de la Peche, Languedoc Roussillon, PACA, Corse (France); Marty, D.; Lefevre, P. [Hydro-M, 31 - Toulouse (France); Arnould, M. [WWF - Programme Rivieres vivantes, 42 - Saint-Etienne (France)

    2007-05-15

    The hydraulic energy could be easily developed in France to reach the objectives of the european directive on the renewable energies. This development can be assured by the construction of power plants perfectly integrated in their environment and respecting the rivers and assured also by the increase of the capacities of existing power plants as it is allowing by the new regulations. This document presents the place and the capacity of the hydro-electricity in France, the implementing of a green electricity, the existing regulation, the river biological continuation, the ecosystems and the little hydro-electricity and the example of the hydro-electric power plant of Scey-sur-Saone. (A.L.B.)

  19. The use of an advanced risk-based asset management system for evaluation of rehabilitation options for an aging hydroelectric station

    International Nuclear Information System (INIS)

    An advanced risk-based asset management system, designed to assist in collating rehabilitation/ replacement options for individual components of an electric power plant was described. Application of the technique to determine rehabilitation options for an aging hydroelectric power station in Northern Ontario, was demonstrated. The method helped to assess a wide range of complex alternatives, the direct and indirect costs associated with delayed implementation of the alternatives, partial or full rehabilitation of the site, and the construction of an entirely new replacement facility.3 refs., 8 figs., 3 photos

  20. The business for power : hydro-electricity in southeastern British Columbia 1897-1997

    International Nuclear Information System (INIS)

    The evolution and development of the hydroelectric power industry in southeastern British Columbia was chronicled by recounting the first hundred years of the West Kootenay Power and Light Electrical Utility. The utility's first generator produced electricity in the summer of 1898 when hydro-electric companies were a new phenomenon. The factors behind the success of the company, the personalities of the promoters and entrepreneurs that launched the company, the complex interplay of unique events and the social and political context that illustrate a fascinating process in which electricity became an integral part of everyday life, are described. Refs., tabs., figs

  1. Report on the development perspectives of the hydroelectric production in France

    International Nuclear Information System (INIS)

    This report, presented to the Ministry of the Economy, the Finances and the Industry, has been realized by the high ranking of the sustainable development of the Ministry. It presents the synthesis of the working group study at the second half year 2005 and proposes to the Ministry some practical actions to develop the hydroelectric production in France. After a presentation of the hydro electric-power challenges and potential, the author discusses the regulatory context of the hydroelectric power development, the conditions of this development and proposes some actions. (A.L.B.)

  2. 世界水电开发展望%Perspective of hydroelectric development in the world

    Institute of Scientific and Technical Information of China (English)

    郭大本

    2001-01-01

    从资源利用和环境保护角度,论述了世界水电开发的现状和优势,就大力开发以水电为主的清洁能源提出了建议。%This article discussed the status and superiority of hydroelectric development in the world from resource development and environmental protection perspective.A few suggestions were made on developing the clean energies among which hydroelectric energy plays the major role.

  3. Geodetic works during construction of hydroelectric power stations on lower Sava

    OpenAIRE

    Bonča, Klemen

    2011-01-01

    Slovenia is among the water-richest countries in Europe. Through our territory runns quite a few rivers on which we have successfully built a hydroelectric power plants to generate electricity. Already in the 80 - s, our experts were increasingly concerned by the increase in renewable electricity in that way. River Sava was preferred in the lower reaches, flowing through Brežice to Croatia. It was suggested to build hydro chain, which includes construction of hydroelectric power plants: Bošta...

  4. Least cost addition of power from hydroelectrical developments: Maximizing existing assets

    Energy Technology Data Exchange (ETDEWEB)

    Felix, Lafontant; Briand, Marie-Helene; Veilleux, Rheaume

    2010-09-15

    Hydroelectric developments built in the early 1900's are nearing their useful lifespan and require significant rehabilitation in order to meet modern safety and performance criteria. Also, global increasing energy costs represent a strong incentive for operators to find low-cost, environment-friendly solutions while increasing energy generation at existing facilities. Projects promoting innovative ways of recycling existing developments are great examples of sustainable development and represent win-win solutions for population and hydropower industry alike. The proposed presentation describes successful projects consisting in the rehabilitation or addition of power to existing hydroelectric. These recycling projects are very attractive from both economic and environmental.

  5. Legal obstacles and incentives to the development of small scale hydroelectric power in Pennsylvania

    Energy Technology Data Exchange (ETDEWEB)

    None,

    1980-05-01

    The legal and institutional obstacles to the development of small-scale hydroelectric energy at the state level are discussed. The Federal government also exercises extensive regulatory authority in the area, and the dual regulatory system from the standpoint of the appropriate legal doctrine, the law of pre-emption, application of the law to the case of hydroelectric development, and an inquiry into the practical use of the doctrine by the FERC is examined. In Pennsylvania, there are 3 methods by which rights in water may be acquired: riparian ownership, prescription, and condemnation. These are discussed.

  6. Natural Deaths Of Giant Otters (Pteronura brasiliensis In Balbina Hydroelectric Lake, Amazonas, Brazil

    Directory of Open Access Journals (Sweden)

    Weber Rosas F.C.

    2003-10-01

    Full Text Available In 1987 the Brazilian Northern Electric Company (ELETRONORTE finished damming the Uatumã River that formed the 3,246 km2 lake (containing 3,299 islands of the Balbina hydroelectric power station. In 2001, through a project entitled "Social organization, behavior and diet of the giant otter (Pteronura brasiliensis in the influenced area of Balbina hydroelectric power station, Amazonas, Brazil", the authors started to study giant otters in the reservoir (de MATTOS et al., 2002; ZUANON et al., 2002. Despite being an enormous area, we managed to record two dead otters in the lake.

  7. 76 FR 6820 - Contract for Hydroelectric Power Development at the C-Drop, a Feature of the Klamath Project...

    Science.gov (United States)

    2011-02-08

    ... Bureau of Reclamation Contract for Hydroelectric Power Development at the C-Drop, a Feature of the... accept proposals, select one lessee, and contract for hydroelectric power development at the Klamath... with the C-Drop, for non-Federal electric power generation and sale by the entity. Leases of...

  8. 75 FR 62531 - Alabama Power Company; Project No. 349-150-Alabama Martin Dam Hydroelectric Project; Notice of...

    Science.gov (United States)

    2010-10-12

    ... Energy Regulatory Commission Alabama Power Company; Project No. 349-150--Alabama Martin Dam Hydroelectric... of Historic Places at the Martin Dam Hydroelectric Project. The Programmatic Agreement, when executed.... Dr. James Kardatzke Bureau of Indian Affairs Eastern Regional Office 545 Marriott Drive, Suite...

  9. 77 FR 10740 - Lock+ Hydro Friends Fund XVIII, Upper Hydroelectric, LLC, FFP Project 95, LLC, Riverbank Hydro No...

    Science.gov (United States)

    2012-02-23

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Lock+ Hydro Friends Fund XVIII, Upper Hydroelectric, LLC, FFP Project 95... Friends Fund XVIII for Project No. 14261-000, Upper Hydroelectric, LLC for Project No. 14268-000,...

  10. 76 FR 6612 - Lock Hydro Friends Fund XLIII; FFP Missouri 14, LLC; Solia 4 Hydroelectric, LLC; Notice...

    Science.gov (United States)

    2011-02-07

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Lock Hydro Friends Fund XLIII; FFP Missouri 14, LLC; Solia 4 Hydroelectric... Hydroelectric, LLC--Project No. 13767-000 2. FFP Missouri 14, LLC--Project No. 13758-000 3. Lock Hydro...

  11. 76 FR 73612 - Lock Hydro Friends Fund XVIII; Upper Hydroelectric LLC; FFP Project 95 LLC; Riverbank Hydro No...

    Science.gov (United States)

    2011-11-29

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Lock Hydro Friends Fund XVIII; Upper Hydroelectric LLC; FFP Project 95 LLC... Friends Fund XVIII (Lock Hydro), Upper Hydroelectric LLC (Upper Hydro), Riverbank Hydro No. 25...

  12. Potential hydroelectric power. Vertical turbine: spillway combine Broadwater Dam. Final report

    Energy Technology Data Exchange (ETDEWEB)

    Willer, D.C.

    1979-04-23

    A feasibility study was made of the hydroelectric power potential at Broadwater Dam in western Montana. Two alternative configurations for the potential project were evaluated and the economics of four possible sources of project funding were assessed. The configurations analyzed were an apron-mounted configuration, in which the turbine-generator units are located on the downstream apron of the existing dam, and a conventional configuration, in which the units are located in a new powerhouse adjacent to the existing dam. The funding sources considered were the Department of Energy loan program, the United States Bureau of Reclamation PL-984 loan program and conventional revenue bonds, both taxable and tax-exempt. The optimal project alternative was determined to be the apron-mounted configuration. The final choice of funding would be dependent on the power purchaser. It was shown that, regardless of the configuraton or funding source selected, the project would be feasible. The cost of the apron-mounted configuration, which would consist of four turbine-generator units for a total installed capacity of 9.76 MW, was estimated as $13,250,000 with financing provided by either a PL-984 loan or tax-exempt bonds. The cost per installed kilowatt was therefore $1,350, and the cost per kilowatt-hour was 19.6 mills. The average annual energy was estimated to be 56.44 million kWh, the equivalent of approximately 87,000 barrels of oil per y. It is therefore recommended that the Montana Department of Natural Resources and Conservation proceed with the project and that discussions be initiated with potential power purchasers as soon as possible.

  13. The ecological impact of small hydroelectric plant; Gewaesseroekologische Wirkungen von Kleinwasserkraftwerken

    Energy Technology Data Exchange (ETDEWEB)

    Biss, R. [Buero fuer Gewaessergutachten, Freiburg i.Br. (Germany); Volkmann, J. [GHG - Umweltdaten GbR, Buchenbach (Germany); Wolf-Schwenninger, K. [Buero Entomologie und Oekologie, Stuttgart (Germany)

    1999-07-01

    In order to analyse current and future potential ecological effects of single and multiple hydroelectric plant on a small river in the Black Forest area of Germany, the biocommunities of benthic macroinvertebrates and beetles living at the river banks were used to estimate ecological quality of the river, which is in some parts among the highest in the area. Those sections of the watercourse which have only residual discharges almost always show lower flow velocities than sections with complete discharge. When several river sections with residual discharges follow in succession, transport of coarse-grained bedload is interrupted, and only finegrained substratum is available for colonisation by macro-invertebrates and beetles. The reduced flow velocity and the limited transport of bedload alters the available habitats, shifting lower hydro-ecological zones upstream. The extent of long-term detrimental effects should therefore be assessed for suitable reference sections of a river covering all potentially affected hydroecological zones. (orig.) [German] An einem kleinen Schwarzwaldfluss wurden aktuelle und potentielle gewaesseroekologische Wirkungen von einzelnen und hintereinandergeschalteten Kleinwasserkraftanlagen untersucht. Als fuer die Beurteilung des gewaesseroekologischen Zustandes geeignete Lebensgemeinschaften wurden die Kleinlebewesen der Stromsohle (Makrozoobenthon) und die am Ufer siedelnden Kaeferarten ausgewaehlt. Das Untersuchungsgewaesser und seine Quellbaeche gehoeren zumindest abschnittsweise zu den wertvollen Fliessgewaessern des Naturraumes. Die untersuchten Restwasserstrecken weisen fast stets geringere Fliessgeschwindigkeiten auf als die Vollwasserstrecken. Der Transport von groeberem Geschiebe ist in mehreren hintereinander geschalteten Restwasserstrecken unterbrochen, so dass fast nur noch feinkoerniges Substrat fuer das Makrozoobenthon und die Kaeferbesiedlung zur Verfuegung steht. Die herabgesetzte Fliessgeschwindigkeit und der

  14. Hydroelectric construction project on the Sheldrake River at Riviere-au-Tonnerre : public inquiry report

    International Nuclear Information System (INIS)

    The Societe d'Energie Riviere Sheldrake Inc. has proposed the construction of a hydroelectric facility on the Sheldrake River at Riviere-au-Tonnerre in the regional municipality of Minganie in Quebec. The project involves the construction of a headrace canal, intake, tunnel, powerhouse, access roads, electrical transmission line, spillway, weir and a bridge over the Sheldrake River. The proposed development was subject to an environmental evaluation process and public consultation. Quebec's environmental public hearing board held a public hearing on the draft development of the project to hear the concerns and views of the public and stakeholders. The hearing focused on a number issues, such as reasons for the project, its location and socio-economic impacts. The cumulative environmental effects of the project were also examined. The primary concerns were the economic repercussions of the project and its effect on tourism and fish, including salmon. The Board determined that the project would create jobs in a region affected by unemployment and the decay of its municipalities and that it would stimulate the local and regional economy. However, the Board determined that changes to the project are required to minimize impacts on the natural environment. The project proponent must monitor instream flows to ensure that fish passage facilities meet regulations. In addition, since the proposed project crosses 3 bogs, the developer must compensate for lost wetlands. A 10-year follow-up is required to assess the recovery of these environments. The developer must also maintain the aesthetic quality of the Courbe du Sault Falls in order to maintain the eco-tourism in the region. refs., figs.

  15. Comparative studies of the global ecological state variation of the aquatic environment in the Crişuri Hydrographic Space between 2007 and 2009

    Directory of Open Access Journals (Sweden)

    Corina Sion

    2011-04-01

    Full Text Available The paper presents a comparative study regarding the evolution across time of the quality of aquatic eco-systems in the Crişuri Hydrographic Space (CHS, between 2007 and 2009. Having as a goal a real and complete image of the quality of the environment in the CHS, the ecological monitoringconducted was meant to observe the structure of the aquatic communities (macrozoobenthos, microphytobenthos, phytoplankton and the biotope characteristics (physical and chemical parameters of water: pH, conductivity, dissolved oxygen, CBO5, CCO-Mn, CCO-Cr, nitrites, nitrates, phosphates, amonium, chlorophyll “a”, chlorides, sulphates, fix residues, As, Hg, Cu, Zn, Mn, phenols, detergents etc. The choosing of the monitoring sections, their identification and geographical position were accomplished in 2006. The basic criterion in the choice of the monitoring sections was the identification of all aspects that can influence the quality state of the waters. The monitoring of the quality state of the waters in the CHS was conducted in 40 sections, both on the main courses and their affluents, over a 3-year period. After the results of the analyses of physico-chemical and biological samples were obtained, the categorization of the prelevation sections in quality classes followed; depending on these classes, the modelation of the global ecological states of the watercourses in the CHS was realized by means of mapping techniques (GIS. Most of the monitoring sections were in the good ecological state category. The very good ecological state was determined only for those sections upstream all polluting sources. Nevertheless, some of the prelevation points exceeded both physico-chemically and biologically the limits of the good quality state, entering the category of moderate quality state. No watercourse in the CHS was determined for poor or bad quality state. Generally, a “preservation” of the quality state of the waters from one year to the following was

  16. Determining generator parameters of Camargos hydroelectric power plant through frequency response measurement

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, Sebastiao E.M. de; Padua Guarini, Antonio de [Centro de Pesquisas de Energia Eletrica (CEPEL), Rio de Janeiro, RJ (Brazil); Souza, Joao A. de; Valgas, Helio M.; Pinto, Roberto del Giudice R. [Companhia Energetica de Minas Gerais (CEMIG), Belo Horizonte, MG (Brazil)

    1994-12-31

    This work describes the results of the set frequency response tests performed in the generator number 2, 6.9 kV, 25 MVA, of Camargos hydroelectric power plant, CEMIG, and the parameters relatives to determined structures of model. This tests are unpublished in Brazil. (author) 7 refs., 16 figs., 7 tabs.

  17. Introduction to construction and operation of smallest-size hydro-electric power-stations

    International Nuclear Information System (INIS)

    In Switzerland there exists a substantial potential for small hydroelectric power plants. The report deals with technology, environmental compatibility, and efficiency of such installations, gives examples of existing plants, and gives advice on the promotion and financing as well as the advancement of their planning. figs., tabs

  18. Use of Public Consultation in the Nam Theun 2 Hydroelectric Project

    OpenAIRE

    McPhail, Kathryn; Callieri, Christian

    1998-01-01

    The purpose of this note is to describe the public consultation program to date for the Nam Theun 2 (NT2) hydroelectric project and share lessons learned regarding the process and methodologies that were used. The Lao PDR is a large, sparsely populated country with rugged terrain, limited infrastructure, and a weak manufacturing base. Poverty is widespread with nearly 50 percent of the pop...

  19. The new small hydroelectric power plant Bruckhaeusl in Austria; Das neue Kleinwasserkraftwerk Bruckhaeusl in Oesterreich

    Energy Technology Data Exchange (ETDEWEB)

    Senn, Gebhard

    2012-07-01

    The author of the contribution under consideration reports on the new green power plant Bruckhaeusl at the Brixentaler Ache (Austria). This green power plant replaces two hundred years old hydroelectric power plants. The characteristics of this power plant and the characteristics of the weir turbine are tabulated.

  20. Hydraulic Research for Spillway Dam of Jambor Weir at Polotsk Hydroelectric Station

    Directory of Open Access Journals (Sweden)

    G. Kruglov

    2014-09-01

    Full Text Available The paper describes hydraulic tests of discharge capacity and pools conjunction in respect of dam spillway of Jambor weir at the Polotsk hydroelectric station. The process of ice passage through the spillway dam has been studied in the paper. The paper contains recommendations on safety depth downstream.

  1. 76 FR 51027 - F&B Wood Corporation; Milltown Hydroelectric LLC.; Notice of Transfer of Exemption

    Science.gov (United States)

    2011-08-17

    ... Energy Regulatory Commission F&B Wood Corporation; Milltown Hydroelectric LLC.; Notice of Transfer of Exemption 1. Pursuant to section 4.106(i) of the Commission's regulations,\\1\\ F&B Wood Corporation, exemptee... exemption from licensing for Project No. 12629 on October 24, 2006. F&B Wood Corp.,117 FERC ] 62,059...

  2. The role of the hydroelectric power stations in the electro energetic system of Macedonia

    International Nuclear Information System (INIS)

    For quite a long time now, the total electro energy consumption in the electro energetic system of Macedonia has been stagnating at about 5,5 TWh in a year. In the last few years, exactly since the Republic of Macedonia's independence, the electro energetic system has been working with a great level of technological and economic autonomy. The greater part of the electric energy production has been realized in fossil fueled power stations which makes additional problems in the system management. This paper contains an analysis of hydroelectric power stations in such complex conditions.The proposed working regime includes the long- term-seasonal problems, as well as short- term-weekly-hourly problems. For all hydroelectric power stations the yearly-weekly situation of the water level in the accumulation has to be defined, as well as the weekly available quantity of water. With the hydroelectric power station parameters defined in this way, we can determine the hydroelectric and fossil fueled power station weekly-hourly involvement in the system. At the end, some activities are given, which can significantly improve the operation of the whole electro energetic system in a relatively short time. (author). 3 refs., 15 figs., 1 tab

  3. 75 FR 51258 - Boott Hydropower, Inc.; Eldred L Field Hydroelectric Facility Trust; Notice of Application for...

    Science.gov (United States)

    2010-08-19

    ... Energy Regulatory Commission Boott Hydropower, Inc.; Eldred L Field Hydroelectric Facility Trust; Notice... No.: 2790-055. c. Date Filed: July 6, 2010. d. Applicant: Boott Hydropower, Inc. and Eldred L Field... Hydropower, Inc., One Tech Drive, Suite 220, Andover, MA 01810. Tel: (978) 681-1900 Ext 809. i. FERC...

  4. 76 FR 15971 - Eagle Mountain Pumped Storage Hydroelectric Project; Eagle Crest Energy; Notice of Teleconference

    Science.gov (United States)

    2011-03-22

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Eagle Mountain Pumped Storage Hydroelectric Project; Eagle Crest Energy; Notice of Teleconference a. Date and Time of Meeting: Friday, April 15, 2011 at 9 a.m. (Pacific Time)....

  5. 76 FR 22699 - Eagle Mountain Pumped Storage Hydroelectric Project, Eagle Crest Energy; Notice of Teleconference

    Science.gov (United States)

    2011-04-22

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Eagle Mountain Pumped Storage Hydroelectric Project, Eagle Crest Energy; Notice of Teleconference a. Date and Time of Meeting: Friday, May 6, 2011 at 1 p.m. (Pacific Time)....

  6. 75 FR 19989 - Final Environmental Impact Statement for Drought Management Planning at the Kerr Hydroelectric...

    Science.gov (United States)

    2010-04-16

    ..., for which notice was provided in the Federal Register on July 26, 2006 (71 FR 42415). The Kerr... to, effects on hydroelectric power production, recreation, tourism, irrigation, flooding, treaty-protected fisheries, biological resources, wildlife habitat, and Indian traditional and cultural...

  7. 18 CFR 420.51 - Hydroelectric power plant water use charges.

    Science.gov (United States)

    2010-04-01

    ... plant water use charges. 420.51 Section 420.51 Conservation of Power and Water Resources DELAWARE RIVER... Use Charges § 420.51 Hydroelectric power plant water use charges. (a) Annual base charges. Owners of... increased hydraulic head are in effect. (3) Charges for the use of any facilities such as pipe...

  8. Toward Cleaner, Cheaper Power : Streamlined Licensing of Hydroelectric Projects in Brazil

    OpenAIRE

    World Bank

    2009-01-01

    Brazil is confronted with steadily increasing demands for electricity. The country has the ability to meet that demand by developing its considerable hydropower potential, but the regulatory process that governs the approval of new hydroelectric plants imposes unnecessary delays that push up project costs and increase uncertainty. The process, among other reasons, has created a shortage of...

  9. The Victoria Project, Sri Lanka: Victoria Power-Station. [Hydroelectric power

    Energy Technology Data Exchange (ETDEWEB)

    Creber, B. (Sir Alexander Gibb and Partners (GB))

    1991-04-01

    The Victoria Hydroelectric Power-Station forms part of the Victoria Project on the Mahaweli Ganga in Sri Lanka and it provides the country's largest single power source. The Paper describes the planning, design and construction of the civil engineering works, including problems encountered, and also describes, in outline, the electrical and mechanical works. (Author).

  10. Status Review of Wildlife Mitigation, Columbia Basin Hydroelectric Projects, Columbia River Mainstem Facilities, 1984 Final Report.

    Energy Technology Data Exchange (ETDEWEB)

    Howerton, Jack; Hwang, Diana

    1984-11-01

    This report reviews the status of past, present, and proposed future wildlife planning and mitigation programs at existing hydroelectric projects in the Columbia River Basin. The project evaluations will form the basis for determining any needed remedial measures or additional project analysis. Each hydropower facility report is abstracted separately for inclusion in the Energy Data Base.

  11. 77 FR 47058 - Middle Fork American River Hydroelectric Project Placer County Water Agency; Notice of Draft...

    Science.gov (United States)

    2012-08-07

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Middle Fork American River Hydroelectric Project Placer County Water Agency... comments on the draft environmental impact statement for the Middle Fork American River Project No....

  12. Improving Energy Efficiency of Hydroelectric Power Stations at Irrigation Reservoirs by Wind Power Add-In

    International Nuclear Information System (INIS)

    We demonstrated the possibility of improving the energy efficiency of hydropower stations at irrigation reservoirs based on the energy use of mountain-valley wind flows of surface layers of the atmosphere through the establishment of wind power generation superstructures to the hydroelectric power station that work with them. (author)

  13. Wind as a feasible alternative source for improving the deficiency of hydroelectricity in Tanzania

    International Nuclear Information System (INIS)

    Hydroelectricity is the main source of electricity in Tanzania since about 86% of the electricity generated is from this source. During the dry season there is normally a storage of water in the dams and as such the electricity generated is below the demand. In 2004 a natural gas power plant was inaugurated to alleviate this shortage of electricity. When generating electricity from natural gas, exotic gases are emitted which pollute our environment. This source of energy also cannot regenerate itself within the human life scale. Wind is a renewable source that can be used to supplement the shortage of hydroelectricity in Tanzania. Wind speed data collected from a location with high wind energy potential shows that electricity can be generated from the wind to alleviate this shortage of hydroelectricity. Wind and rainfall data demonstrate further that the windy season, which is from July to November coincide with the dry season in which the use of wind energy in electric generation can help to fill the gap of the hydroelectricity that prevails during that season. The use of wind instead of natural gas will reduce the environmental pollution that results from extracting energy from the fossil fuel source.(Author)

  14. HPP 'Matka 2' the link chain - the hydroelectric object in the river Treska (Macedonia)

    International Nuclear Information System (INIS)

    The paper deals with the project for rational use of the river Treska. The concept of this project is utilization of the hydro-power potential of the River Treska through the subsystem 'Kozjak-Matka' which encompasses realization of three cascade hydroelectric power plants. In the paper the technical data for the accumulations, dams, and equipment' s performances of these HPP's are given

  15. Is Norwegian hydroelectric power to be substituted by Danish coal power and Swedish nuclear energy

    International Nuclear Information System (INIS)

    The article discusses the Norwegian power demand and national power deficit. It has been necessary to have net import of energy from 1996 and the development is described. Energy supply from natural gas sources in addition to hydroelectric power, wind mills and other power sources are discussed as alternatives to imports

  16. Carbon emission as a function of energy generation in hydroelectric reservoirs in Brazilian dry tropical biome

    International Nuclear Information System (INIS)

    Most energy generation globally is fueled by coal and oil, raising concerns about greenhouse gas emissions. Hydroelectric reservoirs are anthropogenic aquatic systems that occur across a wide geographical extent, and, in addition to their importance for energy production, they have the potential to release two important greenhouse gases (GHGs), carbon dioxide and methane. We report results from an extensive study of eight hydroelectric reservoirs located in central and southeastern tropical Brazil. In the Brazilian dry tropical biome reservoirs, emissions (in tons of CO2 Eq. per MW h) varied from 0.01 to 0.55, and decreased with reservoir age. Total emissions were higher in the reservoir lake when compared to the river downstream the dam; however, emissions per unit area, in the first kilometer of the river after the dam, were higher than that in the reservoir. The results showed, despite higher carbon emissions per energy production in the youngest reservoirs, lower emission from hydroelectric reservoirs from the studied region in relation to thermo electrical supply, fueled by coal or fossil fuel. The ratio emission of GHG per MWh produced is an important parameter in evaluating the service provided by hydroelectric reservoir and for energy planning policies. - Highlights: ► Hydroelectric reservoirs construction is growing worldwide. ► The effect of hydropower reservoir in the carbon cycle is dependent on environment characteristics. ► Carbon emissions per energy production are higher in the youngest tropical savannah reservoirs. ► Methane emissions decrease with reservoir age in tropical savannah reservoirs. ► In general, the effect of hydropower in the carbon cycle is lower than other energy sources

  17. Evaluation of melioration area damage on the river Danube caused by the hydroelectric power plant 'Djerdap 1' backwater.

    Science.gov (United States)

    Pajic, P; Andjelic, L; Urosevic, U; Polomcic, D

    2014-01-01

    Construction of the hydroelectric power plant (HPP) 'Djerdap 1' formed a backwater effect on the Danube and its tributaries, which had an inevitable influence on groundwater level, causing it to rise and thus creating additional threats to all melioration areas on more than 300 km of the Danube riversides, as well as on the riversides of its tributaries: the Sava (100 km) and the Tisa (60 km). In this paper, the HPP 'Djerdap 1' backwater effect on some characteristic melioration areas (34 in all) has been analyzed. In most of these areas intensive agricultural activity has always been present. An assessment of agricultural production damage was carried out by complex hydrodynamic calculations (60 calculation profiles) for different backwater regimes, with the aim to precisely quantify the HPP 'Djerdap 1' backwater effect on groundwater piezometric levels. Combining them with complex agroeconomic analyses, the aim is to quantify agricultural production damage and to consider the perspective of melioration area users. This method, which combines two different, but compatible, aspects of the melioration area threat assessment (hydrodynamic and agroeconomic), may present a quality base for further agricultural production threat assessment on all melioration areas on the Danube riversides, with the final aim to consider the economic effects and the importance of its further protection. PMID:25051487

  18. A Wildlife Habitat Protection, Mitigation and Enhancement Plan for Eight Federal Hydroelectric Facilities in the Willamette River Basin: Final Report.

    Energy Technology Data Exchange (ETDEWEB)

    Preston, S.K.

    1987-05-01

    The development and operation of eight federal hydroelectric projects in the Willamette River Basin impacted 30,776 acres of prime wildlife habitat. This study proposes mitigative measures for the losses to wildlife and wildlife habitat resulting from these projects, under the direction of the Columbia River Basin (CRB) Fish and Wildlife Program. The CRB Fish and Wildlife Program was adopted in 1982 by the Northwest Power Planning Council, pursuant to the Northwest Power Planning Act of 1980. The proposed mitigation plan is based on the findings of loss assessments completed in 1985, that used a modified Habitat Evaluation Procedure (HEP) to assess the extent of impact to wildlife and wildlife habitat, with 24 evaluation species. The vegetative structure of the impacted habitat was broken down into three components: big game winter range, riparian habitat and old-growth forest. The mitigation plan proposes implementation of the following, over a period of 20 years: (1) purchase of cut-over timber lands to mitigate, in the long-term, for big game winter range, and portions of the riparian habitat and old-growth forest (approx. 20,000 acres); (2) purchase approximately 4,400 acres of riparian habitat along the Willamette River Greenway; and (3) three options to mitigate for the outstanding old-growth forest losses. Monitoring would be required in the early stages of the 100-year plan. The timber lands would be actively managed for elk and timber revenue could provide O and M costs over the long-term.

  19. 76 FR 22128 - Notice of Intent To Accept Proposals, Select One Lessee, and Contract for Hydroelectric Power...

    Science.gov (United States)

    2011-04-20

    ... cost should include all investment costs such as the cost of studies to determine feasibility, NEPA... the investment; also, the annual operation, maintenance, and replacement expense for the hydropower... hydroelectric power development. The Department will prioritize projects that appropriately balance...

  20. Installation of a Low Flow Unit at the Abiquiu Hydroelectric Facility

    Energy Technology Data Exchange (ETDEWEB)

    Jack Q. Richardson

    2012-06-28

    Final Technical Report for the Recovery Act Project for the Installation of a Low Flow Unit at the Abiquiu Hydroelectric Facility. The Abiquiu hydroelectric facility existed with two each 6.9 MW vertical flow Francis turbine-generators. This project installed a new 3.1 MW horizontal flow low flow turbine-generator. The total plant flow range to capture energy and generate power increased from between 250 and 1,300 cfs to between 75 and 1,550 cfs. Fifty full time equivalent (FTE) construction jobs were created for this project - 50% (or 25 FTE) were credited to ARRA funding due to the ARRA 50% project cost match. The Abiquiu facility has increased capacity, increased efficiency and provides for an improved aquatic environment owing to installed dissolved oxygen capabilities during traditional low flow periods in the Rio Chama. A new powerhouse addition was constructed to house the new turbine-generator equipment.

  1. Legal obstacles and incentives to the development of small scale hydroelectric potential in Illinois

    Energy Technology Data Exchange (ETDEWEB)

    None,

    1980-05-01

    The legal and institutional obstacles to the development of small-scale hydroelectric energy at the state level are described. The Federal government also exercises extensive regulatory authority in the area. The introductory section examines the dual regulatory system from the standpoint of the appropriate legal doctrine, the law of pre-emption, application of the law to the case of the hydroelectric development, and concludes with an inquiry into the practical use of the doctrine by the FERC. The first obstacle which every developer in Illinois must confront is obtaining authority to utilize the river bed, banks, and flowing water at the proposed site. This involves determination of ownership of the stream banks and bed and the manner of obtaining either their title or use; and existing constraints with regard to the use of the water. Illinois follows the riparian theory of water law. Following the detailed discussion of the water law, direct and indirect regulations and financial considerations are discussed.

  2. Legal obstacles and incentives to the development of small scale hydroelectric power in Ohio

    Energy Technology Data Exchange (ETDEWEB)

    None,

    1980-05-01

    The legal and institutional obstacles to the development of small-scale hydroelectric energy at the state level is described. The Federal government also exercises extensive regulatory authority in the area. The introductory section examines the regulatory system from the standpoint of the appropriate legal doctrine, the law of pre-emption, application of the law to the case of hydroelectric development, and concludes with an inquiry into the practical use of the doctrine by the FERC. A developer must obtain title or interest to a streambed from the proper riparian owners. Ohio provides assistance to an electric company in this undertaking by providing it with the power of eminent domain in the event it is unable to reach a purchase agreement with the riparian proprietors. The Ohio Water Law is discussed in detail, followed by discussions: Licensing, Permitting, and Review Procedures; Indirect Considerations; Ohio Public Utilities Commission; Ohio Department of Energy; Incidental Provision; and Financial Considerations.

  3. Does the creation of a boreal hydroelectric reservoir result in a net change in evaporation?

    Science.gov (United States)

    Strachan, Ian B.; Tremblay, Alain; Pelletier, Luc; Tardif, Simon; Turpin, Christian; Nugent, Kelly A.

    2016-09-01

    Estimates of water consumption from hydroelectricity production are hampered by a lack of common methodological approaches. Studies typically use gross evaporation estimates which do not take into account the evaporative water loss from the pre-flooded ecosystems that would occur without the presence of a reservoir. We evaluate the net change in evaporation following the creation of a hydroelectric reservoir located in the Canadian boreal region. We use a direct measurement technique (eddy covariance) over four different ecosystems to evaluate the pre- and post-flood landscape water flux over a five-year period. The net effect of reservoir creation was to increase evaporation over that of the pre-flooded ecosystem. This change was dependent both on management and differences in the timing of the evaporation with nighttime and autumn contributing strongly to the reservoir evaporation. Managed reduction of water level, and thus the evaporating area, reduced the evaporation.

  4. Legal obstacles and incentives to the development of small-scale hydroelectric power in Rhode Island

    Energy Technology Data Exchange (ETDEWEB)

    None,

    1980-05-01

    The legal and institutional obstacles to the development of small-scale hydroelectric energy at the state level are discussed. The Federal government also exercises extensive regulatory authority in the area, and the dual regulatory system from the standpoint of the appropriate legal doctrine, the law of pre-emption, application of the law to the case of hydroelectric development, and an inquiry into the practical use of the doctrine by the FERC is examined. In Rhode Island, any private rights in the flowing waters of a river or stream depend upon ownership of the abutting land. It appears Rhode Island follows the reasonable use theory of riparian law. The Department of Environmental Management is the most significant administrative agency with regard to dam construction, alteration, and operation in the state of Rhode Island.

  5. Evaluation of environmental impacts caused by hydroelectric power plants in native forest areas and mitigation measures

    International Nuclear Information System (INIS)

    The following work has the intention of demonstrating the importance of native forest to the human life, not only through its inherent qualities as something to preserve, but also as a source of great resources, and in particular hydroelectric resource that, by today's necessities are bounded to be explored. The negative effects caused by the implementation of a hydroelectric plant are shown together with the necessity of adoption of measures that would soften the environment impact of it. For the adoption of those measures, many forest studies were proposed in the search for its complete characterization. Each of these studies are duly defined and presented in their general and specific goals. The most adequate methodology is finally recommended. (author). 14 refs

  6. Small-scale hydroelectric power in the Pacific Northwest: new impetus for an old energy source

    Energy Technology Data Exchange (ETDEWEB)

    1980-07-01

    Energy supply is one of the most important issues facing Northwestern legislators today. To meet the challenge, state legislatures must address the development of alternative energy sources. The Small-Scale Hydroelectric Power Policy Project of the National Conference of State Legislators (NCSL) was designed to assist state legislators in looking at the benefits of one alternative, small-scale hydro. Because of the need for state legislative support in the development of small-scale hydroelectric, NCSL, as part of its contract with the Department of Energy, conducted the following conference on small-scale hydro in the Pacific Northwest. The conference was designed to identify state obstacles to development and to explore options for change available to policymakers. A summary of the conference proceedings is presented.

  7. A borrow pit converted into a wetland : a hydroelectric project case study

    Energy Technology Data Exchange (ETDEWEB)

    Lapointe, S.; Vadeboncoeur, C.; Grimard, M. [Hydro-Quebec Equipment, Montreal, PQ (Canada)

    2010-07-01

    As part of an environmental impact study that was carried out on the Peribonka hydroelectricity project, an innovative compensation measure was developed for Hydro-Quebec to meet its commitment to mitigating the impact of the project on sensitive components of the environment. A wetland complex was created in a borrow pit that had been used for the extraction of materials needed for building the Peribonka hydroelectric dam. A wetland encompassing nearly 40 hectares was established within a boreal forest. The wetland project was initiated in 2005 and completed in the fall of 2008. The excavated areas were reshaped to create sections of marshland and shallow water. To make the wetland hospitable to waterfowl and a number of other animal species, a plant revitalization program was also established.

  8. Hydroelectricity and ecological considerations. Falsification of the environmental reality by the opponents of hydropower

    Directory of Open Access Journals (Sweden)

    Andrzej Giziński

    2013-09-01

    Full Text Available Opponents of hydroelectricity claim falsely that hydrotechnical development of the Lower Vistula River constitutes implementation of Edward Gierek’s concept of bringing only environmental damage1. Statements on the negative environmental impact of constructing small hydroelectric power stations (SHPS are equally groundless. Permanent protests against the construction of dams and river damming, regardless of the motivations and will of protesters, increase energy dependence on Russia, and preserves the poor, post-Bierut hydrological situation2. The main fallacy made by hydropower opponents is the alternative treatment of power and environmental purposes. Environmental errors consist in continuous omission of even the most obvious positive ecological effects of constructing river dams and – what is especially reprehensible – inventing non-existent threats, e.g. lethal concentration of toxic heavy metals in deposits of the Włocławek Reservoir or the detrimental impact of warming up water in stage of falls on the fish population below the dam.

  9. Uncovering the Minor Contribution of Land-Cover Change in Upland Forests to the Net Carbon Footprint of a Boreal Hydroelectric Reservoir.

    Science.gov (United States)

    Dessureault, Pierre-Luc; Boucher, Jean-François; Tremblay, Pascal; Bouchard, Sylvie; Villeneuve, Claude

    2015-07-01

    Hydropower in boreal conditions is generally considered the energy source emitting the least greenhouse gas per kilowatt-hour during its life cycle. The purpose of this study was to assess the relative contribution of the land-use change on the modification of the carbon sinks and sources following the flooding of upland forested territories to create the Eastmain-1 hydroelectric reservoir in Quebec's boreal forest using Carbon Budget Model of the Canadian Forest Sector. Results suggest a carbon sink loss after 100 yr of 300,000 ± 100,000 Mg CO equivalents (COe). A wildfire sensitivity analysis revealed that the ecosystem would have acted as a carbon sink as long as carbon flux estimate resulted in emissions of 4 ± 2 g COe kWh as a contribution to the carbon footprint calculation, one-eighth what was obtained in a recent study that used less precise and less sensitive estimates. Consequently, this study significantly reduces the reported net carbon footprint of this reservoir and reveals how negligible the relative contribution of the land-use change in upland forests to the total net carbon footprint of a hydroelectric reservoir in the boreal zone can be. PMID:26437092

  10. The winning cards of small-scale hydroelectric power in the prevention of greenhouse effect

    International Nuclear Information System (INIS)

    Among global environment problems, the risk of global warming is one of the most important. This risk and the associated climatic or socio-economic disorders are in relationships with the growth of greenhouse gases content in the atmosphere, connected with massive fossil fuels uses. This paper presents the advantages of small-scale hydroelectric power, often ignored, which can be a substitution energy source. 14 refs., 4 figs

  11. Distribution of Major and Trace Elements in a Tropical Hydroelectric Reservoir in Sarawak, Malaysia

    OpenAIRE

    Sim, Siong Fong; Ling, Teck Yee; Nyanti, Lee; Ean Lee, Terri Zhuan; Mohd Irwan Lu, Nurul Aida Lu; Bakeh, Tomy

    2014-01-01

    This paper reports the metals content in water, sediment, macroalgae, aquatic plant, and fish of Batang Ai Hydroelectric Reservoir in Sarawak, Malaysia. The samples were acid digested and subjected to atomic absorption spectrometry analysis for Na, K, Mn, Cr, Ni, Zn, Mg, Fe, Sn, Al, Ca, As, Se, and Hg. The total Hg content was analysed on the mercury analyser. Results showed that metals in water, sediment, macroalgae, aquatic plant, and fish are distinguishable, with sediment and biota sample...

  12. Hydroelectric Dams: The First Responses from Giant Otters to a Changing Environment

    OpenAIRE

    Analice Maria Calaça; Odair José Faedo; Fabiano Rodrigues de Melo

    2016-01-01

    The construction of hydroelectric dams has been cited as one of the threats faced by giant otter populations in their distribution areas. However, studies evaluating the impact of reservoirs on these populations are scarce and often restricted to results about the post-filling period. In this study, we present distribution and behavioral data from giant otter populations living in the Teles Pires River and tributaries, located in the municipality of Paranaíta in the State of Mato Grosso, Braz...

  13. Ecological improvements to hydroelectric power plants under EEG. Guidance to environmental verifiers and water rights authorities

    International Nuclear Information System (INIS)

    The use of hydropower as a renewable form of energy is experiencing a renaissance due to the energy transition in Bavaria. The fishery evaluate not uncritically this development, because hydroelectric plants generally normally represent a considerable intervention in water and therefore in the habitat of the fish. In this case it should be noted that just often not even the minimum requirements of ecology are fulfilled at existing plants according to the Federal Water Act.

  14. Generation Planning Methodology Based on Load Factor for Hydroelectric Power Plants

    OpenAIRE

    Süleyman Hakan Sevilgen; Hasan Hüseyin Erdem

    2014-01-01

    Major parameters affecting the generation capacity of hydroelectric plants are resource regime, reservoir geometry, and water head together with flow rate and efficiency. For the same resource regime and flow rate, water head can be altered depending on generation planning. By means of holding water in the reservoir and consequent increase in head can lead to boost power generation. In this paper, a method to compare two different operational styles has been identified; a plant operating with...

  15. Underground Pumped Storage Hydroelectricity using abandoned works (open pits and deep mines)

    OpenAIRE

    Pujades, Estanislao; Willems, Thibault; Bodeux, Sarah; Orban, Philippe; Dassargues, Alain

    2015-01-01

    Pumped Storage Hydroelectricity (PSH) is a good alternative to increase the efficiency of power plants, which cannot regulate the amount of electricity generated according to the demand (wind, solar or even nuclear power plants). PSH plants, which consist in two reservoirs located at different heights (upper and lower), can store energy during low demand periods (pumping water from the lower to the upper reservoir) and generate electricity during the high demand peaks (falling water from the ...

  16. Feasibility study for a hydroelectric installation on the Arno River (Italy)

    OpenAIRE

    Micheli, Lorenzo

    2011-01-01

    Energy need is a primary requirement of our society. Many interests and concerns turn around this matter. It includes policy, economy, environment, etc... Renewable energy is considered to be a good alternative from fossil sources and nuclear power. Renewable sources are known as “green” because of the low impact on the Earth equilibriums. Furthermore they are not exhaustible because they utilize the ecosystem cycles. Hydroelectricity is an established technology. In most of...

  17. Hydrogeological conditions required for Underground Pumping Storage Hydroelectricity (UPSH) in old mines

    OpenAIRE

    Bodeux, Sarah; Pujades, Estanislao; Orban, Philippe; Dassargues, Alain

    2016-01-01

    Renewable energy sources, because of their intermittence, could not afford a stable production and an adequate variability according to the energy demand. Underground Pumped Storage Hydroelectricity (UPSH) using abandoned mine works is an interesting alternative, in flat regions, to store energy during low demand periods by pumping water from an underground mine to an upper reservoir. From the hydrogeological point of view, two considerations can arise for studying the feasibility before ...

  18. Efficiency rents of storage plants in peak-load pricing, ii: hydroelectricity

    OpenAIRE

    Horsley, Anthony; Andrew J Wrobel

    1999-01-01

    Duality methods of linear and convex programming are applied to impute definite marginal values to the fixed inputs of a hydroelectric plant from the operating profit. Our earlier analysis of pumped storage (of energy and other cyclically priced goods) is thus extended to valuation of an external inflow to the reservoir. Given a continuous time-of-use price for electricity, the profit-imputed hydro values are uniquely determined - unlike the corresponding values imputed from fuel savings for ...

  19. Mines as lower reservoir of an UPSH (Underground Pumped Storage Hydroelectricity): groundwater impacts and feasibility

    OpenAIRE

    Bodeux, Sarah; Pujades, Estanislao; Orban, Philippe; Dassargues, Alain

    2016-01-01

    The energy framework is currently characterized by an expanding use of renewable sources. However, their inter- mittence could not afford a stable production according to the energy demand. Pumped Storage Hydroelectricity (PSH) is an efficient possibility to store and release electricity according to the demand needs. Because of the topographic and environmental constraints of classical PSH, new potential suitable sites are rare in countries whose topography is weak or with a high population ...

  20. Legal obstacles and incentives to the development of small scale hydroelectric power in West Virginia

    Energy Technology Data Exchange (ETDEWEB)

    None,

    1980-05-01

    The legal and institutional obstacles to the development of small-scale hydroelectric in West Virginia at the state level are described. The Federal government also exercises extensive regulatory authority in the area. The introductory section examines the dual regulatory system from the standpoint of the appropriate legal doctrine, the law of pre-emption, application of the law to the case of hydroelectric development, and concludes with an inquiry into the practical use of the doctrine by FERC. The development of small-scale hydroelectric energy depends on the selection of a site which will produce sufficient water power capacity to make the project economically attractive to a developer. In West Virginia, the right to use the flowing waters of a stream, creek, or river is appurtenant to the ownership of the lands bordering the watercourse. The lands are known as riparian lands. The water rights are known as riparian rights. Thus, the first obstacle a developer faces involves the acquisition of riparian lands and the subsequent right to the use of the water. The water law in West Virginia is discussed in detail followed by discussions on direct and indirect regulations; continuing obligations; financial considerations; and interstate organizations.

  1. The ethics of hydroelectric power; Energie aus Wasserkraft - ein ethisches Anliegen

    Energy Technology Data Exchange (ETDEWEB)

    Zeller, A.

    2003-07-01

    Hydroelectric power is the most important of all renewable energy sources. About two thirds of Germany's renewable power is generated in hydroelectric power plants. Worldwide, about 2,300 thousand million kWh per annum are generated from hydroelectric power, which is equivalent to 400 nuclear power stations. There are still reserves in the range of 15,000 thousand kWh per annum awaiting exploitation. Even in Germany, only two thirds of the total available potential are used. [German] Die Wasserkraft ist die bedeutendste unter den erneuerbaren Energien. Von ihr stammen ueber zwei Drittel des regenerativ erzeugten Stroms in Deutschland. Weltweit werden derzeit durch die Wasserkraft pro Jahr rund 2300 Milliarden kWh erzeugt; dies entspricht der Energieproduktion von 400 Kernkraftwerken. Riesige Wasserkraftreserven mit rund 15 000 Milliarden kWh/Jahr liegen noch brach. Auch in Deutschland gibt es erhebliche Reserven, denn die Ressource Wasserkraft ist erst zu etwa zwei Dritteln des technisch nutzbaren Potenzials erschlossen. (orig.)

  2. Legal obstacles and incentives to the development of small scale hydroelectric power in New York

    Energy Technology Data Exchange (ETDEWEB)

    None,

    1980-05-01

    The legal and institutional obstacles to the development of small-scale hydroelectric energy at the state level are discussed. The Federal government also exercises extensive regulatory authority in the area, and the dual regulatory system from the standpoint of the appropriate legal doctrine, the law of pre-emption, application of the law to the case of hydroelectric development, and an inquiry into the practical use of the doctrine by the FERC is examined. The first step the small scale hydroelectric developer must take is that of acquiring title to the real property comprising the development site. The real estate parcel must include the requisite interest in the land adjacent to the watercourse, access to the underlying streambed and where needed, the land necessary for an upstream impoundment area. Land acquisition may be effectuated by purchase, lease, or grant by the state. In addition to these methods, New York permits the use of the eminent domain power of the state for public utilities under certain circumstances.

  3. Manual for development of small scale hydroelectric projects by public entities

    Energy Technology Data Exchange (ETDEWEB)

    1981-03-01

    This manual is designed to provide guidance to towns, cities, counties and other political subdivisions which are interested in undertaking or participating in small scale hydroelectric (SSH) development within or close to their territorial boundaries. The manual is primarily directed to those political subdivisions which either own or have access to a site, are interested in exploring the prospects for development of the site and do not have longstanding experience in the electric power development. For purposes of this manual a small scale hydroelectric project is a project of 25 to 30 MWs or less and utilizes an existing dam or structure or utilizes the site characteristics of partially breached dams or structures. As the reader will observe from the discussion that follows, several incentives under federal and state law have been implemented which favor small scale hydroelectric development at existing sites. This manual is designed to assist political subdivisions in taking advantage of these incentives and devising strategies for development. The manual will provide information to political subdivisions as to what to expect in the development process and the kinds of informed questions to ask of paid advisers. The manual, however, cannot be and should not be used as a substitute for competent advice and assistance from experienced lawyers, engineers, accountants and financing experts.

  4. Hydroelectric power plant project on the Coulonge River: Report of inquiry and public hearing

    International Nuclear Information System (INIS)

    A hydroelectric power plant is proposed for the Coulonge River, a tributary of the Ottawa River in Quebec. Water would be taken from the river through a 609 m tunnel to the plant, which would contain two Francis turbines with a total installed power of 16.2 MW operating under a net head of 43 m and a water flow rate of 21.5 m3/s. Other works would be necessary upstream for controlling flow and protecting the intake. Total cost for the two-year construction project is estimated at $28 million and annual revenues are forecast at $6 million. An inquiry and public hearing were held to consider the biophysical, social, economic, and cultural impacts of the proposed hydroelectric project. Results of the hearing are summarized in such areas as legal aspects, environmental quality, water rights, land use, job creation, effects on tourism and recreation, effects on wildlife, water level fluctuations, water quality, and safety. The economic justification for the project is discussed with reference to electricity demand, economic viability, utilization factors, and policies that favor construction of small-scale hydroelectric plants. The project was not found to bring sufficient benefits to the region in which it was to be situated and would not be authorized unless Hydro-Quebec tariff policy with respect to small hydro plants was modified and unless the project sponsor compensates the regional municipality. 13 refs., 11 figs., 4 tabs

  5. 3D integrated modeling approach to geo-engineering objects of hydraulic and hydroelectric projects

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    Aiming at 3D modeling and analyzing problems of hydraulic and hydroelectric en-gineering geology,a complete scheme of solution is presented. The first basis was NURBS-TIN-BRep hybrid data structure. Then,according to the classified thought of the object-oriented technique,the different 3D models of geological and engi-neering objects were realized based on the data structure,including terrain class,strata class,fault class,and limit class;and the modeling mechanism was alterna-tive. Finally,the 3D integrated model was established by Boolean operations be-tween 3D geological objects and engineering objects. On the basis of the 3D model,a series of applied analysis techniques of hydraulic and hydroelectric engineering geology were illustrated. They include the visual modeling of rock-mass quality classification,the arbitrary slicing analysis of the 3D model,the geological analysis of the dam,and underground engineering. They provide powerful theoretical prin-ciples and technical measures for analyzing the geological problems encountered in hydraulic and hydroelectric engineering under complex geological conditions.

  6. 3D integrated modeling approach to geo-engineering objects of hydraulic and hydroelectric projects

    Institute of Scientific and Technical Information of China (English)

    ZHONG DengHua; LI MingChao; LIU Jie

    2007-01-01

    Aiming at 3D modeling and analyzing problems of hydraulic and hydroelectric engineering geology, a complete scheme of solution is presented. The first basis was NURBS-TIN-BRep hybrid data structure. Then, according to the classified thought of the object-oriented technique, the different 3D models of geological and engineering objects were realized based on the data structure, including terrain class,strata class, fault class, and limit class; and the modeling mechanism was alternative. Finally, the 3D integrated model was established by Boolean operations between 3D geological objects and engineering objects. On the basis of the 3D model,a series of applied analysis techniques of hydraulic and hydroelectric engineering geology were illustrated. They include the visual modeling of rock-mass quality classification, the arbitrary slicing analysis of the 3D model, the geological analysis of the dam, and underground engineering. They provide powerful theoretical principles and technical measures for analyzing the geological problems encountered in hydraulic and hydroelectric engineering under complex geological conditions.

  7. Viewpoint – Fifty Years of Hydroelectric Development in Chile: A History of Unlearned Lessons

    Directory of Open Access Journals (Sweden)

    Michael Nelson

    2013-06-01

    Full Text Available The development of hydroelectricity in Chile illustrates a situation where water resources can be both well and badly managed when a private or public utility company, in this case ENDESA, is powerful enough to operate largely outside standard policy and bureaucratic processes. It successfully increased hydroelectric capacity more than fourfold over three decades characterised by periods of significant political instability. This was done without noticeable conflict due to its recognised efficiency and absence of environmental concerns in Chilean policy until the late 1980s. Since that time there has been increasing pressure from international agencies and NGOs to place more emphasis on environmental dimensions in development. The interplay among the diversity of agendas and tactics adopted by the interest groups attempting to influence decision on hydroelectric projects has, in some cases, been counterproductive. ENDESA chose to withhold information and modify EIA procedures as tactics to reduce costs. The NGOs’ single-minded dedication to preclusion of dam proposals tended to distort public debate. The government, presumably due to risk aversion, proved unwilling to take a proactive stance by not specifying and implementing requirements for approval of a dam project, providing a comprehensive policy framework for debate or facilitating dialogue on the issues.

  8. Environmental management in the Hydro-Electric Commission

    International Nuclear Information System (INIS)

    The Tasmanian Hydro Electric Commission (HEC) is a large and diverse organization, providing electricity generation, transmission, distribution and retail services throughout Tasmania. It is a significant manager of Tasmania's land and water resources and, as a consequence, has important environmental responsibilities. This paper outlines the background to conflict with the environmental movement over power generation development projects in south western Tasmania and the development of an environmental policy. As part of the environmental policy, the HEC has prepared environmental reviews, audits and risk assessment and is currently developing and implementing a comprehensive environmental management system. The HEC sees the introduction of the environmental management system as demonstrating a commitment to continuing environmental improvement and in establishing itself as a Tasmanian and national leader in the area of environmental management. 1 tab., 2 figs., 4 refs

  9. Wind energy and Swiss hydroelectric power; Windenergie und schweizerischer Wasserkraftpark

    Energy Technology Data Exchange (ETDEWEB)

    Ott, W.; Baur, M. [Econcept AG, Zuerich (Switzerland); Fritz, W.; Zimmer, Ch.; Feldmann, J. [Consentec GmbH, Aachen (Germany); Haubrich, H.-J.; Dany, G.; Schmoeller, H.; Hartmann, T. [Institut fuer Elektrische Anlagen und Energiewirtschaft RWTH Aachen (IAEW), Aachen (Germany)

    2004-07-01

    This final report for the Swiss Federal Office of Energy (SFOE) presents the results of a study made to analyse the possible changes in the European electricity supply system, in particular with reference to the increasing amount of wind-generated electricity. Also, the role of peak-power and the optimisation potential for Swiss hydropower was examined. The part to be played by Swiss wind power in the future and the government's sustainability strategy is also looked at. The report looks at electricity dealing in the European context and introduces a method of assessment for Swiss hydropower. The report's conclusions and recommendations cover the increasing importance of energy storage in hydropower schemes, the question if grid capacity is sufficient under the new conditions, the market liberalisation question and possible ecological problems that may be encountered.

  10. Dynamic hydrologic economic modeling of tradeoffs in hydroelectric systems

    Science.gov (United States)

    Kern, Jordan D.

    Hydropower producers face a future beset by unprecedented changes in the electric power industry, including the rapid growth of installed wind power capacity and a vastly increased supply of natural gas due to horizontal hydraulic fracturing (or "fracking"). There is also increased concern surrounding the potential for climate change to impact the magnitude and frequency of droughts. These developments may significantly alter the financial landscape for hydropower producers and have important ramifications for the environmental impacts of dams. Incorporating wind energy into electric power systems has the potential to affect price dynamics in electricity markets and, in so doing, alter the short-term financial signals on which dam operators rely to schedule reservoir releases. Chapter 1 of this doctoral dissertation develops an integrated reservoir-power system model for assessing the impact of large scale wind power integration of hydropower resources. Chapter 2 explores how efforts to reduce the carbon footprint of electric power systems by using wind energy to displace fossil fuel-based generation may inadvertently yield further impacts to river ecosystems by disrupting downstream flow patterns. Increased concern about the potential for climate change to alter the frequency and magnitude of droughts has led to growing interest in "index insurance" that compensates hydropower producers when values of an environmental variable (or index), such as reservoir inflows, crosses an agreed upon threshold (e.g., low flow conditions). Chapter 3 demonstrates the need for such index insurance contracts to also account for changes in natural gas prices in order to be cost-effective. Chapter 4 of this dissertation analyzes how recent low natural gas prices (partly attributable to fracking) have reduced the cost of implementing ramp rate restrictions at dams, which help restore sub-daily variability in river flows by limiting the flexibility of dam operators in scheduling

  11. Assessment of Natural Stream Sites for Hydroelectric Dams in the Pacific Northwest Region

    Energy Technology Data Exchange (ETDEWEB)

    Douglas G. Hall; Kristin L. Verdin; Randy D. Lee

    2012-03-01

    This pilot study presents a methodology for modeling project characteristics using a development model of a stream obstructing dam. The model is applied to all individual stream reaches in hydrologic region 17, which encompasses nearly all of Idaho, Oregon, and Washington. Project site characteristics produced by the modeling technique include: capacity potential, principal dam dimensions, number of required auxiliary dams, total extent of the constructed impoundment boundary, and the surface area of the resulting reservoir. Aggregated capacity potential values for the region are presented in capacity categories including total, that at existing dams, within federal and environmentally sensitive exclusion zones, and the balance which is consider available for greenfield development within the limits of the study. Distributions of site characteristics for small hydropower sites are presented and discussed. These sites are screened to identify candidate small hydropower sites and distributions of the site characteristics of this site population are presented and discussed. Recommendations are made for upgrading the methodology and extensions to make the results more accessible and available on a larger scale.

  12. Malaria and water resource development: the case of Gilgel-Gibe hydroelectric dam in Ethiopia

    Directory of Open Access Journals (Sweden)

    Kloos Helmut

    2009-01-01

    Full Text Available Abstract Background Ethiopia plans to increase its electricity power supply by five-fold over the next five years to fulfill the needs of its people and support the economic growth based on large hydropower dams. Building large dams for hydropower generation may increase the transmission of malaria since they transform ecosystems and create new vector breeding habitats. The aim of this study was to assess the effects of Gilgel-Gibe hydroelectric dam in Ethiopia on malaria transmission and changing levels of prevalence in children. Methods A cross-sectional, community-based study was carried out between October and December 2005 in Jimma Zone, south-western Ethiopia, among children under 10 years of age living in three 'at-risk' villages (within 3 km from dam and three 'control' villages (5 to 8 km from dam. The man-made Gilgel-Gibe dam is operating since 2004. Households with children less than 10 years of age were selected and children from the selected households were sampled from all the six villages. This included 1,081 children from 'at-risk' villages and 774 children from 'control' villages. Blood samples collected from children using finger prick were examined microscopically to determine malaria prevalence, density of parasitaemia and identify malarial parasite species. Results Overall 1,855 children (905 girls and 950 boys were surveyed. A total of 194 (10.5% children were positive for malaria, of which, 117 (60.3% for Plasmodium vivax, 76 (39.2% for Plasmodium falciparum and one (0.5% for both P. vivax and P. falciparum. A multivariate design-based analysis indicated that, while controlling for age, sex and time of data collection, children who resided in 'at-risk' villages close to the dam were more likely to have P. vivax infection than children who resided farther away (odds ratio (OR = 1.63, 95% CI = 1.15, 2.32 and showed a higher OR to have P. falciparum infection than children who resided in 'control' villages, but this was not

  13. Feasibility of determination of low-head hydroelectric power development at existing sites. Big Blue River Co-dependent Hydroelectric Development: feasibility study

    Energy Technology Data Exchange (ETDEWEB)

    Wacker, H. Steve; Feuerberg, Stan; Lawrence, John D.; Pal, Parimal C.; Trick, Dr., William T.

    1979-03-01

    The technical, economic, environmental, safety, and financial aspects of redeveloping 7 dam sites in Nebraska for hydroelectric power generation were studied. The Big Blue River Co-dependent Hydroelectric Development was found to be a technically feasible concept, for both redevelopment and in some cases rehabilitation of seven existing sites. The proposed redevelopment project will include seven installations with a recommended nominally rated redeveloped capacity of 3920 kW ranging from 120 kW at the northernmost site in Seward County to 1500 kW at Barneston. The average annual gross generation expected from the seven redeveloped sites totals 11,555,000 kWh. It is estimated that the total cost of redevelopment of these seven sites will be $14,090,000 at 1979 price levels, providing power at an average levelized cost of about 5.3 cents per kWh based on 7% cost of money, a mid-1983 commissioning date, and allowing for funds during construction and cost escalation over a 30-year period. Rehabilitation of original installations at Crete, Dewitt, Blue Springs and Barneston is technically feasible for a total installed capacity of 1415 kW with annual average gross generation of 6,675,000 kWh. The total cost of this rehabilitation is estimated as $3,372,000 at 1979 price levels, or about 2.4 cents per kWh, levelized on a similar basis. Rehabilitation of the Barneston site alone for an installed capacity of 760 kW and annual generation of 3,581,000 kWh is both technically and economically feasible. The total estimated cost of this alternative is $668,000, providing power at a cost of about 1.9 cents per kWh at 1979 price levels. The benefit-cost ratio for Barneston rehabilitation is estimated as 1.23.

  14. Ex post Evaluation of the Impact of the Environmental Mitigation Measures for the Porce II Hydroelectric Power Plant Project Title: Evaluación ex-post del impacto de las medidas de mitigación ambiental en el Proyecto Hidroeléctrico Porce II

    OpenAIRE

    Verónica González

    2011-01-01

    This evaluation helps to address the need in literature on Environmental Impact Assessment during the monitoring of operations and ex post evaluations. It helps to develop innovative methodologies for ex post environmental assessments for both the IDB and borrowers. The evaluation uses environmental monitoring data for infrastructure projects through an analysis of indicators and their long-term trends. In general, the evaluation results indicate that the Porce II Hydroelectric project's miti...

  15. Summary of the New England conference on legal and institutional incentives to small-scale hydroelectric development (Boston Massachusetts, January 30-31, 1979)

    Energy Technology Data Exchange (ETDEWEB)

    1980-05-01

    The New England Conference on Legal and Institutional Incentives to Small Scale Hydroelectric Development examined the legal and institutional problems confronting small-scale hydroelectric potential of the northeast. Representatives from DOE, FERC, state legislatures, state public service commissions, private developers, and environmental groups attempted to evaluate the state of hydroelectric development in New England. The meeting began with an introductory panel followed by workshops addressing four topics: Federal regulatory systems, state regulatory systems, the economics of small-scale hydroelectric development, and systems dynamics and the systems dynamics model. Comments by the Honorable Georgiana H. Sheldon, FERC, are presented.

  16. The political economy of Canadian hydro-electricity : between old provincial hydros and neoliberal regional energy regimes

    International Nuclear Information System (INIS)

    In economic terms, hydro-electricity is considered as a quasi-staple, as it prone to the classic staples problem of excess capacity. However, neither water nor hydroelectricity in Canada is produced primarily for export markets. Hydroelectric systems are often thought of as politicized monopolies. This paper discussed changes that have occurred in hydroelectric organizations over time, as they have been governed by a formative mixed regime; postwar provincial hydro systems; a megaprojects regime; and an emerging sustainability regionalization regime. The origins of electricity generation and transmission in Canada were discussed, as well as the ecological footprint of large mega-projects on rivers. The development of provincial hydro monopolies during the mid- to late- twentieth century was also outlined, as well as the sustainability and regionalization regime that developed after 1990. During the mature staples period of the mid-century, rents in hydro-electric organizations were distributed through cheap rates to subsidize and facilitate the development of mass production and mass consumption. However, post-staples consumption has now replaced mass consumption, and demand side management is replacing earlier cheap power policies. Nonetheless, the lack of systematic integration of networks has led to inefficiencies. Provincial grids are now being integrated into interconnected North American regional networks regulated by the United States. It was concluded that the Canadian electricity regime is increasingly influenced by the the supranational role that the United States is playing in structuring markets. 83 refs

  17. A report on the fisheries resources of the lower Nelson River and the impacts of hydroelectric development, 1988 data

    International Nuclear Information System (INIS)

    Fisheries studies on the lower Nelson River (Manitoba) system have had the goals of gaining an understanding of the fisheries resources present, assessing current and potential impacts of hydroelectric developments, and investigating enhancement or mitigative options. In 1988, a resource inventory of McMillan and 12-Mile Creeks was conducted to increase understanding of brook trout stocks in the Limestone River system. Results indicate that both streams contain self-sustaining populations. Baseline data collection in the Conawapa Forebay of the Nelson River was initiated in 1988. Inventories of fish populations were conducted, focusing on lake sturgeon. Three long-term monitoring projects were continued in 1988, investigating the populations of spawning brook trout, larval brook trout, and anadromy in brook trout. Four major tributaries to the Nelson River were classified on the basis of physical and chemical characteristics in an attempt to understand brook trout distribution patterns. Ten sturgeon were captured in Angling Lake in 1988 and fitted with radio tags to assess the importance of the Angling Lake-Angling River system to Nelson River lake sturgeon. To investigate the feasibility of enhancing brook trout populations in the Nelson River system, baskets of eggs were planted in previously identified spawning areas in three creeks in 1988. The eggs developed and hatched only in CN Creek. The potential for rehabilitating the Kettle River brook trout population by transfer of fish from other rivers was also investigated in 1988. Radio-tagged fish remained in the Kettle River-Long Spruce system throughout the life of the tags and appear to have found suitable summer and winter habitat. 60 refs., 76 figs., 38 tabs

  18. Risk Analysis Simulation Model of Economic Evaluation in Hydroelectric Engineering Project

    Directory of Open Access Journals (Sweden)

    Li Cunbin

    2012-07-01

    Full Text Available In this study, we propose a risk analysis simulation model for economic evaluation of hydroelectric engineering project. This model takes annual energy outputs as risk elements. It submits to Pearson-III distribution similar with the annual runoff. Take data from three typical years to estimate the distribution parameters and then yearly benefits can be simulated in given period. By discounting all the annual benefits to their present values and summing them up, the total benefit present value is worked out. Simulating the process for a large number of times, the probability distribution is obtained. And the Net Present Value (NPV distribution can be figured out as well.

  19. Determination of methane emissions in three hydroelectric dams in Costa Rica

    OpenAIRE

    Jorge Herrera; José F. Rojas; Susana Rodríguez; Antonieta Rojas; Víctor H. Beita

    2013-01-01

    The emission fluxes of methane (CH4) across air–water interface were measured in three hydroelectric dams in Costa Rica (Brasil, Nuestro Amo and Cote Lake) during three years cycle (2009-2011), using the floating static chamber technique. Samples were taken during one week, both day and night time, through four campaigns per year. For the methane flux determination the water surface was divided in a 4x4 grid equally spaced. During this period, CH4 fluxes showed average values that ranged from...

  20. Management Strategy for Hydroelectric Project Toro 2: Knowing and enhancing natural resources sustainably

    Directory of Open Access Journals (Sweden)

    José Pereira Chaves

    2014-01-01

    Full Text Available The aim of this article is to understand and sustainably enhance the biological and ecological resources of the Hydroelectric Project of Toro 2, thus; a research was carried out to inventory the presence of birds, mammals and plants, in order to know if the site qualifies as a biological tourist attraction, as well as to know the opinion of local people. It is proposed the sustainable uses of natural resources, through a strategy of use, management and conservation of the ecosystems.

  1. A model of sturgeon distribution under a dam of a hydro-electric power plant

    International Nuclear Information System (INIS)

    This article is dedicated to the question of passage of sturgeon through a dam of a hydro-electric power plant (HPP) during spawning migrations. A model of distribution of water velocity in the tail water of HPP was constructed. On the basis of this model a model of sturgeon distribution under a dam of HPP was created. The latter model was analyzed numerically in conformity with the largest HPP on the Volga river-Volgograd's HPP (Russia). The results of analysis allowed estimation of sturgeon passage from the tail water to the head race. Measures for increase of effectiveness of this process were elaborated

  2. Environmental impact statement for the proposed Great Whale River Hydroelectric Project

    International Nuclear Information System (INIS)

    Guidelines are presented on the preparation of the environmental impact statement for the Great Whale hydroelectric project by Hydro-Quebec. The statement must include a project justification, description of the biophysical and social environments, a project description, and must address project impacts, mitigative and compensatory measures, environmental surveillance, monitoring, and long-term management programs. Appendices include a memorandum of understanding, list of members of the review bodies, list of briefs submitted at the public scoping hearings, and a list of public comments on the draft guidelines. 17 figs

  3. Sustainable energy development as an integral part of hydroelectric business management

    International Nuclear Information System (INIS)

    Elements of Ontario Hydro's strategy for sustainable energy development were discussed, highlighting key developments in the business management practices in Ontario Hydro's Hydroelectric Business Unit. Sustainable development considerations are now integral part of any business case analysis; management of the environment also has been integrated into the Utilities' business management process. Several environmental management practices intended to enhance sustainability have been introduced, including a full-fledged environmental management system based on ISO 14001 standards. Energy efficiency opportunities are aggressively pursued, including turbine upgrades, and energy efficient lighting. Experience to date indicates that business performance and progress towards sustainable energy development need not be mutually exclusive

  4. Legal obstacles and incentives to the development of small scale hydroelectric potential in Michigan

    Energy Technology Data Exchange (ETDEWEB)

    None,

    1980-05-01

    The legal and institutional obstacles to the development of small-scale hydroelectric energy at the state level is described. The Federal government also exercises extensive regulatory authority in the area. The first obstacle which any developer must confront in Michigan is obtaining the authority to utilize the river bed, banks, and flowing water at a proposed dam site. This involves a determination of ownership of the stream banks and bed, and the manner of obtaining either their title or use; and existing constraints with regard to the use of the water. Michigan follows the riparian theory of water law. The direct regulation; indirect regulation; public utilities regulation; financing; and taxation are discussed.

  5. Hydroelectric plants: economical and ecological consequences of equipment and exploitation variants

    International Nuclear Information System (INIS)

    The increasing number of renewal demands for hydroelectric plants authorizations has raised the question of the pertinency and efficiency of the equipments used. Choices are rarely clearly justified by the petitioners. After reminding the reasons and consequences of a given choice and equipment, the necessary steps of an authorization demand are illustrated by a concrete case. It shows that some equipment-management combinations can lead to a more satisfying economical and ecological balance-sheet than those generally proposed. The popularization of computer use allows the examining services to dispose of clear and pedagogical elements to select the regular choices. (J.S.). 10 refs., 11 figs., 2 tabs

  6. Status Review of Wildlife Mitigation, Columbia Basin Hydroelectric Projects, Washington Facilities (Intrastate) Final Report.

    Energy Technology Data Exchange (ETDEWEB)

    Howerton, Jack

    1984-11-01

    This report was prepared for BPA in fulfillment of section 1004 (b)(1) of the Pacific Northwest Electric Power Planning and Conservation Act of 1980, to review the status of past, present, and proposed future wildlife planning and mitigation program at existing hydroelectric projects in the Columbia River Basin. The project evaluations will form the basis for determining any needed remedial measures or additional project analysis. Projects addressed are: Merwin Dam; Swift Project; Yale Project; Cowlitz River; Boundary Dam; Box Canyon Dam; Lake Chelan; Condit Project; Enloe Project; Spokane River; Tumwater and Dryden Dam; Yakima; and Naches Project.

  7. 200 MW hydroelectric generator stator surface temperature monitoring using a DTS system

    Science.gov (United States)

    Mezzadri, Felipe; Bazzo, João. P.; Martelli, Cicero; Silva, Erlon V.; Cardozo da Silva, Jean Carlos

    2015-09-01

    A distributed temperature sensing (DTS) system is used to monitor the surface temperature of a high power hydroelectric generator. Two sensing fibers were installed; one is bare fiber whilst the other is jacketed with a Teflon® protection, in two distinct configurations: first, they were fixed parallel to the stator bars; secondly, they were wrapped around the stator surface. The fibers were embedded on the stator surface by using an electrically insulating resin which does not interfere with the generator operation. This technique can be used as a predictive maintenance tool.

  8. Ecological effects of Arges River hydroelectric systems. The minimum flow problem

    International Nuclear Information System (INIS)

    The paper presents general observations of the ecological status of riverside areas, on Arges River between Capataneni and Bascov villages. These are affected by the presence of an important hydroelectric power system. The main problem generating negative impact on the environment is non-observance of Waters' Law no.107/1996 with reference to minimum flow. The minimum flow is defined as the flow through the cross section of a watercourse which ensures the living conditions for the existent aquatic ecosystems. It should be taken into account in order to protect the aquatic ecosystems. A methodology regarding the determination of minimum flow is proposed. (author)

  9. URiNER iNKONTiNANS SORUNU, EPiDEMiYOLOJiSi VE iNKONTiNANSLI HASTANIN TANI AMACIYLA DEGERLENDiRiLMESi

    OpenAIRE

    KIZILKAYA BEJİ, Doç.Dr.Nezihe

    2015-01-01

    SUMMARYThe Problem Of Urinary Incontinance, It's Epidemiology And Assessment Of TheIncontinent Patient For The Diagnosis:      Urinary incontinence is defined as the involuntary loss of urine which is objectively demostrable and a social or hygienic problem. It can affect people of all ages, across the lifespan. Although prevalence increases with age, incontinence is also a problem for younger people, especially women. Incontinence can have adverse physical, psychological, social and economic...

  10. Standardization of electric projects of small hydroelectric power plants; Padronizacao de projetos eletricos de pequenas centrais hidreletricas

    Energy Technology Data Exchange (ETDEWEB)

    Lima, Roberth dos Santos

    2002-07-01

    This work presents a standardizing proposal for Electrical Projects of small hydroelectric central and it has as objective to optimize some solutions for the most cases, considering the great diversity of options. The development of the dissertation is the result of several real cases of projects of hydroelectric centrals. Besides the projects, several bibliographies about the case which is being studied were researched, taking into consideration the entire proposal presented to the respective authors and, finally, as synthesis to all observations made in that study, the presentation of an optimized solution for the job of the electrical components and a proposal for the estimate of costs of those components. The conclusions of this work present a favorable result because they offer an initial proposal for the standardizing of information considered extremely important for the carrying out of a project of hydroelectric central. (author)

  11. Research on the volute pressure in start-up process of hydroelectric generating units

    Science.gov (United States)

    Yang, W. J.; Yang, J. D.

    2012-11-01

    The dynamic quality in start-up process of hydroelectric generating units has a direct influence on power system stability and economic benefits of hydropower stations. However, the existing researches just focus on the rapidity and stability of unit rotation speed, never analyze the volute pressure or other control conditions, and ignore the security of unit operation. This paper strongly emphasizes that the volute pressure should be regarded as an important evaluation index in analysis of start-up process. By using a nonlinear mathematical model which takes into account the turbine characteristics and elasticity of the pipeline, this article calculates and analyzes the start-up transient process of hydroelectric generating units to seek the change law of volute pressure, and the engineering example is a hydropower station with the surge chamber and long draw water tunnel. To discuss the influence factors of the volute pressure, this paper also makes sensitivity analysis of start-up strategy, start-up working conditions and characteristics of pipeline. Meanwhile, according to various factors, this paper provides some suggestions to guarantee the rapidity and security of the start-up process simultaneously.

  12. Long-term threats to Canada's James Bay from hydroelectric development

    International Nuclear Information System (INIS)

    The steep gradients on the Quebec side of James Bay make the area attractive for hydroelectric development. Most of the major rivers in this area will eventually be affected by the development plans of Hydro-Quebec. Environmental studies maintain that changes to the bay from exising hydroelectric developments have been fewer than expected and that many physical parameters in the bay are insensitive to river flows. However, future cumulative impacts may be more negative. The Canadian environmental review process for James Bay hydro developments has not considered either cumulative impacts or alternatives to the projects, including the alternative of not building them at all. The weakness of the environmental review process has serious implications for James Bay. Projects receiving federal funding or on federal land are subject to review, but these conditions do not apply to Hydro-Quebec's projects. Nevertheless, the National Energy Board (NEB) has jurisdiction over electrical exports, and has historically considered environmental impacts of generating plants and transmission lines related to electrical exports when approvals for such exports are sought. Public pressure from environmental organizations has been mounting to reevaluate James Bay plans in light of possible cumulative impacts. In addition, there are possibilities of using US legislation on electricity imports to press for environmental review of the impact of electricity exports from James Bay. 10 refs

  13. Legal obstacles and incentives to the development of small scale hydroelectric power in Delaware

    Energy Technology Data Exchange (ETDEWEB)

    None,

    1980-05-01

    The legal and institutional obstacles to the development of small-scale hydroelectric energy at the state level are discussed. The Federal government also exercises extensive regulatory authority in the area, and the dual regulatory system from the standpoint of the appropriate legal doctrine, the law of pre-emption, application of the law to the case of hydroelectric development, and an inquiry into the practical use of the doctrine by the FERC is examined. In Delaware, a watercourse is not to be confused with surface water. Each gives rise to certain riparian rights, but the law makes certain distinctions between the two. The presence of both surface waters and watercourses give rise to private and public rights related to the presence of the water. Some of these rights are vested in riparian owners. Recent Delaware case law has described the riparian owner as one who owns land on the bank of a river, or who is owner of land along, bordering upon, bounded by, fronting upon, abutting, or adjacent and contiguous to and in contact with a river. But, ownership of the bank does not give the riparian ownership of the water. Some law cases are cited to discuss the laws in Delaware.

  14. Legal obstacles and incentives to the development of small scale hydroelectric power in New Hampshire

    Energy Technology Data Exchange (ETDEWEB)

    None,

    1980-05-01

    The legal and institutional obstacles to the development of small-scale hydroelectric energy at the state level are described. The Federal government also exercises extensive regulatory authority in the area and the dual regulatory system from the standpoint of the appropriate legal doctrine, the law of pre-emption, application of the law to the case of hydroelectric development, and an inquiry into the practical use of the doctrine by the FERC is examined. The first step any developer must take is that of acquiring the real estate parcel. The step involves acquisition in some manner of both river banks, the river bed, and where necessary the land needed for the upstream impoundment area. The developer must acquire the river banks to be considered a riparian owner. Classification as a riparian is important for only a use of water by a riparian owner is deemed a reasonable use and hence legal. Apart from acquisition by sale, lease, or gift, New Hampshire law permits a number of other methods. In part use of these methods will depend on whether the developer is the state, a municipality, a private corporation, or a public utility. Provided the developer avails himself of the five (5) megawatts exemption, his main regulatory agency will be the Water Resources Board. However, the state is not free from the problems of legal uncertainty inherent in determinations of reasonableness.

  15. The Use of Advanced Hydroelectric Turbines to Improve Water Quality and Fish Populations

    International Nuclear Information System (INIS)

    Hydroelectric power contributes about 10 percent of the electrical energy generated in the United States, and nearly 20 percent of the worlds electrical energy. It is a renewable energy source that can contribute significantly to reduction of greenhouse gases by offsetting conventional carbon-based electricity generation. However, rather than growing in importance, hydroelectric generation has actually declined in recent years, often as a consequence of environmental concerns centering around (1) restriction of upstream and downstream fish passage by the dam, and (2) alteration of water quality and river flows by the impoundment. The Advanced Hydropower Turbine System (AHTS) Program of the U.S. Department of Energy is developing turbine technology which would help to maximize global hydropower resources while minimizing adverse environmental effects. Major technical goals for the Program are (1) the reduction of mortality among turbine-passed fish to 2 percent or less, compared to current levels ranging up to 30 percent or greater; and (2) development of aerating turbines that would ensure that water discharged from reservoirs has a dissolved oxygen concentration of at least 6 mg/L. These advanced, environmentally friendly turbines would be suitable both for new hydropower installations and for retrofitting at existing dams. Several new turbine designs that have been developed in the initial phases of the AHTS program are described

  16. A model for the data extrapolation of greenhouse gas emissions in the Brazilian hydroelectric system

    Science.gov (United States)

    Pinguelli Rosa, Luiz; Aurélio dos Santos, Marco; Gesteira, Claudio; Elias Xavier, Adilson

    2016-06-01

    Hydropower reservoirs are artificial water systems and comprise a small proportion of the Earth’s continental territory. However, they play an important role in the aquatic biogeochemistry and may affect the environment negatively. Since the 90s, as a result of research on organic matter decay in manmade flooded areas, some reports have associated greenhouse gas emissions with dam construction. Pioneering work carried out in the early period challenged the view that hydroelectric plants generate completely clean energy. Those estimates suggested that GHG emissions into the atmosphere from some hydroelectric dams may be significant when measured per unit of energy generated and should be compared to GHG emissions from fossil fuels used for power generation. The contribution to global warming of greenhouse gases emitted by hydropower reservoirs is currently the subject of various international discussions and debates. One of the most controversial issues is the extrapolation of data from different sites. In this study, the extrapolation from a site sample where measurements were made to the complete set of 251 reservoirs in Brazil, comprising a total flooded area of 32 485 square kilometers, was derived from the theory of self-organized criticality. We employed a power law for its statistical representation. The present article reviews the data generated at that time in order to demonstrate how, with the help of mathematical tools, we can extrapolate values from one reservoir to another without compromising the reliability of the results.

  17. Halting hydro: A review of the socio-technical barriers to hydroelectric power plants in Nepal

    International Nuclear Information System (INIS)

    Nepal has 83,000 MW (megawatts) of exploitable hydropower resources. Yet the country has tapped less than 650 MW of this potential and hydroelectricity meets less than 1% of total national energy consumption. This article explores why. Using a mixed methods approach consisting of semi-structured research interviews, site visits, and a literature review, it explores the various factors impeding the use of small-scale and medium-sized hydroelectric power stations in Nepal. It begins by laying out the research methods for the study along with a concept known as the social science systems approach, or socio-technical systems theory. This theory supposes that the barriers to any technology from reaching commercialization are simultaneously social, consisting of values, attitudes, regulations, and price signals, as well as technical. The study then evaluates a 'seamless web' of these types of barriers facing hydropower systems in Nepal. It concludes by offering lessons for policymakers and scholars concerned about Nepal as well as energy policy more generally. -- Highlights: → Nepal has 83,000 MW (megawatts) of exploitable hydropower resources, but has tapped less than 650 MW. → Some barriers to hydro in Nepal are social, consisting of values, attitudes, regulations, and price signals. → Other barriers are technical, involving challenges related to hydrology, dam design, and maintenance.

  18. National hydroelectric power resources study. Preliminary inventory of hydropower resources. Volume 6. Northeast region

    Energy Technology Data Exchange (ETDEWEB)

    None

    1979-07-01

    In the Northeast region, the physical potential for all sites exceeds 33,000 MW of capacity with an estimated average annual energy of some 153,000 GWH. By comparison, the available data represent about 6% of the total capacity and 11% of the hydroelectric energy potential estimated for the entire US. Of the total capacity estimated for the region, 6100 MW has been installed. The remainder (27,200 MW, excluding the undeveloped capacity in the New England States) is the maximum which could be developed by upgrading and expanding existing projects (18,700 MW), and by installing new hydroelectric power capacity at all potentially feasible, undeveloped sites (8500 MW). Small-scale facilities account for about 15% of the region's total installed capacity, but another 1800 MW could be added to these and other small water-resource projects. In addition, 500 MW could be installed at potentially feasible, undeveloped small-scale sites. The small-scale resource varies considerably, with the states of New York, Maine, and New Hampshire having the largest potential for incremental development at existing projects in the Northeast region. West Virginia, Maryland, Delaware, New Jersey, Pennsylvania, New York, Connecticut, Massachusetts, Rhode Island, New Hampshire, Vermont, and Maine comprise the Northeast region.

  19. National hydroelectric power resources study. Preliminary inventory of hydropower resources. Volume 4. Lake Central region

    Energy Technology Data Exchange (ETDEWEB)

    None

    1979-07-01

    The estimates of existing, incremental and the undeveloped hydropower potential for all states in the various regions of the country are presented. In the Lake Central region, the maximum physical potential for all sites exceeds 26,000 MW with an estimated average annual energy of more than 75,000 GWH. By comparison, these values represent about 5% of both the total potential capacity and hydroelectric energy estimated for the entire US. Of the total capacity estimated for the region, 2600 MW has been installed. The remainder (23,600 MW) is the maximum which could be developed by upgrading and expanding existing projects (15,800 MW), and by installing new hydroelectric power capacity at all potentially feasible, undeveloped sites (7800 MW). Small-scale facilities account for some 24% of the region's total installed capacity, but another 900 MW could be added to these and other small water-resource projects. In addition, 900 MW could be installed at potentially feasible, undeveloped small-scale sites. The small-scale resource varies considerably, with the states of Michigan and Wisconsin having the largest potential for incremental development at existing projects in the Lake Central region. This Lake Central region is composed of Minnesota, Wisconsin, Michigan, Ohio, Indiana, Illinois, Kentucky, Missouri, and Iowa.

  20. National hydroelectric power resources study. Preliminary inventory of hydropower resources. Volume 2. Pacific Southwest region

    Energy Technology Data Exchange (ETDEWEB)

    None

    1979-07-01

    The estimates of existing, incremental, and the undeveloped hydropower potential for all states in the various regions of the country are presented. In the Pacific Southwest region, the maximum physical potential for all sites exceeds 33,000 MW of capacity with an estimated average annual energy greater than 85,000 GWH. By comparison, these values represent about 6% of the total potential capacity and hydroelectric energy generation estimated for the entire US. Of the total capacity estimated for the region, 9900 MW has been installed. The remainder (23,200 MW) is the maximum which could be developed by upgrading and expanding existing projects (6000 MW) and by installing new hydroelectric power capacity at all potentially feasible, undeveloped sites (17,200 MW). Small-scale facilities account for less than 4% of the region's total installed capacity, but another 600 MW could be added to these and other small water resource projects. In addition, 600 MW could be installed at potentially feasible, undeveloped small-scale sites. The small-scale resource varies considerably, with the states of California and Utah having the largest potential for incremental development at existing projects in the Pacific Southwest region. States comprising the Southwest are Arizona, California, Hawaii, Nevada, and Utah.

  1. Hydroelectric development project of the Magpie dam on the Magpie River: Investigation and public hearing report

    International Nuclear Information System (INIS)

    Public hearings were held by Quebec's Bureau d'audiences publiques sur l'environnement (BAPE) concerning a proposed hydroelectric development project on the Magpie River in Quebec's Minganie Region. The proposed hydroelectric power plant is to be developed and managed by Hydromega Services Inc. and constructed by Aecon Group Ltd. The project consists of reconstructing a power plant and dam at an existing site that was constructed in 1961 but which has been decommissioned since 1989. The installed capacity of the proposed power plant is 40.6 MW. The drop height for the dam is 21.25 metres. The issues that were addressed during the hearings included the opinions and suggestion of the participants regarding energy provisions, regional development and ecological protection. One of the main concerns facing this project is the loss of spectacular rapids currently used by rafters. The Commission noted that the rapids cannot be saved without significant modification to the design of the project. However, the flooding associated with the project would facilitate fishermen, canoeists and kayakers, thereby preserving the recreational and tourism attributes of the Magpie River. The Commission also noted that the local economic repercussions of the project would benefit the population of the Minganie Region which has a high unemployment rate. Any ecological impacts may be controlled by relevant attenuation measures and follow-up. It was concluded that the proposed project could contribute modestly to meeting the anticipated growth in energy demand in Quebec. refs., figs

  2. Advanced, Environmentally Friendly Hydroelectric Turbines for the Restoration of Fish and Water Quality

    International Nuclear Information System (INIS)

    Hydroelectric power contributes about 10 percent of the electrical energy generated in the United States, and nearly 20 percent of the worlds electrical energy. The contribution of hydroelectric generation has declined in recent years, often as a consequence of environmental concerns centering around (1) restriction of upstream and downstream fish passage by the dam, and (2) alteration of water quality and river flows by the impoundment. The Advanced Hydropower Turbine System (AHTS) Program of the U.S. Department of Energy is developing turbine technology which would help to maximize global hydropower resources while minimizing adverse environmental effects. Major technical goals for the Program are (1) the reduction of mortality among turbine-passed fish to 2 percent or less, compared to current levels ranging up to 30 percent or greater; and (2) development of aerating turbines that would ensure that water discharged from reservoirs has a dissolved oxygen concentration of at least 6 mg/L. These advanced, environmentally friendly turbines would be suitable both for new hydropower installations and for retrofitting at existing dams. Several new turbine designs that have been he AHTS program are described

  3. Research on the volute pressure in start-up process of hydroelectric generating units

    International Nuclear Information System (INIS)

    The dynamic quality in start-up process of hydroelectric generating units has a direct influence on power system stability and economic benefits of hydropower stations. However, the existing researches just focus on the rapidity and stability of unit rotation speed, never analyze the volute pressure or other control conditions, and ignore the security of unit operation. This paper strongly emphasizes that the volute pressure should be regarded as an important evaluation index in analysis of start-up process. By using a nonlinear mathematical model which takes into account the turbine characteristics and elasticity of the pipeline, this article calculates and analyzes the start-up transient process of hydroelectric generating units to seek the change law of volute pressure, and the engineering example is a hydropower station with the surge chamber and long draw water tunnel. To discuss the influence factors of the volute pressure, this paper also makes sensitivity analysis of start-up strategy, start-up working conditions and characteristics of pipeline. Meanwhile, according to various factors, this paper provides some suggestions to guarantee the rapidity and security of the start-up process simultaneously.

  4. Report on the renewal of the hydro-electric concessions; Rapport sur le renouvellement des concessions hydroelectriques

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2006-11-15

    The administrative procedures of the renewable of the hydro-electric concessions in France is a real problem, leading to too long time of the case files examination. This mission aimed to identify the technical and financial criteria on which the decision maker will base his choice to give the concessions renewal. This report exposes the evaluation and the recommendations of the mission. The first part establishes an evaluation of the situation of the hydro-electric concessions and the today renewal procedures. The second part presents a analysis of this situation and the recommendations. The last part brings the conclusions. (A.L.B.)

  5. Investigation of the planktonic organism state in the upper and lower pools of hydroelectric stations on the Vuoksa River

    International Nuclear Information System (INIS)

    The main branch of the upstream stretch of the Vuoksa River was studied in order to determine the effects of the Svetogorskaya and Lesogorskaya hydroelectric stations on plankton (phyto-, zoo-, and bacterioplankton). The average loss of plankton (phyto- and zooplankton) due to passage through the hydroelectric station turbine does not exceed 35% and depends on the season of the year. No cavitation effect on bacterioplankton was found. It was revealed that a far more negative effect on the Vuoksa River plankton, particularly zoo- and bacterioplankton, was due to pollution of the river water with industrial sewage from the pulp-and-paper mill located downstream from the Svetogorskaya Hydropower Plant

  6. The net GHG (CO2, CH4 and N2O) footprint of a newly impounded subtropical hydroelectric reservoir: Nam Theun 2

    Science.gov (United States)

    Deshmukh, Chandrashekhar; Guérin, Frédéric; Delon, Claire; Pighini, Sylvie; Vongkhamsao, Axay; Descloux, Stéphane; Chanudet, Vincent; Tardif, Raphael; Godon, Arnaud; Guédant, Pierre; Galy-Lacaux, Corinne; Zouiten, Cyril; Oliva, Priscia; Audry, Stéphane; Serça, Dominique

    2013-04-01

    There is a rising concern over the contribution of hydroelectric reservoirs to global anthropogenic greenhouse gases (GHGs) emissions. We present here the first comprehensive assessment of GHGs footprint associated with the creation of the Nam Theun 2 (NT2) hydroelectric reservoir in subtropical region of the Lao People's Democratic Republic. This assessment is the results of a monthly monitoring that have been conducted over 4 year (2008-to date). The carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) sources and sinks were quantified before and after impoundment, which began in May 2008. Before impoundment, the landscape to be flooded was a sink of carbon dioxide (-73 ± 225 Gg CO2eq yr-1),roughly neutral in terms of methane (7 ± 11 Gg CO2eq yr-1), and a source of nitrous oxide (345 ± 158 Gg CO2eq yr-1). After impoundment, total CO2 and CH4 emissions increased and N2O emissions decreased. For the year 2010, CO2 (791 ± 54 Gg CO2eq yr-1) and CH4 (644 ± 124 Gg CO2eq yr-1) contributed equally to the total gross GHG emissions from NT2 (54 and 43% for CO2 and CH4, respectively) whereas N2O contributed only 3% (47 ± 29 Gg CO2eq yr-1). The GHG emissions remained constant in 2011. Our results indicate that most of the GHG (around 90%) were emitted from reservoir water surface and the drawdown area, and only 10% were emitted by degassing at the turbines and from diffusive emissions downstream of the turbines and the dam, a percentage lower than reported for other hydroelectric reservoirs. With a total emissions of 1482 ± 207 and 1298 ± 200 Gg CO2eq yr-1 for year 2010 and 2011, gross NT2 emissions are about an order of magnitude higher than pre-impoundment emissions (276 ± 393 Gg CO2eq yr-1). With a net GHG emissions of 1203 ± 601 (2010) and 1022 ± 594 (2011) Gg CO2eq yr-1, and an annual power generation of about 6 TWh, GHG emission factor equal to 0.20 (2010) and 0.17 (2011) Mg CO2eq MWh-1 for NT2 which is up to five times lower than the emission factor

  7. Project final report: Energetic planning focusing small scale hydroelectric power plants; Relatorio final. Projeto planejamento energetico com enfase em pequenas centrais hidreletricas

    Energy Technology Data Exchange (ETDEWEB)

    Costa, Yara dos Santos

    1994-12-31

    Considering the increasing need for a better utilization of the Brazilian hydric resources, a deeper analysis of small scale hydroelectric power plants has been demanding. This work presents a case study of energetic planning based upon small scale hydroelectric power plants in a district of Amazon state - North Brazil 8 refs., 11 figs., 19 tabs.

  8. Assessing the damage at Mt. Coffee

    Energy Technology Data Exchange (ETDEWEB)

    Johnson, J.C. [Stanley Consultants, Inc., Minneapolis, MN (United States); Macauley, L.D. [Liberia Electricity Corp., Monrovia (Liberia)

    1995-12-31

    The Mt. Coffee Hydroelectric Project was damaged during the Liberian civil unrest in early 1990`s. A team of engineers performed a damage assessment of the project with the hope that funding could be obtained to reconstruct the project. The damage done to the plant had far greater impacts to the country than merely the cost to rebuild the facility.

  9. The Net Impact of Hydroelectric Reservoir Creation on Greenhouse Gas Emissions: A Study of the Eastmain-1 Reservoir in the Eastern James Bay region of Quebec, Canada

    Science.gov (United States)

    Strachan, I. B.; Lemieux, M.; Bonneville, M.; Roulet, N.; Tremblay, A.

    2009-05-01

    In order to satisfy present and future energy demands and to minimize greenhouse gas (GHG) emissions, there is a growing need to develop energy sources that are not based on combustion. In the boreal regions of Canada, there is a huge potential for hydroelectricity production. However, in most cases, large areas of the boreal ecosystem must be inundated to create hydroelectric reservoirs. Previous studies have established that reservoirs emit GHGs, but these studies have typically focused on emissions some years after reservoir creation. The critical question that has not been asked is 'what is the net change in the exchange of GHG that results directly from the creation of the reservoir?' - i.e. 'what is the net difference between the landscape scale exchange of GHGs before and after reservoir creation, and how does that net difference change over time from when the reservoir was first created to when it reaches a steady-state condition?'. The Eastmain-1 (EM-1) hydroelectric reservoir, located in the James Bay region of Quebec was created in late 2005 and provides a tremendous opportunity to study the impacts of reservoir creation on GHG emissions which are still largely unknown for this type of land conversion. The creation of the EM-1 hydroelectric reservoir required the flooding of over 600 km2 of the boreal ecosystem along the Eastmain River, of which 65% was occupied by forest, 14% by peatland, and 21% by lakes and rivers. In order to assess the impacts of the creation of the reservoir on GHG emissions, three eddy covariance (EC) tower flux sites were established in a black spruce forest, peatland and on an island in the reservoir itself to measure continuous net ecosystem exchange (NEE) of CO2. Together, these represent the dominant terrestrial pre-flooded (forest and peatland) and post-flooded (reservoir) environments. The forest and reservoir EC systems were installed and operational by the end of summer 2006 with the peatland site coming on-line summer of

  10. Environmental analysis report for the hydroelectric project on the Sheldrake River in the Courbe du Sault section in the municipality of Riviere-au-Tonnerre by the Societe d'energie riviere Sheldrake Inc.; Rapport d'analyse environnementale pour le projet d'amenagement hydroelectrique de la riviere Sheldrake au site de la courbe du Sault sur le territoire de la municipalite de Riviere-au-Tonnerre par la Societe d'energie riviere Sheldrake inc.

    Energy Technology Data Exchange (ETDEWEB)

    Michaud, A.; Paul, M.; Brunet, G. [Quebec Ministere du Developpement durable, de l' Environnement et des Parcs, Quebec, PQ (Canada). Direction des evaluations environnementales, Services des projets en milieu hydrique

    2010-09-29

    The Societe d'energie riviere Sheldrake Inc. (SERS Inc.) is planning to exploit the hydroelectric potential of the Sheldrake River in the Quebec municipality of Riviere au Tonnere. The proposed project will involve building a hydroelectric power station with a maximum capacity of 25 MW on the Sheldrake River, in the Courbe du Sault section. The project will also comprise a dam, a water reservoir and an overflow spillway. The project meets the province's 2006-2015 energy strategy to develop small-scale hydroelectric facilities. The project was subject to an environmental assessment as required by the province of Quebec. This environmental analysis addressed the major challenges facing the hydroelectric development at the Courbe du Sault section of the River, notably the impact on fish habitat, wetlands and the local and regional economic benefits. The environmental assessment did not indicate any habitat destruction for trout or salmon in the forebay. The Quebec Ministry of Sustainable Development, Environment and Parks has deemed the project to be acceptable given that certain conditions are met, including thresholds to stabilize the water level and the construction of a downstream fish passage facility to allow for safe fish migration. 22 refs., 2 tabs., 5 figs., 3 appendices.

  11. Environmental Impact Report from Santa Rita Hydroelectric Power Plant (Minas Gerais State - Brazil): technical strategic for its elaboration

    International Nuclear Information System (INIS)

    The steps for developing the technical strategies used on the elaboration of Environmental Impact Report from Santa Rita Hydroelectric Power Plant, Minas Gerais State, are described, including the influence area, technical requirements, impact identification, technical selection of mitigative measures, impact meaning and strategy for evaluating the identified impacts. (C.G.C.)

  12. SMOOTHING THE PEAKS: GRIDSHARE SMART GRID TECHNOLOGY TO REDUCE BROWNOUTS ON MICRO-HYDROELECTRIC MINI-GRIDS IN BHUTAN

    Science.gov (United States)

    Village scale micro-hydroelectric systems in countries like Bhutan, Thailand, Peru, Laos and China provide renewable electricity to thousands of self-reliant communities in remote locations. While promising, many of these systems are plagued by a common problem: brownouts occu...

  13. 76 FR 67169 - Solia 9 Hydroelectric LLC Riverbank Hydro No. 17 LLC Lock Hydro Friends Fund XLI FFP Project 54...

    Science.gov (United States)

    2011-10-31

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Solia 9 Hydroelectric LLC Riverbank Hydro No. 17 LLC Lock Hydro Friends Fund... LLC (Solia), and Riverbank Hydro No. 17 LLC (Riverbank), and on May 3, 2011, Lock Hydro Friends...

  14. Analysis of Environmental Issues Related to Small-Scale Hydroelectric Development II: Design Consideration for Passing Fish Upstream Around Dams

    Energy Technology Data Exchange (ETDEWEB)

    Hildebrandt, S. G. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Bell, M. C. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Anderson, J. J. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Richey, E. P. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Parkhurst, Z. E. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

    1980-08-01

    The purpose of this report is to provide general information for use by potential developers of small scale hydroelectric projects that will include facilities to pass migrating fish upstream around dams. The document is not intended to be a textbook on design of fish passage facilities, but rather to be a general guide to some factors that are important when designing such facilities.

  15. 77 FR 13317 - Lock+ Hydro Friends Fund XVIII, Upper Hydroelectric, LLC, FFP Project 95, LLC, Riverbank Hydro No...

    Science.gov (United States)

    2012-03-06

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Lock+ Hydro Friends Fund XVIII, Upper Hydroelectric, LLC, FFP Project 95...+ Hydro Friends Fund XVIII: Project No. 14261-000. 2. Riverbank Hydro No. 25, LLC: Project No....

  16. 78 FR 41056 - Notice of Availability of Environmental Assessment

    Science.gov (United States)

    2013-07-09

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Availability of Environmental Assessment BOST5 Hydroelectric LLC... by the Corps. Staff prepared a multi-project environmental assessment (EA), which analyzes...

  17. Feasibility Study of Economics and Performance of a Hydroelectric Installation at the Jeddo Mine Drainage Tunnel. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites

    Energy Technology Data Exchange (ETDEWEB)

    Roberts, J. O.; Mosey, G.

    2013-02-01

    The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Jeddo Tunnel discharge site for a feasibility study of renewable energy potential. The purpose of this report is to assess technical and economic viability of the site for hydroelectric and geothermal energy production. In addition, the report outlines financing options that could assist in the implementation of a system.

  18. Socio-economic and Environmental Implications of the Hydroelectric Projects in Uttarakhand Himalaya, India

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    This paper deals with detailed analysis of the fiasco created by the Tehri High Dam in Uttarakhand, India, particularly in terms of resettlement and rehabilitation of the local inhabitants. Aspects pertaining to the environmental issues are also discussed. Currently, the river valleys in Uttarakhand state of India are the targets of increasing hydroelectric projects. Virtually all rivers are being exploited for generating environmental friendly power. Having being learned the hard lesson from Tehri Dam, it has been decided to opt for suchschemes in which comparatively little submergenceand tempering with the fragile eco-systems is involved.However, our observations suggest that even in such schemes if due care is not taken they may turn out to be a failure.

  19. Hydroelectric power plants. Small-scale plants; 3. ed.; Wasserkraftanlagen. Klein- und Kleinstkraftwerke

    Energy Technology Data Exchange (ETDEWEB)

    Palffy, S.O.; Brada, K. [Ceske Vysoke Uceni Technicke, Prague (Czechoslovakia); Hartenstein, R. [Energie-Versorgung Schwaben AG, Stuttgart (Germany); Mueller, U. [Ingenieurbuero Maggia, Locarno (Switzerland); Nowotny, G. [WKA Anlagenbau GmbH, Heidenheim/Brenz (Germany); Partzsch, P. [Ossberger-Turbinenfabrik GmbH und Co., Weissenburg (Germany); Roemer, K.H.; Schlimgen, W.; Tratz, D.; Walcher, H. [Walcher-Elektronik, Steuerungstechnik, Transformatoren, Eichenzell (Germany)

    1996-12-31

    Small-scale power plants in the range below 500 kW make an important contribution to power generation. The book contains practical information on hydroelectric power plants, criteria for turbine selection, electric equipment, and the Ossberger turbine. Problems concerning taxation and energy and water legislation are gone into. Also discussed are economic criteria during acquisition, new construction, and modernisation for the purpose of electric power generation and grid power supply. (DG) 174 figs. [Deutsch] Klein- und Kleinstkraftwerke mit Leistungen unterhalb von 500 kW bilden einen wertvollen Aspekt der Energienutzung. Praxisnah werden die Wasserkraftanlagen, Auswahlkriterien der Turbinen, die elektrische Ausruestung und speziell die Ossberger-Turbine beschrieben. Ergaenzend sind steuerliche, energie- und wasserrechtliche Fragen sowie Kriterien der Wirtschaftlichkeit bei Erwerb, Neubau oder Modernisierung zwecks Stromerzeugung und Einspeisung in das oeffentliche Netz behandelt. (DG)

  20. Environmental effects of hydro-electric power generation in Africa and the potential for artificial floods

    International Nuclear Information System (INIS)

    Electricity is a fundamental requirement for economic growth, and hydro-electric power is often thought to be environmentally benign. However, the construction and operation of many hydro-power dams in Africa have had significant negative impacts on the environment and rural economies. Reduced downstream flooding has destroyed fisheries and starved the floodplain soils of moisture and nutrients. Often the worst-affected areas have no electrification and therefore do not benefit from power generation. New dams which are planned in Kenya and Tanzania have been specifically designed to make flood releases. This will allow electricity to be generated whilst maintaining a dynamic flooding pattern for the short-term economic importance of fisheries and agriculture and the longer-term importance of soil fertility and biodiversity. Involvement of local community representatives in deciding when flood waters should be released on the Phongolo River in South Africa has resulted in substantial benefits to floodplain users. (author)

  1. Ticks (Acari: Ixodidae on wild animals from the Porto-Primavera Hydroelectric power station area, Brazil

    Directory of Open Access Journals (Sweden)

    Marcelo B Labruna

    2002-12-01

    Full Text Available From June 2000 to June 2001, a total of 741 ticks were collected from 51 free-living wild animals captured at the Porto-Primavera Hydroelectric power station area, located alongside an approximately 180 km course of the Paraná river, between the states of São Paulo and Mato Grosso do Sul, comprising 9 species of 3 genera: Ambly-omma (7 species, Boophilus (1 and Anocentor (1. A total of 421 immature Amblyomma ticks were reared in laboratory until the adult stage, allowing identification of the species. A. cajennense was the most frequent tick species (mostly immature stages collected on 9 host species: Myrmecophaga tridactyla, Tamandua tetradactyla,Cerdocyon thous, Puma concolor,Tayassu tajacu, Mazama gouazoubira,Hydrochaeris hydrochaeris,Alouatta caraya, Cebus apella. Other tick species were less common, generally restricted to certain host taxa.

  2. Methane emission and oxygen consumption in the hydroelectric dam of Petit Saut in French Guyana

    International Nuclear Information System (INIS)

    Methane emissions from the hydroelectric dam of Petit-Saut, in French Guyana, were measured over a 20-months period. Since the beginning of the reservoir filling (January 1994), 300 km2 of tropical forest have been submerged. Biological CH4 oxidation, in the surface water of the lake and in the river downstream of the dam, lead to an intense 02 consumption. Emissions of CH4 by diffusion into the atmosphere or by degassing of the water released into the river as well as the stock of dissolved gas in the lake, and their temporal dynamics, were studied. Maximum emissions of 700 t (CH4) per day were attained in February 1994, corresponding to maximum dissolved CH4 concentrations of 14 mg l-1 in the water column. Total emissions since January 1994, were calculated from the whole data set. (authors). 7 refs., 2 figs., 1 tab

  3. Hydroelectric feasibility study: Chubb River Sites, Village of Lake Placid, New York

    Energy Technology Data Exchange (ETDEWEB)

    1979-01-01

    This study was performed to determine if the re-installation and re-activation of hydroelectric generating facilities at the Mill Pond and Power Pond dams in the Village of Lake Placid, N.Y. would be technically, environmentally, and economically feasible. The study includes a description and evaluation of the conditions of the existing facilities, an estimate of the potential generation at the two sites, a review of regulatory requirements, an economic analysis, and an implementation schedule for installing the facilities. The results show that the installation of new generating equipment within the existing powerhouse may be economically advantageous. Installation of generating facilities at the Mill Pond site would be uneconomical due to low head, aesthetic, environmental costraints, and therefore, is not recommended. The benefits which would be realized by installing equipment at the powerhouse are long term and station operation would initially have to be subsidized for a number of years. (LCL)

  4. Draft guidelines for the environmental impact study of the Great-Whale hydroelectric project

    International Nuclear Information System (INIS)

    The draft guidelines on the preparation of Hydro-Quebec's environmental and social impact statement for the proposed Great Whale River hydroelectric project are detailed. The guidelines cover project justification, description of the biophysical and social environments, project description, impacts of the project, mitigative measures, residual impacts and compensatory measures, environmental monitoring and follow-up programs. The proponent is asked to provide the justification for the project, including its general rationale, and to evaluate the long-term impact of the project. In justifying the project, the proponent should present energy demand and supply scenarios in sufficient detail to demonstrate the need for the project within the context of sustainable development. Long term impacts on the ecosystems of James Bay and Hudson Bay must be examined, as well as broad ecosystemic impacts such as those on the boreal forest, the tundra, as well as such considerations as global warming and changes in biological and cultural diversity

  5. Dynamic simulation and optimization approach to construction diversion of hydraulic and hydroelectric projects

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    To solve the engineering and scientific problems in construction diversion and its simulation analysis, a complete scheme is presented. Firstly, the complex constraint relationship was analyzed among main buildings, diversion buildings and flow control. Secondly, the time-space relationship model of construction diversion system and the general block diagram-oriented simulation model of diversion process were set up. Then, the corresponding numerical simulation method and 3D dynamic visual simulation method were put forward. Further, the simulation and optimization platform of construction diversion control process was developed, integrated with simulation modeling, computation and visualization. Finally, these methods were applied to a practical project successfully, showing that the modeling process is convenient, the computation and the visual analysis can be coupled effectively, and the results conform to practical state. They provide new theoretical principles and technical measures for analyzing the control problems encountered in construction diversion of hydraulic and hydroelectric engineering under complex conditions.

  6. Dynamic simulation and optimization approach to construction diversion of hydraulic and hydroelectric projects

    Institute of Scientific and Technical Information of China (English)

    ZHONG DengHua; LI MingChao; HUANG Wei; LIU Yong

    2009-01-01

    To solve the engineering and scientific problems in construction diversion and its simulation analysis,a complete scheme is presented. Firstly, the complex constraint relationship was analyzed among main buildings, diversion buildings and flow control. Secondly, the time-space relationship model of construction diversion system and the general block diagram-oriented simulation model of diversion process were set up. Then, the corresponding numerical simulation method and 3D dynamic visual simulation method were put forward. Further, the simulation and optimization platform of construction diversion control process was developed, integrated with simulation modeling, computation and visualization. Finally, these methods were applied to a practical project successfully, showing that the modeling process is convenient, the computation and the visual analysis can be coupled effectively,and the results conform to practical state. They provide new theoretical principles and technical measures for analyzing the control problems encountered in construction diversion of hydraulic and hydroelectric engineering under complex conditions.

  7. Incorporating Daily Flood Control Objectives Into a Monthly Stochastic Dynamic Programing Model for a Hydroelectric Complex

    Science.gov (United States)

    Druce, Donald J.

    1990-01-01

    A monthly stochastic dynamic programing model was recently developed and implemented at British Columbia (B.C.) Hydro to provide decision support for short-term energy exports and, if necessary, for flood control on the Peace River in northern British Columbia. The model establishes the marginal cost of supplying energy from the B.C. Hydro system, as well as a monthly operating policy for the G.M. Shrum and Peace Canyon hydroelectric plants and the Williston Lake storage reservoir. A simulation model capable of following the operating policy then determines the probability of refilling Williston Lake and possible spill rates and volumes. Reservoir inflows are input to both models in daily and monthly formats. The results indicate that flood control can be accommodated without sacrificing significant export revenue.

  8. Monitoring of downstream salmon and steelhead at federal hydroelectric facilities -- 1995. Annual report 1995

    International Nuclear Information System (INIS)

    The seaward migration of juvenile salmonids was monitored by the National Marine Fisheries Service (NMFS) at Bonneville and John Day Dams on the Columbia river in 1995. The NMFS Smolt Monitoring Project is part of a larger Smolt Monitoring Program (SMP) coordinated by the Fish Passage Center (FPC) for the Columbia Basin Fish and Wildlife Authority. This program focuses on protecting, mitigating, and enhancing fish populations affected by the development and operation of hydroelectric power plants on the Columbia River. The purpose of the SMP is to monitor the migration of the juvenile salmonid stocks in the Columbia basin and make flow and spill recommendations designed to facilitate fish passage. Data are also used for travel time, migration timing, and relative run size analysis. The purpose of the NMFS portion of the program is to provide FPC with species and project specific real time data from John Day and Bonneville Dams

  9. Maintenance and operation of a hydroelectric unit of energy in a power system using virtual reality

    Energy Technology Data Exchange (ETDEWEB)

    de Sousa, Marcos Paulo Alves [Federal University of Para, Faculty of Engineering Computing, Augusto Correa Street, No. 1, Belem, Para (Brazil); Emilio Goeldi Museum, Service Data Processing Department, Perimetral Avenue No. 1901, Belem, Para (Brazil); Filho, Manoel Ribeiro; Nunes, Marcus Vinicius Alves; Lopes, Andrey da Costa [Federal University of Para, Faculty of Engineering Computing, Augusto Correa Street, No. 1, Belem, Para (Brazil)

    2010-07-15

    This paper presents a new approach to training for hydroelectric unit of energy (HUE) by using virtual reality Non-immersive techniques. The software offers two modules of training: maintenance and operation. The first module, maintenance, uses the learning approach based on practice and offers different training levels, divided into three modes: automatic, guided, and exploratory, in which these modes are accessed according to the acquired degree of knowledge by the trainee in relation to maintenance procedures. The second module, allows the trainee to visualize the operation of HUE during a certain event as the electromechanical dynamics of the turbine-generator assemblage in the virtual world by the visualization of several requisite conditions before the startup-shutdown procedure of HUE. (author)

  10. A holistic approach towards optimal planning of hybrid renewable energy systems: Combining hydroelectric and wind energy

    Science.gov (United States)

    Dimas, Panagiotis; Bouziotas, Dimitris; Efstratiadis, Andreas; Koutsoyiannis, Demetris

    2014-05-01

    Hydropower with pumped storage is a proven technology with very high efficiency that offers a unique large-scale energy buffer. Energy storage is employed by pumping water upstream to take advantage of the excess of produced energy (e.g. during night) and next retrieving this water to generate hydro-power during demand peaks. Excess energy occurs due to other renewables (wind, solar) whose power fluctuates in an uncontrollable manner. By integrating these with hydroelectric plants with pumped storage facilities we can form autonomous hybrid renewable energy systems. The optimal planning and management thereof requires a holistic approach, where uncertainty is properly represented. In this context, a novel framework is proposed, based on stochastic simulation and optimization. This is tested in an existing hydrosystem of Greece, considering its combined operation with a hypothetical wind power system, for which we seek the optimal design to ensure the most beneficial performance of the overall scheme.

  11. Recent advances in diagnostic and rehabilitation technologies for hydroelectric generating equipment

    Energy Technology Data Exchange (ETDEWEB)

    Wada, Yukihiko; Ishida, Isao

    1988-04-01

    Recent trends in the diagnostic and rehabilitation technologies of hydroelectric generating equipment are described. For life diagnosis of the hydraulic turbine, the life of the component parts does not require diagnosis because it is usually renewed simply by replacing. 24 water turbines at 21 power stations were so far diagnosed and their lives were predicted. A flow chart of the life diagnosis procedure and a process of predicting the residual life of a flaw by fracture mechanics are introduced. As regards recent technology for rehabilitation and modernization of hydraulic turbines, explanations are made on turbine runners, wicket gates, main guide bearings, wicket gate stem bearings, shaft seal, speed governor, computer aided flow analysis, and electric servomotors. As to the life diagnosis of generators, insulation diagnosis of stator coils, lifetime evaluation by machine operating history, life evaluation by diansostic testing, life evaluation of the rotor coil, and preventive maintenance of mechanical components are briefly explained. (13 figs, 4 tabs, 4 refs)

  12. Estimates of hydroelectric generation using neural networks with the artificial bee colony algorithm for Turkey

    International Nuclear Information System (INIS)

    The primary objective of this study was to apply the ANN (artificial neural network) model with the ABC (artificial bee colony) algorithm to estimate annual hydraulic energy production of Turkey. GEED (gross electricity energy demand), population, AYT (average yearly temperature), and energy consumption were selected as independent variables in the model. The first part of the study compared ANN-ABC model performance with results of classical ANN models trained with the BP (back propagation) algorithm. Mean square and relative error were applied to evaluate model accuracy. The test set errors emphasized positive differences between the ANN-ABC and classical ANN models. After determining optimal configurations, three different scenarios were developed to predict future hydropower generation values for Turkey. Results showed the ANN-ABC method predicted hydroelectric generation better than the classical ANN trained with the BP algorithm. Furthermore, results indicated future hydroelectric generation in Turkey will range from 69.1 to 76.5 TWh in 2021, and the total annual electricity demand represented by hydropower supply rates will range from 14.8% to 18.0%. However, according to Vision 2023 agenda goals, the country plans to produce 30% of its electricity demand from renewable energy sources by 2023, and use 20% less energy than in 2010. This percentage renewable energy provision cannot be accomplished unless changes in energy policy and investments are not addressed and implemented. In order to achieve this goal, the Turkish government must reconsider and raise its own investments in hydropower, wind, solar, and geothermal energy, particularly hydropower. - Highlights: • This study is associated with predicting hydropower generation in Turkey. • Sensitivity analysis was performed to determine predictor variables. • GEED, population, energy consumption and AYT were used as predictor variables. • ANN-ABC predicted the hydropower generation more accurately

  13. Turbulence at Hydroelectric Power Plants and its Potential Effects on Fish.

    Energy Technology Data Exchange (ETDEWEB)

    Cada, Glenn F.; Odeh, Mufeed

    2001-01-01

    The fundamental influence of fluid dynamics on aquatic organisms is receiving increasing attention among aquatic ecologists. For example, the importance of turbulence to ocean plankton has long been a subject of investigation (Peters and Redondo 1997). More recently, studies have begun to emerge that explicitly consider the effects of shear and turbulence on freshwater invertebrates (Statzner et al. 1988; Hart et al. 1996) and fishes (Pavlov et al. 1994, 1995). Hydraulic shear stress and turbulence are interdependent natural fluid phenomena that are important to fish, and consequently it is important to develop an understanding of how fish sense, react to, and perhaps utilize these phenomena under normal river flows. The appropriate reaction to turbulence may promote movement of migratory fish or prevent displacement of resident fish. It has been suggested that one of the adverse effects of flow regulation by hydroelectric projects is the reduction of normal turbulence, particularly in the headwaters of reservoirs, which can lead to disorientation and slowing of migration (Williams et al. 1996; Coutant et al. 1997; Coutant 1998). On the other hand, greatly elevated levels of shear and turbulence may be injurious to fish; injuries can range from removal of the mucous layer on the body surface to descaling to torn opercula, popped eyes, and decapitation (Neitzel et al. 2000a,b). Damaging levels of fluid stress can occur in a variety of circumstances in both natural and man-made environments. This paper discusses the effects of shear stress and turbulence on fish, with an emphasis on potentially damaging levels in man-made environments. It defines these phenomena, describes studies that have been conducted to understand their effects, and identifies gaps in our knowledge. In particular, this report reviews the available information on the levels of turbulence that can occur within hydroelectric power plants, and the associated biological effects. The final section

  14. West Kootenay Power Ltd. : Application to sell its hydroelectric generation assets : Decision

    International Nuclear Information System (INIS)

    An investor-owned electric utility providing wholesale and retail service in the West Kootenay and South Okanagan regions of British Columbia, West Kootenay Power Ltd. (WKP) sought the approval from the British Columbia Utilities Commission to sell the four hydroelectric power plants and related facilities to Kootenay River Power Corporation (KRP), and for the purchase by WKP of the output of these plants under a 60-year power purchase agreement. The four hydroelectric plants have a combined rated capacity of approximately 214 MW. Most of the energy and capacity needs of WKP are met via power purchase contracts and agreements, as winter peak loads approach 700 MW. As a result of share purchases, KRP would be 50 per cent owned by each of a provincial Crown Corporation, Columbia Power Corporation (CPC) and a wholly-owned subsidiary of the Columbia Basin Trust (CBT), CBT Energy Inc., if the transactions are allowed to proceed. Three principal agreements are of interest: the Asset Transfer Agreement (ATA), the Share Purchase Agreement (SPA), and the Power Purchase Agreement (PPA). During the review process, two main issues warranted special consideration: the treatment of the proceeds of the sale of assets, and the statutory parameters used by the Commission for the adjudication of the Application. The Application was submitted March 22, 2001, and the public hearing process began May 29, 2001. This Application is unique, in that it contains three agreements that would each require a separate review, but WKP requested that the agreements be considered in their aggregate. The Commission complied, and decided to deny the Application. Unless the terms of the sale are restructured, the transfer of assets to Kootenay River Power Corporation will not be approved by the Commission. Within one month of the date of this decision, WKP is to notify the Commission of its intentions, since it had signified that it would not proceed with the sale unless WKP shareholder receives 100

  15. Behavioural adaptations of rheophilic fish radio-tracked in a river highly fragmented by hydroelectric plants. Outcomes of a partial reopening of their migration routes.

    OpenAIRE

    Ovidio, Michaël; Dierckx, Arnaud; Benitez, Jean-Philippe; Philippart, Jean-Claude; Orban, Patrice

    2012-01-01

    Using water resources for hydroelectricity production influences and limits the quality and quantity of habitat available for use by fishes and influences fish mobility. In the Amblève (River Meuse basin, Belgium), the major part of the river is fragmented by hydroelectric power plants that largely prevent the biological movements of the fish population. In 2007, in the hydroelectric site of Lorcé, a modern pool-type fish pass was constructed, re-establishing the upstream movements of fish af...

  16. Further Tests of Changes in Fish Escape Behavior Resulting from Sublethal Stresses Associated with Hydroelectric Turbine Passage

    Energy Technology Data Exchange (ETDEWEB)

    Ryon, M.G.

    2004-10-20

    Fish that pass through a hydroelectric turbine may not be killed directly, but may nonetheless experience sublethal stresses that will increase their susceptibility to predators (indirect mortality). There is a need to develop reliable tests for indirect mortality so that the full consequences of passage through turbines (and other routes around a hydroelectric dam) can be assessed. The most commonly used laboratory technique for assessing susceptibility to predation is the predator preference test. In this report, we evaluate the field application of a new technique that may be valuable for assessing indirect mortality, based on changes in a behavioral response to a startling stimulus (akin to perceiving an approaching predator). The behavioral response is a rapid movement commonly referred to as a startle response, escape response, or C-shape, based on the characteristic body position assumed by the fish. When viewed from above, a startled fish bends into a C-shape, then springs back and swims away in a direction different from its original orientation. This predator avoidance (escape) behavior can be compromised by sublethal stresses that temporarily stun or disorient the fish. Initial studies demonstrated that turbulence created in a small laboratory tank can alter escape behavior. As a next step, we converted our laboratory design to a more portable unit, transported it to Alden Research Laboratory in Holden, Massachusetts, and used it to test fish that passed uninjured through a pilot-scale turbine runner. Rainbow trout were either passed through the turbine or exposed to handling stresses, and their behavior was subsequently evaluated. Groups of five fish were given a startle stimulus (a visual and pressure wave cue) and filmed with a high-speed (500 frames per s) video camera. The reactions of each group of fish to the startle stimulus were filmed at nominally 1-, 5-, and 15-min post-exposure. We compared the behaviors of 70 fish passed through the turbine

  17. Assessment

    Institute of Scientific and Technical Information of China (English)

    Geoff Brindley

    2005-01-01

    @@ Introduction TERMINOLOGY AND KEY CONCEPTS The term assessment refers to a variety of ways of collecting information on a learner's language ability or achievement. Although testing and assessment are often used interchangeably, the latter is an umbrella term encompassing measurement instruments administered on a ‘one-off’ basis such as tests, as well as qualitative methods of monitoring and recording student learning such as observation, simulations of project work. Assessment is also distinguished from evaluation which is concerned with the overall language programme and not just with what individual students have learnt. Proficiency assessment refers to the assessment of general language abilities acquired by the learner independent of a course of study.This kind of assessment is often done through the administration of standardised commercial language-proficency tests. On the other hand, assessment of achievement aims to establish what a student had learned in relation to a particular course or curriculum (thus frequently carried out by the teacher) .Achievement assesssment may be based either on the specific content of the course or on the course objectives (Hughes 1989).

  18. A parallel between the impacts of hydroelectric and thermoelectric power plants; Um paralelo entre os impactos das usinas hidreletricas e termoeletricas

    Energy Technology Data Exchange (ETDEWEB)

    Guerra, Sinclair M.G.; Carvalho, Antomar V. de [Universidade Estadual de Campinas, SP (Brazil). Faculdade de Engenharia Mecanica

    1995-07-01

    An evaluation of the environmental impacts of hydroelectric and thermoelectric power plants using the Leopold method is presented. The evaluation includes impacts on the physical, biological and socio-economic sectors. 8 refs., 3 figs., 2 tabs.

  19. Flow-Induced Pulsation and Vibration in Hydroelectric Machinery Engineer’s Guidebook for Planning, Design and Troubleshooting

    CERN Document Server

    Dörfler, Peter; Coutu, André

    2013-01-01

    Since the 1970’s, an increasing amount of specialized research has focused on the problems created by instability of internal flow in hydroelectric power plants. However, progress in this field is hampered by the inter­disciplinary nature of the subject, between fluid mechanics, structural mechanics and hydraulic transients. Flow-induced Pulsation and Vibration in Hydroelectric Machinery provides a compact guidebook explaining the many different underlying physical mechanisms and their possible effects.   Typical phenomena are described to assist in the proper diagnosis of problems and various key strategies for solution are compared and considered with support from practical experience and real-life examples. The link between state-of the-art CFD computation and notorious practical problems is discussed  and quantitative data is provided on  normal levels of vibration and pulsation so realistic limits can be set for future projects. Current projects are also addressed as the possibilities and limitatio...

  20. Status Review of Wildlife Mitigation at 14 of 27 Major Hydroelectric Projects in Idaho, 1983-1984 Final Report.

    Energy Technology Data Exchange (ETDEWEB)

    Martin, Robert C.; Mehrhoff, L.A.

    1985-01-01

    The Pacific Northwest Electric Power Planning and Conservation Act and wildlife and their habitats in the Columbia River Basin and to compliance with the Program, the wildlife mitigation status reports coordination with resource agencies and Indian Tribes. developed the Columbia River Basin Fish and Wildlife Program development, operation, and maintenance of hydroelectric projects on existing agreements; and past, current, and proposed wildlife factual review and documentation of existing information on wildlife meet the requirements of Measure 1004(b)(l) of the Program. The mitigation, enhancement, and protection activities were considered. In mitigate for the losses to those resources resulting from the purpose of these wildlife mitigation status reports is to provide a resources at some of the Columbia River Basin hydroelectric projects the river and its tributaries. To accomplish this goal, the Council were written with the cooperation of project operators, and in within Idaho.

  1. Spatial Distribution of Fragmentation by Diversion-Typed Hydroelectric Plant Exploitation in East Baoxing Catchment from 1999 to 2013

    OpenAIRE

    Yong Huang; Li Zheng; Dongchuan Wang; Wengang Chen; Qianqian Wang

    2015-01-01

    In the Southwest Mountain areas, successive hydroelectric plant exploitation by humans on Baoxing River can exert a significant impact on regional landscape composition and structure. Taking East Baoxing River Catchment as the study area, the authors developed a method combining Moving Window based Calculation and Spatial Correlation Analysis to analyze the relationship between fragmentation and related spatial factors at a local scale, aiming to examine the spatial distribution rule of the l...

  2. Modeling Artisanal Fisheries and Hydroelectricity in Relation to the Itezhi-tezhi Dam on the Kafue River, Zambia

    OpenAIRE

    Richard Jensen

    2012-01-01

    Maximizing the production of ecosystem services is a necessity for resource management particularly when increasing the provision of one service decreases the provision of another. In these instances, it is important to estimate the value of ecosystem services to efficiently distribute resources. We estimate two major ecosystem services provided by the Kafue River, Zambia -hydroelectricity and fisheries- and discuss management implications of the relationship between hydropower controlled wat...

  3. A model optimization for pre-dispatch among the hydroelectric generator unities; Um modelo de otimizacao para pre-despacho entre as unidades geradoras de hidreletricas

    Energy Technology Data Exchange (ETDEWEB)

    Colnago, Glauber R.; Correia, Paulo B. [Universidade Estadual de Campinas (UNICAMP), Campinas, SP (Brazil). Faculdade de Engenharia Mecanica]. E-mails: grcolnago@fem.unicamp.br; pcorreia@fem.unicamp.br

    2006-07-01

    This work proposes a mixed integer nonlinear programming model to pre-dispatch of a hydroelectric power plant. In the model we want to minimize the losses in the electricity generation with conditions of electricity demand, operational prohibited zones and units' efficiency data. The Xingo Hydroelectric Power Plant was utilized in the mode tests. The solver used was Lingo 8.0. (author)

  4. Seasonal variation in plasma nonesterified fatty acids of Lake Sturgeon (Acipenser fulvescens) in the vicinity of hydroelectric facilities

    International Nuclear Information System (INIS)

    To establish the effects of hydroelectric generation on the health of lake sturgeon (Acipenser fulvescens), seasonal variations in plasma nonesterified fatty acids (NEFAs) upstream and downstream from hydroelectric stations were measured over a 2-y period. Plasma NEFA profiles were also compared up- and downstream of the stations for differences in utilization of individual NEFA species as substrates for lipid oxidation. Significantly higher levels of total plasma NEFA were found in lake sturgeon upstream (2355 ± 395.9 nmole/ml) compared with those downstream (798 ± 133.5 nmole/ml) of the generating stations during the spring. The NEFA profiles for several key fatty acid species differed significantly among seasons up- and downstream of the facilities. In particular, during spring and summer, the levels of oleic acid (18:1n9) were highest upstream of the stations and levels of a polyunsaturated fatty acid, docosahexaenoic acid (22:6n3), were higher below rather than above the stations. The differences in plasma NEFA concentration may be attributed to altered nutritional status due to the varying flow regime located downstream of the hydroelectric stations. 33 refs., 4 figs., 1 tab

  5. Changes in the soil moisture regime in the aeration zone after setting the Gabcikovo hydroelectric power structures into operation

    International Nuclear Information System (INIS)

    Setting the hydroelectric power structures Gabcikovo into operation impacts the regime of surface and ground water. Changes in the ground water regime are transferred to the biosphere through the aeration zone. These changes are manifested in the changes of soil moisture regime in the aeration zone. It may be stated that if there is an increase of the ground water level due to construction of hydroelectric power structures, then there is also an increase in humidity in the aeration zone, while it may occasionally remain unchanged at some locations, in no case does it decrease. The same is valid also reciprocally. If there is a drop of ground water level due to hydroelectric power structures, then there is also a decrease of moisture in the aeration zone, occasionally it may be unchanged at some locations, but in no case does it increase. Therefore, neither increase of moisture due to the decrease of ground water level, nor the opposite can happen. Changes in the soil moisture in the aeration zone for selected localities along the Danube are charted on the graphs for the interval of years 1990-1994. For the comparison the fluctuation of the ground water, the date of damming the Danube and the date of the start of river branches water supply, etc., are given. (authors). 1 tabs., 17 figs., 10 maps, 10 refs

  6. The Effect of Hydroelectric Power Plants (hpp) on Agro-Life at Rural Land Regulation in Turkey

    Science.gov (United States)

    Onursal Denli, G.; Denli, H. H.; Seker, D. Z.; Bitik, E.; Cetin, S.

    2014-12-01

    Turkey is one of the self-sufficient in foodstuffs and globally ranks as 7th significant agricultural exporter in the world. Main trading partners are the European Union, the United States and the Middle East. As known, agricultural production is dependent on factors including efficient and effective use of all inputs ranging from those natural resources as in land and water to well-trained human resources as labour at the production. The socio-economic aspects of this sector take several forms ranging from the incomes of the primary producers. Rural land regulation is a necessity for rural areas and is regarded as a useful instrument for improving farmer's incomes and life standards. The irrigation system, established during the rural regulation/land consolidation period of large-scale farming, is insufficiently adjusted to the new land tenure structures. The government is especially in the process of water management with hydroelectric power plants. This process produces energy that is required but effects negatively the rivers and agricultural, environmental, climatic conditions. Rivers are vessels of the nature. Free flowing rivers give life to all nature. Most of the studies indicate that Hydroelectric Power Plants (HPP) affects the surface and ground-water management, natural life, agricultural productivity, socio-economic situation at agricultural regions and agro-life related with immigration. This study emphasizes the effect of Hydroelectric Power Plants which are used in transformation of water as a renewable natural resource into electricity power from the perspective of environmental policies and rural regulation.

  7. Downstream movement of mature eels in a hydroelectric reservoir in New Zealand

    Science.gov (United States)

    Watene, E.M.; Boubee, J.A.T.; Haro, A.

    2003-01-01

    This study investigates the behavior of migrant eels as they approached the Patea hydroelectric dam on the West Coast of the North Island, New Zealand. Seventeen mature migrant eels (870-1,240 mm; 2,000-6,380 g) were implanted with coded acoustic transmitters and released. Their movements in the reservoir were monitored for 14 months with stationary data logging and manual tracking receivers. The downstream migration of sexually maturing eels was found to occur mainly at night, usually during, or immediately after, rainfall events. Eels tended to travel at the surface, within the upper 4 m of the water column, at speeds ranging from 16 to 89 cm/s. Upon reaching the headrace, eels typically spent time searching, presumably for an unobstructed downstream route. In order to aid downstream passage of eels at the Patea Dam, power station operators began spillway opening trials during peak migration periods. Although this allowed some migrant eels to safely pass over the dam, information on the relative effectiveness and cost of this method over other possible mitigation methods is still required. ?? Copyright by the American Fisheries Society 2003.

  8. The monitoring of mosquitoes (Diptera, Culicidae) in the area affected by the Gabcikovo hydroelectric power structures

    International Nuclear Information System (INIS)

    Monitoring of the impact of the Gabcikovo hydroelectric power structures on mosquitoes (Diptera, Culicidae) in 8 areas and 16 stationary stands during 1990-1994 is presented. The following 9 species of mosquitoes were ascertained: Anopheles maculipennis, s.1, Culiseta annulata, Aedes vexans, Aedes sticticus, Aedes dorsalis, Aedes cinereus, Culex pipiens, Culex territans a Culex modestus. Important changes in the quantity as well as the quality of mosquitoes, were observed in connection with the changes in the ground water level. In 1994 we recorded only 4 species of mosquitoes: Anopheles maculipennis s.1, Aedes vexans, Aedes sticticus, Culex territans. The quantity of mosquitoes decreased significantly at all monitored stands near the river Danube upstream of the confluence with the tail race canal. Cunovo reservoir acted positively on the adjacent monitoring localities Kopac Island and Cunovo-Ostrovne lucky. The recorded communities of mosquitoes Anopheles maculipennis s.1 a Culex territans, are, according to our observations, typical for stabilised water levels. (author). 1 tab., 2 refs

  9. Hydroelectric power plants. Small-scale plants; 4. ed.; Wasserkraftanlagen. Klein- und Kleinstkraftwerke

    Energy Technology Data Exchange (ETDEWEB)

    Palffy, S.O.; Brada, K. [Ceske Vysoke Uceni Technicke, Prague (Czechoslovakia); Hartenstein, R. [Energie-Versorgung Schwaben AG, Stuttgart (Germany); Mueller, U. [Ingenieurbuero Maggia, Locarno (Switzerland); Nowotny, G. [WKA Anlagenbau GmbH, Heidenheim/Brenz (Germany); Partzsch, P. [Ossberger-Turbinenfabrik GmbH und Co., Weissenburg (Germany); Roemer, K.H.; Schlimgen, W.; Tratz, D.; Walcher, H. [Walcher-Elektronik, Steuerungstechnik, Transformatoren, Eichenzell (Germany)

    1998-12-31

    Small-scale power plants in the range below 500 kW make an important contribution to power generation. The book contains practical information on hydroelectric power plants, criteria for turbine selection, electric equipment, and the Ossberger turbine. Problems concerning taxation and energy and water legislation are gone into. Also discussed are economic criteria during acquisition, new construction, and modernisation for the purpose of electric power generation and grid power supply. (DG) [Deutsch] Dieses Buch gibt praxisbezogen Auskunft fuer all jene, die - eine Wasserkraftanlage fuer Energietransformation und -verwendung im eigenen Betrieb errichten oder erwerben wollen - eine Wasserkraftanlage schon besitzen oder erwerben moechten, die aber modernisiert und evtl. vergroessert werden soll - eine bisher stillgelegte Anlage wieder in Betrieb nehmen wollen (hierbei ist in der Regel ebenfalls eine Modernisierung notwendig) - eine Wasserkraftanlage zur Stromerzeugung und Einspeisung in das oeffentliche Netz nutzen wollen. Inhalt: Einfuehrung in die theoretischen Grundlagen - Auswahlkriterien - Elektrische Ausruestungen - Gesamtplanung - die Ossberger Turbine - Energierechtliche Probleme - Wirtschaftlichkeitskriterien - Steuerliche Fragen bei Errichtung, Erwerb und Modernisierung - Aufrechterhaltung vorhandener alter Wasserrechte bei Modernisierung von Klein- und Kleinstkraftwerken. (orig.)

  10. On the performance of nondestructive testing methods in the hydroelectric turbine industry

    International Nuclear Information System (INIS)

    Welded joints of turbine runners are one of the most critical parts of Francis turbines due to the presence of welding discontinuity and high stress. Because of thermal cycles, solidification, cooling distortion and residual stresses, welded joints always include discontinuities of different types and sizes. Some specific parameters will limit welding flaw dimensions in some or all direction based on the joint geometry, material and welding procedure. If discontinuities of critical size remain undetected, fatigue cracks might initiate and propagate in these zones because of dynamic in-service stresses leading to high repair costs and long down times. Therefore, reliable NDT methods and good knowledge of the probability of occurrence of welding flaws is important for fatigue life estimations. Every NDT method has its weaknesses; therefore, even after meticulous inspections it is likely for some discontinuities of critical sizes to remain in the welded joint. Our objective is to clarify the probability of detection and occurrence of different types of welding flaws in hydroelectric turbine runners. Furthermore, an overview of current nondestructive inspection methods and their capability in characterizing flaw dimensions will be discussed. Finally, advanced NDT techniques, for the characterization of welded joints integrity, will be proposed

  11. On the performance of nondestructive testing methods in the hydroelectric turbine industry

    Science.gov (United States)

    Habibzadeh Boukani, H.; Viens, M.; Tahan, S. A.; Gagnon, M.

    2014-03-01

    Welded joints of turbine runners are one of the most critical parts of Francis turbines due to the presence of welding discontinuity and high stress. Because of thermal cycles, solidification, cooling distortion and residual stresses, welded joints always include discontinuities of different types and sizes. Some specific parameters will limit welding flaw dimensions in some or all direction based on the joint geometry, material and welding procedure. If discontinuities of critical size remain undetected, fatigue cracks might initiate and propagate in these zones because of dynamic in-service stresses leading to high repair costs and long down times. Therefore, reliable NDT methods and good knowledge of the probability of occurrence of welding flaws is important for fatigue life estimations. Every NDT method has its weaknesses; therefore, even after meticulous inspections it is likely for some discontinuities of critical sizes to remain in the welded joint. Our objective is to clarify the probability of detection and occurrence of different types of welding flaws in hydroelectric turbine runners. Furthermore, an overview of current nondestructive inspection methods and their capability in characterizing flaw dimensions will be discussed. Finally, advanced NDT techniques, for the characterization of welded joints integrity, will be proposed.

  12. Hydroelectric development and translocation of Galaxias brevipinnis: a cloud at the end of the tunnel?

    Energy Technology Data Exchange (ETDEWEB)

    Waters, J. M.; Closs, G. P. [Otago Univ., Dept. of Zoology, Dunedin (New Zealand); Shirley, M. [Sinclair Knight Merz, Victoria (Australia)

    2002-01-01

    This study aims to determine the genetic status of Murray River Galaxias brevipinnis, a small salmoniform freshwater fish in southeastern Australia, Tasmania, New Zealand and associated island, which is an aggressive migrant that is able to penetrate long distances. Determining the genetic status would make it possible to discriminate between conflicting hypotheses explaining the origin of this species. If a human-mediated translocation scenario is supported, the study may have implications for hydroelectric developments in general. Alternatively, if Murray River G. brevipinnis are shown to be native to this drainage, the opportunity exists to identify significant units of biodiversity for conservation. DNA analysis data assembled by these authors are consistent with the translocation hypothesis but are generally inconsistent with a natural origin Murray River G. brevipinnis. It is concluded that this human-mediated translocation represents a risk to native fauna. The most significant risk is the danger of hybridization between translocated G. brevipinnis and native G. olidus. 39 refs., 3 tabs., 6 figs.

  13. Overview of, and demands on, small hydroelectric turbines; Kleinwasserturbinen, Ueberblick und Anforderungen

    Energy Technology Data Exchange (ETDEWEB)

    Lein, G. [Stuttgart Univ. (Germany). Inst. fuer Stroemungsmechanik und Hydraulische Stroemungsmaschinen

    1997-12-31

    The report deals with some aspects of small hydroelectric turbines which the reporter`s experience has proved to be relevant. Although this experience derives in part from larger units, most of it holds true also of small turbines. The report does not restrict itself to the high-tech conditions of central Europe. A brief overview of turbine types is given. Questions of the choice and construction of turbines, and questions relating to guarantees and their verification are discussed. Some important standards, norms and guidelines which apply to small turbines are pointed out. (orig.) [Deutsch] Im folgenden Bericht werden einige Aspekte von Kleinwasserturbinen angesprochen, die nach der Erfahrung des Berichters von Wichtigkeit sind. Wenn diese Erfahrungen auch zum Teil an groesseren Einheiten gewonnen wurden, so sind sie doch ueberwiegend auch fuer Kleinturbinen gueltig. Der Bericht beschraenkt sich dabei nicht auf Verhaeltnisse in unserem hochtechnisierten mitteleuropaeischen Raum. Nach einem kurzen Ueberblick ueber die Turbinentypen werden Fragen der Turbinenauswahl und -konstruktion und der Garantien und deren Nachweis angesprochen. Schliesslich wird eine Uebersicht ueber einige wichtige Standards, Normen und Richtlinien, die auf Kleinturbinen angewendet werden koennen, gegeben. (orig.)

  14. Determination of methane emissions in three hydroelectric dams in Costa Rica

    Directory of Open Access Journals (Sweden)

    Jorge Herrera

    2013-12-01

    Full Text Available The emission fluxes of methane (CH4 across air–water interface were measured in three hydroelectric dams in Costa Rica (Brasil, Nuestro Amo and Cote Lake during three years cycle (2009-2011, using the floating static chamber technique. Samples were taken during one week, both day and night time, through four campaigns per year. For the methane flux determination the water surface was divided in a 4x4 grid equally spaced. During this period, CH4 fluxes showed average values that ranged from 759 – 4282 (Brasil, 77 – 733 (Nuestro Amo and 10,9 – 44,2 mg CH4 m-2 d-1 (Cote Lake, respectively. The fluxes of CH4 showed both strong seasonal and diurnal variations. CH4 emission rate was highest in dry season and there was a significant difference for CH4 emissions between day and night, the ratios between nighttime to daytime methane flux increased from 0,35 to 0,72, 0,43 to 0,64 for Brasil and Nuestro Amo, respectively in this season. CH4 emission was correlated positively with soil temperature, water table and chlorophyll a water concentrations.

  15. WTS-4 system verification unit for wind/hydroelectric integration study

    Science.gov (United States)

    Watts, A. W.

    The Bureau of Reclamation (Reclamation) initiated a study to investigate the concept of integrating 100 MW of wind energy from megawatt-size wind turbines with the Federal hydroelectric system. As a part of the study, one large wind turbine was purchased through the competitive bid process and is now being installed to serve as a system verification unit (SVU). Reclamation negotiated an agreement with NASA to provide technical management of the project for the design, fabrication, installation, testing, and initial operation. Hamilton Standard was awarded a contract to furnish and install its WTS-4 wind turbine rated at 4 MW at a site near Medicine Bow, Wyoming. The purposes for installing the SVU are to fully evaluate the wind/hydro integration concept, make technical evaluation of the hardware design, train personnel in the technology, evaluate operation and maintenance aspects, and evaluate associated environmental impacts. The SVU will be operational in June 1982. Data from the WTS-4 and from a second SVU, Boeing's MOD-2, will be used to prepare a final design for a 100-MW farm if Congress authorizes the project.

  16. Development of an HTS hydroelectric power generator for the hirschaid power station

    Energy Technology Data Exchange (ETDEWEB)

    Fair, Ruben; Lewis, Clive; Eugene, Joseph; Ingles, Martin, E-mail: ruben.fair@converteam.co [Advanced Technology Group, Converteam, Rugby, CV21 1BD (United Kingdom)

    2010-06-01

    This paper describes the development and manufacture of a 1.7MW, 5.25kV, 28pole, 214rpm hydroelectric power generator consisting of superconducting HTS field coils and a conventional stator. The generator is to be installed at a hydro power station in Hirschaid, Germany and is intended to be a technology demonstrator for the practical application of superconducting technology for sustainable and renewable power generation. The generator is intended to replace and uprate an existing conventional generator and will be connected directly to the German grid. The HTS field winding uses Bi-2223 tape conductor cooled to about 30K using high pressure helium gas which is transferred from static cryocoolers to the rotor via a bespoke rotating coupling. The coils are insulated with multi-layer insulation and positioned over laminated iron rotor poles which are at room temperature. The rotor is enclosed within a vacuum chamber and the complete assembly rotates at 214rpm. The challenges have been significant but have allowed Converteam to develop key technology building blocks which can be applied to future HTS related projects. The design challenges, electromagnetic, mechanical and thermal tests and results are presented and discussed together with applied solutions.

  17. Small-scale hydroelectric power in the southeast: new impetus for an old energy source

    Energy Technology Data Exchange (ETDEWEB)

    1980-06-01

    The Southeastern conference, Small-Scale Hydroelectric Power: New Impetus for an Old Energy Source, was convened to provide a forum for state legislators and other interested persons to discuss the problems facing small-scale hydro developers, and to recommend appropriate solutions to resolve those problems. During the two-day meeting state legislators and their staffs, along with dam developers, utility and industry representatives, environmentalists and federal/state officials examined and discussed the problems impeding small-scale hydro development at the state level. Based upon the problem-oriented discussions, alternative policy options were recommended for consideration by the US Department of Energy, state legislatures and the staff of the National Conference of State Legislatures (NCSL). Emphasis was placed on the legal, institutional, environmental and economic barriers at the state level, as well as the federal delays associated with licensing small-scale hydro projects. Whereas other previously held conferences have emphasized the identification and technology of small-scale hydro as an alternative energy source, this conference stressed legislative resolution of the problems and delays in small-scale hydro licensing and development. Panel discussions and workshops are summarized. Papers on the environmental, economic, and legal aspects of small-scale hydropower development are presented. (LCL)

  18. Lake Robertson hydroelectric project. Construction of a roller compacted concrete dam

    Energy Technology Data Exchange (ETDEWEB)

    Labelle, M.; Robitaille, F. [Hydro-Quebec, Montreal, PQ (Canada)

    1995-12-31

    Construction of the Lake Robertson hydroelectric project on Quebec`s Lower North Shore was discussed in detail. The dam and powerhouse, located on the HaHa River, consists of a 134 m long concrete gravity dam, and a 21 MW powerhouse with two 69 kV transmission lines and four substations. The climate, terrain, and geography of the region, all of them characterized as severe, and the logistics of construction of the dam and power lines, aggravated by the isolation and severe conditions at the site, were described. The roller compacted concrete design and construction were noted, and justification for a concrete dam over an earth-fill dam was provided. Economics, properties, and composition of the roller compacted concrete (RCC) were examined, and control test results for the RCC concrete were provided. The use of RCC for the Lake Robertson development was described as successful in terms of the quality, watertightness, and completion time. The experience gained by the participants will make it possible to offer RCC as an alternative on various other projects. 2 figs.

  19. Management of the mercury issue at the La Grande hydroelectric complex, Quebec, Canada

    International Nuclear Information System (INIS)

    Mercury concentrations in all fish species was found to increase rapidly following the flooding of the reservoirs at the La Grande hydroelectric complex in northern Quebec. The mercury concentrations peaked after 5 to 9 years in non-piscivorous fishes, and after 10 to 13 years in piscivorous species. After that, mercury declined significantly and consistently. Peak concentrations were 3 to 7 times higher than in natural lakes. Nineteen years after flooding, the concentrations in the non-piscivorous species returned to the same levels as in natural lakes. For the piscivorous species, natural concentrations were reached between 20 and 30 years after flooding. This presentation described the success of a program that was initiated to reduce the health risks associated with mercury exposure in fish. The program included the James Bay Mercury Agreement; a study of the source and fate of mercury in northern Quebec; monitoring mercury levels in fish and of Cree exposure to mercury; public information campaigns; and, fish consumption advisories

  20. Feasibility determination of hydroelectric power generation at Patillas Reservoir, Puerto Rico. Final report

    Energy Technology Data Exchange (ETDEWEB)

    Huetter, J.J. Jr.

    1979-02-01

    The overall feasibility of retrofit for hydroelectric power generation at the Patillas Reservoir, an existing impoundment located near the town of Patillas, Puerto Rico, was studied. The scope of work and project intent is limited to establishing valid acceptance or non-acceptance criteria for this specific site as an example of power generation potential at existing dams of relatively low head (less than or equal to 20 m) in the United States. Information is included on hydrologic conditions at the site, retrofit plant design, economic analysis, environmental, legal, social and institutional aspects, and availability of plant equipment. It is concluded that generation of hydropower at Patillas is entirely practical and uncomplicated from an engineering viewpoint, has no adverse environmental effects and is economically justifiable for the island of Puerto Rico. The final agency or contractor roles for development are reasonably well-established. There are no prohibitory laws or regulations concerning this development. In fact, according to Puerto Rico legislation, such hydropower developments appear to be mandated. The installed capacity of the site ranges from 665 kW to approximately 1500 kW depending on extent of development of the available options. (LCL)

  1. Tazimina hydroelectric project, Iliamna, Alaska. Final technical and construction cost report

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-08-01

    The Iliamna-Newhalen-Nondalton Electric Cooperative (INNEC) provides electrical power to three communities of the same names. These communities are located near the north shore of Iliamna Lake in south-central Alaska approximately 175 miles southwest of Anchorage. A hydroelectric project was constructed for these communities, starting in the spring of 1996 and ending in the spring of 1998. The project site is on the Tazimina River about 12 miles northeast of Iliamna Lake. The taximina River flows west from the Aleutian Range. The project site is at Tazimina Falls about 9 miles upstream of the confluence of the Tazimina River and the Newhalen River. The project has an installed capacity of 824 kilowatts (kW) and is expandable to 1.5 megawatts (MW). The project is run-of-the-river (no storage) and uses the approximately 100 feet of natural head provided by the falls. The project features include a channel control sill, intake structure, penstock, underground powerhouse, tailrace, surface control building, buried transmission line and communication cable, and access road.

  2. Fitzsimmons run-of-river hydroelectric project : threading a needle through an Olympic venue

    Energy Technology Data Exchange (ETDEWEB)

    Harrison, C.; Humphries, R. [Golder Associates Ltd., Squamish, BC (Canada); Tremblay, C. [RSW Inc., Vancouver, BC (Canada); Yamamoto, S. [Ledcor CMI, Vancouver, BC (Canada)

    2009-07-01

    This paper outlined a hydro-electric project that is currently being constructed in the Resort Municipality of Whistler, British Columbia. The Fitzsimmons Creek project is a 7.5 MW run-of-river hydro project that will operate beside a bobsleigh track built for for the 2010 Olympic games. The project is comprised of a 248 m head drop on the creek with a 3.4 km penstock to a powerhouse equipped with a vertical Pelton turbine with a design flow of 4 m{sup 3} per second. The intake and spillway structures were located in a narrow section of the creek where a high sediment load is required to pass over the structure during flood conditions. Part of the penstock is being installed in a narrow access road between the bobsleigh track and the slope down to the creek. Vertical micro-piles are being used for slope stabilization. The powerhouse has been positioned at the base of a steep slope away from the potential outwash flooding from landslides. The difference in elevation between the intake and powerhouse is approximately 250 m. It was concluded that despite the design challenges of the project, no disturbances to the Olympic bobsleigh infrastructure have occurred as a result of the project. 8 refs., 4 figs.

  3. Examining the cost efficiency of Chinese hydroelectric companies using a finite mixture model

    International Nuclear Information System (INIS)

    This paper evaluates the operational activities of Chinese hydroelectric power companies over the period 2000–2010 using a finite mixture model that controls for unobserved heterogeneity. In so doing, a stochastic frontier latent class model, which allows for the existence of different technologies, is adopted to estimate cost frontiers. This procedure not only enables us to identify different groups among the hydro-power companies analysed, but also permits the analysis of their cost efficiency. The main result is that three groups are identified in the sample, each equipped with different technologies, suggesting that distinct business strategies need to be adapted to the characteristics of China's hydro-power companies. Some managerial implications are developed. - Highlights: ► This paper evaluates the operational activities of Chinese electricity hydric companies. ► This study uses data from 2000 to 2010 using a finite mixture model. ► The model procedure identifies different groups of Chinese hydric companies analysed. ► Three groups are identified in the sample, each equipped with completely different “technologies”. ► This suggests that distinct business strategies need to be adapted to the characteristics of the hydric companies

  4. Modeling surface energy fluxes and thermal dynamics of a seasonally ice-covered hydroelectric reservoir.

    Science.gov (United States)

    Wang, Weifeng; Roulet, Nigel T; Strachan, Ian B; Tremblay, Alain

    2016-04-15

    The thermal dynamics of human created northern reservoirs (e.g., water temperatures and ice cover dynamics) influence carbon processing and air-water gas exchange. Here, we developed a process-based one-dimensional model (Snow, Ice, WAater, and Sediment: SIWAS) to simulate a full year's surface energy fluxes and thermal dynamics for a moderately large (>500km(2)) boreal hydroelectric reservoir in northern Quebec, Canada. There is a lack of climate and weather data for most of the Canadian boreal so we designed SIWAS with a minimum of inputs and with a daily time step. The modeled surface energy fluxes were consistent with six years of observations from eddy covariance measurements taken in the middle of the reservoir. The simulated water temperature profiles agreed well with observations from over 100 sites across the reservoir. The model successfully captured the observed annual trend of ice cover timing, although the model overestimated the length of ice cover period (15days). Sensitivity analysis revealed that air temperature significantly affects the ice cover duration, water and sediment temperatures, but that dissolved organic carbon concentrations have little effect on the heat fluxes, and water and sediment temperatures. We conclude that the SIWAS model is capable of simulating surface energy fluxes and thermal dynamics for boreal reservoirs in regions where high temporal resolution climate data are not available. SIWAS is suitable for integration into biogeochemical models for simulating a reservoir's carbon cycle. PMID:26849343

  5. Distribution of Major and Trace Elements in a Tropical Hydroelectric Reservoir in Sarawak, Malaysia.

    Science.gov (United States)

    Sim, Siong Fong; Ling, Teck Yee; Nyanti, Lee; Ean Lee, Terri Zhuan; Mohd Irwan Lu, Nurul Aida Lu; Bakeh, Tomy

    2014-01-01

    This paper reports the metals content in water, sediment, macroalgae, aquatic plant, and fish of Batang Ai Hydroelectric Reservoir in Sarawak, Malaysia. The samples were acid digested and subjected to atomic absorption spectrometry analysis for Na, K, Mn, Cr, Ni, Zn, Mg, Fe, Sn, Al, Ca, As, Se, and Hg. The total Hg content was analysed on the mercury analyser. Results showed that metals in water, sediment, macroalgae, aquatic plant, and fish are distinguishable, with sediment and biota samples more susceptible to metal accumulation. The distributions of heavy metals in water specifically Se, Sn, and As could have associated with the input of fish feed, boating, and construction activities. The accumulation of heavy metals in sediment, macroalgae, and aquatic plant on the other hand might be largely influenced by the redox conditions in the aquatic environment. According to the contamination factor and the geoaccumulation index, sediment in Batang Ai Reservoir possesses low risk of contamination. The average metal contents in sediment and river water are consistently lower than the literature values reported and well below the limit of various guidelines. For fishes, trace element Hg was detected; however, the concentration was below the permissible level suggested by the Food and Agriculture Organization. PMID:27437493

  6. Movements of adult Atlantic salmon through a reservoir above a hydroelectric dam: Loch Faskally

    International Nuclear Information System (INIS)

    Movements of adult Atlantic salmon were determined as they migrated through Loch Faskally, a 4-km long hydroelectric reservoir in North-east Scotland. The horizontal and vertical movements of four salmon were monitored for periods of 4-7 days using depth-sensing acoustic transmitters in June-July 1995. Each fish began sustained directed upstream movements within 5.5 h after release at swimming speeds of 0.15-0.40 bl s-1. Three fish reached the head of the loch after 7.25-17 h, but then returned downstream. The four fish remained in the upper half of the loch for 15-51 days, making localized movements. Mean depths of fish were 3.7-4.0 m (max 20.7 m). Two fish were recorded at significantly shallower depths at night during the day. Departure from the loch coincided with periods of high water flow into the reservoir. In May-July 1996, 17 radio-tagged salmon entered Loch Faskally and reached the head of the loch in 3 h-5.8 days (mean 39 h). The durations of stay in the loch varied from 3 h 50 min to 67.4 days (mean 10.9 days). Only two radio-tagged salmon left the loch under conditions of high water flow into the loch. (author)

  7. Hydroelectric microcentrals for small consumption centers; Microcentrales hidroelectricas para pequenos centros de consumo

    Energy Technology Data Exchange (ETDEWEB)

    Angeles A, V. H.; Espino C, F. P. [Universidad Autonoma Metropolitana, Mexico, D. F. (Mexico); Buitron Sanchez, H. C. [Programa de Ahorro de Energia para el Sector Electrico, Mexico, D. F. (Mexico)

    1995-12-31

    The utilization of alternate energy sources (wind power, solar and hydro to small scale) represents an option for the rural electrification. This paper analyzes the case of hydro microgeneration, for this purpose the mechanical and electrical fitting are mainly discussed. For the mechanical re-equipment the turbine types that can be used are fundamentally presented and how they can be selected. As to the electrical re-equipment the different types of electric generators are discussed, as well as the form of selecting them, the operation, the control and the protection in the hydroelectric microcentrals. [Espanol] La utilizacion de fuentes alternas de energia (eolica, solar e hidraulica a pequena escala) representan una alternativa para la electrificacion rural. Este trabajo trata del caso de la microgeneracion hidraulica para la cual se discuten principalmente, alternativas para el equipamiento mecanico y electrico. Para el equipamiento mecanico se presentan fundamentalmente los tipos de turbinas que pueden ser utilizadas y como se pueden seleccionar. En cuanto al equipo electrico se manejan los diferentes tipos de generadores, la forma de seleccionarlos, la operacion, el control y la proteccion en las microcentrales hidroelectricas.

  8. The market of new electric energies. Wind, solar, biomass, hydroelectricity: which perspectives by 2015?

    International Nuclear Information System (INIS)

    This report highlights the consequences of the modification of the energy economic environment, the main trends of the sector, and predictable evolutions. A first part presents the situation of the French market of new electric energy sources in 2011 and its perspectives by 2015 for hydroelectricity, wind energy, photovoltaic energy, and biomass-based energy (production capacities, installations to be connected, electricity production and its share in electricity consumption), and discusses the main challenges faced by the profession. The second part proposes a comparison between these new energies and nuclear energy in terms of economic structure (number of companies, staff, turnover, public investment, and so on), synthetic sheets of the different renewable sectors, and an overview of the World and European markets of new electric energies. The third part identifies the existing actors. The fourth part analyses growth brakes and drivers (French energy policy, economic context for the 2011-2015 period, other factors which have influence on the market). The fifth part proposes a large set of economic and financial indicators for 200 actors of the sector

  9. Problems of hydroelectric development at existing dams: an analysis of institutional, economic, and environmental restraints in Pennsylvania, New Jersey, and Maryland

    Energy Technology Data Exchange (ETDEWEB)

    Taylor, R.J.; Green, L.L.

    1979-04-01

    The methodology that has been developed to analyze the impact of possible government actions on the development of small-scale hydroelectric power in the United States is described. The application of the methodology to a specific region of the United States is also described. Within the Pennsylvania-New Jersey-Maryland (PJM) region, the methodology has been used to evaluate the significance of some of the existing institutional and economic constraints on hydroelectric development at existing dams. The basic process for the analysis and evaluation is estimation of the hydroelectric energy that can be developed for a given price of electricity. Considering the present constraints and a geographical region of interest, one should be able to quantify the potential hydroelectric energy supply versus price. Estimates of how the supply varies with possible changes in governmental policies, regulations, and actions should assist the government in making decisions concerning these governmental functions relative to hydroelectric development. The methodology for estimating the hydroelectric supply at existing dams is included.

  10. Temporal variation in fish community in the tailrace at Três Marias Hydroelectric Dam, São Francisco River, Brazil

    Directory of Open Access Journals (Sweden)

    Raquel Coelho Loures

    2012-10-01

    Full Text Available Damming rivers to generate hydroelectric energy causes a series of changes in the environment, including impacts on the ichthyofauna. Knowledge of the fish community immediately downstream from a hydroelectric dam can help to reduce the negative effects of dam operation, such as fish entrance into the draft tube during turbines maintenance. We evaluated the temporal variation in fish community composition and abundance, near Três Marias Hydroelectric Dam (TMD, and its relationship with abiotic variables. Samples (n = 18 were carried out using gill nets in the tailrace of the dam, over the course of a hydrological year, at six time points during a 24-hour period. Abiotic data were also sampled to assess the relationship with the biotic data. In the tailrace, Characiformes showed the highest richness, while Siluriformes were the most abundant. Of the 33 species sampled, six were migratory. The fish community was significantly different between the dry and wet seasons, with higher abundances during the wet season. In the wet season, the frequency of migratory species in the community rose from 0.7 to 18.3%, and Pimelodus maculatus accounted for 14.5% of the overall abundance. We observed that Characiformes captures occurred mainly in the morning, with peak activity between 5:00 and 9:00 h. Siluriformes showed greater nocturnal activity and were largely captured between 17:00 and 21:00 h. Synchronizing operational maneuvers that represent high risk to the fish with periods of low abundance in the tailrace, i.e., during months of low precipitation, may be a measure to reduce the impact of the operation on the downstream fish community.O barramento de rios para implantação de hidrelétricas causa uma série de modificações no ambiente, gerando impactos sobre a ictiofauna. O conhecimento sobre a comunidade de peixes encontrada imediatamente à jusante pode auxiliar na redução de impactos gerados pela sua operação. Assim, avaliamos as varia

  11. Minidoka Dam Wildlife Impact Assessment: Final Report.

    Energy Technology Data Exchange (ETDEWEB)

    Martin, Robert C.; Meuleman, G. Allyn

    1989-03-01

    A wildlife impact assessment has been developed for the US Bureau of Reclamation's Minidoka Dam and Reservoir in south central Idaho. This assessment was conducted to fulfill requirements of the Fish and Wildlife Program. Specific objectives of this study included the following: select target wildlife species, and identify their current status and management goals; estimate the net effects on target wildlife species resulting from hydroelectric development and operation; recommend protection, mitigation, and enhancement goals for target wildlife species affected by hydroelectric development and operation; and consult and coordinate impact assessment activities with the Northwest Power Planning Council, Bonneville Power Administration, US Bureau of Reclamation, Bureau of Land Management, Shoshone-Bannock Tribes, US Fish and Wildlife Service, Pacific Northwest Utilities Conference Committee, and other entities expressing interest in the project. 62 refs., 2 figs., 11 tabs.

  12. Science evaluation of the environmental impact statement for the lower Churchill hydroelectric generation project to identify deficiencies with respect to fish and fish habitat

    International Nuclear Information System (INIS)

    This report evaluated an environmental impact statement (EIS) submitted by a company proposing to develop a hydroelectric generation project in the lower Churchill River in Labrador. Construction of the facilities will alter the aquatic environment of the river as well as the receiving environment of lakes. The alterations are expected to have an impact on fish and fish habitats. The study evaluated the methods used to describe and predict impacts in the aquatic environment and examined models used for predictions in order to assess uncertainty levels. Results of the evaluation demonstrated that additional efforts are needed to document local knowledge of fish use and fish habitat, and that the magnitude of expected changes to fish habitat must be considered relative to the loss of fish habitat. The study also highlighted areas within the EIS that will require further clarification. A number of the studies used in the EIS had small sample sizes that increased the uncertainty of predictions made using the data. Uncertainties related to potential changes in flushing rates and morphological features was also needed. The impact of direct fish mortality from turbine operations was not addressed in a population context, and further information is needed to evaluate potential project-related effects on a species-by-species basis. 3 refs., 4 tabs.

  13. Fuzzy logic approach for energetic and economic evaluation of hydroelectric projects

    International Nuclear Information System (INIS)

    A mathematical model for energetic and economic evaluation of hydroelectric projects is developed. The main advantage of the proposed methodology is that the model considers uncertainty and vagueness which appears during the decision making process. Due to modeling of variables that are non statistical in their character, fuzzy logic approach is fully incorporated in the model. The first step in energetic evaluation of the hydro power projects is determination of the characteristic of the efficiency of the units to be installed in hydro power plants. For this purpose the model which uses the best characteristics of Artificial Network Fuzzy Inference System (ANFIS) is applied. The method is tested on real systems: HPP Tikves- the power plant in operation and HPP Kozjak - the power plant in construction. The results obtained from practical implementation show that the proposed approach gives superior results than classical polynomial approximation. The model for determining the consumption characteristic of hydro power plant is developed by Sugeno Fuzzy Logic System with polynomials in the consequent part of the rules. Model takes into account the variable gross head of HPP, as well as, the number of units which will be in operation for given output. Modeling of the gross head and power output are performed by expert's design membership functions. This model is practically applied on HPP Tikves for determination of the consumption characteristic for several gross head. The plausible yearly production of electricity from hydro power project, which is important for estimation of the benefit from the project, is calculated by mixed fuzzy-statistical model. hi this approach fuzzy set of the inflow is constructed according to the statistical parameters. The calculation of the production of electricity is realized for a several hydrological conditions which are described by linguistic variables. Finally, Mamdani Fuzzy Inference System with fuzzy number in consequent part

  14. Energy optimization through probabilistic annual forecast water release technique for major storage hydroelectric reservoir

    International Nuclear Information System (INIS)

    One of the important decisions to be made by the management of hydroelectric power plant associated with major storage reservoir is to determine the best turbine water release decision for the next financial year. The water release decision enables firm energy generated estimation for the coming financial year to be done. This task is usually a simple and straightforward task provided that the amount of turbine water release is known. The more challenging task is to determine the best water release decision that is able to resolve the two conflicting operational objectives which are minimizing the drop of turbine gross head and maximizing upper reserve margin of the reservoir. Most techniques from literature emphasize on utilizing the statistical simulations approach. Markovians models, for example, are a class of statistical model that utilizes the past and the present system states as a basis for predicting the future [1]. This paper illustrates that rigorous solution criterion can be mathematically proven to resolve those two conflicting operational objectives. Thus, best water release decision that maximizes potential energy for the prevailing natural inflow is met. It is shown that the annual water release decision shall be made in such a manner that annual return inflow that has return frequency smaller than critical return frequency (fc) should not be considered. This criterion enables target turbine gross head to be set to the well-defined elevation. In the other words, upper storage margin of the reservoir shall be made available to capture magnitude of future inflow that has return frequency greater than or equal to f c. A case study is shown to demonstrate practical application of the derived mathematical formulas

  15. NEURAL CASCADED WITH FUZZY SCHEME FOR CONTROL OF A HYDROELECTRIC POWER PLANT

    Directory of Open Access Journals (Sweden)

    A. Selwin Mich Priyadharson

    2014-01-01

    Full Text Available A novel design for flow and level control in a hydroelectric power plant using Programmable Logic Controller (PLC-Human Machine Interface (HMI and neural cascaded with fuzzy scheme is proposed. This project will focus on design and development of flow and level controller for small scale hydro generating units by implementing gate control based on PLC-HMI with the proposed scheme. The existing control schemes have so many difficulties to manage intrinsic time delay, nonlinearity due to uncertainty of the process and frequent load changes. This study presents the design of neuro controllers to regulate level, cascaded with fuzzy controller to control flow in gate valve to the turbine. A prototype model is fabricated in the laboratory as experimental setup for flow and level control and real time simulation studies were carried out using PID and neural cascaded with fuzzy scheme. The designed prototype model is fabricated with 5 levels in the upper tank and 2 levels in the lower tank. Based on the outputs of the level sensors from the upper and lower tanks, the ladder logic is actuated. This project work uses PLC of Bernecker and Rainer (B and R Industrial Automation inbuilt with 20 digital inputs and provides 12 potential free outputs to control the miniaturized process depicted in this work. Finally, the performance of the proposed neural cascaded with fuzzy scheme is evaluated by simulation results by comparing with conventional controllers output using real time data obtained from the hydro power plant. The advantages of the proposed neural cascaded with fuzzy scheme over the existing controllers are highlighted.

  16. NOVEL TSUNAMI BARRIERS AND THEIR APPLICATIONS FOR HYDROELECTRIC ENERGY STORAGE, FISH FARMING, AND FOR LAND RECLAMATION

    Directory of Open Access Journals (Sweden)

    Hans J. Scheel

    2014-10-01

    Full Text Available The tsunami hazard can be mitigated if the destructive waves generated from earthquakes and landslides can be reflected by a stable submerged vertical barrier before striking coastal communities or important structures. Building such deep walls by conventional submarine technology is difficult. The present study describes the principle and the erection of such submarine defensive walls by a relatively simple efficient and economic technology. This technology is based on lowering high- strength steel fences with horizontal anchors, or two parallel steel fences with distance holders, into the sea and fixing them with rocks deposited from top. Dredged material like gravel or sand can be used for additional filling. This Tsunami-Flooding Barrier (TFB extends a few meters above sea level and carries on top a concrete supply and service road protected on both sides against storm waves by concrete walls. Replaceable surge stoppers (parapets, wave return walls prevent overtopping and erosion of the seaward barrier face. The TFBs protect the coastline against tsunami and the highest storm waves from hurricanes, but also can provide protection from oil spills or other contaminations from the ocean and thus protect flora, fauna, coral reefs and beaches. Channels and gates allow navigation and can be closed quickly upon a tsunami or storm warning. The construction costs can be eventually compensated by using the reservoirs between coast and barriers for hydroelectric energy storage (using pump-turbines in the barriers or for fish-farming, or alternatively the reservoir can be filled with rocks, rubble, gravel, sand and covered with soil in order to reclaim new land. Tidal energy can be generated by installing turbines within these barriers. Also, this submarine architecture may be applied to protect pillars of bridges and offshore platforms, and for erecting “roads” into the sea to connect near-shore platforms and wind-parks with the coast and

  17. Fish passage mitigation of impacts from hydroelectric power projects in the United States

    International Nuclear Information System (INIS)

    Obstruction of fish movements by dams continues to be the major environmental issue facing the hydropower industry in the US. Dams block upstream migrations, which can cut off adult fish form their historical spawning grounds and severely curtail reproduction. Conversely, downstream-migrating fish may be entrained into the turbine intake flow and suffer turbine-passage injury or mortality. Hydroelectric projects can interfere with the migrations of a wide variety of fish. Maintenance, restoration or enhancement of populations of these species may require the construction of facilities to allow for upstream and downstream fish passage. The Federal Energy Regulatory Commission (FERC), by law, must give fish and wildlife resources equal consideration with power production in its licensing decisions, must be satisfied that a project is consistent with comprehensive plans for a waterway (including fisheries management plans), and must consider all federal and state resource agency terms and conditions for the protection of fish and wildlife. As a consequence, FERC often requires fish passage mitigation measures as a condition of the hydropower license when such measures are deemed necessary for the protection of fish. Much of the recent research and development efforts of the US Department of Energy's Hydropower Program have focused on the mitigation of impacts to upstream and downstream fish passage. This paper descries three components of that effort: (1) a survey of environmental mitigation measures at hydropower sites across the country; (2) a critical review of the effectiveness of fish passage mitigation measures at 16 case study sites; and (3) ongoing efforts to develop new turbine designs that minimize turbine-passage mortality

  18. Potential Coastal Pumped Hydroelectric Energy Storage Locations Identified using GIS-based Topographic Analysis

    Science.gov (United States)

    Parsons, R.; Barnhart, C. J.; Benson, S. M.

    2013-12-01

    Large-scale electrical energy storage could accommodate variable, weather dependent energy resources such as wind and solar. Pumped hydroelectric energy storage (PHS) and compressed energy storage area (CAES) have life cycle energy and financial costs that are an order of magnitude lower than conventional electrochemical storage technologies. However PHS and CAES storage technologies require specific geologic conditions. Conventional PHS requires an upper and lower reservoir separated by at least 100 m of head, but no more than 10 km in horizontal distance. Conventional PHS also impacts fresh water supplies, riparian ecosystems, and hydrologic environments. A PHS facility that uses the ocean as the lower reservoir benefits from a smaller footprint, minimal freshwater impact, and the potential to be located near off shore wind resources and population centers. Although technologically nascent, today one coastal PHS facility exists. The storage potential for coastal PHS is unknown. Can coastal PHS play a significant role in augmenting future power grids with a high faction of renewable energy supply? In this study we employ GIS-based topographic analysis to quantify the coastal PHS potential of several geographic locations, including California, Chile and Peru. We developed automated techniques that seek local topographic minima in 90 m spatial resolution shuttle radar topography mission (SRTM) digital elevation models (DEM) that satisfy the following criteria conducive to PHS: within 10 km from the sea; minimum elevation 150 m; maximum elevation 1000 m. Preliminary results suggest the global potential for coastal PHS could be very significant. For example, in northern Chile we have identified over 60 locations that satisfy the above criteria. Two of these locations could store over 10 million cubic meters of water or several GWh of energy. We plan to report a global database of candidate coastal PHS locations and to estimate their energy storage capacity.

  19. Anthropic contribution on pollution in hydroelectric reservoirs: the case of Sao Simao's hydroelectric power plant - GO/MG, Brazil; Contribuicao antropica na poluicao de reservatorios hidreletricos: o caso da Usina Hidreletrica de Sao Simao - GO/MG

    Energy Technology Data Exchange (ETDEWEB)

    Fonseca, Gizele Araujo Borba da

    2010-02-15

    This study aimed to evaluate the contribution of anthropogenic pollution in hydroelectric reservoirs through a case study of the Sao Simao Hydropower. The literature relates the problem of eutrophication with the addition of nutrients (nitrogen and phosphorus) in excess, resulting in water pollution. Through data for both tributary rivers and the reservoir, it was found that the Sao Simao dam presents a framework for eutrophication. We made an analysis to see which tributary rivers were the main sources of nutrients released into the waters of the reservoir and a survey of possible human activities that are contributing to the intake of nutrients in these tributaries. (author)

  20. Water quality assessment of fifth-order tributaries of the reservoir at the Marechal Mascarenhas de Morais Hydroelectric Power Station in the Rio Grande watershed (State of Minas Gerais, Brazil Avaliação da qualidade da água dos afluentes de quinta ordem do reservatório da Usina Hidrelétrica de Marechal Mascarenhas de Morais na bacia hidrográfica do médio rio Grande (Minas Gerais, Brasil

    Directory of Open Access Journals (Sweden)

    Douglas de Pádua Andrade

    2012-09-01

    Full Text Available Aim: This study assessed the water quality from the springs and river mouths of the fifth-order tributaries which compose the reservoir of Marechal Mascarenhas de Morais HPS in the middle Rio Grande watershed, Minas Gerais, Brazil. Methods: It has been studied 14 tributaries distributed in the reservoir, two points for tributary - spring and river mouth. Eighteen limnological variables added to the Rapid Assessment Protocol and Trophic Level Index were evaluated. The benthic macroinvertebrates had been collected by the use of a granulometric sieve and a Petersen-type sampler. Results: The cluster analysis of limnological data revealed the existence of two tributary groups. Group I consisted of eutrophic tributaries degraded by human activities, while group II exhibited good water quality and well-preserved environments. Group I was divided into two subgroups, Ia tributaries were characterized by being altered by human activities, while the Ib subgroup was composed of highly impacted tributaries. By ordering the PCA, it can be observed spatial segregation of groups, where the most polluted tributaries were separated from those which are better preserved. A total of 8,987 individuals belonging to 36 families of macroinvertebrates were identified. The family Chironomidae was the most abundant. There was no significant difference in total abundance and the richness of macroinvertebrates taxa inhabiting springs, by those who inhabiting the river mouths. Conclusions: It was noticed that most of the tributaries which supply and composes the reservoir are already degraded and have low quality water. It is observed that the human presence drastically affected water quality and faunal composition of tributaries. Thus, it is necessary a complementary study of the tributaries in working with issues related to reservoirs, as these components have direct influence on the water quality and composition of these lentic environments.Objetivos: O trabalho avaliou

  1. MODELING AND STUDY OF HYDROELECTRIC GENERATING SETS OF SMALL HYDRO POWER PLANTS WITH FREQUENCY-CONTROLLED PERMANENT MAGNET SYNCHRONOUS GENERATORS

    Directory of Open Access Journals (Sweden)

    R. I. Mustafayev

    2016-01-01

    Full Text Available Currently, the hydroelectric generating sets of small HPPs with Pelton turbines employ as their generating units conventional synchronous generators with electromagnetic excitation. To deal with the torque pulsatile behaviour, they generally install a supplementary flywheel on the system shaft that levels the pulsations. The Pelton turbine power output is adjusted by the needle changing water flow in the nozzle, whose advancement modifies the nozzle area and eventually – the flow. They limit the needle full stroke time to 20–40 sec. since quick shutting the nozzle for swift water flow reduction may result in pressure surges. For quick power adjustment so-called deflectors are employed, whose task is retraction of water jets from the Pelton turbine buckets. Thus, the mechanical method of power output regulation requires agreement between the needle stroke inside the turbine nozzles and the deflector. The paper offers employing frequency-controlled synchronous machines with permanent magnets qua generating units for the hydroelectric generating sets of small HPPs with Pelton turbines. The developed computer model reveals that this provides a higher level of adjustability towards rapid-changing loads in the grid. Furthermore, this will replace the power output mechanical control involving the valuable deflector drive and the turbine nozzle needles with electrical revolution rate and power output regulation by a frequency converter located in the generator stator circuit. Via frequency start, the controllable synchronous machine ensures stable operation of the hydroelectric generating set with negligibly small amount of water (energy carrier. Finally, in complete absence of water, the frequency-relay start facilitates shifting the generator operation to the synchronous capacitor mode, which the system operating parameter fluctograms obtained through computer modeling prove. 

  2. Technological solutions of decentralized generation of hydroelectricity for those demands that cannot be attended by conventional electric with centralized generation

    Energy Technology Data Exchange (ETDEWEB)

    Signoretti, Valdir Tesche; Veras, Carlos Alberto Gurgel Rudi; Els, Henri Van [Universidade de Brasilia, Brasilia, DF (Brazil). Faculdade de Tecnologia. Dept. de Engenharia Mecanica], e-mail: gurgel@unb.br

    2010-07-01

    A source of energy stable and reliable and of acceptable cost is a basic requisite for the development of a given region can give-if full. Access to energy is important basis of human existence, essential to the satisfaction of basic needs such as food, clothing, and housing and also of mobility and communication. However, the dependency world burning of fossil fuels for energy generation and supply of a demand constantly increasing, both in industrialized countries and those in development, already threatening the ecological stability of the Earth. At the same time, conflicts by distribution of the last reserves these resources non-renewable threaten significantly to civil society. Adding to the breakneck speed in which humanity consumes the energetic sources and the obvious devastation of nature has an unequal distribution in consumption and access to energy. Renewable sources and energy efficiency are viable and necessary, especially because they can be the key to reduce wastefulness and extend the access to energy. In this way, there is a significant influence on economic and social inclusion of population excluded, generating employment and income with costs local and global environmental reduced compared to traditional forms and unsustainable generation and use of energy. This work is a study involving issues related to rural electrification from hydroelectricity, especially related to those isolated communities of the Amazon region that are lacking this form of energy, presented a general review since the origins of hydroelectricity in Brazil, as well as a national panorama electric exclusion as well as a scenario Amazon's supply of electricity. Finally presenting-if the main technologies available for hydroelectric generation for these isolated communities. (author)

  3. Monitoring of surge tanks in hydroelectric power plants using fuzzy control; Ueberwachung von Wasserschloessern in Wasserkraftwerken mit Fuzzy-Control

    Energy Technology Data Exchange (ETDEWEB)

    Lin, J.C.

    2000-07-01

    Surge tanks are used to reduce pressure variations caused by fluid transients in high-head hydroelectric power plants. Occasionally load increases have to be limited to prevent the surge tank from draining due to excessive demands of flow. A control concept based on fuzzy logic was developed for governing the load changes of hydroelectric power plants. In order to achieve an optimal control behaviour and simultaneously to avoid the draining of surge tanks, the speed of load increases is automatically adjusted by a fuzzy conclusion depending on the height and the gradient of the water level in the surge tank, the reservoir level and the sum of load increases. The hydroelectric power plant Achensee of Tiroler Wasserkraftwerke AG in Austria is taken as an example to demonstrate the characteristics of the control concept. In comparison with a conventional control concept, the operation of load increases using the fuzzy concept proves to be more flexible and unrestricted. (orig.) [German] Ein Wasserschloss dient zur Verminderung von Druckschwankungen im Wasserfuehrungssystem von Hochdruckanlagen. Gelegentlich muss man die Lastaufnahme so beschraenken, dass das Wasserschloss nicht durch uebermaessige Wasserentnahme leerlaeuft. Fuer die Leistungsregelung eines Wasserkraftwerks wurde ein Konzept entwickelt, das auf der Fuzzy-Control in Verbindung mit der klassischen Regelung beruht. Um ein optimales Regelverhalten zu erhalten und gleichzeitig das Leerlaufen des Wasserschlosses zu vermeiden, wird die Geschwindigkeit der Lastaufnahme in Abhaengigkeit von der Hoehenkote und dem Gradienten des Wasserschlosspegels, dem Pegel des Oberwassers und der Groesse der geforderten Lasterhoehung automatisch eingestellt. Die Untersuchung erfolgt am Beispiel des Achenseekraftwerkes der Tiroler Wasserkraftwerke AG, Oesterreich. Im Vergleich mit einer konventionellen Regelung ergibt sich mit dem Fuzzy-Konzept eine flexiblere und freizuegigere Lastaufnahme. (orig.)

  4. Case study analysis of the legal and institutional obstacles and incentives to the development of the hydroelectric power of the Boardman River at Traverse City, Michigan

    Energy Technology Data Exchange (ETDEWEB)

    None,

    1980-05-01

    An analytic description of one decision-making process concerning whether or not to develop the hydroelectric potential of the Boardman River is presented. The focus of the analysis is on the factor that the developers considered, or should consider in making a responsible commitment to small-scale hydroelectric development. Development of the Boardman River would occur at the five dam sites. Two existing dams, owned by the county, previously generated hydroelectricity, as did a third before being washed out. One dam has never been utilized. It is owned by the city which also owns the washed-out area. The study concludes that hydroelectric power is feasible at each. Grand Traverse County and Traverse City would engage in a joint venture in developing the resource. Chapter I presents a detailed description of the developers, the river resource, and the contemplated development. Chapter II is an analysis of the factors affecting the decision making process. Chapter III summarizes the impact of the more significant barriers and incentives and presents recommendations that, if implemented, will favorably affect decisions to develop small-scale hydroelectric generation capability.

  5. Feasibility study on the demonstrative test on the hybrid mini hydroelectric power generation technology. 2; Hybrid gata mini suiryoku hatsuden gijutsu ni kakawaru jissho shiken kanosei chosa. 2

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-03-01

    A study was made for the purpose of electrification of unelectrified zones of the mountainous areas in developing countries using extremely small hydroelectric power facilities. The target for this project is a development of a micro hydroelectric power system with a size of about 5kW, which is estimated regarding that 1 village has 80 houses and each house needs electricity of 60W. In the study, the low-head system using a weir of irrigation channels in Subang pref. of West Java state was selected by the evaluation of access, stability of flow rate, natural conditions, etc. The hydroelectric power plant is of a flow-in method in which water is taken from the left bank and is injected/discharged to the downstream of the left bank. As the hybrid complementary power source, hybrid battery with a two-hour charging time at peak and a capacity of 3.5kWh was considered. When estimating the construction cost of the hybrid micro hydroelectric power system and equalizing by durable years, the operational cost per kW is 15 times higher than the benefits which local people receive. It was judged to be difficult to say that the micro hydroelectric power system is economically feasible. It was predicted that the financial profit during the demonstrative test is good, according to a trial calculation of income from power rates and the operational cost. 18 refs., 90 figs., 53 tabs.

  6. Environmental impact analysis of the hydroelectric power development sheme in the River Grunnaai in Seljord municipality, Telemark

    International Nuclear Information System (INIS)

    This report discusses the possible environmental consequences of a planned hydroelectric power development of the river Grunnaai, Norway. The consequences are found to be small, provided the proper counter measures are taken. Without counter measures, there may be moderate consequences on fish populations and botanical conditions, directly dependent on the changed water flow. The greatest value of the area concerned lies in its unspoiled wilderness character. There are extensive lists of birds and mammals and plant species registered in the river valley. 51 refs., 7 figs., 4 tabs

  7. Fish damage by turbine passage at the hydroelectric power plant in the river Maas near Linne, Netherlands

    International Nuclear Information System (INIS)

    In the Netherlands three large hydroelectric power plants are in operation. Fish, migrating along these plants, can be injured by the turbines, which may result in death of the fish. The injuries were investigated in two parts. This report deals with damage to eel. In part 2 attention is paid to the damage of squamous fishes. The survey at the title plant was executed in the autumn of 1990 and the spring of 1991. The percentage of injuries was determined for three turbine flows. The percentage increases with the length of the eel and when the turbine flow decreases

  8. Project finance of hydroelectric power plants in Brazil; 'Project finance' de usinas hidroeletricas no Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Ribeiro Filho, Valfredo de Assis; Ramos, Maria Olivia de Souza [Universidade Salvador (UNIFACS), BA (Brazil)

    2008-07-01

    The aim of this paper is to discuss the modality of project finance of financing of enterprises, which is the main modality of structuring of hydroelectric projects in Brazil. In the discussion will be highlighted the importance of contracts EPC (Engineering, Search and Construction) in the structuring of project finances. This financing model has particular characteristics related to risk sharing and financial flexibility that enable the financing of projects with long-term capital, however, due to participation of various actors and the nature of the structure of project finance, the negotiation and drafting of contracts are always very complex.

  9. Experience of Minas Gerais Energetic Company (CEMIG) in feasibility studies from hydroelectric power plants: energetic-economic studies

    International Nuclear Information System (INIS)

    The experience of Minas Gerais Energetic Company (CEMIG) - Brazil, on the use of dimensioning methodology for hydroelectric power plant from the Coordinated Group of Planning System was described, showing the problems with its use and the solutions, mainly the reservoir and the dimension of installed potential. It was concluded that the calculation procedures of the marginal costs for dimensioning, so as to become these costs more representative in future structure of the Brazilian generator park and less dependent to the oscillation due to conjuncture problems, must be re-evaluated. (C.G.C.). 7 refs, 3 figs, 1 tab

  10. Atmospheric nitrogen deposition budget in a subtropical hydroelectric reservoir (Nam Theun II case study, Lao PDR)

    Science.gov (United States)

    Adon, Marcellin; Galy-Lacaux, Corinne; Serça, Dominique; Guerin, Frederic; Guedant, Pierre; Vonghamsao, Axay; Rode, Wanidaporn

    2016-04-01

    With 490 km² at full level of operation, Nam Theun 2 (NT2) is one of the largest hydro-reservoir in South East Asia. NT2 is a trans-basin hydropower project that diverts water from the Nam Theun river (a Mekong tributary) to the Xe Ban Fai river (another Mekong tributary). Atmospheric deposition is an important source of nitrogen (N), and it has been shown that excessive fluxes of N from the atmosphere has resulted in eutrophication of many coastal waters. A large fraction of atmospheric N input is in the form of inorganic N. This study presents an estimation of the atmospheric inorganic nitrogen budget into the NT2 hydroelectric reservoir based on a two-year monitoring (July 2010 to July 2012) including gas concentrations and precipitation. Dry deposition fluxes are calculated from monthly mean surface measurements of NH3, HNO3 and NO2 concentrations (passive samplers) together with simulated deposition velocities, and wet deposition fluxes from NH4+ and NO3- concentrations in single event rain samples (automated rain sampler). Annual rainfall amount was 2500 and 3160 mm for the two years. The average nitrogen deposition flux is estimated at 1.13 kgN.ha-1.yr-1 from dry processes and 5.52 kgN.ha-1.yr-1 from wet ones, i.e., an average annual total nitrogen flux of 6.6 kgN.ha-1.yr-1 deposited into the NT2 reservoir. The wet deposition contributes to 83% of the total N deposition. The nitrogen deposition budget has been also calculated over the rain tropical forest surrounding the reservoir. Due to higher dry deposition velocities above forested ecosystems, gaseous dry deposition flux is estimated at 4.0 kgN.ha-1.yr-1 leading to a total nitrogen deposition about 9.5 kgN.ha-1.yr-1. This result will be compared to nitrogen deposition in the African equatorial forested ecosystems in the framework of the IDAF program (IGAC-DEBITS-AFrica).

  11. Numerical dynamic analysis of Chiti single arch dam related to hydroelectric power generation

    Energy Technology Data Exchange (ETDEWEB)

    Abbasi, H. [Islamic Azad Univ., Tehran (Iran, Islamic Republic of); Hosseini, Y.; Jalaly, H. [Ab-Niru Consulting Engineers, Tehran (Iran, Islamic Republic of); Aghajani, K. [Elam Univ., Elam (Iran, Islamic Republic of)

    2006-07-01

    The Chiti dam is a single arch hydroelectric power generation dam located on the Taloogh River in Iran. This paper provided details of the response spectrum method used to design the optimal load conditions and slope of the dam in relation to earthquake protection. The amount of horizontal earthquake acceleration at the dam site was determined based on local calculations of scenarios of an operating basis earthquake (OBE), a maximum design earthquake (MDE) and a maximum credible earthquake (MCE). The response spectrum was defined with 5 per cent damping as the basis of the earthquake calculation. Hydrodynamic pressure was applied in loadings and the dam was analyzed with and without the effect of hydrodynamic pressure. The compressive strength of the concrete was considered as 28 MPa, and the properties of bed rock were determined on geotechnical and geological studies. Hydrodynamic pressure was calculated based on upstream water levels in the reservoir of the arch dam and applied to the model as added mass. The model also considered the weight of the dam body, uplift pressure, and heat changes in stable conditions. The hydrodynamic pressure of water was applied as additional mass to the upstream face of the arch dam. The additional mass was determined based on dam height. The dynamic analysis of the dam was performed using response spectrum data. The model analysis was performed with and without the effect of hydrodynamic pressure. The 3-D model of the dam body was made using the ANSYS finite element program which combined the response spectrum method with temperature load, uplift pressure and water pressure parameters. Results showed that the maximum displacement of the dam body for the various earthquake levels measured was 11.6, 14, and 15.6 mm respectively. The response spectrum analysis performed with hydrodynamic pressure showed displacement values of 22.4, 24.8, and 26.4 mm. Stress and strain values obtained by the model were within allowable amount for

  12. Assessment of Substance Abuse Behaviors in Adolescents’: Integration of Self-Control into Extended Parallel Process Model

    OpenAIRE

    de Witte, K.; E Mirzaee; AR Hidarnia; A KAZEMNEJAD; F Shafii; P. Azad Fallah; H Allahverdipour

    2005-01-01

    Introduction: An effective preventive health education program on drug abuse can be delivered by applying behavior change theories in a complementary fashion. Methods: The aim of this study was to assess the effectiveness of integrating self-control into Extended Parallel Process Model in drug substance abuse behaviors. A sample of 189 governmental high school students participated in this survey. Information was collected individually by completing researcher designed questionnaire and a uri...

  13. Environmental costs associated to the electric generation: hydroelectric versus natural gas thermoelectric; Custos ambientais associados a geracao eletrica: hidreletricas versus termeletricas a gas natural

    Energy Technology Data Exchange (ETDEWEB)

    Reis, Marcelo de Miranda

    2001-01-15

    This works presents the methodologies for valuation of the environmental costs resulting from the main damages of the cycles of electric energy arrange through hydroelectric and natural gas thermoelectric. Initially theoretical concepts are established, embracing: the description of the valuation methodologies, the possible ways of damages internalization in the value of the products, the environmental impacts of hydroelectric and natural gas thermoelectric in these fuel cycles, and the methodologies that can be applied for value the main damages caused by the impacts. Then case studies are developed, with application of the methodologies in the hydroelectric plants of Simplicio and Serra da Mesa, and in the thermoelectric complex composed for RioGen and RioGen Merchant plants. Finally, conclusions and recommendations for a better future application in Brazil of the valuation methodologies are presented. (author)

  14. Report on the workshop examining the potential effects of hydroelectric development on Beluga of the Nelson River Estuary, Winnipeg, Manitoba, November 6 and 7, 1990

    International Nuclear Information System (INIS)

    A summary is presented of discussions and conclusions at a workshop held to examine the potential effects of hydroelectric development on beluga whales of the Nelson River estuary in Manitoba. Background information is provided on the estuary, beluga whales and their use of arctic and subarctic estuaries, and hydroelectric development on the Nelson River. Potential impacts of such development on the whales are reviewed in the categories of direct effects of changes in physical-chemical conditions (temperature and discharge), indirect effects of disturbances mediated through the food chain, and effects on socioeconomic conditions that may affect beluga whales. Since the biology of beluga whales and other phenomena of interest in this study are poorly known, recommendations are made for research and monitoring activities in the Nelson River estuary. In general, the workshop participants felt that changes in the estuary due to hydroelectric development would not be large enough to affect beluga whales strongly. 34 refs., 1 fig

  15. GHG emissions from hydroelectric reservoirs in tropical and equatorial regions: Review of 20 years of CH4 emission measurements

    International Nuclear Information System (INIS)

    Greenhouse gas (GHG) emissions from reservoirs have been under the microscope for more a decade now. In particular, the high CH4 emissions reported in warm systems have tarnished the green credentials of hydroelectricity in terms of GHG emissions. Reliable estimates of CH4 emissions are crucial, since CH4 has a greenhouse warming potential of 25 and because, unlike CO2, CH4 emissions should be counted for the entire life cycle of a reservoir. Up to now, the highest CH4 emissions from reservoirs have been measured in warm latitudes, thus adding an argument against the use of hydroelectricity in these regions. However, to our knowledge, GHG emissions have been measured for only 18 of the 741 large dams (>10 MW, according to the ICOLD register) listed in the tropics. This article reviews the limited scientific information available and concludes that, at this time, no global position can be taken regarding the importance and extent of GHG emissions in warm latitudes. - Highlights: → On the 741 large dams in the tropics (ICOLD), GHG emission measurements have been made on 18. → Standard methodologies have only recently been proposed; past studies are difficult to compare. → Available data (except Petit Saut) have a high level of uncertainty and may not be representative. → Reservoir gross emissions are rarely higher than those from their thermal power plant equivalent. → No global position can be taken regarding the importance of GHG emissions in warm latitudes.

  16. Hydroelectric power generation in an Alpine basin: future water-energy scenarios in a run-of-the-river plant

    Science.gov (United States)

    Bongio, Marco; Avanzi, Francesco; De Michele, Carlo

    2016-08-01

    We investigate scenarios of hydroelectric power generation for an Alpine run-of-the-river plant in 2050. To this end, we include a conversion from streamflow to energy in a hydrological model of the basin, and we introduce a set of benchmark climate scenarios to evaluate expected future production. These are a "future-like-present" scenario assuming future precipitation and temperature inputs to be statistically equivalent to those observed during the recent past at the same location, a "warmer-future" scenario, which considers an additional increase in temperature, and a "liquid-only" scenario where only liquid precipitation is admitted. In addition, two IPCC-like climatic scenarios (RCP 4.5 and RCP 8.5) are considered. Uncertainty in glaciers' volume is accounted by initializing the hydrological model with two different inventories of glaciers. Ensemble results reveal that 1) an average decrease between -40% and -19% of hydroelectric power generation in 2050 is predicted at the plant considered (with respect to present condition); 2) an average decrease between -20% and -38% of cumulative incoming streamflow volume at the plant is also predicted, again with respect to present condition; 3) these effects are associated with a strong average decrease of the volume of glaciers (between -76% and -96%, depending on the initial value considered). However, Monte Carlo simulations show that results are also prone to high uncertainties. Implications of these results for run-of-the-river plants are discussed.

  17. Short term hydroelectric power system scheduling with wind turbine generators using the multi-pass iteration particle swarm optimization approach

    International Nuclear Information System (INIS)

    This paper uses multi-pass iteration particle swarm optimization (MIPSO) to solve short term hydroelectric generation scheduling of a power system with wind turbine generators. MIPSO is a new algorithm for solving nonlinear optimal scheduling problems. A new index called iteration best (IB) is incorporated into particle swarm optimization (PSO) to improve solution quality. The concept of multi-pass dynamic programming is applied to modify PSO further and improve computation efficiency. The feasible operational regions of the hydro units and pumped storage plants over the whole scheduling time range must be determined before applying MIPSO to the problem. Wind turbine power generation then shaves the power system load curves. Next, MIPSO calculates hydroelectric generation scheduling. It begins with a coarse time stage and searching space and refines the time interval between two time stages and the search spacing pass by pass (iteration). With the cooperation of agents called particles, the near optimal solution of the scheduling problem can be effectively reached. The effects of wind speed uncertainty were also considered in this paper. The feasibility of the new algorithm is demonstrated by a numerical example, and MIPSO solution quality and computation efficiency are compared to those of other algorithms

  18. Evaluation for turbine implementation for a micro hydroelectric power plant; Avaliacao para implantacao de uma turbina para uma microcentral hidreletrica

    Energy Technology Data Exchange (ETDEWEB)

    Alves, Gilberto Manoel; Halmeman, Maria Cristina Rodrigues; Oliveira, Franciene Gois [Universidade Estadual Paulista (UNESP), Botucatu, SP (Brazil). Programa de Pos-graduacao em Energia na Agricultura; Seraphim, Odivaldo Jose [Universidade Estadual Paulista (UNESP), Botucatu, SP (Brazil). Dep. de Engenharia Rural

    2008-07-01

    In this work it was analyzed the viability technical and economical of turbines to micro hydroelectric headquarters as an alternative to consumers not served by electric energy in isolated areas. It was used a experimental methods to create an estimative and a evaluation of the hydroelectric potential, through hydrological criteria in the area and, thus, be able to note if there is viability for its use. Some kinds of turbines made by the national industry were verified, analyzing the technical and economical characteristics and in function of the hydro energetic-conditions of the area. The results shoed that a micro-headquarters serves the necessities and expectations of the owner at the electric energy supply. It was noted that the expenses are smaller comparing to the other expenses know in the literature, from national factories. Even though the limiting factor is the distance from the production to the consumer, the potency of 18.4 kw was enough to satisfy the local necessities. The installation of de micro headquarters will bring enhances and facilities by the fact that it represents a big social importance for the area. (author)

  19. Juvenile competitive bottleneck in the production of brown trout in hydroelectric reservoirs due to intraspecific habitat segregation

    International Nuclear Information System (INIS)

    Resource utilization and growth of brown trout were studied in four deep (mean depths 16.2 - 37.5 m) Norwegian hydroelectric reservoirs by benthic and pelagic gillnet sampling. In all the reservoirs supplementary stockings are carried out. The brown trout were spatially segregated according to size as the habitat use of small individuals (< 180-220 mm) was completely restricted to benthic habitats, whereas larger individuals mainly utilized the upper strata of pelagic waters. It is argued that the pelagic habitat is the more rewarding, and that small-sized brown trout are forced into the less favourable benthic habitat through social interactions with larger specimens. This is supported by an increase in growth of brown trout from their third to fifth year of life, which seems to be related to the shift from benthic to pelagic behaviour. It is also argued that the conditions for small-sized brown trout may be a bottleneck in the capacity to produce brown trout in hydroelectric reservoirs with limited benthic feeding conditions, despite ample access to food in pelagic habitats. When evaluating the possibility of increasing the yield of brown trout through supplementary stockings, it is therefore important to consider food and growth conditions for all age and size groups of brown trout. In reservoirs with poor benthic feeding conditions it may be necessary to stock with brown trout of sizes that are large enough to utilize pelagic habitat, to avoid the limiting benthic living stage. (Author)

  20. Design and performance of radio telemetry systems for assessing juvenile fish passage at three hydroelectric dams: Chapter 6.5

    Science.gov (United States)

    Beeman, John W.; Hockersmith, Eric; Stevenson, John R.

    2012-01-01

    Telemetry provides a powerful and flexible tool for studying fish and other aquatic animals, and its use has become increasingly commonplace. However, telemetry is gear intensive and typically requires more specialized knowledge and training than many other field techniques. As with other scientific methods, collecting good data is dependent on an understanding of the underlying principles behind the approach, knowing how to use the equipment and techniques properly, and recognizing what to do with the data collected. This book provides a road map for using telemetry to study aquatic animals, and provides the basic information needed to plan, implement, and conduct a telemetry study under field conditions. Topics include acoustic or radio telemetry study design, tag implantation techniques, radio and acoustic telemetry principles and case studies, and data management and analysis.

  1. Report on the development perspectives of the hydroelectric production in France; Rapport sur les perspectives de developpement de la production hydroelectrique en France

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2006-03-15

    This report, presented to the Ministry of the Economy, the Finances and the Industry, has been realized by the high ranking of the sustainable development of the Ministry. It presents the synthesis of the working group study at the second half year 2005 and proposes to the Ministry some practical actions to develop the hydroelectric production in France. After a presentation of the hydro electric-power challenges and potential, the author discusses the regulatory context of the hydroelectric power development, the conditions of this development and proposes some actions. (A.L.B.)

  2. The influence of the Gilgel-Gibe hydroelectric dam in Ethiopia on caregivers' knowledge, perceptions and health-seeking behaviour towards childhood malaria

    Directory of Open Access Journals (Sweden)

    Duchateau Luc

    2010-02-01

    Full Text Available Abstract Background Malaria remains the most important public health problem in tropical and subtropical areas. Mothers' or caregivers' ability to recognize childhood malaria-related morbidity is crucial as knowledge, attitudes and health seeking behavior of caregivers towards childhood malaria could influence response to signs of the disease. Methods A total of 1,003 caregivers in 'at-risk' villages in close proximity to the Gilgel-Gibe hydroelectric dam in south-western Ethiopia, and 953 caregivers in 'control' villages further away from the dam were surveyed using structured questionnaires to assess their knowledge, perceptions and health seeking behaviour about childhood malaria. Results Malaria (busa was ranked as the most serious health problem. Caregivers perceived childhood malaria as a preventable ('at-risk' 96%, 'control' 86% and treatable ('at-risk' 98% and 'control' 96% disease. Most caregivers correctly associated the typical clinical manifestations with malaria attacks. The use of insecticide-treated nets (ITNs was mentioned as a personal protective measure, whereas the role of indoor residual spraying (IRS in malaria prevention and control was under-recognized. Most of the caregivers would prefer to seek treatment in health-care services in the event of malaria and reported the use of recommended anti-malarials. Conclusion Health education to improve knowledge, perceptions and health-seeking behaviour related to malaria is equally important for caregivers in 'at risk' villages and caregivers in 'control' villages as minimal differences seen between both groups. Concluding, there may be a need of more than one generation after the introduction of the dam before differences can be noticed. Secondly, differences in prevalence between 'control' and 'at-risk' villages may not be sufficient to influence knowledge and behaviour.

  3. Active tectonics and Holocene versus modern catchment erosion rates at 300 MW Baspa II hydroelectric power plant (NW Himalaya, India)

    Science.gov (United States)

    Draganits, Erich; Grasemann, Bernhard; Gier, Susanne; Hofmann, Christa-Charlotte; Janda, Christoph; Bookhagen, Bodo; Preh, Alexander

    2015-04-01

    The Baspa River is one of the most important tributaries to the Sutlej River in the NW Himalaya (India). Its catchment is 1116 km2 in size, ranges from c. 6400 m asl to 1770 m asl and contains India's largest private hydroelectric facility, the 300 MW Baspa II. Geologically, the hydroelectric installation is located in the Higher Himalayan Crystalline, just above the active Karcham Normal Fault, which is reactivating the Early Miocene Main Central Thrust, one of the principal Himalayan faults. The area is seismically active and mass-movements are common. Around 8200 yrs BP the Baspa was dammed by a rock-avalanche dam, leading to the formation of the originally c. 260 m deep palaeo-lake Sangla palaeo-lake. Detailed sedimentological investigations and radiocarbon dating indicate that the palaeo-lake was completely filled with sediments until c. 5100 yrs BP. This makes the Sangla palaeo-lake to a very rare example of a mass-movement dam with very long duration and its lacustrine sediments represent a valuable archive for geological processes and environmental proxies within the Baspa catchment during the c. 3100 years of its existence - which are the aim of our study. At least 5 levels of soft-sediment deformation have been recorded in the exposed part of the lacustrine sediments of Sangla palaeo-lake, including brecciated laminae, overturned laminae, folds, faults and deformation bands, separated by undeformed deposits. They are interpreted as seismites, indicating at least 5 earthquakes within 2500 years strong enough to cause liquefaction. The 300 MW Baspa II hydro-electric power plant has been built exactly on top of this palaeo-lake. This special location represents a very rare possibility to evaluate the short-term, river load and hydrological parameters measured during the planning and operational stages of Baspa II with the long-term parameters gained from the palaeo-lake sediments from the catchment. This data show that the Mid-Holocene erosion rates of the

  4. 78 FR 19477 - Freedom Falls, LLC; Notice of Availability of Environmental Assessment

    Science.gov (United States)

    2013-04-01

    ... regulations, 18 CFR part 380 (Order No. 486, 52 FR 47879), the Office of Energy Projects has reviewed the application for exemption from licensing for the Freedom Falls Hydroelectric Project, to be located on Sandy... Energy Regulatory Commission Freedom Falls, LLC; Notice of Availability of Environmental Assessment...

  5. Model for analysis and definition of the governor constants in hydroelectric power; Modelo para analise e definicao das constantes do regulador em usinas hidreletricas

    Energy Technology Data Exchange (ETDEWEB)

    Andrade, Jose Geraldo Pena de; Koelle, Edmundo; Luvizotto Junior, Edevar [Universidade Estadual de Campinas, SP (Brazil). Faculdade de Engenharia Civil. Dept. de Hidraulica e Saneamento

    1997-07-01

    This paper presents a complete mathematical and computer model which allows simulating a generic hydroelectric power plant under steady state and transitory regimes, in the extensive time, and also the analysis of the oscillating flows resulting from excitation sources present in the installation, such as vortices in the suction pipe during partial load operation.

  6. A self-adaptive chaotic particle swarm algorithm for short term hydroelectric system scheduling in deregulated environment

    International Nuclear Information System (INIS)

    This paper proposes a short term hydroelectric plant dispatch model based on the rule of maximizing the benefit. For the optimal dispatch model, which is a large scale nonlinear planning problem with multi-constraints and multi-variables, this paper proposes a novel self-adaptive chaotic particle swarm optimization algorithm to solve the short term generation scheduling of a hydro-system better in a deregulated environment. Since chaotic mapping enjoys certainty, ergodicity and the stochastic property, the proposed approach introduces chaos mapping and an adaptive scaling term into the particle swarm optimization algorithm, which increases its convergence rate and resulting precision. The new method has been examined and tested on a practical hydro-system. The results are promising and show the effectiveness and robustness of the proposed approach in comparison with the traditional particle swarm optimization algorithm

  7. The effects of hydroelectric gates on rivers, hydro-ecological diagnostic and management aid. The Fontauliere example (Ardeche)

    International Nuclear Information System (INIS)

    Hydropower generation induces artificial fluctuations of flow and thus of hydrodynamic parameters in rivers, downstream of hydroelectric impoundments. On the Fontauliere river (Ardeche basin, France), the ecological effects of two different hydro-peaking regimes were tested and compared to a reference upstream reach. Fish, invertebrate and epilithic communities were surveyed in these reaches. The results enables to classify the factors responsible for the observed effects. The base flow between peaks was the most important for the studied site. When it was too low, aquatic communities were de-structured in comparison with the natural reach. These results enabled to suggest a current velocity threshold to respect in order to determine acceptable base flow for this type of stream. They also enabled to guide for the impact evaluation of hydro-peaking sites. An ecological diagnosis should include the study of the structure and composition of the communities. (author). 22 refs., 2 figs., 4 tabs

  8. Design of an Adaptive Power Regulation Mechanism and a Nozzle for a Hydroelectric Power Plant Turbine Test Rig

    Science.gov (United States)

    Mert, Burak; Aytac, Zeynep; Tascioglu, Yigit; Celebioglu, Kutay; Aradag, Selin; ETU Hydro Research Center Team

    2014-11-01

    This study deals with the design of a power regulation mechanism for a Hydroelectric Power Plant (HEPP) model turbine test system which is designed to test Francis type hydroturbines up to 2 MW power with varying head and flow(discharge) values. Unlike the tailor made regulation mechanisms of full-sized, functional HEPPs; the design for the test system must be easily adapted to various turbines that are to be tested. In order to achieve this adaptability, a dynamic simulation model is constructed in MATLAB/Simulink SimMechanics. This model acquires geometric data and hydraulic loading data of the regulation system from Autodesk Inventor CAD models and Computational Fluid Dynamics (CFD) analysis respectively. The dynamic model is explained and case studies of two different HEPPs are performed for validation. CFD aided design of the turbine guide vanes, which is used as input for the dynamic model, is also presented. This research is financially supported by Turkish Ministry of Development.

  9. Floristic and phytosociology in dense "terra firme" rainforest in the Belo Monte Hydroelectric Plant influence area, Pará, Brazil.

    Science.gov (United States)

    Lemos, D A N; Ferreira, B G A; Siqueira, J D P; Oliveira, M M; Ferreira, A M

    2015-08-01

    The objective of the present study was to characterise the floristic and phytosociological composition on a stretch of dense "Terra Firme" rainforest located in the Belo Monte hydroelectric plant area of influence, located in the state of Pará, Brazil. All trees with DAP >10 cm situated in 75 permanent plots of 1 ha were inventoried. 27,126 individuals trees (361 ind.ha-1), distributed in 59 botanical families, comprising 481 species were observed. The families with the largest number of species were Fabaceae (94), Araceae (65) and Arecaceae (43), comprising 43.7% of total species. The species Alexa grandiflora (4.41), Cenostigma tocantinum (2.50) and Bertholletia excelsa (2.28) showed the highest importance values (IV). The ten species with greater IV are concentrated (22%). The forest community has high species richness and can be classified as diverse age trees, heterogeneous and of medium conservation condition. PMID:26691099

  10. Valuation of the environmental impacts of the Kayraktepe dam/hydroelectric project, Turkey: An exercise in contingent valuation

    International Nuclear Information System (INIS)

    This paper describes and evaluates the environmental impacts of the Kayraktepe Dam and Hydroelectric Power Plant in Turkey. The contingent valuation method is used to estimate the project's local environmental costs. The average local rural annual willingness to pay for the restoration of the environmental impacts of the project is found to be USD 300 person-1. Loss of forestry and agricultural benefits from the reservoir area that will be inundated are estimated to be USD 12.66 mill. yr-1. When the Kayraktepe Project's external costs are internalized, its benefit cost ratio falls from 1.35 to 0.84, indicating that the project is economically undesirable and the decision for its construction needs to be reconsidered 26 refs, 1 fig, 5 tabs

  11. Reliability of hydroelectric generation components, systems and units; Confiabilidad de componentes, sistemas y unidades de generacion hidroelectrica

    Energy Technology Data Exchange (ETDEWEB)

    Sanchez Sanchez, Ramon; Torres Toledano, Gerardo; Franco Nava, Jose Manuel [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1996-12-31

    This article presents a methodology for the calculation of the reliability of components, systems and hydroelectric generating units, as well as the scope of a computational system for the evaluation of such reliability. In the case of the reliability calculation of components and systems, the computer programs is not limited to hydro stations and can be used in other type of systems. [Espanol] En este articulo se presenta una metodologia para calcular la confiabilidad de componentes, sistemas y unidades de generacion hidroelectrica, asi como el alcance de un sistema computacional para evaluar dicha confiabilidad. En el caso del calculo de confiabilidad de componentes y sistemas, el programa de computo no se limita a centrales hidroelectricas y puede utilizarse en otro tipo de sistemas.

  12. Impact of the Sainte-Marguerite 3 hydroelectric reservoir on the mercury exposure of local fish consumers

    International Nuclear Information System (INIS)

    This study examined fish mercury levels in a freshwater impoundment flooded as part of the Sainte-Marguerite-3 hydroelectric generating station. The study compared mercury levels obtained before the area was flooded in 1997 with mercury exposure surveys obtained in 2006. Mercury levels in the fish have increased by factors ranging from 4 to 8. Total mercury concentrations have reached 0.78 μg per g in 400-mm lake whitefish and 1.85 μg per g in 700-mm northern pike. Non-native fishers consumed significantly more local fish on a monthly basis after the area was flooded. Native Innu fishers consumed less fish. Average hair mercury concentrations for non-native fish consumers remained unchanged, which mercury levels in native fish consumers decreased significantly.

  13. Spatial-temporal dynamics and sources of total Hg in a hydroelectric reservoir in the Western Amazon, Brazil.

    Science.gov (United States)

    Pestana, I A; Bastos, W R; Almeida, M G; de Carvalho, D P; Rezende, C E; Souza, C M M

    2016-05-01

    Damming rivers to construct hydroelectric reservoirs results in a series of impacts on the biogeochemical Hg cycle. For example, modifying the hydrodynamics of a natural watercourse can result in the suspension and transport of Hg deposits in the water column, which represents an exposure risk for biota. The objective of this study was to evaluate the influences of seasonality on the dispersion of total Hg in the Hydroelectric Power Plant (HPP)-Samuel Reservoir (Porto Velho/Brazil). Sampling campaigns were performed during the three following hydrological periods characteristic of the region: low (Oct/2011), ebbing (May/2012), and high (Feb/2013) water. Sediment profiles, suspended particulate matter (SPM), and aquatic macrophytes (Eicchornia crassipes and Oryza spp.) were collected, and their Hg concentrations and isotopic and elemental C and N signatures were determined. The drainage basin significantly influenced the SPM compositions during all the periods, with a small autochthonous influence from the reservoir during the low water. The highest SPM Hg concentrations inside the reservoir were observed during the high water period, suggesting that the hydrodynamics of this environment favor the suspension of fine SPM, which has a higher Hg adsorption capacity. The Hg concentrations in the sediment profiles were ten times lower than those in the SPM, indicating that large particles with low Hg concentrations were deposited to form the bottom sediment. Hg concentrations were higher in aquatic macrophyte roots than in their leaves and appeared to contribute to the formation of SPM during the low water period. In this environment, Hg transport mainly occurs in SPM from the Jamari River drainage basin, which is the primary source of Hg in this environment. PMID:26846239

  14. Sources and metabolism of carbon in a Canadian boreal hydroelectric reservoir

    International Nuclear Information System (INIS)

    Average emission values of 1 to 2 g of CO2·m-2·d-1 were observed for hydroelectric reservoirs located in northern Quebec. Here, using isotopic approaches, we try to document the sources and pathways of this CO2 with special attention to seasonal patterns and to the cycling of organic carbon in the reservoir Robert-Bourassa . It is located in the Boreal forest area, south-east of Hudson Bay and is part of a series of 8 reservoirs (including notably LG-2 and LG-3). It has a mean surface area of 2835 km2 and was flooded in 1979. The isotopic monitoring of the reservoir started in 1998. However, we will essentially refer here to data collected during the summers of 2001 and 2002. Three sampling strategies were retained: i) sampling in surface waters of ∼15 sites scattered across the reservoir, ii) sampling along three water columns (from shallow to deep sites), and iii) sampling of of inflow and outflow waters of the reservoir, once a month during 1 year. At each sampling site, in situ measurements included: water and air temperatures, pH, alkalinity and wind speed. Samples were collected at each site for the measurement of concentrations of dissolved organic carbon (DOC), C/N ratios of dissolved organic matter (DOM) and isotopic compositions of dissolved inorganic carbon (DIC), DOC, air CO2 and dissolved organic nitrogen (DON). Samples were also collected for the measurements of 14C-concentrations in DOM and of δ18O-values of dissolved oxygen (DO). δ13C-values of DIC vary, throughout the reservoir, from -9 per mille to -14 per mille vs VPDB (i.e., from -13 to -19, for the corresponding dissolved CO2) whereas δ13C-values in the overlying air-CO2 vary from -9 to -11 per mille. Both show a shift towards more depleted values under windy conditions. δ13C-values in DOC vary little in the reservoir. They average -27.1±0.2 per mille. C/N ratios of DOM vary between 12 and 38 with a mean of 30. The 14C activity of DOM, at the deepest sampling station vary between 106

  15. Ecologically justified regulatory provisions for riverine hydroelectric power plants and minimum instream flow requirements in diverted streams; Oekologisch begruendete, dynamische Mindestwasserregelungen bei Ausleitungskraftwerken

    Energy Technology Data Exchange (ETDEWEB)

    Jorde, K.

    1997-12-31

    The study was intended to develop a model versatile enough to permit quantification of various water demand scenarios in connection with operation of riverine hydroelectric power plants. Specific emphasis was to be placed on defining the minimum instream flow to be maintained in river segments because of the elementary significance to flowing water biocinoses. Based on fictitious minimum water requirements, various scenarious were simulated for flow regimes depending on power plant operation, so as to establish a system for comparative analysis and evaluation of resulting economic effects on power plant efficiency on the one hand, and the ecologic effects on the aquatic habitat. The information derived was to serve as a basis for decision-making for regulatory purposes. For this study, the temporal and spatial variability of the flow regime at the river bed in a river segment was examined for the first time. Based on this information, complemented by information obtained from habitat simulations, a method was derived for determination of ecologic requirements and their incorporation into regulatory water management provisions. The field measurements were carried out with the FST hemisphere as a proven and most efficient and reliable method of assessing flow regimes at river beds. Evaluation of the measured instream flow data characterising three morphologically different segments of diverted rivers was done with the CASIMIR computer code. The ASS models derived were used for comparative assessment of existing regulatory provisions and recommended amendments determining required minimum instream flow in diverted rivers. The requirements were defined taking as a basis data obtained for three different years. (orig./CB) [Deutsch] Ziel der Arbeit war die Entwicklung eines Modellverfahrens, das flexibel die Quantifizierung unterschiedlicher Nutzansprueche an Laufwasserkraftanlagen ermoeglicht. Insbesondere der Erhalt einer gewissen Dynamik, die fuer

  16. Financial evaluation of the integration of satellite technology for snow cover measurements at a hydroelectric plant. (Utilization of Radarsat I in the La Grande river basin, Quebec)

    International Nuclear Information System (INIS)

    The emergence, on the markets, of new technologies evokes, for the potential users, a lot of questions concerning the implementation and operation costs associated with these technologies. Nevertheless, for a lot of users, costs should be considered with the benefits these technologies are able to generate. The benefit-cost analysis is a useful tool for a financial evaluation of the transferability of the technology. This method has been selected to evaluate the eventual implementation of remote sensing technologies for snow cover measurements in the La Grande river basin (Quebec, Canada). Indeed, a better assessment of the snow water equivalent leads to a better forecasting of the water inputs due to the snowmelt. Thus, the improvement of the snow cover monitoring has direct impact on hydroelectric reservoir management. The benefit-cost analysis was used to compare three acquisition modes of the satellite Radarsat 1 (ScanSAR, Wide and Standard). The costs considered for this project are: R and D costs and operations costs (the purchase of images and costs of ground truth measurements). We evaluated the raw benefits on the basis of reducing the standard deviation of predicted inflows. The results show that the ScanSAR mode is the primary remote sensing tool for the monitoring of the snow cover, on an operational basis. With this acquisition mode, the benefit-cost ratios range between 2.3:1 and 3.9:1, using a conservative 4% reduction of the standard deviation. Even if the reduction is only 3%, ScanSAR remains profitable. Due to the large number of images needed to cover all the territory, the Standard and Wide modes are penalized by the purchase and the processing costs of the data and with delays associated to the processing. Nevertheless, with these two modes, it could be possible to work with a partial coverage of the watershed, 75% being covered in 4 days in Wide mod. The estimated B/C ratios (1.5:1 and 2:1) confirm the advantages of this alternative

  17. Low methane (CH4) emissions downstream of a monomictic subtropical hydroelectric reservoir (Nam Theun 2, Lao PDR)

    Science.gov (United States)

    Deshmukh, Chandrashekhar; Guérin, Frédéric; Labat, David; Pighini, Sylvie; Vongkhamsao, Axay; Guédant, Pierre; Rode, Wanidaporn; Godon, Arnaud; Chanudet, Vincent; Descloux, Stéphane; Serça, Dominique

    2016-03-01

    Methane (CH4) emissions from hydroelectric reservoirs could represent a significant fraction of global CH4 emissions from inland waters and wetlands. Although CH4 emissions downstream of hydroelectric reservoirs are known to be potentially significant, these emissions are poorly documented in recent studies. We report the first quantification of emissions downstream of a subtropical monomictic reservoir. The Nam Theun 2 Reservoir (NT2R), located in the Lao People's Democratic Republic, was flooded in 2008 and commissioned in April 2010. This reservoir is a trans-basin diversion reservoir which releases water into two downstream streams: the Nam Theun River below the dam and an artificial channel downstream of the powerhouse and a regulating pond that diverts the water from the Nam Theun watershed to the Xe Bangfai watershed. We quantified downstream emissions during the first 4 years after impoundment (2009-2012) on the basis of a high temporal (weekly to fortnightly) and spatial (23 stations) resolution of the monitoring of CH4 concentration. Before the commissioning of NT2R, downstream emissions were dominated by a very significant degassing at the dam site resulting from the occasional spillway discharge for controlling the water level in the reservoir. After the commissioning, downstream emissions were dominated by degassing which occurred mostly below the powerhouse. Overall, downstream emissions decreased from 10 GgCH4 yr-1 after the commissioning to 2 GgCH4 yr-1 4 years after impoundment. The downstream emissions contributed only 10 to 30 % of total CH4 emissions from the reservoir during the study. Most of the downstream emissions (80 %) occurred within 2-4 months during the transition between the warm dry season (WD) and the warm wet season (WW) when the CH4 concentration in hypolimnic water is maximum (up to 1000 µmol L-1) and downstream emissions are negligible for the rest of the year. Emissions downstream of NT2R are also lower than expected because

  18. Genesis of flora and vegetation of the Danube lowland in relation to the hydroelectric power structures Gabcikovo-Nagymaros

    International Nuclear Information System (INIS)

    This study is directed to analysis of long term development of flora and vegetation of the flood plain ecosystems in the Danube lowland. This genesis is divided into four periods, connected with the regulation of the Danube river from the long past until present. Single consideration based on real state prior to and after the construction of the Variant C and the reaction of the vegetation to the to the changed hydropedological conditions. The given data are related to the Slovak side of the ecosystems, but in the case of realisation of the proposed measures in Hungary could be valid after certain corrections also for the right-bank part of the Danube river. The study do not cover negative consequences of the building of the hydroelectric power structures Gabcikovo-Nagymaros, like removing of the flood pain forest in the extent of 3267 ha on the Slovak side, synecological changes of the draining part under the Hrusov reservoir and in the narrow shore belt along the set aside the Danube river-bed. But they can be solved by suitable management. Attention is paid also towards the fact, that the questions of vascular plant biodiversity are being observed only now. But there are no evidences on lowering of phytogenefund from the present experience during the two years since the damming. On the contrary, new biotopes are created by watering of the river arm system in the inundation area and a huge limozic and littoral zone around the Hrusov reservoir gives the assumptions for the richness of the biodiversity. Indicated changes as the consequences of historical adaptations of the Danube river can be demonstrated. Our experience since the end of the fifties is such, that by the decrease of waters after a wide adaptations of the Danube river-bed and after excluding of the sedimentation of deposits by the influence of dams in the Austrian and German stretch of the Danube river, and on the contrary, after the continuation of the erosion trend of the Danube's river-bed, flood

  19. Study on the environmental costs of the hydroelectric power plants impact on the amazon region biodiversity; Estudos dos custos ambientais do impacto de usinas hidreletricas na biodiversidade da regiao amazonica

    Energy Technology Data Exchange (ETDEWEB)

    Pinguelli Rosa, Luiz; Sherrill, Elisabeth I.; Santos, Marco Aurelio dos

    1996-03-01

    This document aims to correlate the hydroelectric power plants constructed and forecasted to the amazon region with biodiversity questions, focusing the related environmental costs under two viewpoints: the environment economy and project location attributes 63 refs., 7 tabs.

  20. Methane and carbon dioxide emission from hydroelectric power plants in the Amazon region compared with the equivalent thermoelectric power plants; Emissoes de metano e dioxido de carbono de hidreletricas na Amazonia comparadas as de termeletricas equivalentes

    Energy Technology Data Exchange (ETDEWEB)

    Pinguelli Rosa, Luiz; Schaeffer, Roberto; Santos, Marco Aurelio dos

    1996-03-01

    This document studies the theoretical and applied aspects related to the emission of gases responsible by the greenhouse effect from the hydroelectric and thermoelectric power plants 48 refs., 3 figs., 12 tabs.

  1. South Fork Tolt River Hydroelectric Project : Adopted Portions of a 1987 Federal Energy Regulatory Commission`s Final Environmental Impact Statement.

    Energy Technology Data Exchange (ETDEWEB)

    United States. Bonneville Power Administration.

    1992-07-01

    The South Fork Tolt River Hydroelectric Project that world produce 6.55 average megawatts of firm energy per year and would be sited in the Snohomish River Basin, Washington, was evaluated by the Federal Energy Regulatory commission (FERC) along with six other proposed projects for environmental effects and economic feasibility Based on its economic analysis and environmental evaluation of the project, the FERC staff found that the South Fork Tolt River Project would be economically feasible and would result in insignificant Impacts if sedimentation issues could be resolved. Upon review, the BPA is adopting portions of the 1987 FERC FEIS that concern the South Fork Tolt River Hydroelectric Project and updating specific sections in an Attachment.

  2. Proceedings on the seminar on small hydroelectric installations: Practice report and current development; Beitraege zum Seminar Kleinwasserkraft: Praxis und aktuelle Entwicklung

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-12-31

    This seminar on small hydroelectric installations informs on aspects of construction and administrative aspects. But above all, questions of machinery are dealt with. The book gives an overview of turbine types, topical recent developments in the sector of small hydroelectric power stations, and modern opportunities for fast and inexpensive design of power station components. Beyond the discussion of technical issues, the seminar wants to further contacts between science, turbine manufacturers, consultants and plant operators. (orig.) [Deutsch] Das Seminar Kleinwasserkraft gibt eine Uebersicht ueber bauliche Gestaltung und behoerdliche Aspekte. Vorallem behandelt es aber maschinenbauliche Problemstellungen. Es zeigt einen Ueberblick ueber Turbinentypen, aktuelle Neuentwicklungen im Kleinwassersektor, sowie moderne Moeglichkeiten zum schnellen und preiswerten Design von Kraftwerkskomponenten. Neben dem technischen Teil dient das Seminar auch der Foerderung des Kontakts zwischen Wissenschaft, Turbinenherstellern, Consultants und Anlagenbetreibern. (orig.)

  3. Application of fuzzy logic in mapping the environmental impacts of hydroelectric power plants; Aplicacao da logica difusa no mapeamento de impactos ambientais em usinas hidreletricas

    Energy Technology Data Exchange (ETDEWEB)

    Melo, M.N.; Lambert-Torres, G.; Silva, L.E. Borges da [Universidade Federal de Itajuba (UNIFEI), MG (Brazil)], Emails: germanoltorres@gmail.com, leborges@unifei.edu.br; Rissino, S.; Silva, M.F. da [Universidade Federal de Rondonia (UFRO), Porto Velho, RO (Brazil)], e-mails: srissino@gmail.com, felipe@unir.br

    2009-07-01

    During the stages prior to installation of a large enterprise, there is an obligation to obtain an environmental license for its effectiveness. However, defining the relevance of an environmental impact generated by changes elapsed in a region, is something subjective, since some variables present qualitative definitions. Aiming to interrelate the variables that influence the environmental impacts in hydroelectric plants, was made the mapping of terms natural resources and degradation of the environment, and its defining variables, based on the theory of fuzzy logic. The construction of fuzzy propositions was based on the manipulation of a rule base, with the 'if' antecedent 'then' consequent structure. It was concluded that the use of fuzzy propositions for the study of environmental impact is an effective method to map the environmental impact caused by construction of a hydroelectric plant, because it defines the degree of influence of impact on the environment.

  4. Effects of a micro hydroelectric power plant upon population abundance, mobility and reproduction behaviour of European grayling T. thymallus and brown trout S. trutta in a salmonid river

    OpenAIRE

    Ovidio, Michaël; Paquer, Frédéric; Capra, Hervé; Lambot, Francis; Gérard, Pierre; Dupont, Etienne; Philippart, Jean-Claude

    2004-01-01

    This study examines the potential effects of a new micro hydroelectric power plant (MHPP) on the behaviour (habitat use, movements) and population abundance of European grayling (T. thymallus) and brown trout (S. trutta) in the Lhomme (Belgian Ardennes). Thirteen grayling and five brown trout were captured before their spawning period and were manually radio-tracked up to 6 times a week. Population density and biomass were estimated into two different sampling sectors with electri...

  5. The Impacts of Wind Speed Trends and Long-term Variability in Relation to Hydroelectric Reservoir Inflows on Wind Power in the Pacific Northwest

    OpenAIRE

    Cross, Benjamin David

    2013-01-01

    The use of wind power is growing rapidly in the Pacific Northwest (PNW) due to environmental concerns, decreasing costs, strong wind speeds, and the desire to minimize the impacts of streamflow variability on electricity prices and system flexibility through diversification. In hydroelectric dominated systems, like the PNW, the benefits of wind power can be maximized by accounting for the relationship between long term variability in wind speeds and reservoir inflows. Clean energy policies in...

  6. The Impacts of Wind Speed Trends and 30-Year Variability in Relation to Hydroelectric Reservoir Inflows on Wind Power in the Pacific Northwest

    OpenAIRE

    Cross, Benjamin D.; Karen E Kohfeld; Joseph Bailey; Cooper, Andrew B.

    2015-01-01

    In hydroelectric dominated systems, the value and benefits of energy are higher during extended dry periods and lower during extended or extreme wet periods. By accounting for regional and temporal differences in the relationship between wind speed and reservoir inflow behavior during wind farm site selection, the benefits of energy diversification can be maximized. The goal of this work was to help maximize the value of wind power by quantifying the long-term (30-year) relationships between ...

  7. The stakes of the hydroelectric power in the integrated management of the Basins. Which place for the EPTB; Les enjeux de l'hydroelectricite dans la gestion integree des bassins versants. Quelle place pour les EPTB

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2003-12-01

    In the framework of a sustainable development, the EPTB (Public, Territorial Institutions of Basins) need an evolution of the regulations concerning the management of the hydroelectric power (areas of the Adour, Dordogne, Garonne and Lot). This document presents in two parts the context and the stakes of the hydroelectric concession: the concessions specifications and the analysis of the main articles, the tariffs, taxes and the environment constraints. (A.L.B.)

  8. Downstream environmental impacts of dams: case study Tucurui Hydroelectric Plant, PA; Impactos ambientais a jusante de hidreletricas: o caso da usina de Tucurui, PA

    Energy Technology Data Exchange (ETDEWEB)

    Manyari, Waleska Valenca

    2007-12-15

    The hydroelectric resources of the Amazon region are considered a competitive alternative despite the structural problems they entail. Concerning the latter, plans to build large-scale dams in the region have drawn criticism mainly on account of the loss of forest cover in areas flooded by dam reservoirs and the conflicts concerning the relocation of indigenous and riverside communities in the region. This study seeks to contribute to better understanding of the environmental issue in the Amazon by focusing attention on the downstream effects of dams, which have large-scale, hitherto neglected ecological repercussions. The impact of dams extends well beyond the area surrounding the artificial lakes they create, harming rich Amazon wetland ecosystems. The morphology of dammed rivers changes in response to new inputs of energy and matter, which may in turn destroy certain biotypes. This is a remote-sensing-based case study of the Tucurui hydroelectric scheme in the Amazon state of Para. Attention is drawn to the need to take into account effects on alluvial rivers downstream from hydroelectric power plants when it comes to making planning decisions, as part of a sustainable energy policy. (author)

  9. Analysis of environmental issues related to small scale hydroelectric development. II. Design considerations for passing fish upstream around dams. Environmental Sciences Division Publication No. 1567

    Energy Technology Data Exchange (ETDEWEB)

    Hildebrand, S.G. (ed.)

    1980-08-01

    The possible requirement of facilities to move migrating fish upstream around dams may be a factor in determining the feasibility of retrofitting small dams for hydroelectric generation. Basic design considerations are reported that should be evaluated on a site-specific basis if upstream fish passage facilities are being considered for a small scale hydroelectric project (defined as an existing dam that can be retrofitted to generate 25 MW or less). Information on general life history and geographic distribution of fish species that may require passage is presented. Biological factors important in the design of upstream passage facilities are discussed: gas bubble disease, fish swimming speed, oxygen consumption by fish, and diel and photo behavior. Three general types of facilities (fishways, fish locks, and fish lifts) appropriate for upstream fish passage at small scale hydroelectric projects are described, and size dimensions are presented. General design criteria for these facilities (including fish swimming ability and behavior) and general location of facilities at a site are discussed. Basic cost considerations for each type of passage facility, including unit cost, operation and maintenance costs, and costs for supplying attraction water, are indicated.

  10. Analysis of legal obstacles and incentives to the development of low-head hydroelectric power in Maine

    Energy Technology Data Exchange (ETDEWEB)

    None,

    1980-05-01

    The legal and institutional obstacles to the development of small-scale hydroelectric energy at the state level in Maine is discussed. The Federal government also exercises extensive regulatory authority in the area. The dual regulatory system is examined. The first step any developer of small-scale hydropower must take is to acquire right, title, or interest in the real property. In Maine, that step requires acquisition in some form of both river banks, the river bed, and where necessary, the land needed for the upstream impoundment area. The developer must acquire the river banks to be considered a riparian owner. Classification as a riparian is important, for only a use of water by a riparian owner is deemed a reasonable use and hence a legal use. A non-riparian could not draw water from a stream to increase the water level of an impoundment area on another stream. Apart from the usual methods of land acquisition involving sale, lease, or perhaps gift, Maine has two somewhat unique methods a developer may use for property acquisition. These methods, authorized by statute, are use of the abandoned dams law and use of the Mill Dam Act for flowage of upstream impoundment areas.

  11. Carbon stored in forest plantations of Pinus caribaea, Cupressus lusitanica and Eucalyptus deglupta in Cachí Hydroelectric Project

    Directory of Open Access Journals (Sweden)

    Marylin Rojas

    2014-06-01

    Full Text Available Forest plantations are considered the main carbon sinks thought to reduce the impact of climate change. Regarding many species, however, there is a lack of information in order to establish metrics on accumulation of biomass and carbon, principally due to the level of difficulty and the cost of quantification through direct measurement and destructive sampling. In this research, it was evaluated carbon stocks of forest plantations near the dam of hydroelectric project Cachí, which belongs to Instituto Costarricense de Electricidad. 25 unit samples were evaluated along some plantations that contain three different species. 30 Pinus caribacea trees, 14 Cupressus lusitanica and 15 Eucalyptus deglupta were extracted. The biomass was quantified by means of the destructive method. First of all, every component of the tree was weighed separately; then, sampling was obtained in order to determine the dry matter and the carbon fraction. 110 biomass samples from the three species were analyzed in laboratory, including all the components (leaves, branches, shaft, and root. The carbon fraction varied between 47,5 and 48,0 for Pinus caribacea; between 32,6 and 52,7 for Cupressus lusitanica, and beween 36,4 and 50,3% for Eucalyptus deglupta. The stored carbon was 230, 123, and 69 Mg ha-1 in plantations of P. caribaea, C. lusitanica and E. deglupta, respectively. Approximately, 75% of the stored carbon was detected in the shaft.

  12. Spatial Distribution of Fragmentation by Diversion-Typed Hydroelectric Plant Exploitation in East Baoxing Catchment from 1999 to 2013

    Directory of Open Access Journals (Sweden)

    Yong Huang

    2015-03-01

    Full Text Available In the Southwest Mountain areas, successive hydroelectric plant exploitation by humans on Baoxing River can exert a significant impact on regional landscape composition and structure. Taking East Baoxing River Catchment as the study area, the authors developed a method combining Moving Window based Calculation and Spatial Correlation Analysis to analyze the relationship between fragmentation and related spatial factors at a local scale, aiming to examine the spatial distribution rule of the landscape fragmentation and provide scientific support for the conservation of landscape ecology in the study area. From the perspective of the whole study area, although there is no clear relationship between the selected factors and the Change of DIVISION (CODIV, the comparison of R values in the latter interval (2006–2013 with those in the former interval (1999–2006 proves that the human activities of plant building have led to the increase in the DIVISION value. At the local scale, results show that a high positive relationship exists between slope and CODIV (R = 0.857, p-value = 0.05, while the relationship between river distance and CODIV is highly negative (R = −0.837, p-value = 0.01. A medium strong negative relationship lies between elevation and CODIV, while there is almost no linear relationship between distance from Qiaoqi reservoir and CODIV.

  13. Behind an ambitious megaproject in Asia: The history and implications of the Bakun hydroelectric dam in Borneo

    Energy Technology Data Exchange (ETDEWEB)

    Sovacool, Benjamin K., E-mail: bsovacool@nus.edu.sg [Lee Kuan Yew School of Public Policy, National University of Singapore, Oei Tiong Ham Building, 469C Bukit Timah Road, Singapore 259772 (Singapore); Bulan, L.C. [Lee Kuan Yew School of Public Policy, National University of Singapore, Oei Tiong Ham Building, 469C Bukit Timah Road, Singapore 259772 (Singapore)

    2011-09-15

    Using a case-study, inductive, narrative approach, this article explores the history, drivers, benefits, and barriers to the Bakun Hydroelectric Project in East Malaysia. Situated on the island of Borneo, Bakun Dam is a 204 m high concrete face, rock filled dam on the Balui River in the Upper Rajang Basin in the rainforests of Sarawak. Bakun Dam and its affiliated infrastructure could be the single largest and most expensive energy project ever undertaken in Southeast Asia. Based on data collected through site visits, original field research in Sarawak, and more than 80 research interviews, the article begins by teasing out the complex history and drivers behind the Bakun project before identifying a set of potential social, political, and economic benefits the project could deliver. It then delves into six sets of barriers in the technical, economic, political, legal and regulatory, social, and environmental realms. We find that Bakun illustrates how centralized energy megaprojects, while ostensibly championed for reasons of economies of scale and the ability to bring about transformational change in the shortest period of time, often fail to address broader development goals such as fighting energy poverty and improving the livelihoods of the local communities they are supposed to serve. - Highlights: > Bakun Dam is concrete face, rock filled dam on the Balui River in the Upper Rajang Basin in the rainforests of Sarawak. > The project faces technical, economic, political, legal and regulatory, social, and environmental barriers. > We conclude the project will fail to fight energy poverty or improve the livelihoods of local populations.

  14. A GIS-model for predicting the impact of climate change on shore erosion in hydroelectric reservoirs

    International Nuclear Information System (INIS)

    Shoreline erosion affects inland lakes and hydroelectric reservoirs in several ways. This poster described a vector-based geographic information system (GIS) model designed to predict changes in shore zone geometry, top-of-bluff recession, and eroded sediment volumes. The model was designed for use in Manitoba Hydro's reservoirs in northern Manitoba, and simulated near-shore downcutting and bank recession caused by wind-generated waves. Parameters for the model included deep water wave energy, and water level fluctuations. Effective wave energy was seen as a function of the water level fluctuation range, wave conditions, and near-shore slope. The model was validated by field monitoring studies that included repeated shore zone transect surveys and sediment coring studies. Results of the study showed that the model provides a systematic method of predicting potential changes in erosion associated with climatic change. The volume and mass of eroded sediment predicted for the different modelling scenarios will be used as input data for future sedimentation models. tabs., figs

  15. Geração hidrelétrica, termelétrica e nuclear Hydroelectric, thermal and nuclear generation

    Directory of Open Access Journals (Sweden)

    Luiz Pinguelli Rosa

    2007-04-01

    Full Text Available O artigo apresenta a situação da produção de energia elétrica no Brasil e expõe os problemas para a implementação de um novo modelo no setor energético e para a inclusão de termelétricas em um grande sistema hidrelétrico. Questões ambientais são consideradas, particularmente as emissões de gás de efeito estufa. Atenta ainda para a possível construção de novos reatores nucleares no Brasil e destaca a importância da conservação energética e do uso de fontes de energia renovável.The situation of electric energy generation in Brazil is presented here, showing the problems in the implementation of the new model for the Power Sector, as well as in the inclusion of thermal plants in a very big hydroelectric system. Environment issues are considered, in particular the greenhouse gas emissions. The article pays attention to the possible construction of new nuclear reactors in Brazil. It is pointed out the importance of energy conservation and of using renewable energy sources.

  16. Impacts of hydro-electric reservoir on populations of caribou and grizzly bear in southern British Columbia

    International Nuclear Information System (INIS)

    The impacts of a hydroelectric reservoir on populations of caribou and grizzly bear were studied north of Revelstoke, British Columbia. Information collected for 3 years prior to flooding was compared with data collected in 1984-85. The reservoir did not obstruct movement of caribou and animals did not attempt crossing during periods when ice conditions were hazardous. Evidence suggested that predator avoidance was the most important determinant of habitats used in spring. The cleared reservoir was an important habitat for caribou in the spring because of the abundant food and security from predators it offered. A potential decline in caribou recruitment was noted in 1985 coincident with reservoir flooding. Mitigative recommendations include clearing logged areas adjacent to formerly used reservoir habitats and maintaining movement corridors of mature timber between seasonal habitats. Inconclusive evidence suggested that the reservoir was a barrier to grizzly movement. Spring movements of grizzly were mainly related to finding good feeding sites. Avalanche paths in side drainages were the principal habitats used. Cleared areas did provide an abundance of food comparable to naturally disturbed habitats. The main impact of flooding was to shift habitat use of bears from relatively secure areas in the reservoir to high-risk habitats on the highway and power line rights-of-way. Mitigative recommendations include reducing the attractiveness of those rights-of-way and maintaining spring ranges in tributary valleys by careful development planning. 14 refs., 7 figs., 17 tabs

  17. FISH DIVERSITY ALONG THE LONGITUDINAL GRADIENT IN A MAN–MADE LAKE OF WEST AFRICA, TAABO HYDROELECTRIC RESERVOIR, IVORY COAST

    Directory of Open Access Journals (Sweden)

    N. G. Aliko

    2010-04-01

    Full Text Available Fish assemblage patterns in Taabo Reservoir, a hydroelectric lake of Ivory Coast, were studied and related to the longitudinal gradient (river–dam gradient composed of riverine, transitional, and lacustrine zones. Data were collected at 5 stations and each one was sampled during 5 surveys. Fish community structure was analysed using alpha and beta diversity indices. In total, 53 fish species were obtained in the whole ecosystem. Total species richness recorded at each ecological zone was 42, 43 and 45 species respectively in the riverine, transitional and lacustrine zones. Alpha diversity did not differed significantly along the longitudinal gradient but reached the highest value (33 species in the transitional zone and the lowest (18 species occurred in both the riverine and lacustrine zones. Temporal variability of Alpha diversity according to the hydrological regime of the lake differed with the zone. Beta diversity showed that fish assemblages similarity was higher between the transitional and the riverine zones (βw = 0.43 and lower between the riverine and the lacustrine zones (βw = 0.79.

  18. Revolutionising landscapes: Hydroelectricity and the heavy industrialisation of society and environment in the Comte de Beauharnois, 1927--1948

    Science.gov (United States)

    Pelletier, Louis-Raphael

    This dissertation analyses the rapid industrialisation of the rural Comte de Beauharnois and the adjacent stretch of the Fleuve Saint-Laurent owing to the construction, between 1929 and 1948, of a gigantic canal for hydroelectricity production and navigation by an electricity corporation called the Beauharnois Light Heat and Power (BLH&P). Using principally the archives of the BLH&P---especially its complaints files and its rich photographic record---this thesis argues that this process exemplifies the finance capitalist reorganisation of the society and ecosystems of the Canadian province of Quebec from the 19th century to the Great Depression. In keeping with recent work in environmental history, the transformation of rural landscapes and a river for heavy industry is described as an important dimension of a revolution in modes of production. More specifically, I argue that, in the case under study, the finance-capitalist reorganisation of Quebec revolved around two central and explicit projects, one social and the other environmental: the grouping of most individuals in an industrial working class without control over the means of production and the reorganisation of rural landscapes into reservoirs of modern energy and industrial natural resources.

  19. Possibilities for construction of small hydroelectric power plants in the Republic of Bulgaria

    International Nuclear Information System (INIS)

    The hydroenergy potential of Bulgaria and its utilization until 2000 is discussed. An assessment is made of the possibilities of the use of additional micro-hydroenergy potential (the preliminary evaluation gives about 1.3 bill. kWh/y with total power 250 MW). In the National Strategy for the development, use and preservation of water in Bulgaria till 2020 it is envisioned 60 micro HPP with power of 36 MW power to be constructed. The Program for hydro energy to 2010 envisioned including of private investments if the construction, buying up the electric energy by the National Electric Company and two-stage construction of the cascade 'Sreden Iskyr' with 10 small NPPs. The necessity of the development of a Manual of express investigation and design of small NPP is substantiated

  20. Practical operation strategies for pumped hydroelectric energy storage (PHES) utilising electricity price arbitrage

    International Nuclear Information System (INIS)

    In this paper, three practical operation strategies (24Optimal, 24Prognostic, and 24Hsitrocial) are compared to the optimum profit feasible for a PHES facility with a 360 MW pump, 300 MW turbine, and a 2 GWh storage utilising price arbitrage on 13 electricity spot markets. The results indicate that almost all (∼97%) of the profits can be obtained by a PHES facility when it is optimised using the 24Optimal strategy developed, which optimises the energy storage based on the day-ahead electricity prices. However, to maximise profits with the 24Optimal strategy, the day-ahead electricity prices must be the actual prices which the PHES facility is charged or the PHES operator must have very accurate price predictions. Otherwise, the predicted profit could be significantly reduced and even become a loss. Finally, using the 24Optimal strategy, the PHES profit can surpass the annual investment repayments required. However, over the 5-year period investigated (2005-2009) the annual profit from the PHES facility varied by more than 50% on five out of six electricity markets considered. Considering the 40-year lifetime of PHES, even with low investment costs, a low interest rate, and a suitable electricity market, PHES is a risky investment without a more predictable profit. - Highlights: → Electricity generators typically operate on a market, including energy storage. → This paper assesses how energy storage can maximise its profits on a market. → Four operating strategies are assessed on 13 markets using a case study.→ One operating strategy achieves 97% of the profits feasible.→ However, the profit varies a lot depending on the market and capital costs.