WorldWideScience

Sample records for brazilian electric power

  1. Lost in Translation : Interpreting the Brazilian Electric Power Privatisation Failure

    NARCIS (Netherlands)

    S. Tankha (Sunil)

    2008-01-01

    textabstractDid Latin American privatisation polices fail because of flawed implementation of fundamentally sound policies or because privatisation policies were themselves seriously flawed? Using the Brazilian electric power reforms as a narrative tool, this paper examines the causal chain assumed

  2. Globalization, economy financing model crisis and the institutional re-structuration of the Brazilian electric power system; Globalizacao, crise do padrao de financiamento da economia e reestruturacao institucional do setor eletrico brasileiro

    Energy Technology Data Exchange (ETDEWEB)

    Maciel, Claudio Schuller

    1995-12-31

    This thesis discusses the crisis in the Brazilian economical financing model and the consequent re-structuration of the Brazilian electric power system, giving special emphasis to: global historical factors; the new economic order; and, the consequences of the financial crisis in the Brazilian electric power system. In addition, it suggests new strategies for the institutional reformulation of the Brazilian electric power system 226 refs., 13 tabs.

  3. Improvement of the electric power sector through the access to the national power transmission system - SINTREL (Brazilian National System of Electric Power Transmission); Aperfeicoamento do setor de energia eletrica atraves do acesso a transmissao - SINTREL (Sistema Nacional de Transmissao de Energia Eletrica)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1994-04-01

    This report presents the organization and the operation of SINTREL (Brazilian National System of Electric Power Transmission), the national power transmission system, and it defines its function in the process of reform of the Brazilian electric sector. Besides showing the traditional organization of the companies and of the electric system, and the evolution of the organization of the Brazilian electric system to favor the competition.

  4. Electric Power

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    @@ China Council for the Promotion of International Trade Electric Power Industry Office (CCPIT Electric Power), one of the pro-fessional industrial branches of China Council for the Promotion of International Trade (CCPIT), was established in 2006.

  5. The Green Stamp in Power Supply Contracts - A proposal for the Brazilian Electricity Market

    Energy Technology Data Exchange (ETDEWEB)

    Estrocio, Joao Paulo

    2010-09-15

    The insertion of a certification mechanism for discriminatory energy supply contracts aiming to make it possible to contract exclusively clean and renewable energy is presented. With the increasing interest for sustainability and carbon emissions reduction, there's a growing demand for clean energy reflected in people's choices for cleaner products. Electricity in a power grid, however, is result of a set of sources or plants, and its operation or dispatch. A proposal for clean energy contracts is presented, providing the market and the clients with the ability to choose to buy exclusively renewable energy through the grid.

  6. Using of electric power auctions in the Brazilian energy sector; A utilizacao de leiloes de energia eletrica no setor eletrico brasileiro

    Energy Technology Data Exchange (ETDEWEB)

    Almeida, Luis Henrique Bassi [Agencia Nacional de Energia Eletrica (ANEEL), Brasilia, DF (Brazil)]. E-mail: lhbassi@aneel.gov.br; Camargo, Ivan Marques de Toledo [Universidade de Brasilia (UnB), DF (Brazil)]. E-mail: ivancamargo@unb.br

    2006-07-01

    The Brazilian power industry has undergone fundamental institutional changes in order to introduce competition in generation segment by allowing more flexibility to the electricity trading arrangements since mid 90. These reforms were aimed at increasing economic efficiency and both cost and energy price reduction. The restructuring process requested a highly complex legal framework in order to: ensure the necessary investments for the expansion of power infrastructure; stimulate the participation of private capital; and guarantee power supply adequacy at desired safety and reliability levels. The electricity rationing, occurred in 2001, was a result of: lack of investments, growing demand and supply vulnerability to adverse hydrological shocks. As a consequence, the Brazilian Government initiated a wide debate concerning the loopholes in the implanted model as well as the improvements needed to be adopted. The refinement of the electricity trading arrangements is an important aspect of the electric sector model revitalization. It resulted in the implantation of energy auctions aiming at increasing transactions transparency as well as establishing a long run energy price market reference and promoting market efficiency and competition. This paper analyses the implementation of energy auctions as a mechanism for trading power purchase agreements in the long term. It also discusses the Brazilian power industry restructuring process, in the face of the distribution utilities' obligation to purchase power for their captive customers. (author)

  7. The convergence of the natural gas industry and electric power industry: the Brazilian case; Convergencia entre a industria do gas natural e a industria de energia eletrica: o caso brasileiro

    Energy Technology Data Exchange (ETDEWEB)

    Almeida, Jose Ricardo Uchoa Cavalcanti [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Coordenacao dos Programas de Pos-graduacao de Engenharia (COPPE). Programa de Planejamento Energetico

    2008-07-01

    The main purpose of this paper is to analyze the convergence between power (electric sector) and natural gas industries in Brazil. It also shows how this convergence happens in the USA market and its applicability in the Brazilian market. At the end some conclusions and suggestions are presented to satisfy the Brazilian market, which behaves in a different way as the USA market, i.e. the Brazilian market does not follow seasonal pattern but an aleatory pattern in thermoelectric plants. (author)

  8. The concurrence safeguard on Brazilian electric power sector and the introduction of the competition; A defesa da concorrencia no setor eletrico brasileiro e a introducao da competicao

    Energy Technology Data Exchange (ETDEWEB)

    Nascimento, Jose Guilherme A. do; Ribeiro Filho, Ary Pinto; Ishihara, Claudio Akio [Agencia Nacinal de Enegia Eletrica (ANEEL), Brasilia, DF (Brazil)

    1999-07-01

    The central issue of debate is the need to align the energy sector's options and organization with changing global patterns of economic and social development, characterized by the increasing role played by the private sector, greater integration in the world economy, and new economic and social priorities such as efficiency, decentralization, deregulation, and a closer attention to environmental issues. In this context, the aim of the work is to introduce the incentive to the competition as government policy instrument for Brazilian electric power sector.

  9. Brazilian hybrid electric fuel cell bus

    Energy Technology Data Exchange (ETDEWEB)

    Miranda, P.E.V.; Carreira, E.S. [Coppe-Federal Univ. of Rio de Janeiro (Brazil). Hydrogen Lab.

    2010-07-01

    The first prototype of a hybrid electric fuel cell bus developed with Brazilian technology is unveiled. It is a 12 m urban-type, low-floor, air-conditioned bus that possesses three doors, air suspension, 29 seats and reversible wheelchair site. The bus body was built based on a double-deck type monoblock vehicle that is able to sustain important load on its roof. This allowed positioning of the type 3 hydrogen tanks and the low weight traction batteries on the roof of the vehicles without dynamic stabilization problems. A novel hybrid energy configuration was designed in such a way that the low-power (77 kWe) fuel cell works on steady-state operation mode, not responding directly to the traction motor load demand. The rate of kinetic energy regeneration upon breaking was optimized by the use of an electric hybrid system with predominance of batteries and also by utilizing supercapacitors. The electric-electronic devices and the security control softwares for the auxiliary and traction systems were developed in-house. The innovative hybrid-electric traction system configuration led to the possibility to decrease the fuel cell power, with positive impact on weight and system volume reduction, as well as to significantly decrease the hydrogen consumption. (orig.)

  10. Complex Network Analysis of Brazilian Power Grid

    CERN Document Server

    Martins, Gabriela C; Ribeiro, Fabiano L; Forgerini, Fabricio L

    2016-01-01

    Power Grids and other delivery networks has been attracted some attention by the network literature last decades. Despite the Power Grids dynamics has been controlled by computer systems and human operators, the static features of this type of network can be studied and analyzed. The topology of the Brazilian Power Grid (BPG) was studied in this work. We obtained the spatial structure of the BPG from the ONS (electric systems national operator), consisting of high-voltage transmission lines, generating stations and substations. The local low-voltage substations and local power delivery as well the dynamic features of the network were neglected. We analyze the complex network of the BPG and identify the main topological information, such as the mean degree, the degree distribution, the network size and the clustering coefficient to caracterize the complex network. We also detected the critical locations on the network and, therefore, the more susceptible points to lead to a cascading failure and even to a blac...

  11. The new tariff model based on marginal costs developing concept for Brazilian electric sector. A case study for Power and Light Company of Sao Paulo State (Brazil); O novo modelo tarifario baseado no conceito de custos marginais em desenvolvimento para o setor eletrico brasileiro. Um estudo de caso para a Companhia Paulista de Forca e Luz

    Energy Technology Data Exchange (ETDEWEB)

    Correia, S.P.S.

    1991-12-31

    A new methodology for power generation cost accounts in Brazilian electric sector is described, with the application of marginal costs theory and its deviation in developing economies. A case report from a Brazilian Power and Light Company is studied, focalizing the seasoning, the planning, the tariff model and the power generation, transmission and distribution. (M.V.M.). 19 refs, 28 figs, 1 tab.

  12. Problems and challenges in Brazilian electric power sector: energy or energetic model crisis?; Problemas e desafios do setor eletrico brasileiro: crise da energia ou crise do modelo?

    Energy Technology Data Exchange (ETDEWEB)

    Sauer, Ildo Luis; Vieira, Jose Paulo [Sao Paulo Univ., SP (Brazil). Inst. de Eletrotecnica e Energia. Programa Interunidades de Pos-graduacao em Energia

    2002-07-01

    For the Brazilian electric sector built up from the sixties, the plan was always the viability of the private accumulation, materializing in a implicit privatization based on the purchase decision and sectorial investments. From the nineties on this logic became more deep, aiming the total handing over to the private interests, the control of the concessionaires through the share control sales and the creation of regulatory and legal frame work to guarantee this objective. This paper discusses the challenge and problems of the Brazilian electric sector.

  13. Hydro, thermal and photovoltaic power plants: A comparison between electric power generation, environmental impacts and CO2 emissions in the Brazilian scenario

    Directory of Open Access Journals (Sweden)

    Juliana D’ Angela Mariano, Francielle Rocha Santos, Gabriel Wolanski Brito, Jair Urbanetz Junior, Eloy Fassi Casagrande Junior

    2016-01-01

    Full Text Available The challenge of sustainability is present in electricity generation. The sources should be renewable, and production should respect the environment and all forms of life. Being the main energy sources in Brazil, hydroelectric and thermal power plants have drawbacks when considering environmental impacts. In contrast, the use of photovoltaic energy is a sustainable alternative, pollution-free in its operating phase and with significantly less impact in its construction phase. The purpose of this article is to make a relation between the electricity generated by the hydroelectric Itaipu plant, the thermoelectric complex Jorge Lacerda, the Eletronuclear plant, and the analysis of a photovoltaic plant proposal for these three scenarios. The relation between the production of electricity in Itaipu, Jorge Lacerda, and Eletronuclear power plants, and the projected energy production of a photovoltaic plant for each scenario was obtained through calculations according to the area of each plant, generating a comparison between the installed power of the referred plants, and the estimated installed capacity for the projected photovoltaic plant. The environmental impacts were assessed for the different scenarios, and CO2 emissions were quantified. The calculated results show that the installed power of the projected photovoltaic plant was significantly higher than the installed power of the existing plants. The photovoltaic plant’s capacity factor, for the proposed study, was of 15%, and the projected annual photovoltaic energy for the respective areas presented significantly higher values, of approximately 330,180.40 TWh in comparison to Itaipu plant, while in comparison to Jorge Lacerda plant, for instance, it was of approximately 428,229.23 TWh, whereas to Eletronuclear it was 0.0288 TWh. The results of this study show that photovoltaic plants with equivalent areas of Itaipu and Jorge Lacerda power plants, could generate higher annual energy

  14. Electrical Power Converter

    NARCIS (Netherlands)

    Ferreira, J.A.

    2014-01-01

    Electrical power converter for converting electrical power of a power source connected or connectable at an input to electrical DC-power at an output, wherein between the input and the output a first circuit of submodules is provided, wherein said first circuit of submodules and the power source for

  15. Generation potential of electric power surplus with the biogas produced from anaerobic bio digestion of vinasse in Brazilian sugar-ethanol industry; Potencial de geracao de excedentes de energia eletrica com o biogas produzido a partir da biodigestao da vinhaca na industria sucro-alcooleira brasileira

    Energy Technology Data Exchange (ETDEWEB)

    Lamonica, Helcio Martins [Universidade Estadual de Campinas (DE/FEM/UNICAMP), SP (Brazil). Fac. de Engenharia Mecanica. Dept. de Energia

    2006-07-01

    This work evaluates the electric power potential of the Brazilian sugarcane industry using the biogas produced by vinasse biodigestion in internal combustion engine driven generators. The electric power surplus based on crop 2004/05 ethanol production data is 9,292 TJ/year (2.6 TWh/year), 0.75% of the total electric power consumption in Brazil during the year of 2003. In spite of its considerable potential the determined minimum selling price for its produced energy of R$ 89.98/GJ (R$ 323.92/MWh) is expensive for present Brazilian electric power market price. (author)

  16. TRADING FORWARD IN THE BRAZILIAN ELECTRICITY MARKET

    Directory of Open Access Journals (Sweden)

    Paulo Cesar Coutinho

    2013-01-01

    Full Text Available We study the interaction between forward and spot electricity markets in a scenario where buyers and sellers are price takers in the forward market and trade through marketers, who play a Cournot game. Our model’s main features come from the Brazilian electricity market, where a free contract market coexists with a regulated contract market, and the spot price is the output of a stochastic dynamic algorithm. We are able to show that the price of energy bought (sold forward decreases (increases with the number of marketers, and that, as a result, full hedging is achieved in the limit. We also investigate the effects on prices of changes in the number of market participants and in aggregate consumption and supply, an exercise that yields important policy recommendations for the Brazilian regulator.

  17. A proposal for evaluation of the owner capital cost for the Brazilian electric power sector; Uma proposta de avaliacao do custo do capital proprio para o setor de energia eletrica brasileiro

    Energy Technology Data Exchange (ETDEWEB)

    Serrano, Ricardo Oliveira L.

    2003-12-01

    This work studies the owner capital cost of the brazilian electric sector, according to three methods: Comparable Accounting Earnings, that uses historical values in its measuring and Discounted Cash Flow (DCF) and the Capital Asset Pricing Model (CAPM), elaborated from the expected values. The obtained results by using the CAE method showed that the Brazilian electric sector has not been rewarded in its real necessity of maintenance and expansion. From this observation, it was considered appropriated not to take this method in the methodology presently proposed, which will be using only the single average of the CAPM and DCF models. The use of the results single average of this model presents the advantage of selecting specific characteristics of each one, and diluting the effects of occasional peak values. The owner capital cost obtained from this work was the average value of 19.73% for the studied period - 1995/2003 (17.12% for 2003), proximate to the obtained result by ANEEL - brazilian agency of electric power - for investments in energy distribution in Brazil, 17.47%, while Minardi and Sanvicente (2003) obtained 36.06% for the owner capital cost of CEMIG in 2002, specifically.

  18. Aircraft Electric Secondary Power

    Science.gov (United States)

    1983-01-01

    Technologies resulted to aircraft power systems and aircraft in which all secondary power is supplied electrically are discussed. A high-voltage dc power generating system for fighter aircraft, permanent magnet motors and generators for aircraft, lightweight transformers, and the installation of electric generators on turbine engines are among the topics discussed.

  19. Shipboard electrical power systems

    CERN Document Server

    Patel, Mukund R

    2011-01-01

    Shipboard Electrical Power Systems addresses new developments in this growing field. Focused on the trend toward electrification to power commercial shipping, naval, and passenger vessels, this book helps new or experienced engineers master cutting-edge methods for power system design, control, protection, and economic use of power. Provides Basic Transferable Skills for Managing Electrical Power on Ships or on LandThis groundbreaking book is the first volume of its kind to illustrate optimization of all aspects of shipboard electrical power systems. Applying author Mukund Patel's rare combina

  20. The Brazilian experience of incentive of renewable sources expansion by means of electric power auctions; A experiencia brasileira de incentivo a expansao das fontes renovaveis por meio de leiloes de energia eletrica

    Energy Technology Data Exchange (ETDEWEB)

    Viana, Alexandre Guedes [Camara de Comercializacao de Energia Eletrica (CCEE), Sao Paulo, SP (Brazil); Parente, Virginia [Universidade de Sao Paulo (USP), SP (Brazil)

    2010-07-01

    The aim of this paper is to present the Brazilian experience to encourage renewable sources of power generation through the auctions into the Regulated Environment of Contracting. These auctions are subdivided into auctions of existing plants, new plants, alternative sources and structural plants. In this process we observe the structure of the mechanism for contracting new projects of renewable sources without neglecting the low tariffs issues. Thus, the auctions of electricity in Brazil is an alternative to be considered in an attempt to group market mechanisms, low tariffs and incentives to renewable sources of generation. (author)

  1. The Brazilian electric power industry restructuring: an evaluation of the competition through the contestable market theory; A reestruturacao da industria de energia eletrica brasileira: uma avaliacao da competicao atraves da teoria de mercados contestaveis

    Energy Technology Data Exchange (ETDEWEB)

    Vinhaes, Elbia [Santa Catarina Univ., Florianopolis, SC (Brazil). Nucleo de Estudos em Economia Industrial e de Tecnologia]. E-mail: vinhaes@cse.ufsc.br; Santana, Edvaldo de [Santa Catarina Univ., Florianopolis, SC (Brazil). Dept. de Economia

    1999-07-01

    The central issue of debate was the need to align the energy sector's options and organization with changing global patterns of economic and social development, characterized by the increasing role played by the private sector, greater integration in the world economy, and new economic and social priorities such as efficiency, decentralization, deregulation, and a closer attention to environmental issues. The aim of the work is to evaluate the competition in the Brazilian electric power industry through the Contestable Market Theory proposed by Baumol.

  2. Electric power annual 1992

    Energy Technology Data Exchange (ETDEWEB)

    1994-01-06

    The Electric Power Annual presents a summary of electric utility statistics at national, regional and State levels. The objective of the publication is to provide industry decisionmakers, government policymakers, analysts and the general public with historical data that may be used in understanding US electricity markets. The Electric Power Annual is prepared by the Survey Management Division; Office of Coal, Nuclear, Electric and Alternate Fuels; Energy Information Administration (EIA); US Department of Energy. ``The US Electric Power Industry at a Glance`` section presents a profile of the electric power industry ownership and performance, and a review of key statistics for the year. Subsequent sections present data on generating capability, including proposed capability additions; net generation; fossil-fuel statistics; retail sales; revenue; financial statistics; environmental statistics; electric power transactions; demand-side management; and nonutility power producers. In addition, the appendices provide supplemental data on major disturbances and unusual occurrences in US electricity power systems. Each section contains related text and tables and refers the reader to the appropriate publication that contains more detailed data on the subject matter. Monetary values in this publication are expressed in nominal terms.

  3. Electric power annual 1993

    Energy Technology Data Exchange (ETDEWEB)

    1994-12-08

    This report presents a summary of electric power industry statistics at national, regional, and state levels: generating capability and additions, net generation, fossil-fuel statistics, retail sales and revenue, finanical statistics, environmental statistics, power transactions, demand side management, nonutility power producers. Purpose is to provide industry decisionmakers, government policymakers, analysts, and the public with historical data that may be used in understanding US electricity markets.

  4. The evolution of legal aspects on the Brazilian electric power sector, a critical analysis; Evolucao dos marcos regulatorios do mercado de energia eletrica no Brasil, uma analise critica

    Energy Technology Data Exchange (ETDEWEB)

    Bastos, Adriano Silva

    2007-07-01

    The electric sector went through deep changes along these 125 years of electrification of the country, mainly the alternation of their investment bases, hour being private for the most part, state hour. The legal bases of concession and regulation also varied in this period, trying to adapt to the effective model of the time. This work intends to analyze the evolution of the regulatory models of the electric sector, identifying the main changes of paradigms and to compare the efficiency of the models already implanted in the segment, with views to the increment of the offer of energy in the period, molding a critical profile of the best model already adopted in the national electric sector. To compare qualitatively these models requests an analysis of the investment bases a priori in the sector, identifying the contribution of resources has been private or state, following by the government's legal positioning in the sense of being only regulator, or regulator and investor, concluding with an analysis of the electric power offer in the period and the power of self-financing of the companies, in order to assent that the mixed model is the most appropriate model for the sustainable growth of the electric power generation sector in Brazil. (author)

  5. Electric power substations engineering

    CERN Document Server

    McDonald, John D

    2012-01-01

    The use of electric power substations in generation, transmission, and distribution remains one of the most challenging and exciting areas of electric power engineering. Recent technological developments have had a tremendous impact on all aspects of substation design and operation. With 80% of its chapters completely revised and two brand-new chapters on energy storage and Smart Grids, Electric Power Substations Engineering, Third Edition provides an extensive updated overview of substations, serving as a reference and guide for both industry and academia. Contributors have written each chapt

  6. Electric power distribution handbook

    CERN Document Server

    Short, Thomas Allen

    2003-01-01

    Of the ...big three... components of the electricity infrastructure, distribution typically gets the least attention, and no thorough, up-to-date treatment of the subject has been published in years. Filling that void, the Electric Power Distribution Handbook provides comprehensive information on the electrical aspects of power distribution systems. It is an unparalleled source for the background information, hard-to-find tables, graphs, methods, and statistics that power engineers need, and includes tips and solutions for problem solving and improving performance. In short, this handbook giv

  7. Electric power quality

    CERN Document Server

    Chattopadhyay, Surajit; Sengupta, Samarjit

    2011-01-01

    In the present day deregulated power market electric power quality issues have become great concerns of utilities, end users and manufacturers. Worldwide researches are going on to address those issues. Electric Power Quality has evolved from the researches carried out by the authors. The key features of the book can be highlighted as follows: the contents focuses, on one hand, different power quality issues, their sources and effects and different related standards, which are required for students, researchers and practising engineers and, on the other hand, measurement techniques for differe

  8. Electric power systems

    CERN Document Server

    Weedy, B M; Jenkins, N; Ekanayake, J B; Strbac, G

    2012-01-01

    The definitive textbook for Power Systems students, providing a grounding in essential power system theory while also focusing on practical power engineering applications. Electric Power Systems has been an essential book in power systems engineering for over thirty years. Bringing the content firmly up-to-date whilst still retaining the flavour of Weedy's extremely popular original, this Fifth Edition has been revised by experts Nick Jenkins, Janaka Ekanayake and Goran Strbac. This wide-ranging text still covers all of the fundamental power systems subjects but is now e

  9. Electric power distribution handbook

    CERN Document Server

    Short, Thomas Allen

    2014-01-01

    Of the ""big three"" components of electrical infrastructure, distribution typically gets the least attention. In fact, a thorough, up-to-date treatment of the subject hasn't been published in years, yet deregulation and technical changes have increased the need for better information. Filling this void, the Electric Power Distribution Handbook delivers comprehensive, cutting-edge coverage of the electrical aspects of power distribution systems. The first few chapters of this pragmatic guidebook focus on equipment-oriented information and applications such as choosing transformer connections,

  10. Research in electric power

    CERN Document Server

    Sporn, Philip

    2013-01-01

    Research in Electric Power comprises the lectures presented in the Cornell University Lecture in 1965, which focuses on the research and development of electric energy or technology. The lectures compiled in this book are divided into three chapters. Chapter I traces the dramatic and exciting history of growth of the electric power industry and important contribution of a series of great technological developments. The second chapter examines in great detail the problems demanding research in the main areas of planning, design, and construction of the physical facilities; in successfully and e

  11. Electric power monthly

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-08-01

    The Energy Information Administration (EIA) prepares the Electric Power Monthly (EPM) for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. This publication provides monthly statistics for net generation, fossil fuel consumption and stocks, quantity and quality of fossil fuels, cost of fossil fuels, electricity sales, revenue, and average revenue per kilowatthour of electricity sold. Data on net generation, fuel consumption, fuel stocks, quantity and cost of fossil fuels are also displayed for the North American Electric Reliability Council (NERC) regions. The EIA publishes statistics in the EPM on net generation by energy source, consumption, stocks, quantity, quality, and cost of fossil fuels; and capability of new generating units by company and plant. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead.

  12. Performance indicators proposal for the government electric power distribution facilities in the Brazilian electric sector; Proposta de indicadores de desempenho as distribuidoras de energia federalizadas do setor eletrico brasileiro

    Energy Technology Data Exchange (ETDEWEB)

    Carregaro, Jose Carlos

    2003-07-01

    In this dissertation a set of indicators is proposed to the Centrais Eletricas Brasileiras S/A - ELETROBRAS, allowing the holding companies to attain the top position in the market, and a global vision of their performance. The methodology applied the definition of the performance indicators and the context, existing studies, and the indicators used by the Brazilian electric sector. It is expected that the proposed set of indicators be used by ELETROBRAS for a better planning and a more objective control of the holding companies performance, as well as an analysis of their administration strong and weak aspects.

  13. Electrical power cable engineering

    CERN Document Server

    Thue, William A

    2011-01-01

    Fully updated, Electrical Power Cable Engineering, Third Edition again concentrates on the remarkably complex design, application, and preparation methods required to terminate and splice cables. This latest addition to the CRC Press Power Engineering series covers cutting-edge methods for design, manufacture, installation, operation, and maintenance of reliable power cable systems. It is based largely on feedback from experienced university lecturers who have taught courses on these very concepts.The book emphasizes methods to optimize vital design and installation of power cables used in the

  14. Electric power monthly

    Energy Technology Data Exchange (ETDEWEB)

    Smith, Sandra R.; Johnson, Melvin; McClevey, Kenneth; Calopedis, Stephen; Bolden, Deborah

    1992-05-01

    The Electric Power Monthly is prepared by the Survey Management Division; Office of Coal, Nuclear, Electric and Alternate Fuels, Energy Information Administration (EIA), Department of Energy. This publication provides monthly statistics at the national, Census division, and State levels for net generation, fuel consumption, fuel stocks, quantity and quality of fuel, cost of fuel, electricity sales, revenue, and average revenue per kilowatthour of electricity sold. Data on net generation, fuel consumption, fuel stocks, quantity and cost of fuel are also displayed for the North American Electric Reliability Council (NERC) regions. Additionally, statistics by company and plant are published in the EPM on capability of new plants, new generation, fuel consumption, fuel stocks, quantity and quality of fuel, and cost of fuel.

  15. Lightweight Electric Power Cable.

    Science.gov (United States)

    1982-09-01

    8I~ .4 111 162 MICROCi Pi RL’ LUHION TESI CHARI "LIGHTWEIGHT ELECTRIC POWER CABLE" FINAL TECHNICAL REPORT SEPTEMBER 30, 1981 to SEPTEMBER 30, 1982... Vulcanized by heat to crosslink. TPE (Thermoplastic Elastomer) - Polymers having elastomeric proper- ties. Used as thermoplastics - melt formed by

  16. Energy commercialization in the new environment of the Brazilian electric power sector. A methodology for production allocation strategies analysis; Comercializacao de energia no novo ambiente do setor eletrico brasileiro. Uma metodologia para analise de estrategias de alocacao da producao

    Energy Technology Data Exchange (ETDEWEB)

    Ramos, Dorel Soares [Companhia Energetica de Sao Paulo (CESP), SP (Brazil)]. E-mail: dorelam@cesp.com.br; Lima, Wagner da Silva [Sao Paulo Univ., SP (Brazil). Escola Politecnica]. E-mail: wagner@pea.usp.br; Castro, Roberto [ELEKTRO - Eletricidade e Servicos S.A., Sao Paulo, SP (Brazil)]. E-mail: castro@mt2net.com.br

    1999-07-01

    The restructuring of the Brazilian Electric Sector has modified the rules for purchase and sale of energy, resulting in the creation of the Wholesale Energy Market. In this new context, the decision of the exposure level to the spot market price and the purchase of energy through bilateral contracts becomes so much a strategic variable for consumers or dealers, as for hydro and thermal generators. This work presents a methodology for planning of energy commercialization envisaging purchase and sale energy opportunities provided by the new Regulatory Framework of the Brazilian Electric Sector. (author)

  17. Electric power emergency handbook

    Energy Technology Data Exchange (ETDEWEB)

    Labadie, J.R.

    1980-09-01

    The Emergency Electric Power Administration's Emergency Operations Handbook is designed to provide guidance to the EEPA organization. It defines responsibilities and describes actions performed by the government and electric utilities in planning for, and in operations during, national emergencies. The EEPA Handbook is reissued periodically to describe organizational changes, to assign new duties and responsibilities, and to clarify the responsibilities of the government to direct and coordinate the operations of the electric utility industry under emergencies declared by the President. This Handbook is consistent with the assumptions, policies, and procedures contained in the National Plan for Emergency Preparedness. Claimancy and restoration, communications and warning, and effects of nuclear weapons are subjects covered in the appendices.

  18. Wind power. [electricity generation

    Science.gov (United States)

    Savino, J. M.

    1975-01-01

    A historical background on windmill use, the nature of wind, wind conversion system technology and requirements, the economics of wind power and comparisons with alternative systems, data needs, technology development needs, and an implementation plan for wind energy are presented. Considerable progress took place during the 1950's. Most of the modern windmills feature a wind turbine electricity generator located directly at the top of their rotor towers.

  19. Electric power industry in China

    Energy Technology Data Exchange (ETDEWEB)

    Zisheng Jiang [Ministry of Electric Power, Beijing (China). Bureau of Electric Power Machinery

    1995-07-01

    This document presents the status of the electric power in China, highlighting the following aspects: recent achievement, electricity increased sharing in the total energy consumption, technical economic indexes, nuclear power, renewable energy sources, rural electrification, transmission and power network, transmission lines and substations, present status and development trends for power network, regulation of power system dispatching, power system communication. The document also presents the future developing plan, approaching the outlook and strategy, development targets of the electric power industry and the administrative system reforming of the electric power industry.

  20. Technical performance indicators of electric power generation service; Indicadores de desempenho tecnico dos servicos de geracao

    Energy Technology Data Exchange (ETDEWEB)

    Amaral, Cristiano Abijao de; Carvalho, Fabiano da Rosa; Nascimento, Jose Guilherme A. do; Feijao, Romulo de Vasconcelos [Agencia Nacional de Energia Eletrica (ANEEL), Brasilia, DF (Brazil)

    1999-07-01

    The aim of this work is to present the preliminary indicators of the technical performance from the Brazilian electric power generation services. The indicators represent essentially the reliability, the availability and the assistance to dispatch and they are calculated in three aggregation levels: power generation unit, electric power plant and electric utilities. In this context is considered the difference among several technologies used to generate electric power, the several kinds of electric power systems, and the several categories of agents' generators.

  1. Electric power substations engineering

    CERN Document Server

    2003-01-01

    This book covers all aspects of substations, from the initial concept to design, automation, operation, and physical and cyber security. Written by members of the Institute of Electrical and Electronic Engineers (IEEE) Power Engineering Society (PES) Substations Committee, each section provides a tutorial and includes references for further reading and study. The authors use photographs and graphics to help the reader understand the material. Exploring the most recent technological developments regarding industry practice and standards, the book provides an extensive overview of substations th

  2. Photovoltaic systems connected to electric power like distributed generators: the recent situation at the PVPS-IEA and at the Brazilian scenario; Sistemas fotovoltaicos conectados a rede eletrica como geradores distribuidos: a situacao recente no PVPS-IEA e no cenario brasileiro

    Energy Technology Data Exchange (ETDEWEB)

    Quaglia, Renato Brito; Oliveira, Sergio Henrique Ferreira de [Universidade Federal do ABC (UFABC), Santo Andre, SP (Brazil). Centro de Engenharia, Modelagem e Ciencias Sociais Aplicadas. Programa de Pos-Graduacao em Energia], email: renato.quaglia@ufabc.edu.br

    2008-07-01

    In this paper it is considered the use of Distributed Generation (GD) as a further option to centralized generation of electricity and treats its photovoltaic systems connected to power network (SFCR's) technology as an option in this interesting 'new' model to plan the expansion of the brazilian electrical energy matrix, mainly in urban centres. For this reason, it was necessary to mention the main characteristics of this technology as distributed generators, and the profile of his generation when connected in homes and commercial buildings. Moreover, it presents the benefits that these systems can offer the electricity sector, society and the economy. In the study of Photovoltaic Power Systems Programme (PVPS), specifically the situation of this technology in Germany, realized that the creation of mechanisms of financial incentives provided to implement some of the main barriers associated with the integration of photovoltaic systems as distributed generators. In assessing the Brazilian context, there was the incipient photovoltaic market in the country, even taking some systems already installed, note that the vast majority are intended for studies of Research and Development. There is also the exploitation of photovoltaic systems connected to the network for use in homes, businesses or industries, probably because of the lack of incentive programs for SFCR's. Although there is a programme of incentives to Alternative Sources of Electricity - Proinfa, it does not consider the SFCR's in its guidelines for qualification, only the wind systems, small hydroelectric plants and systems powered by biomass. Point is, therefore, the need for the creation of an energy policy that encourages the Brazilian market photovoltaic, more precisely a policy of offering incentives conditions of maturity of this technology when connected to the network - technical standards, decrease costs, creation of hand of specialized work, installation of manufacturers

  3. Transdisciplinary electric power grid science

    CERN Document Server

    Brummitt, Charles D; Dobson, Ian; Moore, Cristopher; D'Souza, Raissa M

    2013-01-01

    The 20th-century engineering feat that most improved the quality of human life, the electric power system, now faces discipline-spanning challenges that threaten that distinction. So multilayered and complex that they resemble ecosystems, power grids face risks from their interdependent cyber, physical, social and economic layers. Only with a holistic understanding of the dynamics of electricity infrastructure and human operators, automatic controls, electricity markets, weather, climate and policy can we fortify worldwide access to electricity.

  4. Transdisciplinary electric power grid science

    OpenAIRE

    Brummitt, Charles D.; Hines, Paul D. H.; Dobson, Ian; Moore, Cristopher; D'Souza, Raissa M.

    2013-01-01

    The 20th-century engineering feat that most improved the quality of human life, the electric power system, now faces discipline-spanning challenges that threaten that distinction. So multilayered and complex that they resemble ecosystems, power grids face risks from their interdependent cyber, physical, social and economic layers. Only with a holistic understanding of the dynamics of electricity infrastructure and human operators, automatic controls, electricity markets, weather, climate and ...

  5. The electric power engineering handbook electric power transformer engineering

    CERN Document Server

    Harlow, James H

    2012-01-01

    Electric Power Transformer Engineering, Third Edition expounds the latest information and developments to engineers who are familiar with basic principles and applications, perhaps including a hands-on working knowledge of power transformers. Targeting all from the merely curious to seasoned professionals and acknowledged experts, its content is structured to enable readers to easily access essential material in order to appreciate the many facets of an electric power transformer.Topically structured in three parts, the book: * Illustrates for electrical engineers the relevant theories and pri

  6. The Ten-Year 2007-2016 Plan of Power Expansion in the context of the recovering of Brazilian electric sector planning: advances and possible enhancements; O Plano Decenal de Expansao de Energia 2007/2016 no contexto da retomada do planejamento do setor eletrico brasileiro: avancos e possiveis aprimoramentos

    Energy Technology Data Exchange (ETDEWEB)

    Buratini, Ricardo [Universidade Estadual de Campinas (IE/UNICAMP), SP (Brazil). Inst. de Economia

    2008-07-01

    The purpose of this paper is to analyze the methodology for power consumption projection presented in the Ten-year (2007-2016) Plan of Power Expansion (PDEE 2007/2016) and to propose some questions for discussion. Indeed, bearing in mind the progress achieved in the recent past with respect to the resumption of long term planning in the Brazilian electric power sector, it is pertinent to promote a discussion about the possible limitations of the expansion methodology proposed in PDEE. In short, it is believed that, starting from such a discussion, it could be possible to contribute towards the aim of making the planning process of the Brazilian electric power sector expansion more transparent, more consistent and more participative, consequently bringing a greater convergence of the expectations of the agents of the sector. The main questions raised in this paper about the PDEE's methodology are with respect to the absence of sufficient detail about the interactive adjustment of the several models used to project the consumption, as well as to the lack of information about the models themselves. The general conclusion of this paper is that, in order that the PDEE meets its objective of providing correct signals to all the agents, it is necessary to include more incisively the sector's specialists and the private agents in the methodological discussions, so that no important doubts will remain about the various projections. In our understanding, the success of such an enterprise will depend not only on the disposition of the agents, but on the greater detail and depth that should be previously given to the questions raised in this paper. It is certainly a significant challenge, of a high complexity but of an even higher importance to the electric power sector and to the Brazilian economy. (author)

  7. Electric power monthly, April 1993

    Energy Technology Data Exchange (ETDEWEB)

    1993-05-07

    The Electric Power Monthly is prepared by the Survey Management Division; Office of Coal, Nuclear, Electric and Alternate Fuels, Energy Information Administration (EIA), Department of Energy. This publication provides monthly statistics at the US, Census division, and State levels for net generation, fossil fuel consumption and stocks, quantity and quality of fossil fuels, cost of fossil fuels, electricity sales, revenue, and average revenue per kilowatthour of electricity sold. Data on net generation, fuel consumption, fuel stocks, quantity and cost of fossil fuels are also displayed for the North American Electric Reliability Council (NERC) regions.

  8. Electric power monthly, May 1993

    Energy Technology Data Exchange (ETDEWEB)

    1993-05-25

    The Electric Power Monthly (EPM) is prepared by the Survey Management Division; Office of Coal, Nuclear, Electric and Alternate Fuels, Energy Information Administration (EIA), Department of Energy. This publication provides monthly statistics at the US, Census division, and State levels for net generation, fossil fuel consumption and stocks, quantity and quality of fossil fuels, cost of fossil fuels, electricity sales, revenue, and average revenue per kilowatthour of electricity sold. Data on net generation, fuel consumption, fuel stocks, quantity and cost of fossil fuels are also displayed for the North American Electric Reliability Council (NERC) regions.

  9. The electric power engineering handbook power systems

    CERN Document Server

    2012-01-01

    Power Systems, Third Edition (part of the five-volume set, The Electric Power Engineering Handbook) covers all aspects of power system protection, dynamics, stability, operation, and control. Under the editorial guidance of L.L. Grigsby, a respected and accomplished authority in power engineering, and section editors Andrew Hanson, Pritindra Chowdhuri, Gerry Sheble, and Mark Nelms, this carefully crafted reference includes substantial new and revised contributions from worldwide leaders in the field. This content provides convenient access to overviews and detailed information on a diverse arr

  10. Electric power monthly, August 1993

    Energy Technology Data Exchange (ETDEWEB)

    1993-08-13

    The Electric Power Monthly (EPM) presents monthly electricity statistics. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. The EPM is prepared by the Survey Management Division; Office of Coal, Nuclear, Electric and Alternate Fuels, Energy Information Administration (EIA), Department of Energy. This publication provides monthly statistics at the US, Census division, and State levels for net generation, fossil fuel consumption and stocks, quantity and quality of fossil fuels, cost of fossil fuels, electricity sales, revenue, and average revenue per kilowatthour of electricity sold. Data on net generation, fuel consumption, fuel stocks, quantity and cost of fossil fuels are also displayed for the North American Electric Reliability Council (NERC) regions.

  11. Electric power monthly, September 1993

    Energy Technology Data Exchange (ETDEWEB)

    1993-09-17

    The Electric Power Monthly (EPM) presents monthly electricity statistics. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. The EPM is prepared by the Survey Management Division; Office of Coal, Nuclear, Electric and Alternate Fuels, Energy Information Administration (EIA), Department of Energy. This publication provides monthly statistics at the US, Census division, and State levels for net generation, fossil fuel consumption and stocks, quantity and quality of fossil fuels, cost of fossil fuels, electricity sales, revenue, and average revenue per kilowatthour of electricity sold. Data on net generation, fuel consumption, fuel stocks, quantity and cost of fossil fuels are also displayed for the North American Electric Reliability Council (NERC) regions.

  12. Electric power monthly, June 1994

    Energy Technology Data Exchange (ETDEWEB)

    1994-06-01

    The Electric Power Monthly (EPM) presents monthly electricity statistics. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. Data in this report are presented for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The EIA collected the information in this report to fulfill its data collection and dissemination responsibilities as specified in the Federal Energy Administration Act of 1974 (Public Law 93-275) as amended.

  13. Electric power monthly, August 1994

    Energy Technology Data Exchange (ETDEWEB)

    1994-08-24

    The Electric Power Monthly (EPM) presents monthly electricity statistics. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. Data in this report are presented for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The EIA collected the information in this report to fulfill its data collection and dissemination responsibilities as specified in the Federal Energy Administration Act of 1974 (Public Law 93-275) as amended.

  14. Electric power monthly, July 1993

    Energy Technology Data Exchange (ETDEWEB)

    1993-07-29

    The Electric Power Monthly (EPM) presents monthly electricity statistics. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. Data in this report are presented for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The EIA collected the information in this report to fulfill its data collection and dissemination responsibilities as specified in the Federal Energy Administration Act of 1974 (Public Law 93-275) as amended.

  15. Electric power monthly, May 1994

    Energy Technology Data Exchange (ETDEWEB)

    1994-05-01

    The Electric Power Monthly (EPM) presents monthly electricity statistics. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. Data in this report are presented for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. This publication provides monthly statistics for net generation, fossil fuel consumption and stocks, quantity and quality of fossil fuels, cost of fossil fuels, electricity sales, revenue, and average revenue per kilowatthour of electricity sold. Statistics by company and plant are published on the capability of new generating units, net generation, fuel consumption, fuel stocks, quantity and quality of fuel, and cost of fossil fuels.

  16. Electric power monthly, April 1994

    Energy Technology Data Exchange (ETDEWEB)

    1994-04-01

    The Electric Power Monthly (EPM) presents monthly electricity statistics. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. This publication provides monthly statistics at the U.S., Census division, and State levels for net generation, fossil fuel consumption and stocks, quantity and quality of fossil fuels, cost of fossil fuels, electricity sales, revenue, and average revenue per kilowatthour of electricity sold. Data on net generation, fuel consumption, fuel stocks, quantity and cost of fossil fuels are also displayed for the North American Electric Reliability Council (NERC) regions. This April 1994 issue contains 1993 year-end data and data through January 1994.

  17. Insertion of the free consumers in the Brazilian electrical sector: challenges and opportunities; Insercao dos consumidores livres no setor eletrico brasileiro: desafios e oportunidades

    Energy Technology Data Exchange (ETDEWEB)

    Chaves, Cristiane Padilha

    2010-03-15

    This thesis analyses the role of free consumers in the Brazilian Electric Power Sector. Therefore, it evaluates the role of free consumers in other markets worldwide and analyses the current Brazilian regulatory framework that was introduced in 2004. The current model has replaced the one adopted in the 1990s, when the first reform of the Brazilian Electricity Sector occurred. To assess the role of free consumers in the electricity sector, this work analyses the benefits that this kind of consumers perceive and the risks they are exposed to when they switch from the captive market and go towards the open market. It also evaluates the influence of free consumers over the other industry agents: generators, distributors, retail consumers and society. It also identifies new options for free consumers in the Brazilian electric energy (author)

  18. Highlights of Electric Power Industry in China

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    @@Reform and Development of Electric Power Management Before 1978, China's electric power industry,managed by the Central Government, was a vertically monopoly sector. Along with China's reformation of economy structure started in 1978, electric power industry has step on its road of restructuring and deregulation. Up to now administration of China's electric power industry underwent following reciprocative changes:

  19. Electric Power annual 1996: Volume II

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-12-01

    This document presents a summary of electric power industry statistics. Data are included on electric utility retail sales of electricity, revenues, environmental information, power transactions, emissions, and demand-side management.

  20. Electric Power Monthly, July 1990

    Energy Technology Data Exchange (ETDEWEB)

    1990-10-12

    The Electric Power Monthly (EPM) is prepared by the Electric Power Division; Office of Coal, Nuclear, Electric and Alternate Fuels, Energy Information Administration (EIA), Department of Energy. This publication provides monthly statistics at the national, Census division, and State levels for net generation, fuel consumption, fuel stocks, quantity and quality of fuel, cost of fuel, electricity sales, and average revenue per kilowatthour of electricity sold. Data on net generation are also displayed at the North American Electric Reliability Council (NERC) region level. Additionally, company and plant level information are published in the EPM on capability of new plants, net generation, fuel consumption, fuel stocks, quantity and quality of fuel, and cost in fuel. Quantity, quality, and cost of fuel data lag the net generation, fuel consumption, fuel stocks, electricity sales, and average revenue per kilowatthour data by 1 month. This difference in reporting appears in the national, Census division, and State level tables. However, at the plant level, all statistics presented are for the earlier month for the purpose of comparison. 12 refs., 4 figs., 48 tabs.

  1. Electric-bicycle propulsion power

    Energy Technology Data Exchange (ETDEWEB)

    Oman, H.; Morchin, W.C. [Electro-Bicycle, Inc., Auburn, WA (United States); Jamerson, F.E. [Electric Battery Bicycle Co., Naples, FL (United States)

    1995-12-31

    In a human-powered hybrid electric vehicle (HPHEV) the travel distance available from a single battery charge can be lengthened with power from another source, the cyclist`s leg muscles. In a battery-powered electric bicycle the propulsion power goes mostly into overcoming aerodynamic drag. For example, at 18 km per hour (11 miles per hour) this drag represents 200 watts at the tire-to-road interface for a typical cyclist`s shape and clothing. Today`s typical electrical bicycle is propelled by a high-speed dc motor which is powered from a lead-acid battery. The combined efficiency of the motor and its speed-reducing gears is 50 to 65 percent. In this paper we calculate available travel distances, as a function of speed, grade, and the battery energy-content as measured in watt-hours per kg. We show the effect of battery cost and charge/discharge cycle-life on travel cost in terms of cents per kilometer travelled. Designs used in today`s electric bicycles are illustrated.

  2. Electrical part Temelin NPP - important electrical appliance power supply

    OpenAIRE

    Trnka, Radek

    2009-01-01

    Radek Trnka Department of Physics, Faculty of Education, University of South Bohemia Electrical part of Temelin Nuclear Power Station - Power supply of important electrical appliances The subject of this bachelor's work is an elaboration of problems of secured electric power supply for all important appliances in Temelin Nuclear Power Station (JE Temelin). There is an essential electrical conception of the nuclear power station described there, as well as possibilities of failure state emerge...

  3. Electric power monthly, October 1993

    Energy Technology Data Exchange (ETDEWEB)

    1993-10-20

    The Electric Power Monthly (EPM) presents monthly electricity statistics. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. Data in this report are presented for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The EIA collected the information in this report to fulfill its data collection and dissemination responsibilities as specified in the Federal Energy Administration Act of 1974 (Public Law 93-275) as amended. This publication provides monthly statistics at the US, Census division, and State levels for net generation, fossil fuel consumption and stocks, quantity and quality of fossil fuels, cost of fossil fuels, electricity sales, revenue, and average revenue per kilowatthour of electricity sold. Data on net generation, fuel consumption, fuel stocks, quantity and cost of fossil fuels are also displayed for the North American Electric Reliability Council (NERC) regions. Statistics by company and plant are published in the EPM on the capability of new generating units, net generation, fuel consumption, fuel stocks, quantity and quality of fuel, and cost of fossil fuels.

  4. Electric power monthly, February 1994

    Energy Technology Data Exchange (ETDEWEB)

    1994-02-16

    The Electric Power Monthly (EMP) presents monthly electricity statistics. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. Data in this report are presented for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The EIA collected the information in this report to fulfill its data collection and dissemination responsibilities as specified in the Federal Energy Administration Act of 1974 (Public Law 93-275) as amended. This publication provides monthly statistics at the US, Census division, and State levels for net generation, fossil fuel consumption and stocks, quantity and quality of fossil fuels, cost of electricity sales, revenue, and average revenue per kilowatthour of electricity sold. Data on net generation, fuel consumption, fuel stocks, quantity and cost of fossil fuels are also displayed for the North American Electric Reliability Council (NERC) regions. Statistics by company and plant are published in the EPM on the capability of new generating units, net generation, fuel consumption, fuel stocks, quantity and quality of fuel, and cost of fossil fuels.

  5. Electric power monthly, January 1994

    Energy Technology Data Exchange (ETDEWEB)

    1994-01-26

    The Electric Power Monthly (EPM) presents monthly electricity statistics. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. Data in this report are presented for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The EIA collected the information in this report to fulfill its data collection and dissemination responsibilities as specified in the Federal Energy Administration Act of 1974 (Public Law 93-275) as amended. This publication provides monthly statistics at the US Census division, and State levels for net generation, fossil fuel consumption and stocks, quantity and quality of fossil fuels, cost of fossil fuels, electricity sales, revenue, and average revenue per kilowatthour of electricity sold. Data on net generation, fuel consumption, fuel stocks, quantity and cost of fossil fuels are also displayed for the North American Electric Reliability Council (NERC) regions. Statistics by company and plant are published in the EPM on the capability of new generating units, net generation, fuel consumption, fuel stocks, quantity and quality of fuel, and cost of fossil fuels.

  6. Electric power annual 1995. Volume II

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-12-01

    This document summarizes pertinent statistics on various aspects of the U.S. electric power industry for the year and includes a graphic presentation. Data is included on electric utility retail sales and revenues, financial statistics, environmental statistics of electric utilities, demand-side management, electric power transactions, and non-utility power producers.

  7. Use of wastes as option for the mitigation of CO{sub 2} emissions in the Brazilian power sector

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, Luciano Basto; Henriques, Rachel Martins [Virtual Institute of Climate Change (IVIG/COPPE/UFRJ), Caixa Postal 68565, CEP 21945-970, Ilha do Fundao, Rio de Janeiro (Brazil); Pereira, Amaro Olimpio Jr. [Center for Integrated Studies of the Environment and Climate Change (CentroClima/COPPE/UFRJ), Caixa Postal 68565, CEP 21945-970, Ilha do Fundao, Rio de Janeiro (Brazil)

    2010-12-15

    The present study presents an analysis of the options available for the mitigation of CO{sub 2} emissions in the Brazilian power sector. The objective is to verify the potential use of wastes for electrical energy generation and its competitiveness in comparison with other sources of renewable energy. A comparison was made using marginal abatement cost curves derived from a reference scenario obtained from earlier studies dealing with the expansion of the Brazilian power sector. The results showed that the availability of wastes is significant and that they can be used at a cost 20-60% lower than that of wind power generation, a subsidized source of energy in Brazil. It can therefore be concluded that it would be more efficient if incentives were applied to the use of wastes for electrical power generation since it offers socio-environmental benefits which go far beyond the reduction of CO{sub 2} emissions. (author)

  8. Electric power monthly, July 1994

    Energy Technology Data Exchange (ETDEWEB)

    1994-07-01

    The Electric Power Monthly (EPM) presents monthly electricity statistics. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. Data in this report are presented for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The EIA collected the information in this report to fulfill its data collection and dissemination responsibilities as specified in the Federal Energy Administration Act of 1974 (Public Law 93-275) as amended. The EPM is prepared by the Survey Management Division; Office of Coal, Nuclear, Electric and Alternate Fuels, Energy Information Administration (EIA), Department of Energy. This publication provides monthly statistics at the US, Census division, and State levels for net generation, fossil fuel consumption and stocks, quantity and quality of fossil fuels, cost of fossil fuels, electricity sales, revenue, and average revenue per kilowatthour of electricity sold. Data on net generation, fuel consumption, fuel stocks, quantity and cost of fossil fuels are also displayed for the North American Electric Reliability Council (NERC) regions. Statistics by company and plant are published in the EPM on the capability of new generating units, net generation, fuel consumption, fuel stocks, quantity and quality of fuel, and cost of fossil fuels. Data on quantity, quality, and cost of fossil fuels lag data on net generation, fuel consumption, fuel stocks, electricity sales, and average revenue per kilowatthour by 1 month. This difference in reporting appears in the US, Census division, and State level tables. However, for purposes of comparison, plant-level data are presented for the earlier month.

  9. Electric Power Monthly, June 1990

    Energy Technology Data Exchange (ETDEWEB)

    1990-09-13

    The EPM is prepared by the Electric Power Division; Office of Coal, Nuclear, Electric and Alternate Fuels, Energy Information Administration (EIA), Department of Energy. This publication provides monthly statistics at the national, Census division, and State levels for net generation, fuel consumption, fuel stocks, quantity and quality of fuel, electricity sales, and average revenue per kilowatthour of electricity sold. Data on net generation are also displayed at the North American Electric Reliability Council (NERC) region level. Additionally, company and plant level information are published in the EPM on capability of new plants, net generation, fuel consumption, fuel stocks, quantity and quality of fuel, and cost of fuel. Quantity, quality, and cost of fuel data lag the net generation, fuel consumption, fuel stocks, electricity sales, and average revenue per kilowatthour data by 1 month. This difference in reporting appears in the national, Census division, and State level tables. However, at the plant level, all statistics presented are for the earlier month for the purpose of comparison. 40 tabs.

  10. Opening up to the private sector for electric power supply; Uma reabertura a iniciativa privada

    Energy Technology Data Exchange (ETDEWEB)

    Alqueres, Jose Luiz [ELETROBRAS, Brasilia, DF (Brazil)

    1993-12-31

    A summary of the electric power policy adopted by the Brazilian government in the last sixty years is presented. Due to this policy all the electric power producers became state-owned and the tariff levels applied were below the average levels in the developed countries. A new legislation recently voted will permit the participation of private enterprises in the sector and the necessary growth in electricity production 4 figs., 8 tabs.

  11. TEP Power Partners Project [Tucson Electric Power

    Energy Technology Data Exchange (ETDEWEB)

    None, None

    2014-02-06

    The Arizona Governor’s Office of Energy Policy, in partnership with Tucson Electric Power (TEP), Tendril, and Next Phase Energy (NPE), formed the TEP Power Partners pilot project to demonstrate how residential customers could access their energy usage data and third party applications using data obtained from an Automatic Meter Reading (AMR) network. The project applied for and was awarded a Smart Grid Data Access grant through the U.S. Department of Energy. The project participants’ goal for Phase I is to actively engage 1,700 residential customers to demonstrate sustained participation, reduction in energy usage (kWh) and cost ($), and measure related aspects of customer satisfaction. This Demonstration report presents a summary of the findings, effectiveness, and customer satisfaction with the 15-month TEP Power Partners pilot project. The objective of the program is to provide residential customers with energy consumption data from AMR metering and empower these participants to better manage their electricity use. The pilot recruitment goals included migrating 700 existing customers from the completed Power Partners Demand Response Load Control Project (DRLC), and enrolling 1,000 new participants. Upon conclusion of the project on November 19, 2013; 1,390 Home Area Networks (HANs) were registered; 797 new participants installed a HAN; Survey respondents’ are satisfied with the program and found value with a variety of specific program components; Survey respondents report feeling greater control over their energy usage and report taking energy savings actions in their homes after participating in the program; On average, 43 % of the participants returned to the web portal monthly and 15% returned weekly; and An impact evaluation was completed by Opinion Dynamics and found average participant savings for the treatment period1 to be 2.3% of their household use during this period.2 In total, the program saved 163 MWh in the treatment period of 2013.

  12. Dushan Boroyevich named American Electric Power Professor

    OpenAIRE

    Crumbley, Liz

    2006-01-01

    Dushan Boroyevich, professor of electrical engineering in the College of Engineering at Virginia Tech, was named the American Electric Power Professor of Electrical and Computer Engineering by the Virginia Tech Board of Visitors during the board's quarterly meeting June 12.

  13. Probabilistic Fault Diagnosis in Electrical Power Systems

    Data.gov (United States)

    National Aeronautics and Space Administration — Electrical power systems play a critical role in spacecraft and aircraft. This paper discusses our development of a diagnostic capability for an electrical power...

  14. Electrical power distribution control methods, electrical energy demand monitoring methods, and power management devices

    Science.gov (United States)

    Chassin, David P.; Donnelly, Matthew K.; Dagle, Jeffery E.

    2006-12-12

    Electrical power distribution control methods, electrical energy demand monitoring methods, and power management devices are described. In one aspect, an electrical power distribution control method includes providing electrical energy from an electrical power distribution system, applying the electrical energy to a load, providing a plurality of different values for a threshold at a plurality of moments in time and corresponding to an electrical characteristic of the electrical energy, and adjusting an amount of the electrical energy applied to the load responsive to an electrical characteristic of the electrical energy triggering one of the values of the threshold at the respective moment in time.

  15. The Brazilian electric power sector reformulation process: an analysis of the veto players; O processo de reforma do setor eletrico brasileiro: uma analise dos 'veto players'

    Energy Technology Data Exchange (ETDEWEB)

    Roxo, Leticia

    2007-07-01

    The electric power sector reformulation implemented in the Brazil makes evident the intrinsic difficulty to handle with complex set of veto players. The multiplicity of veto players characterized by distinct ideologies results in the multiplication of business rounds related to the elaboration and implementation of the new game rules, whose agreement involves conflicts on the presented proposal, resulting in the slowness pf reformulation process conclusion.

  16. Control of power swings between brazilian southern and southeastern systems

    Energy Technology Data Exchange (ETDEWEB)

    Caldas, G.P.; Botelho, M.J.; Carvalho, J.F.M.; Gomes, J.R. [ELETROSUL, Curitiba, PR (Brazil)

    1987-12-31

    This report contains an explanation of the stability problems and the operational procedures used to control the power swings observed between the electric power systems of the South and Southeast of Brazil. The time period from August 1985 to May 1987 covered in this paper corresponds to the initial operation and expansion of Itaipu power plant and its associated transmission system. 7 refs., 2 figs.

  17. Brazilian pharmaceutical diplomacy: social democratic principles versus soft power interests.

    Science.gov (United States)

    Flynn, Matthew

    2013-01-01

    Current debates concerning the rise of health diplomacy are polarized between competing international relations theories of realism, based on power politics, and constructivist approaches, which emphasize the norms, values, and identities shaping foreign policies. A case study of Brazil's health diplomacy over the past 10 years, focusing on issues related to pharmaceuticals, seeks to provide data to assess these theories. The country's intellectual property disputes, multilateral lobbying efforts, and foreign assistance programs are contrasted with those of the United States, Mexico, and other countries. Instead of viewing Brazilian efforts as a form of soft power, the evidence suggests that the origins of Brazil's involvement and continued efforts in this arena stem more from values based on human rights and social democratic principles. A close examination of domestic political considerations leads to a more nuanced understanding of the drivers behind a country's health diplomacy.

  18. Introduction to electrical power and power electronics

    CERN Document Server

    Patel, Mukund R

    2012-01-01

    Power Generation, Distribution, and Utilization AC Power Fundamentals Common Aspects of Power Equipments AC Generator AC and DC Motors Transformer Power Cable Power Distribution Fault Current Analysis System ProtectionEconomic Use of PowerElectrochemical BatteryPower Electronics and Motor Drives Power Electronics Devices DC-DC Converters AC-DC-AC Converters Variable-Frequency Drives Quality of Power Power Converter CoolingAppendixIndex

  19. Electric power annual 1997. Volume 1

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-07-01

    The Electric Power Annual presents a summary of electric power industry statistics at national, regional, and State levels. The objective of the publication is to provide industry decisionmakers, government policy-makers, analysts, and the general public with data that may be used in understanding US electricity markets. The Electric Power Annual is prepared by the Electric Power Division; Office of Coal, Nuclear, Electric and Alternate Fuels; Energy Information Administration (EIA); US Department of Energy. Volume 1 -- with a focus on US electric utilities -- contains final 1997 data on net generation and fossil fuel consumption, stocks, receipts, and cost; preliminary 1997 data on generating unit capability, and retail sales of electricity, associated revenue, and the average revenue per kilowatthour of electricity sold (based on a monthly sample: Form EIA-826, ``Monthly Electric Utility Sales and Revenue Report with State Distributions``). Additionally, information on net generation from renewable energy sources and on the associated generating capability is included in Volume 1 of the EPA.

  20. Wildlife and electric power transmission

    Science.gov (United States)

    Ellis, D.H.; Goodwin, J.G.; Hunt, J.R.; Fletcher, John L.; Busnel, R.G.

    1978-01-01

    Hundreds of thousands of miles of transmission lines have been introduced into our natural environment. These lines and their corridors can be damaging or beneficial to wildlife communities depending on how they are designed, where they are placed, and when they are constructed and maintained. With the current trend toward UHV systems, new problems (associated with additional increments in audible noise, electric and magnetic force fields, etc.) must be addressed. We recommend the following areas for careful study: (1) the response of wilderness species to transmission lines and line construction and maintenance activities (2) the magnitude of bird collision and electrocution mortality, (3) the response of power corridor and power tower in habiting wildlife to laboratory and field doses of electro-chemical oxidants, corona noise, electric and magnetic fields, etc., (4) the productivity of tower inhabiting birds compared with nearby non-tower nesters, and (5) the influence of powerline corridors on mammalian and avian migration patterns. It is our hope that the questions identified in this study will help stimulate further research so that we can maximize wildlife benefits and minimize wildlife detriments.

  1. The electric power engineering handbook electric power generation, transmission, and distribution

    CERN Document Server

    Grigsby, Leonard L

    2012-01-01

    Featuring contributions from worldwide leaders in the field, the carefully crafted Electric Power Generation, Transmission, and Distribution, Third Edition (part of the five-volume set, The Electric Power Engineering Handbook) provides convenient access to detailed information on a diverse array of power engineering topics. Updates to nearly every chapter keep this book at the forefront of developments in modern power systems, reflecting international standards, practices, and technologies. Topics covered include: * Electric Power Generation: Nonconventional Methods * Electric Power Generation

  2. Electric power system applications of optimization

    CERN Document Server

    Momoh, James A

    2008-01-01

    Introduction Structure of a Generic Electric Power System  Power System Models  Power System Control Power System Security Assessment  Power System Optimization as a Function of Time  Review of Optimization Techniques Applicable to Power Systems Electric Power System Models  Complex Power Concepts Three-Phase Systems Per Unit Representation  Synchronous Machine Modeling Reactive Capability Limits Prime Movers and Governing Systems  Automatic Gain Control Transmission Subsystems  Y-Bus Incorporating the Transformer Effect  Load Models  Available Transfer Capability  Illustrative Examples  Power

  3. Vehicle-to-Grid Power in Danish Electric Power Systems

    DEFF Research Database (Denmark)

    Pillai, Jayakrishnan Radhakrishna; Bak-Jensen, Birgitte

    2009-01-01

    The integration of renewable energy systems is often constrained by the variable nature of their output. This demands for the services of storing the electricity generated from most of the renewable energy sources. Vehicle-to-grid (V2G) power could use the inherent energy storage of electric...... vehicles and its quick response time to balance and stabilize a power system with fluctuating power. This paper outlines the use of battery electric vehicles in supporting large-scale integration of renewable energy in the Danish electric power systems. The reserve power requirements for a high renewable...... energy penetration could be met by an amount of V2G based electric vehicles less than 10% of the total vehicle need in Denmark. The participation of electric vehicle in ancillary services would earn significant revenues to the vehicle owner. The power balancing services of electric vehicles...

  4. Compact portable electric power sources

    Energy Technology Data Exchange (ETDEWEB)

    Fry, D.N.; Holcomb, D.E.; Munro, J.K.; Oakes, L.C.; Matson, M.J.

    1997-02-01

    This report provides an overview of recent advances in portable electric power source (PEPS) technology and an assessment of emerging PEPS technologies that may meet US Special Operations Command`s (SOCOM) needs in the next 1--2- and 3--5-year time frames. The assessment was performed through a literature search and interviews with experts in various laboratories and companies. Nineteen PEPS technologies were reviewed and characterized as (1) PEPSs that meet SOCOM requirements; (2) PEPSs that could fulfill requirements for special field conditions and locations; (3) potentially high-payoff sources that require additional R and D; and (4) sources unlikely to meet present SOCOM requirements. 6 figs., 10 tabs.

  5. Wind wheel electric power generator

    Science.gov (United States)

    Kaufman, J. W. (Inventor)

    1980-01-01

    Wind wheel electric power generator apparatus includes a housing rotatably mounted upon a vertical support column. Primary and auxiliary funnel-type, venturi ducts are fixed onto the housing for capturing wind currents and conducting to a bladed wheel adapted to be operatively connected with the generator apparatus. Additional air flows are also conducted onto the bladed wheel; all of the air flows positively effecting rotation of the wheel in a cumulative manner. The auxiliary ducts are disposed at an acute angle with respect to the longitudinal axis of the housing, and this feature, together with the rotatability of the housing and the ducts, permits capture of wind currents within a variable directional range.

  6. Electric power annual 1997. Volume 2

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-10-01

    The Electric Power Annual 1997, Volume 2 contains annual summary statistics at national, regional, and state levels for the electric power industry, including information on both electric utilities and nonutility power producers. Included are data for electric utility retail sales of electricity, associated revenue, and average revenue per kilowatthour of electricity sold; financial statistics; environmental statistics; power transactions; and demand-side management. Also included are data for US nonutility power producers on installed capacity; gross generation; emissions; and supply and disposition of energy. The objective of the publication is to provide industry decisionmakers, government policymakers, analysts, and the general public with historical data that may be used in understanding US electricity markets. 15 figs., 62 tabs.

  7. Analysis of constraints to the introduction of LNG plants in the Brazilian electric sector; Analise dos condicionantes para a introducao de plantas a GNL no setor eletrico brasileiro

    Energy Technology Data Exchange (ETDEWEB)

    Cortes, Tatiane Moraes Pestana

    2010-03-15

    This work aims analyze the constraints to the introduction of LNG in the Brazilian energy matrix. Therefore, considers the current regulatory framework and the investments recently made by PETROBRAS to acquire LNG in the international market in order to supply power plants in the country. In order to assess the current status of the LNG plants in the electricity sector, factors are analyzed in terms of the natural gas industry and electric power industry, such as: storage, LNG contracts, operating dispatch, LNG plants pricing and operational flexibility. Despite the increase in LNG international trade and the prospect of using this product in Brazil, there are some challenges for the effective use of LNG plants by Brazilian electric sector. Some of the challenges are the need to review the methodology of calculating the cost benefit of LNG power plants. Another important challenge is to examine the use of underground storage and its influence in the operating dispatch of LNG plants. (author)

  8. Electric power annual 1995. Volume I

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-07-01

    The Electric Power Annual presents a summary of electric power industry statistics at national, regional, and State levels. The objective of the publication is to provide industry decisionmakers, government policymakers, analysts, and the general public with data that may be used in understanding U.S. electricity markets. The Electric Power Annual is prepared by the Coal and Electric Data and Renewables Division; Office of Coal, Nuclear, Electric and Alternate Fuels; Energy Information Administration (EIA); U.S. Department of Energy. In the private sector, the majority of the users of the Electric Power Annual are researchers and analysts and, ultimately, individuals with policy- and decisionmaking responsibilities in electric utility companies. Financial and investment institutions, economic development organizations interested in new power plant construction, special interest groups, lobbyists, electric power associations, and the news media will find data in the Electric Power Annual useful. In the public sector, users include analysts, researchers, statisticians, and other professionals with regulatory, policy, and program responsibilities for Federal, State, and local governments. The Congress and other legislative bodies may also be interested in general trends related to electricity at State and national levels. Much of the data in these reports can be used in analytic studies to evaluate new legislation. Public service commissions and other special government groups share an interest in State-level statistics. These groups can also compare the statistics for their States with those of other jurisdictions.

  9. Electrical power generation by mechanically modulating electrical double layers.

    Science.gov (United States)

    Moon, Jong Kyun; Jeong, Jaeki; Lee, Dongyun; Pak, Hyuk Kyu

    2013-01-01

    Since Michael Faraday and Joseph Henry made their great discovery of electromagnetic induction, there have been continuous developments in electrical power generation. Most people today get electricity from thermal, hydroelectric, or nuclear power generation systems, which use this electromagnetic induction phenomenon. Here we propose a new method for electrical power generation, without using electromagnetic induction, by mechanically modulating the electrical double layers at the interfacial areas of a water bridge between two conducting plates. We find that when the height of the water bridge is mechanically modulated, the electrical double layer capacitors formed on the two interfacial areas are continuously charged and discharged at different phases from each other, thus generating an AC electric current across the plates. We use a resistor-capacitor circuit model to explain the results of this experiment. This observation could be useful for constructing a micro-fluidic power generation system in the near future.

  10. Formulation of a projection model of electric power demand applied to isolated systems in natural development: the case of the brazilian electric company of Rondonia territory; Formulacao de um modelo de projecao de demanda de energia eletrica aplicado a sistemas isolados em desenvolvimento natural: o caso da CERON - Centrais Eletricas de Rondonia

    Energy Technology Data Exchange (ETDEWEB)

    Dourado, Rosana Aparecida

    2004-07-01

    The Electricity inserts it self more than other services in the economy and in the Brasilian society resulting an increase of market of electrical energy more than that of economy e consequently in the national energy bases. Given the importance of the definition of the demand of electrical energy inside the development process of a region, the objective of this dissertation is to propose a model of forecasting energy demand applied to a small scale utility. With basing on the foundation that the electrical energy demand varies accordingly with the region, social levels and economical conditions and also the activities developed, the method utilized was a definition of a set of representative variables in this context, using the relation between the population an the number of residential consumers; consumption per residential consumer and the consumption structure of the residential segment over the total demand. The results with the application of the model utilizing this philosophy of the technique of modeling scenes, permitted the definition of electrical energy demand for the market of the Brazilian electric company CERON S.A. like a case study. (author)

  11. Hybrid electric vehicle power management system

    Energy Technology Data Exchange (ETDEWEB)

    Bissontz, Jay E.

    2015-08-25

    Level voltage levels/states of charge are maintained among a plurality of high voltage DC electrical storage devices/traction battery packs that are arrayed in series to support operation of a hybrid electric vehicle drive train. Each high voltage DC electrical storage device supports a high voltage power bus, to which at least one controllable load is connected, and at least a first lower voltage level electrical distribution system. The rate of power transfer from the high voltage DC electrical storage devices to the at least first lower voltage electrical distribution system is controlled by DC-DC converters.

  12. Exhaustion of the Brazilian electric sector regulatory model: theoretical versus practical aspects; Esgotamento do modelo regulatorio do setor eletrico brasileiro: aspectos teoricos versus aspectos praticos

    Energy Technology Data Exchange (ETDEWEB)

    Pereira, Marcio Giannini; Carpio, Lucio Guido Tapia [Universidade Federal, Rio de Janeiro, RJ (Brazil). Coordenacao dos Programas de Pos-graduacao de Engenharia. Programa de Planejamento Energetico]. E-mails: marciogiannini@hotmail.com; guido@ppe.ufrj.br

    2002-07-01

    The recent Brazilian regulatory experience demonstrates that it is no easy the changing for a new performance and behaviour model in the electric sector, mainly when it is observed the distance among initial objectives of the reform and the obtained results. The reforms introduction in the sector, which in ultimate analysis aimed the efficiency increasing in the sector, supported by a fragile institutional structure and regulatory collapse, obtained as unfolding the crisis of the electric power in 2001. (author)

  13. Power quality load management for large spacecraft electrical power systems

    Science.gov (United States)

    Lollar, Louis F.

    1988-01-01

    In December, 1986, a Center Director's Discretionary Fund (CDDF) proposal was granted to study power system control techniques in large space electrical power systems. Presented are the accomplishments in the area of power system control by power quality load management. In addition, information concerning the distortion problems in a 20 kHz ac power system is presented.

  14. Electric power systems analysis and control

    CERN Document Server

    Saccomanno, Fabio

    2003-01-01

    "Highly relevant and timely in scope, the book is essential reading for anyone associated with electric power systems, including students and teachers of power engineering courses, professionals in the industry, consultants, and researchers."--Jacket.

  15. Electric power monthly, September 1990. [Glossary included

    Energy Technology Data Exchange (ETDEWEB)

    1990-12-17

    The purpose of this report is to provide energy decision makers with accurate and timely information that may be used in forming various perspectives on electric issues. The power plants considered include coal, petroleum, natural gas, hydroelectric, and nuclear power plants. Data are presented for power generation, fuel consumption, fuel receipts and cost, sales of electricity, and unusual occurrences at power plants. Data are compared at the national, Census division, and state levels. 4 figs., 52 tabs. (CK)

  16. Electric Vehicles in Power Systems with 50% Wind Power Penetration

    DEFF Research Database (Denmark)

    Østergaard, Jacob; Foosnæs, Anders; Xu, Zhao

    2009-01-01

    . This paper analyse the potential for using EVs in Denmark and identify the benefits of the electric power system with high wind power generation by intelligent charging of the EVs. Based on the analysis important technology gabs are identified, and the corresponding research and development initiatives...... will be an important balancing measure to enable the Danish government’s energy strategy, which implies 50% wind power penetration in the electric power system. An EV will be a storage device for smoothing power fluctuations from renewable resources especially wind power and provide valuable system services...... for a reliable power system operation. Cost-benefit analysis shows that intelligent bidirectional charging – vehicle to grid (V2G) – provides a socio-economic profit of 150 million Euro/year in the Danish electric power system in 2025 assuming that 15% of the Danish road transport need is supplied by electricity...

  17. Query Methods of Electric Power System

    Institute of Scientific and Technical Information of China (English)

    Zou Haokai; Wu Xusheng

    2016-01-01

    With the development of electric power network, the quantities and styles of power equipment also increase at every time. It is very important to achieve the information in the power system of the equipment operation fast and effectively. This article summarizes three current commonly methods for power system then analyses the advantages, disadvantages and discusses the application territory respectively.

  18. Electric power monthly, March 1995

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-03-20

    This report for March 1995, presents monthly electricity statistics for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead.

  19. The Brazilian electric energy market. Lessons and perspectives; O mercado brasileiro de energia eletrica. Licoes e perspectivas decorrentes do racionamento

    Energy Technology Data Exchange (ETDEWEB)

    Ramalho, Edna Lopes [Universidade Estadual de Campinas, SP (Brazil). Faculdade de Engenharia Civil. Nucleo Interdisciplinar de Planejamento Energetico; Andrade, Moacyr Trindade de Oliveira [CSPE - Comissao de Servicos Publicos de Energia, Sao Paulo, SP (Brazil)

    2002-07-01

    This paper analyses the technical and commercial characteristics of the electric power Brazilian market taking into account his constitution and structuration, the throwback during the operation and adjustings due to rationing administrative process, where various alternatives of commercialization were identified, considering the full supply unavailability. The paper intends to present the implications decurrent from the gradual maturing of the consumption market and the new actors, resulting from the national market restructuration, the initial premises and the acceleration of the market opening time schedule, consequence of the adjustings introduced during the period of the Southeast, Centralwest and Northeast regions rationing, in the period of 2001-21002.

  20. Electric Power Monthly, August 1990. [Glossary included

    Energy Technology Data Exchange (ETDEWEB)

    1990-11-29

    The Electric Power Monthly (EPM) presents monthly summaries of electric utility statistics at the national, Census division, and State level. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. Data includes generation by energy source (coal, oil, gas, hydroelectric, and nuclear); generation by region; consumption of fossil fuels for power generation; sales of electric power, cost data; and unusual occurrences. A glossary is included.

  1. The impacts of the generation of biomass power plants in the Brazilian hydrothermal dispatch and its influence on the formation of prices of electric power in Brazil; Os impactos da geracao de usinas a biomassa no despacho hidrotermico brasileiro e sua influencia na formacao do preco da energia eletrica no Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Pereira, Luiz Eduardo S.; Ribeiro, Paulo [Universidade Federal de Juiz de Fora (UFJF), MG (Brazil)], Emails: luizeduardo_jf@yahoo.com.br, pfribeiro@ieee.org; Tardin, Thiago V. [Engenho Pesquisa, Desenvolvimento e Consultoria Ltda., Rio de Janeiro, RJ (Brazil)], E-mail: thiago@engenho.com

    2009-07-01

    The positive and negative impacts of the electric energy generation from biomass of sugar in the Brazilian energy matrix are presented, as well as in the hydrothermal dispatch. Studies on the impacts of the generation sources using sugar cane bagasse in the operational planning and in the composition of the electric energy price are done. Computational implementations using optimized methods, as the stochastic dual dynamic programing, are done, to support the decision making and to compare the obtained results. It is, also presented the commercialization rules for energy in the Free Contracting Environment and in the Regulated Contracting Environment related to the alternative sources of energy, as well as the mechanisms of encouraged energy auction (reserve auction) and the rules for commercialization of energy applied to encouraged sources.

  2. SITE ELECTRICAL POWER SYSTEM DESCRIPTION DOCUMENT

    Energy Technology Data Exchange (ETDEWEB)

    E.P. McCann

    1999-04-16

    The Site Electrical Power System receives and distributes utility power to all North Portal site users. The major North Portal users are the Protected Area including the subsurface facility and Balance of Plant areas. The system is remotely monitored and controlled from the Surface Operations Monitoring and Control System. The system monitors power quality and provides the capability to transfer between Off-Site Utility and standby power (including dedicated safeguards and security power). Standby power is only distributed to selected loads for personnel safety and essential operations. Security power is only distributed to essential security operations. The standby safeguards and security power is independent from all other site power. The system also provides surface lighting, grounding grid, and lightning protection for the North Portal. The system distributes power during construction, operation, caretaker, and closure phases of the repository. The system consists of substation equipment (disconnect switches, breakers, transformers and grounding equipment) and power distribution cabling from substation to the north portal switch gear building. Additionally, the system includes subsurface facility substation (located on surface), switch-gear, standby diesel generators, underground duct banks, power cables and conduits, switch-gear building and associated distribution equipment for power distribution. Each area substation distributes power to the electrical loads and includes the site grounding, site lighting and lightning protection equipment. The site electrical power system distributes power of sufficient quantity and quality to meet users demands. The Site Electrical Power System interfaces with the North Portal surface systems requiring electrical power. The system interfaces with the Subsurface Electrical Distribution System which will supply power to the underground facilities from the North Portal. Power required for the South Portal and development side

  3. Electric power annual 1996. Volume 1

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-08-01

    The Electric Power Annual presents a summary of electric power industry statistics at national, regional, and State levels. The objective of the publication is to provide industry decisionmakers, government policy-makers, analysts, and the general public with data that may be used in understanding US electricity markets. The Electric Power Annual is prepared by the Coal and Electric Data and Renewables Division; Office of Coal, Nuclear, Electric and Alternate Fuels; Energy Information Administration (EIA); US Department of Energy. Volume 1--with a focus on US electric utilities--contains final 1996 data on net generation and fossil fuel consumption, stocks, receipts, and cost; preliminary 1996 data on generating unit capability, and retail sales of electricity, associated revenue, and the average revenue per kilowatthour of electricity sold. Additionally, information on net generation from renewable energy sources and on the associated generating capability is included in Volume 1 of the EPA. Data published in the Electric Power Annual Volume 1 are compiled from three statistical forms filed monthly and two forms filed annually by electric utilities. These forms are described in detail in the Technical Notes. 5 figs., 30 tabs.

  4. International trade with electric power

    OpenAIRE

    Årdal, Frode

    2009-01-01

    In 2003 the European Commission introduced the Directive 2003/54/EC and Regulation 1228/2003/EC which increased the focus on the liberalization of the European electricity market. The international electricity trade has increased and created new challenges related to cross-border transmission and compensation mechanisms. The focus of the report has been to discuss the development of the electricity market in Europe, and the status of international exchange. The report also discusses the con...

  5. Electric power monthly, May 1996

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-05-01

    This publication presents monthly electricity statistics for a wide audience including Congress, Federal and Stage agencies, the electric utility industry, and the general public. Purpose is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. EIA collected the information to fulfill its data collection and dissemination responsibilities in Federal Energy Administration Act of 1974 (Public Law 93-275) as amended.

  6. Electric Power monthly, November 1996

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-11-01

    This publication presents monthly electricity statistics for a wide audience including Congress, Federal and state agencies, the electric utility industry, and the general public. Purpose is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. EIA collected the information in this report to fulfill its data collection and dissemination responsibilities as specified in the Federal Energy Administration Act of 1974 (Public Law 93-275) as amended.

  7. Electrical Power Budget for FCC-ee

    CERN Document Server

    Aull, S.; Bozzini, D.; Brunner, O.; Burnet, J.-P.; Butterworth, A.; Calaga, R.; Jensen, E.; Mertens, V.; Milanese, A.; Nonis, M.; Oide, K.; Schwerg, N.; Tavian, L.; Wenninger, J.; Zimmermann, F.; Rinolfi, L; Blondel, A.; Koratzinos, M.; Gorgi Zadeh, S.

    2016-01-01

    We present a first rough estimate for the electrical power consumption of the FCC-ee lepton collider. This electrical power is dominated by the RF system, which provides the motivation for the ongoing R&D on highly efficient RF power sources. Other contributions come from the warm arc magnets, the cryogenics systems, cooling, ventilation, general services, the particle-physics detectors, and the injector complex.

  8. Soft Power, Hard Aspirations: the Shifting Role of Power in Brazilian Foreign Policy

    Directory of Open Access Journals (Sweden)

    Marcelo M. Valença

    2014-12-01

    Full Text Available Journalists and policy analysts have highlighted the emergence of Brazil as a regional power. However, little attention has been paid to its foreign policy strategies. Brazil's rise to prominence in world politics represents the historical culmination of a foreign policy featuring two main strategies – persuasion and consensus building – both of which emphasise the use of soft power. We analyse four current foreign policy initiatives: the campaign for a permanent seat on the UNSC; the development of a nuclear submarine; Brazil's leadership of the UN peacekeeping mission in Haiti; and government support for Brazilian multinationals. We suggest a growing tension between these initiatives and the two strategies identified above. These initiatives reflect the view current among some policymakers that if Brazil is to rise as a global power it must play by the rules of great power politics.

  9. The unitary theory of the electrical powers

    CERN Document Server

    Mihai, Gheorghe

    2009-01-01

    General physics approach is applied to analysis of power components in electrical systems under sinusoidal and non-sinusoidal conditions. Physical essence of active, reactive and distorting powers are determinate. It is shown that the all three powers are the different aspects of the same physical phenomenon: mechanical action per time of Coulomb forces or inertial forces.

  10. Optimal control applications in electric power systems

    CERN Document Server

    Christensen, G S; Soliman, S A

    1987-01-01

    Significant advances in the field of optimal control have been made over the past few decades. These advances have been well documented in numerous fine publications, and have motivated a number of innovations in electric power system engineering, but they have not yet been collected in book form. Our purpose in writing this book is to provide a description of some of the applications of optimal control techniques to practical power system problems. The book is designed for advanced undergraduate courses in electric power systems, as well as graduate courses in electrical engineering, applied mathematics, and industrial engineering. It is also intended as a self-study aid for practicing personnel involved in the planning and operation of electric power systems for utilities, manufacturers, and consulting and government regulatory agencies. The book consists of seven chapters. It begins with an introductory chapter that briefly reviews the history of optimal control and its power system applications and also p...

  11. Electricity for Road Transport, Flexible Power Systems and Wind Power

    DEFF Research Database (Denmark)

    Nielsen, Lars Henrik; Ravn, Hans; Meibom, Peter;

    -vehicle connection systems including technical regulation options and analysis of needs for standardisation. 4: Setting up scenarios covering potential developments for utilizing electric drive trains in road transport. Period: Up to year 2030. 5: Analysis of capacity constraints in the electricity grid...... (transmission and distribution) as consequence of increasing electricity demand, and new flexible consumption patterns from segments in the transport sector, and as consequence of increasing capacity on wind power in the system. 6: Setting up and analysis of combined scenarios covering both the heat and power......The aim of the project is to analyse the potential synergistic interplay that may arise between the power sector and the transport sector, if parts of the road transport energy needs are based on electricity via the utilisation of plug-in hybrid electric vehicles and pure electric vehicles...

  12. Seismic reliability assessment of electric power systems

    Energy Technology Data Exchange (ETDEWEB)

    Singhal, A. [Stanford Univ., CA (United States); Bouabid, J. [Risk Management Solutions, Menlo Park, CA (United States)

    1995-12-31

    This paper presents a methodology for the seismic risk assessment of electric power systems. In evaluating damage and loss of functionality to the electric power components, fragility curves and restoration functions are used. These vulnerability parameters are extracted from the GIS-based regional loss estimation methodology being developed for the US. Observed damage in electric power components during the Northridge earthquake is used to benchmark the methodology. The damage predicted using these vulnerability parameters is found to be in good agreement with the damage observed during the earthquake.

  13. Probabilistic risk benchmark of the Brazilian electrical system; Risco probabilistico de referencia do sistema eletrico brasileiro

    Energy Technology Data Exchange (ETDEWEB)

    Soares, Neyl Hamilton Martelotta

    2002-05-01

    The main goal of this dissertation is to proceed a first numerical evaluation of the probabilistic risks magnitudes associated with the Brazilian Electrical network, considering the subsystems North, Northeast, South, Southeast and Mid West. This result is relevant because it can be used as an initial comparative reference for future reliability studies of the Brazilian Basic Grid. As a by-product, the whole set of criteria and procedures used in the work are described in detail. They may also serve as a preliminary base for future similar evaluations. (author)

  14. A novel electric power quality monitoring system for transient analysis

    OpenAIRE

    2014-01-01

    Electricity is vital for our daily life in modern cites. In order to ensure its reliability and supply, an electric power monitoring system is indispensable in an electric power system. Currently, most electric power monitoring systems are designed for steady-state monitoring only. They may not be able to monitor instantaneous power disturbances, such as voltage surge, happened in electric power systems. In fact, instantaneous power disturbances are frequently found in electric power systems,...

  15. Electric vehicle integration into modern power networks

    CERN Document Server

    Garcia-Valle, Rodrigo

    2012-01-01

    Electric Vehicle Integration into Modern Power Networks provides coverage of the challenges and opportunities posed by the progressive integration of electric drive vehicles. Starting with a thorough overview of the current electric vehicle and battery state-of-the-art, this work describes dynamic software tools to assess the impacts resulting from the electric vehicles deployment on the steady state and dynamic operation of electricity grids, identifies strategies to mitigate them and the possibility to support simultaneously large-scale integration of renewable energy sources.New business mo

  16. Research in power systems: power quality and electricity market

    OpenAIRE

    Amarís Duarte, Hortensia; Usaola, Julio

    2008-01-01

    The research group REDES from UC3M has experience on electricity market, grid integration of wind energy and power quality. The group may offer consulting activities with a high component of research. We are looking for the collaboration of companies devoted to the consulting related to electricity markets, the integration of wind power in the electricity network, and with power quality. Contrato Programa de Comercialización e Internacionalización. Sistema Regional de Investigación Científ...

  17. An Optimum Solution for Electric Power Theft

    Directory of Open Access Journals (Sweden)

    Aamir Hussain Memon

    2013-07-01

    Full Text Available Electric power theft is a problem that continues to plague power sector across the whole country. Every year, the electricity companies face the line losses at an average 20-30% and according to power ministry estimation WAPDA companies lose more than Rs. 125 billion. Significantly, it is enough to destroy the entire power sector of country. According to sources 20% losses means the masses would have to pay extra 20% in terms of electricity tariffs. In other words, the innocent consumers pay the bills of those who steal electricity. For all that, no any permanent solution for this major issue has ever been proposed. We propose an applicable and optimum solution for this impassable problem. In our research, we propose an Electric power theft solution based on three stages; Transmission stage, Distribution stage, and User stage. Without synchronization among all, the complete solution can not be achieved. The proposed solution is simulated on NI (National Instruments Circuit Design Suite Multisim v.10.0. Our research work is an implicit and a workable approach towards the Electric power theft, as for conditions in Pakistan, which is bearing the brunt of power crises already

  18. Lunar Surface Solar Electric Power System Project

    Data.gov (United States)

    National Aeronautics and Space Administration — We propose a concentrated photovoltaic electric power system for lunar operations called C-Lite Lunar. The novel technology produces a near-term solar array system...

  19. Virtual power plants with electric vehicles

    OpenAIRE

    Grau, Iñaki; Papadopoulos, Panagiotis; Skarvelis-Kazakos, Spyros; Cipcigan, Liana M.; Jenkins, Nick

    2010-01-01

    The benefits of integrating aggregated Electric Vehicles (EV) within the Virtual Power Plant (VPP) concept, are addressed. Two types of EV aggregators are identified: i) Electric Vehicle Residential Aggregator (EVRA), which is responsible for the management of dispersed and clustered EVs in a residential area and ii) Electric Vehicle Commercial Aggregator (EVCA), which is responsible for the management of EVs clustered in a single car park. A case study of a workplace EVCA is presented, provi...

  20. An Assessment of the Electric Power Quality and Electrical Installation Impacts on Medical Electrical Equipment Operations at Health Care Facilities

    Directory of Open Access Journals (Sweden)

    Mário C.G. Ramos

    2009-01-01

    Full Text Available Problem statement: Medical electrical equipments at health care facilities presented malfunction and wrong medical information due to poor electric power quality and to inadequate electrical Installations. Some equipment such as X-ray, computerized axial tomography and magnetic resonance imaging are considered as polluting ones due to their high amount of harmonics and voltage transients produced on the electrical power supply when in operation, while other equipments, connected to the same power supply, are considered sensitive or victim ones, presenting failure or producing wrong. Approach: The effects on some sensitive medical electrical equipment were verified in a controlled environment at energy quality technological center of the technical school of the University of Sao Paulo. A heart monitor, pulmonary ventilator and pulse oxymeter equipment types were submitted to a controlled voltage supply with high harmonic content and voltage sags. The test methodology used simulated conditions based on Brazilian NBR standards, ANSI/IEEE Std. 519, IEC 60601 and IEC 61000-4-11 standards. Results: The results of the polluting equipment current consumption measurements as well as the three sensitive equipments tested were presented and discussed. The pulmonary ventilator presented problems that range from stoppage to expiratory valve blockage and alarm system failures. The pulse oxymeter presented display malfunctions and it was extremely sensitive to voltage sags. The heart monitor maintained steady operation in all test cases. Conclusion/Recommendations: In spite of several existing recommendations and standards for testing medical electrical equipments, there is a lack of standard related to test cases considering the effects of high harmonic and voltage sags. The quality of electrical installation in health care facilities needs to be improved to reduce risks to the patients and to provide better health treatment.

  1. Wholesale power marketing in restructured electricity markets

    Energy Technology Data Exchange (ETDEWEB)

    Sioshansi, F.P. [Convector Consulting Inc., Menlo Park, CA (United States); Altman, A. [Electric Power Research Institute, Palo Alto, CA (United States)

    1998-12-01

    Prior to 1992, very few people had heard the term power marketing. Today, power marketing is well-recognized, however, few people know what is behind the industry's exponential growth. This communication, which is based on a major study recently completed for the Electric Power Research Institute (EPRI), explains what power marketing is, who the power marketers are, what they do, and what's behind the industry's explosive growth in the past few years. It also explains what types of products and services power marketers offer, and what are the fundamental drivers of this demand. Understanding the last item is particularly significant, namely the growth of power marketing in the context of the rapid restructuring of the wholesale - soon to be followed by the retail - electricity markets in the US. (author)

  2. Electricity for road transport, flexible power systems and wind power

    Energy Technology Data Exchange (ETDEWEB)

    Nielsen, Lars Henrik; Ravn, H.; Meibom, P. (and others)

    2011-12-15

    The aim of the project is to analyse the potential synergistic interplay that may arise between the power sector and the transport sector, if parts of the road transport energy needs are based on electricity via the utilisation of plug-in hybrid electric vehicles and pure electric vehicles. The project focuses on the technical elements in the chain that comprises: 1: The electric vehicle status, potentials and expected development. Electric batteries are in focus in this part of the analysis. 2: Analysis of plug-in hybrid electric vehicle interacting with a local grid. 3: Analysis of grid-vehicle connection systems including technical regulation options and analysis of needs for standardisation. 4: Setting up scenarios covering potential developments for utilizing electric drive trains in road transport. Period: Up to year 2030. 5: Analysis of capacity constraints in the electricity grid (transmission and distribution) as consequence of increasing electricity demand, and new flexible consumption patterns from segments in the transport sector, and as consequence of increasing capacity on wind power in the system. 6: Setting up and analysis of combined scenarios covering both the heat and power system and the transport sector. (Author)

  3. The structural changes in the brazilian electric sector and the utilities strategic management; A restruturacao do setor eletrico brasileiro e o gerenciamento estrategico das empresas

    Energy Technology Data Exchange (ETDEWEB)

    Lotero, Roberto C.; Santana, Edvaldo Alves de [Santa Catarina Univ., Florianopolis, SC (Brazil). Programa de Pos-graduacao em Engenharia de Producao e Sistemas

    1998-12-31

    The objective of this paper is to show structural and market changes in brazilian electric sector and their implications on new business environment. Factors that will affect power utilities are pointed out and how they should be thoughtful in new model. Is pointed out the strategic change as a mean for utility optimization in efficiency and comparative advantage search. (author) 11 refs.; e-mail: rcl at eps.ufsc.br

  4. The electric power engineering handbook power system stability and control

    CERN Document Server

    Grisby, Leonard L

    2012-01-01

    With contributions from worldwide leaders in the field, Power System Stability and Control, Third Edition (part of the five-volume set, The Electric Power Engineering Handbook) updates coverage of recent developments and rapid technological growth in essential aspects of power systems. Edited by L.L. Grigsby, a respected and accomplished authority in power engineering, and section editors Miroslav Begovic, Prabha Kundur, and Bruce Wollenberg, this reference presents substantially new and revised content. Topics covered include: * Power System Protection * Power System Dynamics and Stability *

  5. Values in the electric power industry

    Energy Technology Data Exchange (ETDEWEB)

    Sayre, K. (ed.)

    1977-01-01

    A basic conclusion established by the seven essays presented is that nowhere within the complex decision-making process of the electric power industry is there any provision for systematically considering the curtailment of consumption as a serious alternative to continued expansion of power production. Six recommendations are summarized for concrete steps toward remedying this deficiency as a result of examining the essays. Continued expansion of power generation could result in desirable consequences of economic growth, jobs, ready transportation, and many consumer conveniences; undesirable consequences are: increasing air and water pollution, further depletion of nonrenewable resources, and increased dependence on foreign sources of energy. The papers are: A Cybernetic Analysis of Certain Energy Consumption Patterns, by Kenneth Sayre; Social and Environmental Value in Power Plant Licensing: A Study in the Regulation of Nuclear Power by Vaughn McKim; Legal and Economic Aspects of the Electric Utility's ''Mandate to Serve'', by Charles Murdock; Economies of Scale in the Electric Power Industry, by Kenneth Jameson; Dynamics of Growth in the U.S. Electric Power Industry, by Ellen Maher; Utilitarianism and Cost-Benefit Analysis: An Essay on the Relevance of Moral Philosophy to Bureaucratic Theory, by Alasdair MacIntyre; and An Ethical Analysis of Power Company Decision-Making, by Kenneth Goodpaster and Kenneth Sayre. (MCW)

  6. Electric power generation the changing dimensions

    CERN Document Server

    Tagare, D M

    2011-01-01

    "This book offers an analytical overview of established electric generation processes, along with the present status & improvements for meeting the strains of reconstruction. These old methods are hydro-electric, thermal & nuclear power production. The book covers climatic constraints; their affects and how they are shaping thermal production. The book also covers the main renewable energy sources, wind and PV cells and the hybrids arising out of these. It covers distributed generation which already has a large presence is now being joined by wind & PV energies. It covers their accommodation in the present system. It introduces energy stores for electricity; when they burst upon the scene in full strength are expected to revolutionize electricity production. In all the subjects covered, there are references to power marketing & how it is shaping production. There will also be a reference chapter on how the power market works"--Provided by publisher.

  7. Electrical Power Working Group report

    Science.gov (United States)

    Vanommering, Gerrit; Myers, Ira T.

    1986-01-01

    The status of and need for power technologies for Spacecraft 2000 were assessed and development programs required to establish an achievable and competitive technology base for spacecraft of the 21st century were identified. The results are summarized, including the recommendations and the underlying rationale.

  8. DC Power System of Electric Vehicle

    Directory of Open Access Journals (Sweden)

    Zhang Liwei

    2013-11-01

    Full Text Available In recent years, environmental and energy problem has become one of the world's hot spot problems. Today, the road cars not only consume a lot of oil resource, but also cause serious pollution to human survival environment. Therefore, to save energy and protect environment, a green environmental friendly electric car instead of fuel car will be needed for sustainable development of the society. Electric vehicle has no pollution, low noise, high efficiency, diversification, simple structure and convenient maintaining; the development of green cleaning electric vehicle is the trend, and the inevitable choice. The power supply system of electric vehicle can be divided into three parts, the battery charging system, motor drive system and dc load power supply system. This paper mainly studies the dc load power supply system. Main function is to convert the high-voltage of the battery in the electric vehicle into low voltage output, provide the power supply for the low voltage dc load, including the car safety system, windshield wiper system, audio system. On the basis of the analysis of the parameters, this article designs the converter, sets up the principle prototype, analyzes the experimental results and finally makes conclusion. The vehicle power supply is green, environment friendly, high-efficiency, digital and intelligent.    

  9. Power quality in power systems and electrical machines

    CERN Document Server

    Fuchs, Ewald

    2015-01-01

    The second edition of this must-have reference covers power quality issues in four parts, including new discussions related to renewable energy systems. The first part of the book provides background on causes, effects, standards, and measurements of power quality and harmonics. Once the basics are established the authors move on to harmonic modeling of power systems, including components and apparatus (electric machines). The final part of the book is devoted to power quality mitigation approaches and devices, and the fourth part extends the analysis to power quality solutions for renewable

  10. Electrical power integration for lunar operations

    Science.gov (United States)

    Woodcock, Gordon

    1992-01-01

    Electrical power for future lunar operations is expected to range from a few kilowatts for an early human outpost to many megawatts for industrial operations in the 21st century. All electrical power must be imported as chemical, solar, nuclear, or directed energy. The slow rotation of the Moon and consequent long lunar night impose severe mass penalties on solar systems needing night delivery from storage. The cost of power depends on the cost of the power systems the cost of its transportation to the Moon, operating cost, and, of course, the life of the power system. The economic feasibility of some proposed lunar ventures depends in part on the cost of power. This paper explores power integration issues, costs, and affordability in the context of the following representative lunar ventures: (1) early human outpost (10 kWe); (2) early permanent lunar base, including experimental ISMU activities (100 kWe); (3) lunar oxygen production serving an evolved lunar base (500 kWe); (4) lunar base production of specialized high-value products for use on Earth (5 kWe); and (5) lunar mining and production of helium-3 (500 kWe). The schema of the paper is to project likely costs of power alternatives (including integration factors) in these power ranges, to select the most economic, to determine power cost contribution to the product or activities, to estimate whether the power cost is economically acceptable, and, finally, to offer suggestions for reaching acceptability where cost problems exist.

  11. 30 CFR 77.500 - Electric power circuits and electric equipment; deenergization.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Electric power circuits and electric equipment... OF UNDERGROUND COAL MINES Electrical Equipment-General § 77.500 Electric power circuits and electric equipment; deenergization. Power circuits and electric equipment shall be deenergized before work is done...

  12. Growing the Space Station's electrical power plant

    Science.gov (United States)

    Sundberg, Gale R.

    For over a decade NASA LeRC has been defining, demonstrating, and evaluating power electronic components and multi-kilowatt, multiply redundant, electrical power systems as part of OAST charter. Whether one considers aircraft (commercial transport/military), Space Station Freedom, growth station, launch vehicles, or the new Human Exploration Initiative, the conclusions remain the same: high frequency AC power distribution and control is superior to all other approaches for achieving a fast, smart, safe, versatile, and growable electrical power system that will meet a wide range of mission options. To meet the cost and operability goals of future aerospace missions that require significantly higher electrical power and longer durations, we must learn to integrate multiple technologies in ways that enhance overall system synergisms. The way NASA is doing business in space electric power is challenged and some approaches for evolving large space vehicles and platforms in well constructed steps to provide safe, ground testable, growable, smart systems that provide simple, replicative logic structures, which enable hardware and software verification, validation, and implementation are proposed. Viewgraphs are included.

  13. Galena Electric Power A Situational Analysis

    Energy Technology Data Exchange (ETDEWEB)

    Robert E. Chaney; Stephen G. Colt; Ronald A. Johnson; Richard W. Wiles; Gregory J. White

    2008-12-31

    The purpose of the investigation is to compare the economics of various electrical power generation options for the City of Galena. Options were assessed over a 30-year project period, beginning in 2010, and the final results were compared on the basis of residential customer electric rates ($/kWh). Galena's electric utility currently generates power using internal combustion diesel engines and generator sets. Nearby, there is an exposed coal seam, which might provide fuel for a power plant. Contributions to the energy mix might come from solar, municipal solid waste, or wood. The City has also been approached by Toshiba, Inc., as a demonstration site for a small (Model 4S) nuclear reactor power plant. The Yukon River is possibly a site for in-river turbines for hydroelectric power. This report summarizes the comparative economics of various energy supply options. This report covers: (1) thermal and electric load profiles for Galena; (2) technologies and resources available to meet or exceed those loads; (3) uses for any extra power produced by these options; (4) environmental and permitting issues and then; and (5) the overall economics of each of the primary energy options.

  14. Bike-powered electricity generator

    Directory of Open Access Journals (Sweden)

    ŞTEFAN MOCANU

    2015-02-01

    Full Text Available Finding new energy sources is an important challenge of our times. A lot of research focuses on identifying such sources that can also be exploited with relatively simple and efficient systems. These sources can be either new materials that can be used to generate energy, or solutions to scavenge already existing forms of energy. Part of the latter class of solutions, the system presented in this paper converts the energy consumed by many people in gyms (or even at home, during exercise into electric energy. This energy exists anyway, because people want to be healthier or to look better. Currently, this significant (in our opinion amount of energy is actually wasted and transformed into heat. Instead, in this study, a prototype scavenging system (dedicated to fitness/stationary bikes to collect and (reuse this energy is presented. Specifically, we depict the design of a low-budget system that uses existing, discrete components and is able to scavenge some of the energy spent by the biker. The experimental results show that the system is functional, but its efficiency is limited by (mechanical losses before the collection.

  15. Electric power annual 1998. Volume 1

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-04-01

    The purpose of this report, Electric Power Annual 1998 Volume 1 (EPAVI), is to provide a comprehensive overview of the electric power industry during the most recent year for which data have been collected, with an emphasis on the major changes that occurred. In response to the changes of 1998, this report has been expanded in scope. It begins with a general review of the year and incorporates new data on nonutility capacity and generation, transmission information, futures prices from the Commodity futures Trading commission, and wholesale spot market prices from the pennsylvania-new Jersey-Maryland Independent System Operator and the California Power Exchange. Electric utility statistics at the Census division and State levels on generation, fuel consumption, stocks, delivered cost of fossil fuels, sales to ultimate customers, average revenue per kilowatthour of electricity sold, and revenues from those retail sales can be found in Appendix A. The EPAVI is intended for a wide audience, including Congress, Federal and State agencies, the electric power industry, and the general public.

  16. Green power perspectives on sustainable electricity generation

    CERN Document Server

    Neiva de Figueiredo, Joao

    2014-01-01

    Green Power: Perspectives on Sustainable Electricity Generation; João Neiva de Figueiredo and Mauro GuillénAn Overview of Electricity Generation Sources; Akhil Jariwala and Saumil JariwalaGermany's Energy Revolution; José Carlos Thomaz, Jr. and Sean MichalsonChina's Energy Profile and the Importance of Coal; Julia Zheng and Xiaoting ZhengChina's Search for Cleaner Electricity Generation Alternatives; Julia Zheng and Xiaoting ZhengRenewable Energy in Spain: A Quest for Energy Security; José Normando Bezerra, Jr.Renewable Energy in French Polynesia: From Unpredictable to Energy Independence? Dia

  17. Modelling risks for electric power markets.

    OpenAIRE

    Pantoja-Robayo, Javier

    2012-01-01

    This paper presents a study of the Forward Risk Premia (FRP) in Wholesale Electric Power Market in Colombia (WPMC) showing how the FRP varies throughout the day and how its properties are explained by risk factors. It also shows that expected forward risk premia depends on factors such as variations in expected spot prices, due to the climatic conditions generated by the Oceanic Niño Index (ONI) and its impact on the available quantity of water to generate electric power. This document provid...

  18. Engineering manual and electric powered wheelchairs.

    Science.gov (United States)

    Cooper, R A

    1999-01-01

    The sophistication required to develop and properly configure a wheelchair is illustrated by the amount and complexity of the research being conducted. At this time there appears to be between 1.5 and 2.0 million full-time wheelchair users within the United States. The reliance of the user on the wheelchair and the amount of time in the wheelchair provide significant challenges for the wheelchair design engineer. Currently there are a wide variety of wheelchair designs that are commercially available. These wheelchairs accommodate a variety of people's needs, and represent significant progress. The current trend among manufacturers of manual wheelchairs seems to be cost-reduction engineering. The ergonomics of long-term wheelchair use are critical to the advancement of wheelchair design and to the clinical selection of wheelchairs. Electric powered wheelchairs appear to be progressing faster than nearly all other types of wheelchairs. This is due to the availability of computing power with low cost microcontrollers and associated peripherals. The greater range and availability of sensors are also making changes into the design of electric powered wheelchairs. The interaction between an electric powered wheelchair and the user can be extremely complex. In many cases, individual solutions are necessary. One of the more challenging questions is determining the abilities of the user required to drive an electric powered wheelchair effectively. There have been substantial improvements in the engineering of all wheelchairs. However, there remain significant issues to be addressed.

  19. Introduction to power-frequency electric and magnetic fields.

    OpenAIRE

    1993-01-01

    This paper introduces the reader to electric and magnetic fields, particularly those fields produced by electric power systems and other sources using frequencies in the power-frequency range. Electric fields are produced by electric charges; a magnetic field also is produced if these charges are in motion. Electric fields exert forces on other charges; if in motion, these charges will experience magnetic forces. Power-frequency electric and magnetic fields induce electric currents in conduct...

  20. Coal gasification for electric power generation.

    Science.gov (United States)

    Spencer, D F; Gluckman, M J; Alpert, S B

    1982-03-26

    The electric utility industry is being severely affected by rapidly escalating gas and oil prices, restrictive environmental and licensing regulations, and an extremely tight money market. Integrated coal gasification combined cycle (IGCC) power plants have the potential to be economically competitive with present commercial coal-fired power plants while satisfying stringent emission control requirements. The current status of gasification technology is discussed and the critical importance of the 100-megawatt Cool Water IGCC demonstration program is emphasized.

  1. DISTRIBUTED ELECTRICAL POWER PRODUCTION SYSTEM AND METHOD OF CONTROL THEREOF

    DEFF Research Database (Denmark)

    2010-01-01

    The present invention relates to a distributed electrical power production system wherein two or more electrical power units comprise respective sets of power supply attributes. Each set of power supply attributes is associated with a dynamic operating state of a particular electrical power unit....

  2. Effect of Market Power in Electricity Markets

    Institute of Scientific and Technical Information of China (English)

    马歆; 侯志俭; 蒋传文; 刘涌

    2003-01-01

    The main objective of this paper is to show an overview analysis of market power issues.Market power reflects the scarcity of power supply.It is the ability of a particular seller or group of sellers to maintain prices profitably above competitive levels for a significant period of time.Because the electric power system has its own characteristics that are different to other economic systems,both physical factors and economic factors of power system are key elements on this definition.We study some cases here,including different line limit levels,load levels and bid strategy through a market model based on OPF (optimal power flow) with a decommitment algorithm.

  3. China's Electric Power Industry over 60 Years

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    The year 2009 marks the 60th anniversary of the People's Republic of China.During the 60 years when the new China continuously developed and got stronger,China's power industry supplied streams of electricity for economic development and people's life,making outstanding contributions to China's growth.

  4. China's Electric Power Industry over 60 Years

    Institute of Scientific and Technical Information of China (English)

    Staff Editors; Zhu Li

    2009-01-01

    @@ The year 2009 marks the 60th anniversary of the People's Republic of China. During the 60 years when the new China continuously developed and got stronger, China's power industry supplied streams of electricity for economic development and people's life, making outstanding contributions to China's growth.

  5. Power Processing, Part 1. Electric Machinery Analysis.

    Science.gov (United States)

    Hamilton, Howard B.

    This publication was developed as a portion of a two-semester sequence commencing at either the sixth or seventh term of the undergraduate program in electrical engineering at the University of Pittsburgh. The materials of the two courses, produced by a National Science Foundation grant, are concerned with power conversion systems comprising power…

  6. Annual Report 1999. Electric power in Sweden

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-07-01

    Barsebaeck 1 was closed on 30 November 1999. Barsebaeck's output of approximately 4 TWh per year will primarily be replaced by imports from coal-fired plants in Denmark and Germany. During the year, the closure of Swedish fossil-fired condensing power stations continued. With that, over 3,000 MW of peak-load power has been shut down during recent years. Consequently, situations entailing shortages of power can arise. On the deregulated electricity market, it is only the system operators that have a satisfactory overview of the overall electricity balance. The Swedish Power Association has thus lobbied the government as regards the need to elucidate Svenska Kraftnaet's responsibility. In a governmental decision from December, Svenska Kraftnaet was given the task of, among other things, monitoring the available capacity during peak loads and developing market instruments that can contribute to safeguarding the availability of power during peak loads. Svenska Kraftnaet has acquired gas turbines with a combined output power of 400 MW from Vattenfall. In order to cover the remaining requirement for rapid disruption reserves, Svenska Kraftnaet also has agreements with several power producers regarding a further 800 MW of gas turbine capacity. One further possibility lies in agreements with industry regarding the disconnection of consumption during times of peak loading. On 1 January 2000, the nuclear power tax was increased by SEK 0.005 per kWh to SEK 0.027 per kWh. This means that the nuclear power companies pay approximately SEK 1,800 MSEK per year in fiscal taxation on their nuclear power generation. The tax on electrical energy, paid by the consumer, was raised by SEK 0.011 to SEK 0.162 per kWh. The tax on diesel fuel was increased at the same time by SEK 0.25 per litre. In addition, a special network fee of SEK 0.002 per kWh came into existence in order to finance small-scale electricity generation, following removal of the obligation-to-receive system

  7. Flex-gear electrical power transmission

    Science.gov (United States)

    Vranish, John; Peritt, Jonathan

    1993-01-01

    This study was conducted to develop an alternative way of transferring electricity across a continuously rotating joint, with little wear and the potential for low electrical noise. The problems with wires, slip rings, electromagnetic couplings, and recently invented roll-rings are discussed. Flex-gears, an improvement of roll-rings, are described. An entire class of flexgear devices is developed. Finally, the preferred flex-gear device is optimized for maximum electrical contact and analyzed for average mechanical power loss and maximum stress. For a device diameter of six inches, the preferred device is predicted to have a total electrical contact area of 0.066 square inches. In the preferred device, a small amount of internal sliding produces a 0.003 inch-pound torque that resists the motion of the device.

  8. Development of a linear piston-type pulse power electric generator for powering electric guns

    Science.gov (United States)

    Summerfield, Martin

    1993-01-01

    The development of a linear piston-type electric pulse-power generator capable of powering electric guns and EM (rail and coil) guns and ET guns, presently under development, is discussed. The pulse-power generator consists of a cylindrical armature pushed by gases from the combustion of fuel or propellant through an externally produced magnetic field. An arrangement of electrodes and connecting straps serves to extract current from the moving armature and to send it to an external load (the electric gun).

  9. 30 CFR 75.509 - Electric power circuit and electric equipment; deenergization.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Electric power circuit and electric equipment...-General § 75.509 Electric power circuit and electric equipment; deenergization. All power circuits and electric equipment shall be deenergized before work is done on such circuits and equipment, except...

  10. Restructured electric power systems analysis of electricity markets with equilibrium models

    CERN Document Server

    2010-01-01

    Electricity market deregulation is driving the power energy production from a monopolistic structure into a competitive market environment. The development of electricity markets has necessitated the need to analyze market behavior and power. Restructured Electric Power Systems reviews the latest developments in electricity market equilibrium models and discusses the application of such models in the practical analysis and assessment of electricity markets.

  11. The physics of electric power systems

    Directory of Open Access Journals (Sweden)

    Ohler C.

    2013-06-01

    Full Text Available The article describes electric power systems from a physicist’s point of view. In contrast to common introductory textbooks on power systems, the emphasis is on the physical design, that is the material selection and the choice of the geometrical shape, of the fundamental components as it follows from the function and serves the main purpose. Why do power system components look the way they look? This is the question addressed in an accessible way. Four fundamental components are needed to make the most elementary power system: overhead transmission lines, transformers, synchronous generators, and circuit breakers. High-voltage overhead lines make efficient long-distance transmission of electric power possible. Transformers step up the power from the generating plant and cascade it down to the final consumption. For their ability to control, independently, real and reactive power, synchronous generators are the most common type of generators. And it is only through the immediate extinction of plasma arcs in circuit breakers that shortcircuit currents can be interrupted and faulty segments of the grid disconnected.

  12. Some new results of electric power science

    Institute of Scientific and Technical Information of China (English)

    AN Mei

    2011-01-01

    At present,one of the most important demands in the word is energy.And improvement of technology and management can increase energy efficiency [1].Compared with coal and oil,electricity is a kind of clean and efficient secondary energy.The development of the electric power science is essential for the human world and its new results are also remarkable.A modem power system has a very complex control structure,and is generally composed of hundreds of thousands of components.Consequently,it is very difficult and arduous to control and manage a modem power system to make it reliably and securely provide high quality yet economic power supply.The advanced energy management system (AEMS) [2-5] has been proposed and developed independently by power system researchers in China.The AEMS can coordinate all controllable resources in power grids in order to achieve multi-objective,near-optimal,and closed-loop control of power grid operation.Ref.[6] presented a dynamic equivalent method which considers motor dynamics.Firstly,the clustering criterion of motor loads was given.The motors with similar dynamic characteristics were classified into one group.

  13. Organizational Learning and Power Dynamics: A Study in a Brazilian University

    Science.gov (United States)

    Santos, Jane Lucia Silva; Steil, Andrea Valéria

    2015-01-01

    Purpose: This paper aims to describe and analyze organizational learning processes and power dynamics during the adoption and use of an information system (IS) at a Brazilian public organization. Design/methodology/approach: A case study was chosen as the research method. Data were gathered from documents and interviews with key informants.…

  14. Electrical Power Conversion of River and Tidal Power Generator

    Energy Technology Data Exchange (ETDEWEB)

    Muljadi, Eduard; Gevorgian, Vahan; Wright, Alan; Donegan, James; Marnagh, Cian; McEntee, Jarlath

    2016-11-21

    As renewable generation has become less expensive during recent decades, and it becomes more accepted by the global population, the focus on renewable generation has expanded to include new types with promising future applications, such as river and tidal generation. Although the utilization of power electronics and electric machines in industry is phenomenal, the emphasis on system design is different for various sectors of industry. In precision control, robotics, and weaponry, the design emphasis is on accuracy and reliability with less concern for the cost of the final product. In energy generation, the cost of energy is the prime concern; thus, capital expenditures (CAPEX) and operations and maintenance expenditures (OPEX) are the major design objectives. This paper describes the electrical power conversion aspects of river and tidal generation. Although modern power converter control is available to control the generation side, the design was chosen on the bases of minimizing the CAPEX and OPEX; thus, the architecture is simple and modular for ease of replacement and maintenance. The power conversion is simplified by considering a simple diode bridge and a DC-DC power converter to take advantage of abundant and low-cost photovoltaic inverters that have well-proven grid integration characteristics (i.e., the capability to produce energy with good power quality and control real power and voltage on the grid side).

  15. Annual Report 1999. Electric power in Sweden

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-07-15

    Barsebaeck 1 was closed on 30 November 1999. Barsebaeck's output of approximately 4 TWh per year will primarily be replaced by imports from coal-fired plants in Denmark and Germany. During the year, the closure of Swedish fossil-fired condensing power stations continued. With that, over 3,000 MW of peak-load power has been shut down during recent years. Consequently, situations entailing shortages of power can arise. On the deregulated electricity market, it is only the system operators that have a satisfactory overview of the overall electricity balance. The Swedish Power Association has thus lobbied the government as regards the need to elucidate Svenska Kraftnaet's responsibility. In a governmental decision from December, Svenska Kraftnaet was given the task of, among other things, monitoring the available capacity during peak loads and developing market instruments that can contribute to safeguarding the availability of power during peak loads. Svenska Kraftnaet has acquired gas turbines with a combined output power of 400 MW from Vattenfall. In order to cover the remaining requirement for rapid disruption reserves, Svenska Kraftnaet also has agreements with several power producers regarding a further 800 MW of gas turbine capacity. One further possibility lies in agreements with industry regarding the disconnection of consumption during times of peak loading. On 1 January 2000, the nuclear power tax was increased by SEK 0.005 per kWh to SEK 0.027 per kWh. This means that the nuclear power companies pay approximately SEK 1,800 MSEK per year in fiscal taxation on their nuclear power generation. The tax on electrical energy, paid by the consumer, was raised by SEK 0.011 to SEK 0.162 per kWh. The tax on diesel fuel was increased at the same time by SEK 0.25 per litre. In addition, a special network fee of SEK 0.002 per kWh came into existence in order to finance small-scale electricity generation, following removal of the obligation-to-receive system

  16. Limitation of Electrical Power in January

    CERN Multimedia

    2007-01-01

    During maintenance work on CERN's 400 kV main electrical supply in Prevessin, the laboratory will be connected to the 130 kV Suisse network in Meyrin from 4 to 22 January. Due to the on-going LHC activities during this period, the power demand will be very close to the technical limitations of this source. The effort of every one to reduce the consumption of electrical energy during this period is vital to avoid powercuts caused by exceeding the maximum capacity of the system. Mario Batz TS/CV Gerard Cumer TS/EL

  17. Limitation of Electrical Power in January

    CERN Multimedia

    2006-01-01

    During maintenance work on CERN's 400 kV main electrical supply in Prevessin, the laboratory will be connected to the 130 kV Suisse network in Meyrin from 4 to 22 January. Due to the on-going LHC activities during this period, the power demand will be very close to the technical limitations of this source. The effort of every one to reduce the consumption of electrical energy during this period is vital to avoid powercuts caused by exceeding the maximum capacity of the system. Mario Batz TS/CV Gerard Cumer TS/EL

  18. Improving Electrical Efficiency of Edm Power Supply

    Science.gov (United States)

    Toma, Emanoil; Simion, Carmen Mihaela

    2014-11-01

    This paper briefly presents the principal types of Pulse Generators for Electrical Discharge Machining and ways to improve electrical efficiency. A resonant converter with series-parallel LCC circuit, for EDM applications, was analyzed by PSpice simulation. The performances of EDM Power Supply were improved by adding an energy recovering - voltage limiter circuit. The shape of current pulse was changed by adding a supplementary MOSFET Switch in parallel with the gap. Two or more converters can be parallelized, in this way output current can be changed. A bloc-schema was conceived for EDM experimental set up

  19. Competitive strategies and models of business management in the Brazilian electric sector; Estrategias competitivas e modelos de gestao empresarial no setor eletrico brasileiro

    Energy Technology Data Exchange (ETDEWEB)

    Figueiredo, Breno Pinto

    1999-12-15

    This study draws attention to the fact that most of the discussions and studies related to the restructuring of electricity industry in Brazil, almost exclusively address the technological and institutional aspects involved in the question, when competitive strategies and management models to be followed by power companies are essential to ensure the consolidation of new design of the institutional industry in the daily operation of business. The proposition is that the evaluation of competitive strategies and management models can be a working tool for the State, in addition to offer to the electric power companies administrators an initial map or check list for planning and operation of its business, in the institutional model that is being implemented for the Brazilian electric sector.

  20. Powering China: Reforming the electric power industry in China

    Energy Technology Data Exchange (ETDEWEB)

    Yi-Chong Xu

    2002-07-01

    The book reports on the rapidly changing face of the electricity business in China. Reforms by the central government and the need for more and more electric power have pushed the electricity sector from a central planned economy to a markets-based system. The international ramifications of China's reform programme are discussed. The author describes electricity industry reform in other countries including the USA and UK. The author points out that in China after 1998 there was a move to recentralise control but by then it was too late to reverse the reforms. The problems of tariff policies, pricing, and sources of new investments, including from foreign countries, are discussed. The final section of the book deals with problems arising from the need for massive retrenchment of power-section workers, cross-subsidies, and triangular debts. The book is said to provide a sound description of the political economy of power reform in China without getting bogged down in economic modelling.

  1. Investments in the Brazilian electric sector; Os investimentos no setor eletrico brasileiro

    Energy Technology Data Exchange (ETDEWEB)

    Mello, Arthur Octavio Pinto Barreto de

    2008-05-15

    This work covers the investments in the Brazilian electric sector. Initially it describes the investments since 1879 in order to give a better understanding of the historical return obtained by investors, associated risks, investors' profile and investment's funding. Then some financial considerations related to new investments analysis are presented, emphasizing: the discounted cash flow theory, the equity return, the business risks and the characteristics of the main project accounts. Additionally, a hydroelectric case study is presented, in which the effect at the energy price of uncertainties in cost's projections, regional tax benefits, tax alternatives, and others are stressed. (author)

  2. Modelling of electrical power systems for power flow analysis

    Energy Technology Data Exchange (ETDEWEB)

    Cogo, Joao Roberto [Escola Federal de Engenharia de Itajuba, MG (Brazil)

    1994-12-31

    The industry systems in Brazil are responsible for a consumption of over 50% (fifty per cent) of the total electrical power generated: therefore, they are import loads in power flow studies, and their modeling should be as much the best. Usually, in power flow studies, the industry systems are modeled by taking the influence of the power (active and reactive) and of the current on the voltage into account. Since the inducting motors, within the industry systems, represent at least 50% (fifty per cent) of the power consumption, and a large part of them is oversize, it is proposed to represent the industry systems as a function of the characteristic of power on shaft versus voltage into account. Since the induction motors, within the industry systems, represent at least 50% (fifty per cent) of the power consumption, and a large part of them is oversized, it is proposed to represent the industry systems as a function of the characteristics of power on shaft versus voltage for the analysis of power systems, aiming a load flow study. Thereafter, a model of an equivalent motor which has a basis the typical performance curve of an induction motor is present. This model is obtained from empirical parameters, surveyed from a population of over 1000 motors. (author) 3 refs., 1 fig., 4 tabs.

  3. Annual Report 1999. Electric power in Sweden

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-07-15

    Barsebaeck 1 was closed on 30 November 1999. Barsebaeck's output of approximately 4 TWh per year will primarily be replaced by imports from coal-fired plants in Denmark and Germany. During the year, the closure of Swedish fossil-fired condensing power stations continued. With that, over 3,000 MW of peak-load power has been shut down during recent years. Consequently, situations entailing shortages of power can arise. On the deregulated electricity market, it is only the system operators that have a satisfactory overview of the overall electricity balance. The Swedish Power Association has thus lobbied the government as regards the need to elucidate Svenska Kraftnaet's responsibility. In a governmental decision from December, Svenska Kraftnaet was given the task of, among other things, monitoring the available capacity during peak loads and developing market instruments that can contribute to safeguarding the availability of power during peak loads. Svenska Kraftnaet has acquired gas turbines with a combined output power of 400 MW from Vattenfall. In order to cover the remaining requirement for rapid disruption reserves, Svenska Kraftnaet also has agreements with several power producers regarding a further 800 MW of gas turbine capacity. One further possibility lies in agreements with industry regarding the disconnection of consumption during times of peak loading. On 1 January 2000, the nuclear power tax was increased by SEK 0.005 per kWh to SEK 0.027 per kWh. This means that the nuclear power companies pay approximately SEK 1,800 MSEK per year in fiscal taxation on their nuclear power generation. The tax on electrical energy, paid by the consumer, was raised by SEK 0.011 to SEK 0.162 per kWh. The tax on diesel fuel was increased at the same time by SEK 0.25 per litre. In addition, a special network fee of SEK 0.002 per kWh came into existence in order to finance small-scale electricity generation, following removal of the obligation-to-receive system

  4. Annual Report 1999. Electric power in Sweden

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-07-01

    Barsebaeck 1 was closed on 30 November 1999. Barsebaeck's output of approximately 4 TWh per year will primarily be replaced by imports from coal-fired plants in Denmark and Germany. During the year, the closure of Swedish fossil-fired condensing power stations continued. With that, over 3,000 MW of peak-load power has been shut down during recent years. Consequently, situations entailing shortages of power can arise. On the deregulated electricity market, it is only the system operators that have a satisfactory overview of the overall electricity balance. The Swedish Power Association has thus lobbied the government as regards the need to elucidate Svenska Kraftnaet's responsibility. In a governmental decision from December, Svenska Kraftnaet was given the task of, among other things, monitoring the available capacity during peak loads and developing market instruments that can contribute to safeguarding the availability of power during peak loads. Svenska Kraftnaet has acquired gas turbines with a combined output power of 400 MW from Vattenfall. In order to cover the remaining requirement for rapid disruption reserves, Svenska Kraftnaet also has agreements with several power producers regarding a further 800 MW of gas turbine capacity. One further possibility lies in agreements with industry regarding the disconnection of consumption during times of peak loading. On 1 January 2000, the nuclear power tax was increased by SEK 0.005 per kWh to SEK 0.027 per kWh. This means that the nuclear power companies pay approximately SEK 1,800 MSEK per year in fiscal taxation on their nuclear power generation. The tax on electrical energy, paid by the consumer, was raised by SEK 0.011 to SEK 0.162 per kWh. The tax on diesel fuel was increased at the same time by SEK 0.25 per litre. In addition, a special network fee of SEK 0.002 per kWh came into existence in order to finance small-scale electricity generation, following removal of the obligation-to-receive system

  5. The importance of reservoir regularization in the Brazilian electric system; A importancia dos reservatorios de regularizacao no sistema eletrico brasileiro

    Energy Technology Data Exchange (ETDEWEB)

    Souza, Ronaldo Antonio de; Pereira Junior, Amaro Olimpio; Livino, Angela; Moretz-Shon-David, Pedro Americo [Empresa de Pesquisa Energetica (EPE), Rio de Janeiro, RJ (Brazil)], emails: ronaldo.souza@epe.gov.br, amaro.pereira@epe.gov.br, angela.livino@epe.gov.br, pedro.david@epe.gov.br

    2010-07-01

    This paper presents a quantification of benefits due to reservoirs for the Brazilian power system in terms of system regularization and also in terms of greenhouse gas emission reduction because of the avoided thermal generation. The results have shown losses in firm energy for the power system, requiring other sources for power generation, which represent negatives impacts in terms of greenhouse gas emissions. (author)

  6. Electric Power From Ambient Energy Sources

    Energy Technology Data Exchange (ETDEWEB)

    DeSteese, John G.; Hammerstrom, Donald J.; Schienbein, Lawrence A.

    2000-10-03

    This report summarizes research on opportunities to produce electric power from ambient sources as an alternative to using portable battery packs or hydrocarbon-fueled systems in remote areas. The work was an activity in the Advanced Concepts Project conducted by Pacific Northwest National Laboratory (PNNL) for the Office of Research and Development in the U.S. Department of Energy Office of Nonproliferation and National Security.

  7. Electric power plant emissions and public health

    Energy Technology Data Exchange (ETDEWEB)

    O' Connor, A.B.; Roy, C. [Faculty of Maine Dartmouth Family Medical Residency, Fairfield, ME (United States)

    2008-02-15

    The generation of electric power is one important source of pollutants such as mercury, sulfur dioxide, nitrogen oxides, and fine particulate matter that can affect the respiratory, cardiovascular, and central nervous systems and cause pregnancy complications. But protecting people from environmental health hazards has become increasingly complex. Air pollutants are often invisible and travel many miles virtually undetected. Nurses can play a critical role in preventive strategies, as well as in the national debate on energy production and dependence on fossil fuels.

  8. Renewable and efficient electric power systems

    CERN Document Server

    Masters, Gilbert M

    2013-01-01

    A solid, quantitative, practical introduction to a wide range of renewable energy systems-in a completely updated, new edition The second edition of Renewable and Efficient Electric Power Systems provides a solid, quantitative, practical introduction to a wide range of renewable energy systems. For each topic, essential theoretical background is introduced, practical engineering considerations associated with designing systems and predicting their performance are provided, and methods for evaluating the economics of these systems are presented. While the book focuses on

  9. TWRS privatization phase 1 electrical power system

    Energy Technology Data Exchange (ETDEWEB)

    Singh, G.

    1997-05-30

    This document includes Conceptual Design Report (CDR) for a new 11 km (7 miles) 230 kV transmission line and a new 40 MVA substation (A6) which will be located east of Grout Facility in 200E Area tank farm. This substation will provide electrical power up to 20 MW each for two private contractor facilities for immobilization and disposal of low activity waste (LAW).

  10. Solar thermal electric power information user study

    Energy Technology Data Exchange (ETDEWEB)

    Belew, W.W.; Wood, B.L.; Marle, T.L.; Reinhardt, C.L.

    1981-02-01

    The results of a series of telephone interviews with groups of users of information on solar thermal electric power are described. These results, part of a larger study on many different solar technologies, identify types of information each group needed and the best ways to get information to each group. The report is 1 of 10 discussing study results. The overall study provides baseline data about information needs in the solar community. An earlier study identified the information user groups in the solar community and the priority (to accelerate solar energy commercialization) of getting information to each group. In the current study only high-priority groups were examined. Results from five solar thermal electric power groups of respondents are analyzed: DOE-Funded Researchers, Non-DOE-Funded Researchers, Representatives of Utilities, Electric Power Engineers, and Educators. The data will be used as input to the determination of information products and services the Solar Energy Research Institute, the Solar Energy Information Data Bank Network, and the entire information outreach community should be preparing and disseminating.

  11. 78 FR 4873 - Electrical Protective Equipment Standard and the Electric Power Generation, Transmission, and...

    Science.gov (United States)

    2013-01-23

    ... on Electrical Protective Equipment (29 CFR 1910.137) and Electric Power Generation, Transmission, and... Equipment Standard (29 CFR 1910.137) and the Electric Power Generation, Transmission, and Distribution... the equipment-testing requirements of the Standard. Electric Power Generation, Transmission,...

  12. Diagnosing Faults in Electrical Power Systems of Spacecraft and Aircraft

    Data.gov (United States)

    National Aeronautics and Space Administration — Electrical power systems play a critical role in spacecraft and aircraft, and they exhibit a rich variety of failure modes. This paper discusses electrical power...

  13. 78 FR 29159 - Electric Power Research Institute; Seismic Evaluation Guidance

    Science.gov (United States)

    2013-05-17

    ... From the Federal Register Online via the Government Publishing Office NUCLEAR REGULATORY COMMISSION Electric Power Research Institute; Seismic Evaluation Guidance AGENCY: Nuclear Regulatory... issuing an endorsement letter of Electric Power Research Institute (EPRI) Report, ``Seismic...

  14. Advanced LVDC Electrical Power Architectures and Microgrids

    DEFF Research Database (Denmark)

    Dragicevic, Tomislav; Vasquez, Juan Carlos; Guerrero, Josep M.

    2014-01-01

    the high set goals for share of renewable energy sources (RESs) in satisfying total demand. RESs operate either natively at DC or have a DC link in the heart of their power electronic interface, whereas the end point connection of electronic loads, batteries and fuel cells is exclusively DC. Therefore......Current trends indicate that worldwide electricity distribution networks are experiencing a transformation towards direct-current (DC) at both generation and consumption level. This tendency is powered by the outburst of various electronic loads and, at the same time, with the struggle to meet......, merging these devices into dedicated DC distribution architectures through corresponding DC-DC converters arises as an attractive option not only in terms of enhancing efficiency due to reduction of conversion steps, but also for having power quality independence from the utility mains. These kinds...

  15. Optimization and Control of Electric Power Systems

    Energy Technology Data Exchange (ETDEWEB)

    Lesieutre, Bernard C. [Univ. of Wisconsin, Madison, WI (United States); Molzahn, Daniel K. [Univ. of Wisconsin, Madison, WI (United States)

    2014-10-17

    The analysis and optimization needs for planning and operation of the electric power system are challenging due to the scale and the form of model representations. The connected network spans the continent and the mathematical models are inherently nonlinear. Traditionally, computational limits have necessitated the use of very simplified models for grid analysis, and this has resulted in either less secure operation, or less efficient operation, or both. The research conducted in this project advances techniques for power system optimization problems that will enhance reliable and efficient operation. The results of this work appear in numerous publications and address different application problems include optimal power flow (OPF), unit commitment, demand response, reliability margins, planning, transmission expansion, as well as general tools and algorithms.

  16. Automatic Detection of Electric Power Troubles (ADEPT)

    Science.gov (United States)

    Wang, Caroline; Zeanah, Hugh; Anderson, Audie; Patrick, Clint; Brady, Mike; Ford, Donnie

    1988-01-01

    Automatic Detection of Electric Power Troubles (A DEPT) is an expert system that integrates knowledge from three different suppliers to offer an advanced fault-detection system. It is designed for two modes of operation: real time fault isolation and simulated modeling. Real time fault isolation of components is accomplished on a power system breadboard through the Fault Isolation Expert System (FIES II) interface with a rule system developed in-house. Faults are quickly detected and displayed and the rules and chain of reasoning optionally provided on a laser printer. This system consists of a simulated space station power module using direct-current power supplies for solar arrays on three power buses. For tests of the system's ablilty to locate faults inserted via switches, loads are configured by an INTEL microcomputer and the Symbolics artificial intelligence development system. As these loads are resistive in nature, Ohm's Law is used as the basis for rules by which faults are located. The three-bus system can correct faults automatically where there is a surplus of power available on any of the three buses. Techniques developed and used can be applied readily to other control systems requiring rapid intelligent decisions. Simulated modeling, used for theoretical studies, is implemented using a modified version of Kennedy Space Center's KATE (Knowledge-Based Automatic Test Equipment), FIES II windowing, and an ADEPT knowledge base.

  17. Socio-environmental policy of Brazilian electric sector: effects of the environmental legislation; Politica socio-ambiental do setor eletrico brasileiro: efeitos da legislacao ambiental

    Energy Technology Data Exchange (ETDEWEB)

    Amaral, A.C.; Menezes, C.F.S. [Departamento Nacional de Producao Mineral (DNPM), Rio de Janeiro, RJ (Brazil). Projeto RADAMBRASIL

    1993-12-31

    This work discusses the socio-environmental policy of Brazilian electric sector. Implications of environmental legal aspects on the electric sector are also discussed. The main problems concerning the implementation of the socio-environment policy are presented 3 refs.

  18. Robust distribution and use of electric power

    Science.gov (United States)

    Catalan Izquierdo, Saturnino

    2001-07-01

    One of the major problems related to the simultaneous operation of electrical converters in a wide open power system is the concordance between the characteristics of the feeder itself and the load. Nowadays we usually call Electric Power Quality or Electromagnetic Compatibility to this Concordance Degree. Currently, the most important non concordance are voltage sag (voltage dip) and short time interruptions, that is: decreasings in voltage RMS value lasting from some tenths of a second to several seconds. Current analysis usually study this problem from the feeder side, by means of morphological or stadistical approaches, or from the load side in order to evaluate immunity, emission or specific solutions. This line of research, undoubtly needed provided we need to know the current state of the power system and to increase the concordance degree, is not enough because of the huge variability between power lines and from one instant to another. Moreover, the legal boundaries that can support business decisions are not developed yet. The proposed new theory is widely contrasted by field and laboratory measurement. Detailed analysis include instant voltage, instant current, power system and load effects from many places inside the power system of Spain. This theory is a novel approach to the determination of Concordance Degree (CG) of a whole system (be it a distribution line or a single machine) and to the corrective steps needed to increase it. In addition, the proposed model allow a quantitative evaluation of corrective actions like the increase of energy system storage (in a mechanical to electrical convertible form) or/and the increase of the supplied reactive power. Profitability of corrective actions is mainly a function of the number of voltage dips (sags) and short time interruptions that happen in a given period of time. To reduce this number we have studied and developed new fault characterization and location algorithms designed specifically for medium

  19. PROVIDING QUALITY OF ELECTRIC POWER IN ELECTRIC POWER SYSTEM IN PARALLEL OPERATION WITH WIND TURBINE

    Directory of Open Access Journals (Sweden)

    Yu. A. Rolik

    2016-01-01

    Full Text Available The problem of providing electric power quality in the electric power systems (EPS that are equipped with sufficiently long air or cable transmission lines is under consideration. This problem proved to be of particular relevance to the EPS in which a source of electrical energy is the generator of wind turbines since the wind itself is an instable primary energy source. Determination of the degree of automation of voltage regulation in the EPS is reduced to the choice of methods and means of regulation of power quality parameters. The concept of a voltage loss and the causes of the latter are explained by the simplest power system that is presented by a single-line diagram. It is suggested to regulate voltage by means of changing parameters of the network with the use of the method of reducing loss of line voltage by reducing its reactance. The latter is achieved by longitudinal capacitive compensation of the inductive reactance of the line. The effect is illustrated by vector diagrams of currents and voltages in the equivalent circuits of transmission lines with and without the use of longitudinal capacitive compensation. The analysis of adduced formulas demonstrated that the use of this method of regulation is useful only in the systems of power supply with a relatively low power factor (cosφ < 0.7 to 0.9. This power factor is typical for the situation of inclusion the wind turbine with asynchronous generator in the network since the speed of wind is instable. The voltage regulation fulfilled with the aid of the proposed method will make it possible to provide the required quality of the consumers’ busbars voltage in this situation. In is turn, it will make possible to create the necessary conditions for the economical transmission of electric power with the lowest outlay of reactive power and the lowest outlay of active power losses.

  20. HTS in electric power applications, transformers

    Science.gov (United States)

    Hornfeldt, Sven P.

    With the discovery of the high temperature superconductors the prospect to find widespread applications of these conductors also in electric power applications grew very fast. The advantages that could be anticipated was reduced losses, reduced weight and volume plus less environmental impact. During the last five-six years techniques have been developed to produce long lengths of flexible conductors that can be used in cables or windings. Most manufacturers of high temperature superconductors concentrated on traditional DC applications. However, much larger markets will open up when good enough AC conductors become available for power applications. In 1994 ABB started a project aiming at a 630 kVA three-phase power transformer with windings made of high temperature superconductors. This transformer was taken into operation in the spring of 1997 and operated perfectly for one year. I will discuss the performance and price demands the high temperature superconductors have to fulfill to be useful in power applications and review the above mentioned transformer project and also give some insight in a running project with the goal to design, build and put in operation a 10 MVA power transformer with high temperature superconductors with low AC-losses in the windings.

  1. Transient phenomena in electrical power systems

    CERN Document Server

    Venikov, V A; Higinbotham, W

    1964-01-01

    Electronics and Instrumentation, Volume 24: Transient Phenomena in Electrical Power Systems presents the methods for calculating the stability and the transient behavior of systems with forced excitation control. This book provides information pertinent to the analysis of transient phenomena in electro-mechanical systems.Organized into five chapters, this volume begins with an overview of the principal requirements in an excitation system. This text then explains the electromagnetic and electro-mechanical phenomena, taking into account the mutual action between the components of the system. Ot

  2. Review of Aircraft Electric Power Systems and Architectures

    DEFF Research Database (Denmark)

    Zhao, Xin; Guerrero, Josep M.; Wu, Xiaohao

    2014-01-01

    In recent years, the electrical power capacity is increasing rapidly in more electric aircraft (MEA), since the conventional mechanical, hydraulic and pneumatic energy systems are partly replaced by electrical power system. As a consequence, capacity and complexity of aircraft electric power...... systems (EPS) will increase dramatically and more advanced aircraft EPSs need to be developed. This paper gives a brief description of the constant frequency (CF) EPS, variable frequency (VF) EPS and advanced high voltage (HV) EPS. Power electronics in the three EPS is overviewed. Keywords: Aircraft Power...... System, More Electric Aircraft, Constant Frequency, Variable Frequency, High Voltage....

  3. 77 FR 65419 - Virginia Electric and Power Company

    Science.gov (United States)

    2012-10-26

    ... and Power Company AGENCY: Nuclear Regulatory Commission. ACTION: Partial Director's Decision; issuance... Power Station, Units 1 and 2 (North Anna 1 and 2), by the Virginia Electric and Power Company (VEPCO or... August 23, 2011, Virginia Electric and Power Company (the licensee) should be required to obtain...

  4. Electric power system basics for the nonelectrical professional

    CERN Document Server

    Blume, Steven W

    2016-01-01

    The second edition of Steven W. Blume’s bestseller provides a comprehensive treatment of power technology for the non-electrical engineer working in the electric power industry. This book aims to give non-electrical professionals a fundamental understanding of large interconnected electrical power systems, better known as the “Power Grid”, with regard to terminology, electrical concepts, design considerations, construction practices, industry standards, control room operations for both normal and emergency conditions, maintenance, consumption, telecommunications and safety. The text begins with an overview of the terminology and basic electrical concepts commonly used in the industry then it examines the generation, transmission and distribution of power. Other topics discussed include energy management, conservation of electrical energy, consumption characteristics and regulatory aspects to help readers understand modern electric power systems.

  5. Thermal Management of Power Electronics and Electric Motors for Electric-Drive Vehicles (Presentation)

    Energy Technology Data Exchange (ETDEWEB)

    Narumanchi, S.

    2014-09-01

    This presentation is an overview of the power electronics and electric motor thermal management and reliability activities at NREL. The focus is on activities funded by the Department of Energy Vehicle Technologies Office Advanced Power Electronics and Electric Motors Program.

  6. Electric power processing, distribution, management and energy storage

    Science.gov (United States)

    Giudici, R. J.

    1980-01-01

    Power distribution subsystems are required for three elements of the SPS program: (1) orbiting satellite, (2) ground rectenna, and (3) Electric Orbiting Transfer Vehicle (EOTV). Power distribution subsystems receive electrical power from the energy conversion subsystem and provide the power busses rotary power transfer devices, switchgear, power processing, energy storage, and power management required to deliver control, high voltage plasma interactions, electric thruster interactions, and spacecraft charging of the SPS and the EOTV are also included as part of the power distribution subsystem design.

  7. Consumers free of electric power. A practical vision; Consumidores livres de energia eletrica. Uma visao pratica

    Energy Technology Data Exchange (ETDEWEB)

    Florezi, Guilherme

    2009-07-01

    In the new environment of the Brazilian electric power sector, since the changes in the institutional model beginning in 1993, electrical sector agents entered into a highly competitive market, particularly in the case of the consumers which have had the possibility to choose their supplier of electricity in accordance with rules and restrictions that have been modified over the years. The consumer that fits this profile, was named free consumer whom in accordance with the rules and restrictions dictated by the National Electric Energy Agency (ANEEL), will have the option of electrical energy delivery through other companies, instead of the company that holds granting of the area where the consumer in question is physically located. The other costumers, that could not be qualified as free, remain captive, unable to choose for their supply from outside the area where the original grant is located. The studies presented here are an important starting point for research on free energy consumers and their behavior in order to provide subsidies to the readers to get a better understanding of the history of the Brazilian energy sector and the free market, with emphasis on free consumers, to thereby enable their potential bases for a possible study of migration to the free market . (author)

  8. REACTIVE POWER DEVICES IN SYSTEMS OF ELECTRIC TRACTION

    Directory of Open Access Journals (Sweden)

    M. O. Kostin

    2010-04-01

    Full Text Available A comparative characteristic of different concepts and expressions for determination of reactive power in the circuits with non-sinusoidal electric values has been given. For the first Ukrainian electric locomotives of DE1 type with the system of DC electric traction, the values of reactive power after Budeany, Fryze, and also the differential, integral and generalized reactive powers have been determined. Some measures on reducing its consumption by the DC electric rolling stock have been suggested.

  9. Steam-Electric Power-Plant-Cooling Handbook

    Energy Technology Data Exchange (ETDEWEB)

    Sonnichsen, J.C.; Carlson, H.A.; Charles, P.D.; Jacobson, L.D.; Tadlock, L.A.

    1982-02-01

    The Steam-Electric Power Plant Cooling Handbook provides summary data on steam-electric power plant capacity, generation and number of plants for each cooling means, by Electric Regions, Water Resource Regions and National Electric Reliability Council Areas. Water consumption by once-through cooling, cooling ponds and wet evaporative towers is discussed and a methodology for computation of water consumption is provided for a typical steam-electric plant which uses a wet evaporative tower or cooling pond for cooling.

  10. Technique applied in electrical power distribution for Satellite Launch Vehicle

    Directory of Open Access Journals (Sweden)

    João Maurício Rosário

    2010-09-01

    Full Text Available The Satellite Launch Vehicle electrical network, which is currently being developed in Brazil, is sub-divided for analysis in the following parts: Service Electrical Network, Controlling Electrical Network, Safety Electrical Network and Telemetry Electrical Network. During the pre-launching and launching phases, these electrical networks are associated electrically and mechanically to the structure of the vehicle. In order to succeed in the integration of these electrical networks it is necessary to employ techniques of electrical power distribution, which are proper to Launch Vehicle systems. This work presents the most important techniques to be considered in the characterization of the electrical power supply applied to Launch Vehicle systems. Such techniques are primarily designed to allow the electrical networks, when submitted to the single-phase fault to ground, to be able of keeping the power supply to the loads.

  11. Electric Power Plants and Generation Stations - POWER_HAZUS_IN: Electric Power Facilities in Indiana, Derived from HAZUS (Federal Emergency Management Agency, Point Shapefile)

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — POWER_HAZUS_IN is a point shapefile that shows locations of electric power facilities in Indiana. POWER_HAZUS_IN was derived from the shapefile named "ELECTRIC." A...

  12. Superconducting Materials, Magnets and Electric Power Applications

    Science.gov (United States)

    Crabtree, George

    2011-03-01

    The surprising discovery of superconductivity a century ago launched a chain of convention-shattering innovations and discoveries in superconducting materials and applications that continues to this day. The range of large-scale applications grows with new materials discoveries - low temperature NbTi and Nb3 Sn for liquid helium cooled superconducting magnets, intermediate temperature MgB2 for inexpensive cryocooled applications including MRI magnets, and high temperature YBCO and BSSCO for high current applications cooled with inexpensive liquid nitrogen. Applications based on YBCO address critical emerging challenges for the electricity grid, including high capacity superconducting cables to distribute power in urban areas; transmission of renewable electricity over long distances from source to load; high capacity DC interconnections among the three US grids; fast, self-healing fault current limiters to increase reliability; low-weight, high capacity generators enabling off-shore wind turbines; and superconducting magnetic energy storage for smoothing the variability of renewable sources. In addition to these grid applications, coated conductors based on YBCO deposited on strong Hastelloy substrates enable a new generation of all superconducting high field magnets capable of producing fields above 30 T, approximately 50% higher than the existing all superconducting limit based on Nb3 Sn . The high fields, low power cost and the quiet electromagnetic and mechanical operation of such magnets could change the character of high field basic research on materials, enable a new generation of high-energy colliding beam experiments and extend the reach of high density superconducting magnetic energy storage.

  13. Electrical power systems for distributed generation

    Energy Technology Data Exchange (ETDEWEB)

    Robertson, T.A.; Huval, S.J. [Stewart & Stevenson Services, Inc., Houston, TX (United States)

    1996-12-31

    {open_quotes}Distributed Generation{close_quotes} has become the {open_quotes}buzz{close_quotes} word of an electric utility industry facing deregulation. Many industrial facilities utilize equipment in distributed installations to serve the needs of a thermal host through the capture of exhaust energy in a heat recovery steam generator. The electrical power generated is then sold as a {open_quotes}side benefit{close_quotes} to the cost-effective supply of high quality thermal energy. Distributed generation is desirable for many different reasons, each with unique characteristics of the product. Many years of experience in the distributed generation market has helped Stewart & Stevenson to define a range of product features that are crucial to most any application. The following paper will highlight a few of these applications. The paper will also examine the range of products currently available and in development. Finally, we will survey the additional services offered by Stewart & Stevenson to meet the needs of a rapidly changing power generation industry.

  14. Energy efficiency and restructuring of the Brazilian power sector

    Energy Technology Data Exchange (ETDEWEB)

    De Martino Jannuzzi, Gilberto [State University of Campinas, Sao Paulo, (Brazil)

    1999-07-01

    Since the early nineties Brazil has initiated a program of reforms in its electric sector which includes utility privatization, de-verticalization. The main objectives were to promote a market-oriented energy industry attractive to private investments. This has led to the loss of sponsorship for the public-interest programs formerly undertaken by the state utilities. In particular, of significant concern are the programs for promotion of energy efficiency, renewable energy technologies, rural electrification and environmental protection. In the midst of the privatization effort, the National Agency for Electrical Energy ANEEL was created (end of 1997). One of the tasks of the regulatory agency is to provide funds and incentives to energy conservation. In this paper we review the role of ANEEL in promoting energy efficiency investments in the context of a market-oriented sector, its limitations and prospects. [Spanish] Desde principios de los anos noventa Brasil ha iniciado un programa de reformas en su sector electrico que incluye la privatizacion del servicio electrico y la desverticalizacion. Los objetivos principales eran promover una industria de la energia orientada comercialmente de la energia electrica, atractiva a las inversiones privadas. Esto ha conducido a la perdida de patrocinio de los programas de interes publico emprendidos antes por las empresas electricas del estado. En particular, de preocupacion significativa estan los programas para la promocion del rendimiento energetico, de las tecnologias de la energia renovable, de la Electrificacion rural y de la proteccion del medio ambiente. En medio del esfuerzo de la privatizacion, la agencia nacional para la energia electrica ANEEL fue creada (finales de 1997). Una de las tareas de la agencia reguladora es proporcionar fondos e incentivos a la conservacion de energia. En este trabajo repasamos el papel de ANEEL en promover inversiones del rendimiento energetico en el contexto de un sector orientado

  15. The impact of wind power on electricity prices

    Energy Technology Data Exchange (ETDEWEB)

    Brancucci Martinez-Anido, Carlo; Brinkman, Greg; Hodge, Bri-Mathias

    2016-08-01

    This paper investigates the impact of wind power on electricity prices using a production cost model of the Independent System Operator - New England power system. Different scenarios in terms of wind penetration, wind forecasts, and wind curtailment are modeled in order to analyze the impact of wind power on electricity prices for different wind penetration levels and for different levels of wind power visibility and controllability. The analysis concludes that electricity price volatility increases even as electricity prices decrease with increasing wind penetration levels. The impact of wind power on price volatility is larger in the shorter term (5-min compared to hour-to-hour). The results presented show that over-forecasting wind power increases electricity prices while under-forecasting wind power reduces them. The modeling results also show that controlling wind power by allowing curtailment increases electricity prices, and for higher wind penetrations it also reduces their volatility.

  16. Social networks and power in the Brazilian State: learning from urban policies

    Directory of Open Access Journals (Sweden)

    Eduardo Marques

    2007-01-01

    Full Text Available This article presents results of two researches on urban policies in different Brazilian metropolises using network analysis. Policy network studies have explored the consequences of networks over policies, but have underestimated the consequences of the structure of the network itself. The institutional and personal networks that structure state organizations internally and insert them in broader political scenarios organize a mid-level structure I call State fabric. This introduces more stability and predictability than usually considered and gives access to a specific power resource, which I call positional power, associated with the positions political actors occupy in the State fabric, influencing politics inside and around the State.

  17. Green Demonstrated Analysis on Structure of Our Electric Power Resource

    Institute of Scientific and Technical Information of China (English)

    YANG Jun-bao; YU Jing; CHEN Jin-jing

    2004-01-01

    According to green view and history data, the demonstrated method is applied to analyze the green rationality on the present structure of thermal, hydraulic and nuclear electric power resource; the green trend of large-scale on thermal power generating unit in our history; the distribution of between water and coal resource with the space structure of electric power installed capacity, and recommending the premise, dominance and direction of building our green electric power structure in the future.

  18. Resources transfer and centralization in Brazilian electrical sector: the reversion global reserve (RGR) and the guarantee global reserve (GGR); Centralizacao e transferencia de recursos no setor eletrico brasileiro: a reserva global de reversao (RGR) e a reserva global de garantia (RGG)

    Energy Technology Data Exchange (ETDEWEB)

    Souza Amaral Filho, J.B. de

    1991-12-31

    This dissertation makes the analysis of resources transfer and centralization in Brazilian electrical sector, through reversion global reserve (RGR) and guarantee global reserve (GGR). RGR and GGR are funds. RGR finances sectorial investments in electric power and GGR aims the supply of deficient concessionaires. Governmental investments and the results of this application are showing. (M.V.M.). 55 refs, 2 figs, 61 tabs.

  19. Economic market design and planning for electric power systems

    CERN Document Server

    Mili, Lamine

    2010-01-01

    Discover cutting-edge developments in electric power systems. Stemming from cutting-edge research and education activities in the field of electric power systems, this book brings together the knowledge of a panel of experts in economics, the social sciences, and electric power systems. In ten concise and comprehensible chapters, the book provides unprecedented coverage of the operation, control, planning, and design of electric power systems. It also discusses:. A framework for interdisciplinary research and education;. Modeling electricity markets;. Alternative economic criteria and proactiv.

  20. New model of Brazilian electric sector: implications of sugarcane bagasse on the distributed generation process

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, Celso E.L. de; Rabi, Jose A. [Universidade de Sao Paulo (GREEN/FZEA/USP), Pirassununga, SP (Brazil). Fac. de Zootecnia e Engenharia de Alimentos. Grupo de Pesquisa em Reciclagem, Eficiencia Energetica e Simulacao Numerica], Emails: celsooli@usp.br, jrabi@usp.br; Halmeman, Maria Cristina [Universidade Estadual Paulista (FCA/UNESP), Botucatu, SP (Brazil). Fac. de Ciencias Agronomicas

    2008-07-01

    Distributed generation has become an alternative for the lack of resources to large energy projects and for recent facts that have changed the geopolitical panorama. The later have increased oil prices so that unconventional sources have become more and more feasible, which is an issue usually discussed in Europe and in USA. Brazil has followed such world trend by restructuring the electrical sector as well as major related institutions, from generation to commercialization and sector regulation while local legislation has enabled the increase of distributed generation. It regulates the role of the independent energy producer so as to provide direct business between the later and a great consumer, which is an essential step to enlarge energy market. Sugarcane bagasse has been used to produce both electric energy and steam and this paper analyzes and discusses the major implications of a new model for Brazilian electric sector based on sugarcane bagasse use as means to increase distributed generation process, particularly concerned with the commercialization of energy excess. (author)

  1. 10 CFR 434.401 - Electrical power and lighting systems.

    Science.gov (United States)

    2010-01-01

    ... provisions for check metering of electrical consumption. The electrical power feeders for which provision for... percent or less of the loads on a feeder may be from another usage or category. 401.1.2Tenant-shared HVAC... shall be capable of reducing electrical power consumption for lighting (continuously or in steps) to...

  2. Solar powered Stirling cycle electrical generator

    Science.gov (United States)

    Shaltens, Richard K.

    1991-01-01

    Under NASA's Civil Space Technology Initiative (CSTI), the NASA Lewis Research Center is developing the technology needed for free-piston Stirling engines as a candidate power source for space systems in the late 1990's and into the next century. Space power requirements include high efficiency, very long life, high reliability, and low vibration. Furthermore, system weight and operating temperature are important. The free-piston Stirling engine has the potential for a highly reliable engine with long life because it has only a few moving parts, non-contacting gas bearings, and can be hermetically sealed. These attributes of the free-piston Stirling engine also make it a viable candidate for terrestrial applications. In cooperation with the Department of Energy, system designs are currently being completed that feature the free-piston Stirling engine for terrestrial applications. Industry teams were assembled and are currently completing designs for two Advanced Stirling Conversion Systems utilizing technology being developed under the NASA CSTI Program. These systems, when coupled with a parabolic mirror to collect the solar energy, are capable of producing about 25 kW of electricity to a utility grid. Industry has identified a niche market for dish Stirling systems for worldwide remote power application. They believe that these niche markets may play a major role in the introduction of Stirling products into the commercial market.

  3. Rotary-Atomizer Electric Power Generator

    Science.gov (United States)

    Nguyen, Trieu; Tran, Tuan; de Boer, Hans; van den Berg, Albert; Eijkel, Jan C. T.

    2015-03-01

    We report experimental and theoretical results on a ballistic energy-conversion method based on a rotary atomizer working with a droplet acceleration-deceleration cycle. In a rotary atomizer, liquid is fed onto the center of a rotating flat surface, where it spreads out under the action of the centrifugal force and creates "atomized" droplets at its edge. The advantage of using a rotary atomizer is that the centrifugal force exerted on the fluid on a smooth, large surface is not only a robust form of acceleration, as it avoids clogging, but also easily allows high throughput, and produces high electrical power. We successfully demonstrate an output power of 4.9 mW and a high voltage up to 3120 V. At present, the efficiency of the system is still low (0.14%). However, the conversion mechanism of the system is fully interpreted in this paper, permitting a conceptual understanding of system operation and providing a roadmap for system optimization. This observation will open up a road for building power-generation systems in the near future.

  4. Recent Advances in Nuclear Powered Electric Propulsion for Space Exploration

    Science.gov (United States)

    Cassady, R. Joseph; Frisbee, Robert H.; Gilland, James H.; Houts, Michael G.; LaPointe, Michael R.; Maresse-Reading, Colleen M.; Oleson, Steven R.; Polk, James E.; Russell, Derrek; Sengupta, Anita

    2007-01-01

    Nuclear and radioisotope powered electric thrusters are being developed as primary in-space propulsion systems for potential future robotic and piloted space missions. Possible applications for high power nuclear electric propulsion include orbit raising and maneuvering of large space platforms, lunar and Mars cargo transport, asteroid rendezvous and sample return, and robotic and piloted planetary missions, while lower power radioisotope electric propulsion could significantly enhance or enable some future robotic deep space science missions. This paper provides an overview of recent U.S. high power electric thruster research programs, describing the operating principles, challenges, and status of each technology. Mission analysis is presented that compares the benefits and performance of each thruster type for high priority NASA missions. The status of space nuclear power systems for high power electric propulsion is presented. The paper concludes with a discussion of power and thruster development strategies for future radioisotope electric propulsion systems,

  5. Electric power monthly, June 1997 with data for March 1997

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-06-01

    The Electric Power Monthly (EPM) presents monthly electricity statistics for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. 63 tabs.

  6. Electric power monthly, July 1997 with data for April 1997

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-07-01

    The Electric Power Monthly (EPM) presents monthly electricity statistics for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. 57 tabs.

  7. Spacecraft Electrical Power System (EPS) generic analysis tools and techniques

    Science.gov (United States)

    Morris, Gladys M.; Sheppard, Mark A.

    1992-01-01

    An overview is provided of the analysis tools and techiques used in modeling the Space Station Freedom electrical power system, as well as future space vehicle power systems. The analysis capabilities of the Electrical Power System (EPS) are described and the EPS analysis tools are surveyed.

  8. 77 FR 26321 - Virginia Electric and Power Company

    Science.gov (United States)

    2012-05-03

    ... Power Company AGENCY: Nuclear Regulatory Commission. ACTION: Director's Decision; issuance. SUMMARY: The... Electric and Power Company (VEPCO or the licensee). The petition requested that the NRC: (1) Take escalated... be formally communicated to Virginia Electric and Power Company (VEPCO) in a written...

  9. The sustainable expansion of the brazilian electric sector from the use of sustainability indicators as support instruments to decision; A expansao sustentavel do setor eletrico brasileiro a partir do uso de indicadores de sustentabilidade como instrumento de apoio a decisao

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, Luciano B. [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Coordenacao dos Programas de Pos-graduacao de Engenharia (COPPE). Inst. Virtual Internacional de Mudancas Globais (IVIG)]. E-mail: luciano@ivig.coppe.ufrj.br; Soares, Jeferson B. [Empresa de Pesquisa Energetica (EPE), Brasilia, DF (Brazil). Superintendencia de Recursos Energeticos]. E-mail: jeferson.soares@epe.gov.br; Rovere, Emilio L. La [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Coordenacao dos Programas de Pos-graduacao de Engenharia (COPPE). Lab. Interdisciplinar de Meio Ambiente (LIMA)]. E-mail: emilio@ppe.ufrj.br

    2006-07-01

    This article presents a proposal of an integrated evaluation methodology of offer electric energy expansion, considering not only technological and economical aspects but the environmental and social aspects as well. The proposal is based on the establishment of an indicators set for electricity generation from: small hydroelectric power plants, sugar cane bagasse, biodiesel, eolic wind, urban solid residues and natural gas. From those indicators a multicriteria analysis is applied to a case study, allowing to learn simultaneously the influence of environmental and social questions on the decision making of the brazilian electric sector expansion.

  10. Operation of Modern Distribution Power Systems in Competitive Electricity Markets

    DEFF Research Database (Denmark)

    Hu, Weihao

    In this dissertation, the characteristics of a distribution system under a dynamic electricity-pricing, load management system and under a large number of power electronic interfaced distributed generation units are investigated. The operation characteristics of a power system with wind turbines......, DG units, loads and electricity price are studied. Further, the effect of energy storage systems will be considered, and an optimal operation strategy for energy storage devices in a large scale wind power system in the electricity market is proposed. The western Danish power system, which has large...... penetrations of variable wind power production and may represent the future electricity markets in some ways, is chosen as the studied power system. 10 year actual data from the Danish competitive electricity market are collected and analyzed. The relationship among the electricity price, the consumption...

  11. Challenges for implementation of bioenergy in the Brazilian energy matrix and biomass gasification process for the production of electrical power; Desafios da bioenergia para sua implementacao na matriz energetica brasileira e o processo de gaseificacao da biomassa para a producao de energia eletrica

    Energy Technology Data Exchange (ETDEWEB)

    Figueiroa, E.O.; Moutinho-Junior, D.A.A.; Silva, J.D. [Universidade de Pernambuco (UPE), Recife, PE (Brazil)

    2010-07-01

    The gasification is the conversion of any solid or liquid fuel in fuel gas through the process of the partial oxidation at a high temperature. The gasification process of course occurs in four distinct physicochemical stages with different temperatures of reaction, as drying of the biomass, pyrolysis, reduction and combustion. The reorganization of the Brazilian electric sector foresees technological innovations in the system of electric generation for the country. The process of gasification integrated in a combined cycle (cycle of Brayton and cycle of Rankine) characterizes an innovative technology. It is with noting that this technology is still in improvement, it shows an excellent perspective of commercial viability and efficiency significantly higher than conventional technology. This work presents a study of the gases generated in the zone of combustion and its behavior in the zone of 'freeboard' of a gasifier of fluidized stream bed. For this study, we made the use of one hybrid technique (half-analytical) that is the transformed one of Fourier. (author)

  12. High Temperature Power Converters for Military Hybrid Electric Vehicles

    Science.gov (United States)

    2011-08-09

    M) MINI-SYMPOSIUM AUGUST 9-11 DEARBORN, MICHIGAN HIGH TEMPERATURE POWER CONVERTERS FOR MILITARY HYBRID ELECTRIC VEHICLES ABSTRACT...SUBTITLE High Temperature Power Converters for Military Hybrid Electric Vehicles 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 6...public release High Temperature Power Converters for Military Hybrid Electric Vehicles Page 2 of 8 I. INTRODUCTION Today, wide bandgap devices

  13. Reserve valuation in electric power systems

    Science.gov (United States)

    Ruiz, Pablo Ariel

    Operational reliability is provided in part by scheduling capacity in excess of the load forecast. This reserve capacity balances the uncertain power demand with the supply in real time and provides for equipment outages. Traditionally, reserve scheduling has been ensured by enforcing reserve requirements in the operations planning. An alternate approach is to employ a stochastic formulation, which allows the explicit modeling of the sources of uncertainty. This thesis compares stochastic and reserve methods and evaluates the benefits of a combined approach for the efficient management of uncertainty in the unit commitment problem. Numerical studies show that the unit commitment solutions obtained for the combined approach are robust and superior with respect to the traditional approach. These robust solutions are especially valuable in areas with a high proportion of wind power, as their built-in flexibility allows the dispatch of practically all the available wind power while minimizing the costs of operation. The scheduled reserve has an economic value since it reduces the outage costs. In several electricity markets, reserve demand functions have been implemented to take into account the value of reserve in the market clearing process. These often take the form of a step-down function at the reserve requirement level, and as such they may not appropriately represent the reserve value. The value of reserve is impacted by the reliability, dynamic and stochastic characteristics of system components, the system operation policies, and the economic aspects such as the risk preferences of the demand. In this thesis, these aspects are taken into account to approximate the reserve value and construct reserve demand functions. Illustrative examples show that the demand functions constructed have similarities with those implemented in some markets.

  14. Economic impact of electric power on investment, employment and productivity

    Energy Technology Data Exchange (ETDEWEB)

    Mueller, W.

    1987-04-01

    Large-scale, wide-range electric power uses in every-day life and industrial production processes took their start about a century ago. Until recently, high consumption growth rates developing even without specific marketing manipulations have shown the social value of electric power. While the historical use, namely the satisfaction of autonomous social needs, seems to belong to the past meanwhile, new electric power perspectives have been created by the requirements of pollution abatement and supply security which again challenge the satisfaction of autonomous social needs. Any anti-electric power policy would therefore be equivalent to an antisocial policy.

  15. 33 CFR 127.107 - Electrical power systems.

    Science.gov (United States)

    2010-07-01

    ...) WATERFRONT FACILITIES WATERFRONT FACILITIES HANDLING LIQUEFIED NATURAL GAS AND LIQUEFIED HAZARDOUS GAS Waterfront Facilities Handling Liquefied Natural Gas § 127.107 Electrical power systems. (a) The...

  16. Impact of energy efficiency and alternative sources in the Brazilian electric matrix: scenarios 2005-2050; Impacto da eficiencia energetica e das fontes alternativas na matriz eletrica brasileira: cenarios 2005-2050

    Energy Technology Data Exchange (ETDEWEB)

    Saidel, Marco A.; Gimenes, Andre L.V.; Fujii, Ricardo J. [Universidade de Sao Paulo (GEPEA/USP), SP (Brazil). Dept. de Energia e Automacao Eletricas. Grupo de Energia; Furtado, Marcelo [Greenpeace Brasil, Rio de Janeiro, RJ (Brazil)

    2008-07-01

    Part of a worldwide initiative championed by Greenpeace International and EREC - European Renewable Energy Council, a partnership between Greenpeace Brazil and GEPEA/USP were established for producing two national alternative energy scenarios, as a blueprint for how to meet forthcoming Brazilian energy needs in a sustainable way. Such scenarios, one reflecting the views of GEPEA/USP and another the perceptions by Greenpeace, were both based on a reference scenario strongly drawing from the 'Plano Decenal 2006-2015' and the 'Plano Nacional de Energia 2030', both by the Ministry of Mines and Energy. From the alternative scenarios one may see that is feasible to satisfy the increasing Brazilian demand through the integrated deployment of alternative resources, Natural Gas fueled thermal power plants and energy conservation measures. To develop the Brazilian electricity energy base in such terms, however, is mandatory to conduct further debate on energy planning issues, conservation measures and alternatives resources concerns included. (author)

  17. Intelligent Vehicle Electrical Power Supply System with Central Coordinated Protection

    Institute of Scientific and Technical Information of China (English)

    YANG Diange; KONG Weiwei; LI Bing; LIAN Xiaomin

    2016-01-01

    The current research of vehicle electrical power supply system mainly focuses on electric vehicles (EV) and hybrid electric vehicles (HEV). The vehicle electrical power supply system used in traditional fuel vehicles is rather simple and imperfect;electrical/electronic devices (EEDs) applied in vehicles are usually directly connected with the vehicle’s battery. With increasing numbers of EEDs being applied in traditional fuel vehicles, vehicle electrical power supply systems should be optimized and improved so that they can work more safely and more effectively. In this paper, a new vehicle electrical power supply system for traditional fuel vehicles, which accounts for all electrical/electronic devices and complex work conditions, is proposed based on a smart electrical/electronic device (SEED) system. Working as an independent intelligent electrical power supply network, the proposed system is isolated from the electrical control module and communication network, and access to the vehicle system is made through a bus interface. This results in a clean controller power supply with no electromagnetic interference. A new practical battery state of charge (SoC) estimation method is also proposed to achieve more accurate SoC estimation for lead-acid batteries in traditional fuel vehicles so that the intelligent power system can monitor the status of the battery for an over-current state in each power channel. Optimized protection methods are also used to ensure power supply safety. Experiments and tests on a traditional fuel vehicle are performed, and the results reveal that the battery SoC is calculated quickly and sufficiently accurately for battery over-discharge protection. Over-current protection is achieved, and the entire vehicle’s power utilization is optimized. For traditional fuel vehicles, the proposed vehicle electrical power supply system is comprehensive and has a unified system architecture, enhancing system reliability and security.

  18. Intelligent vehicle electrical power supply system with central coordinated protection

    Science.gov (United States)

    Yang, Diange; Kong, Weiwei; Li, Bing; Lian, Xiaomin

    2016-07-01

    The current research of vehicle electrical power supply system mainly focuses on electric vehicles (EV) and hybrid electric vehicles (HEV). The vehicle electrical power supply system used in traditional fuel vehicles is rather simple and imperfect; electrical/electronic devices (EEDs) applied in vehicles are usually directly connected with the vehicle's battery. With increasing numbers of EEDs being applied in traditional fuel vehicles, vehicle electrical power supply systems should be optimized and improved so that they can work more safely and more effectively. In this paper, a new vehicle electrical power supply system for traditional fuel vehicles, which accounts for all electrical/electronic devices and complex work conditions, is proposed based on a smart electrical/electronic device (SEED) system. Working as an independent intelligent electrical power supply network, the proposed system is isolated from the electrical control module and communication network, and access to the vehicle system is made through a bus interface. This results in a clean controller power supply with no electromagnetic interference. A new practical battery state of charge (SoC) estimation method is also proposed to achieve more accurate SoC estimation for lead-acid batteries in traditional fuel vehicles so that the intelligent power system can monitor the status of the battery for an over-current state in each power channel. Optimized protection methods are also used to ensure power supply safety. Experiments and tests on a traditional fuel vehicle are performed, and the results reveal that the battery SoC is calculated quickly and sufficiently accurately for battery over-discharge protection. Over-current protection is achieved, and the entire vehicle's power utilization is optimized. For traditional fuel vehicles, the proposed vehicle electrical power supply system is comprehensive and has a unified system architecture, enhancing system reliability and security.

  19. Monitoring and analyzing features of electrical power quality system performance

    Directory of Open Access Journals (Sweden)

    Genci Sharko

    2010-06-01

    Full Text Available Power quality is a set of boundaries that allows electrical systems to function in their intended manner without significant loss of performance or life. The term is used to describe electric power that drives an electrical load and the load's ability to function properly with that electric power. Without the proper quality of the power, an electrical device may malfunction, fail prematurely or not operate at all. There are many reasons why the electric power can be of poor quality and many more causes of such poor quality power. Power quality of power systems, which affects all connected electrical and electronic equipment, is a measure of deviations in voltages, currents, frequency, temperatures, winding forces and torques of particular supply systems and their components. In recent years, a considerable increase in nonlinear loads has been experienced; in particular distributed loads, such as computers, monitors and lighting, and distributed sources. The aim of this paper is to display a way of monitoring and analyzing features of electrical power quality system. As a monitoring example is taken output from power transformer rated at 320 kVA, part of distribution grid of Durres City in Albania.

  20. Potential of exchange of electric power between the electric systems of Brazil and Argentina; Potencial de intercambio de energia eletrica entre os sistemas eletricos do Brasil e da Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Zanette, Andre Luiz [Petroleo Brasileiro S.A. (PETROBRAS), Rio de Janeiro, RJ (Brazil)

    2010-07-01

    Integration of power generation and transmission systems can provide a better utilization of energy resources and increase systems reliability. Given that Brazilian interconnection with Argentina, which represents the major Brazilian interconnection with neighboring countries, is used basically in winter months or in situations of unfavorable hydrology, this paper aims to demonstrate that power exchange between these two countries can be much higher than currently observed, resulting in greater benefits for producers and consumers of electricity in both countries, and that these benefits can also be obtained through better use of existing and planned interconnections between South American countries. To estimate the potential for power exchange between the electrical systems of Brazil and Argentina, three sets of simulations using the Brazilian Energy Plan (PDE 2010-2019) deck for Newave model, available from EPE, were made. These simulations consider the possibility that: (i) electricity is exported from Brazil to Argentina (II) electricity is imported from Argentina and (III) electricity is exchanged in both directions. The simulation results indicate that, despite rising operational marginal costs, significant amounts of electricity can be exported to Argentina at relatively low prices, depending on hydrological conditions. Moreover, the possibility of electricity imports from Argentina can reduce the operational costs of Brazilian system, as well as minimizing the risk of shortages. This work shows that the interconnections between Brazil and Argentina may be better used to benefit producers and consumers in both countries. Therefore, it is necessary to define an effective contractual and operational model for power trading and electricity transfer between these countries with the objective of promoting stability and mutual trust. Finally, studies to evaluate the potential for electricity exchange between South American countries are specially important

  1. Electric power annual 1994. Volume 2, Operational and financial data

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-11-28

    This year, the annual is published in two volumes. Volume I focused on US electric utilities and contained final 1994 data on net generation, fossil fuel consumption, stocks, receipts, and cost. This Volume II presents annual 1994 summary statistics for the electric power industry, including information on both electric utilities and nonutility power producers. Included are preliminary data for electric utility retail sales of electricity, associated revenue, and average revenue per kilowatthour of electricity sold (based on form EIA-861) and for electric utility financial statistics, environmental statistics, power transactions, and demand- side management. Final 1994 data for US nonutility power producers on installed capacity and gross generation, as well as supply and disposition information, are also provided in Volume II. Technical notes and a glossary are included.

  2. Configurations of power relations in the Brazilian emergency care system: analyzing a context of visible practices.

    Science.gov (United States)

    Velloso, Isabela; Ceci, Christine; Alves, Marilia

    2013-09-01

    In this paper, we make explicit the changing configurations of power relations that currently characterize the Brazilian Emergency Care System (SAMU) team in Belo Horizonte, Brazil. The SAMU is a recent innovation in Brazilian healthcare service delivery. A qualitative case study methodology was used to explore SAMU's current organizational arrangements, specifically the power relations that have developed and that demonstrate internal team struggles over space and defense of particular occupational interests. The argument advanced in this paper is that these professionals are developing their work in conditions of exposure, that is, they are always being observed by someone, and that such observational exposure provides the conditions whereby everyday emergency care practices are enacted such that practice is shaped by, as well as shapes, particular, yet recognizable power relationships. Data were collected through the observation of the SAMU's work processes and through semi-structured interviews. Research materials were analyzed using discourse analysis. In the emergency care process of work, visibility is actually embedded in the disciplinary context and can thus be analyzed as a technique applied to produce disciplined individuals through the simple mechanisms elaborated by Foucault such as hierarchical surveillance, normalizing judgment, and the examination.

  3. Multiagent based protection and control in decentralized electric power systems

    DEFF Research Database (Denmark)

    Saleem, Arshad; Lind, Morten; Veloso, Manuela

    2010-01-01

    Electric power systems are going through a major change both in their physical and control structure. A large num- ber of small and geographically dispersed power generation units (e.g., wind turbines, solar cells, plug-in electric cars) are replacing big centralized power plants. This shift has...... created interesting possibilities for application of intelligent systems such as multiagent systems for control and automation in electric power systems. This paper describes work on designing a multiagent system for protection and control of electric power distribution networks.It demonstrates how...... explicit modeling of capabilities, states, roles and role transition in agents can capture the control and automation in electric power systems. We present illustrative results from using our proposed schema in realistic simulations....

  4. Incorporating the Variability of Wind Power with Electric Heat Pumps

    Directory of Open Access Journals (Sweden)

    Hongyu Long

    2011-10-01

    Full Text Available With the mass introduction of wind power in Northern China, wind power variability has appeared. In this article, both existing electric heat pumps (EHPs and coal-fired combined heat and power (CHP facilities, which are generally equipped with extraction-condensing steam turbines coupled with district heating for space heating purposes, are proposed to incorporate the variability of wind power equivalently. The authors’ proposal arises from the facts that: (1 EHPs can provide space heating in the domestic sector with little thermal comfort change (e.g., energy carriers for space heating purposes can be switched from heating water to electricity; (2 coal-fired CHP units in Northern China can usually generate more electrical power corresponding to a shaved thermal power production. Thus, it is suggested that heating water from CHP units be shaved when the wind generation is low due to the variability of wind power, so as to enable more electrical power production and compensate for the corresponding insufficient wind generation. Following this, in the future and for some space heating loads at appropriate distances, electricity used as energy carrier should be converted by electric heat pumps for space heating. Thus, more electricity consumption will be achieved so as to avoid wasting wind power when the wind generation it is high. A numerical simulation is performed in order to illustrate the authors’ proposal. It is shown that the impact of variability of wind generation can be equivalently reduced to a great extent, which enable more wind power integration instead of curtailment and potential energy conservation. Moreover, in contrast to before, both the thermal and electrical power of coal-fired CHP units are no longer constants. In addition, the ratio of electrical to thermal power of CHP units is no longer constant either, and results in less energy consumption compared with fixed ratio. Finally, electricity consumed by end users’ EHPs

  5. Fundamentals of electric power engineering engineering from electromagnetics to power systems

    CERN Document Server

    Ceraolo, Massimo

    2014-01-01

    At the basis of many sectors of engineering, electrical engineering deals with electricity phenomena involved in the transfer of energy and power. Professionals requiring a refresher course in this interdisciplinary branch need look no further than Fundamentals of Electric Power Engineering, which imparts tools and trade tricks to remembering basic concepts and grasping new developments. Even established engineers must supplement their careers with an invigorated knowledge base, and this comprehensive resource helps non-electrical engineers amass power system information quickly.

  6. EVALUATING DEGREE OF ACTIVE POWER LOSSES REDUCTION IN THE ELECTRIC POWER LINES WITH REACTIVE POWER COMPENSATION

    Directory of Open Access Journals (Sweden)

    V. N. Radkevich

    2016-01-01

    Full Text Available The paper considers evaluation procedure for the degree of active power losses reduction in the power transmission lines under 1 kV and 6–10 kV of the systems of electric power supply of industrial enterprises with compensating installations mounted at the side of the customer. The capacitor installations conform to the applied voltage level and factor in dielectric losses in the capacitors. The voltage at the compensating device terminal changes from 0.95 to 1.05 of the capacitors nominal voltage. The study did not account for reactive power losses in the line, nor did it for its charge capacity, conditioned by relative shortness of the cable lines generally operating in the mains of industrial enterprises. For this reason, the quantities of reactive power being consumed and generated by the transmission line are negligible and do not significantly affect the reactive power flux. The researchers obtain functional relations that allow estimating the degree of power loss reduction in the transmission line factoring in its explicit initial data. They perform mathematical analysis of the obtained functional relations and study the function by means of derivatives. The function extremum points are found as well as the intervals of its increment and decrement. A graphical research of the obtained functional relation is performed. It is ascertained that reduction of the active power losses is contingent on the line and the capacitor-installation engineering factors, the electrical energy consumer reactive load value as well as the voltage applied to the capacitor installation. The functional relations presented in the article can be employed in scoping calculation necessary for decision making on the reactive power compensation in systems of the industrial facilities electric power supply. Their account will allow a more accurate estimate of technical and economic effect of the capacitor bank installation in the electrical mains under 1 kV and 6

  7. Specifying Processes: Application to Electrical Power Distribution

    Directory of Open Access Journals (Sweden)

    Sabah Al-Fedaghi

    2011-01-01

    Full Text Available Problem statement: This study deals with the problem of how to specify processes. Many process specification methodologies have been determined to be incomplete; for example, ISO 9000:2005 defines process as transforming media inputs into outputs. Nevertheless, the author of the Quality Systems Handbook, declares that such a definition is incomplete because processes create results and not necessarily by transforming inputs. Still, it is not clear what description of process can embed transformation of input to output or include creation that leads to results. Approach: This problem is important because process specification is an essential component in building projects utilized in such tasks as scheduling, planning, production, management, work flow and reengineering. Results: We solve the problem by “opening” the black box in the input-transformation-output model. This action uncovers many possible sources and destinations related to input and output, such as the disappearance, storage and copying of input. It is possible to reject input and also to block output from leaving the process. The approach is based on a conceptual framework for process specification of all generic phases that make up any process and embraces input, transformation, creation and output. The study applies the method in the field of electrical power distribution systems. Conclusion: We conclude that the results demonstrate a viable specification method that can be adopted for different types of processes.

  8. Electric power management for the International Space Station experiment racks

    Energy Technology Data Exchange (ETDEWEB)

    Burcham, M. [Boeing Missile and Space, Huntsville, AL (United States); Darty, M.A.; Thibodeau, P.E. [McDonnell Douglas Aerospace, Huntsville, AL (United States); Coe, R. [SCI Systems, Inc., Huntsville, AL (United States); Dunn, M. [Europa Ltd., Glenrothes (United Kingdom)

    1995-12-31

    An intelligent, all solid state, electric power management system for International Space Station experiment racks is described. This power system is implemented via redundant internal microcomputers, controlling hybridized solid state power controllers in response to 1553B data bus commands. The solid state power controllers are programmable for current trip level and for normally-open or normally-closed operation.

  9. Advanced Power Electronics and Electric Motors Annual Report -- 2013

    Energy Technology Data Exchange (ETDEWEB)

    Narumanchi, S. [National Renewable Energy Lab. (NREL), Golden, CO (United States); Bennion, K. [National Renewable Energy Lab. (NREL), Golden, CO (United States); DeVoto, D. [National Renewable Energy Lab. (NREL), Golden, CO (United States); Moreno, G. [National Renewable Energy Lab. (NREL), Golden, CO (United States); Rugh, J. [National Renewable Energy Lab. (NREL), Golden, CO (United States); Waye, S. [National Renewable Energy Lab. (NREL), Golden, CO (United States)

    2015-01-01

    This report describes the research into advanced liquid cooling, integrated power module cooling, high temperature air cooled power electronics, two-phase cooling for power electronics, and electric motor thermal management by NREL's Power Electronics group in FY13.

  10. HEMP emergency planning and operating procedures for electric power systems

    Energy Technology Data Exchange (ETDEWEB)

    Reddoch, T.W.; Markel, L.C. (Electrotek Concepts, Inc., Knoxville, TN (United States))

    1991-01-01

    Investigations of the impact of high-altitude electromagnetic pulse (HEMP) on electric power systems and electrical equipment have revealed that HEMP creates both misoperation and failures. These events result from both the early time E[sub 1] (steep-front pulse) component and the late time E[sub 3] (geomagnetic perturbations) component of HEMP. In this report a HEMP event is viewed in terms of its marginal impact over classical power system disturbances by considering the unique properties and consequences of HEMP. This report focuses on system-wide electrical component failures and their potential consequences from HEMP. In particular, the effectiveness of planning and operating procedures for electric systems is evaluated while under the influence of HEMP. This assessment relies on published data and characterizes utilities using the North American Electric Reliability Council's regions and guidelines to model electric power system planning and operations. Key issues addressed by the report include how electric power systems are affected by HEMP and what actions electric utilities can initiate to reduce the consequences of HEMP. The report also reviews the salient features of earlier HEMP studies and projects, examines technology trends in the electric power industry which are affected by HEMP, characterizes the vulnerability of power systems to HEMP, and explores the capability of electric systems to recover from a HEMP event.

  11. Electricity: From Tabletop to Power Plant

    Science.gov (United States)

    Moran, Timothy

    2009-01-01

    While electricity is central to our daily lives, it remains "black box" technology to most students. They know that electricity is produced somewhere and that it costs money, but they do not have personal experience with the operation and scale of the machines that provide it. Fortunately, electricity generation can be added to the more basic…

  12. Evaluation of Electric Power Procurement Strategies by Stochastic Dynamic Programming

    Science.gov (United States)

    Saisho, Yuichi; Hayashi, Taketo; Fujii, Yasumasa; Yamaji, Kenji

    In deregulated electricity markets, the role of a distribution company is to purchase electricity from the wholesale electricity market at randomly fluctuating prices and to provide it to its customers at a given fixed price. Therefore the company has to take risk stemming from the uncertainties of electricity prices and/or demand fluctuation instead of the customers. The way to avoid the risk is to make a bilateral contact with generating companies or install its own power generation facility. This entails the necessity to develop a certain method to make an optimal strategy for electric power procurement. In such a circumstance, this research has the purpose for proposing a mathematical method based on stochastic dynamic programming and additionally considering the characteristics of the start-up cost of electric power generation facility to evaluate strategies of combination of the bilateral contract and power auto-generation with its own facility for procuring electric power in deregulated electricity market. In the beginning we proposed two approaches to solve the stochastic dynamic programming, and they are a Monte Carlo simulation method and a finite difference method to derive the solution of a partial differential equation of the total procurement cost of electric power. Finally we discussed the influences of the price uncertainty on optimal strategies of power procurement.

  13. Electrical Model of Balanced AC HTS Power Cable

    NARCIS (Netherlands)

    Zuijderduin, R.; Chevtchenko, O.; Smit, J.J.; Willen, D.; Melnik, I.; Geschiere, A.

    2012-01-01

    The future electricity grid will be more sustainable and it will have more power transmission and distribution capability with more electrical power added from decentralized sources on distribution level and from wind parks and other large sources on transmission level. More interconnections and mor

  14. Challenges of electric power industry restructuring for fuel suppliers

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-09-01

    The purpose of this report is to provide an assessment of the changes in other energy industries that could occur as the result of restructuring in the electric power industry. This report is prepared for a wide audience, including Congress, Federal and State agencies, the electric power industry, and the general public. 28 figs., 25 tabs.

  15. 21 CFR 868.5710 - Electrically powered oxygen tent.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Electrically powered oxygen tent. 868.5710 Section... tent. (a) Identification. An electrically powered oxygen tent is a device that encloses a patient's... temperature and humidity of the breathing gases. This generic type device includes the pediatric aerosol...

  16. Electric Power Supply Chain Management Addressing Climate Change

    DEFF Research Database (Denmark)

    Wang, Xiao-Hui; Cong, Ronggang

    2012-01-01

    change. The study compared the difference between electric power supply chain management and traditional supply chain management. Furthermore, some possible research topics are addressed. The aim of this paper was to promote the application of supply chain management in the China electricity sector......Supply chain management played a critical role in the electric power industrial chain optimization. The purpose of this paper was to review a sample of the literature relating to supply chain management and its possible applications in electricity power system, especially in the context of climate...... optimizations and brought a change in the related government policy options....

  17. Dynamics of risk management tools and auctions in the second phase of the Brazilian Electricity Market reform

    Energy Technology Data Exchange (ETDEWEB)

    Cavaliere de Souza, Fabio, E-mail: cavaliere@cepel.b [CEPEL, Electric Power Research Center, ELETROBRAS System, Rio de Janeiro, RJ (Brazil); Legey, Luiz Fernando Loureiro [Alberto Luiz Coimbra Institute for Research and Graduate Studies, Energy Planning Program, Federal University of Rio de Janeiro, 21945-970 Rio de Janeiro, RJ (Brazil)

    2010-04-15

    In 2004, the reform of the Brazilian Electricity Market underwent a thorough revision. One of its causes was the electricity rationing that began in June 2001 and lasted until February 2002. Among other measures, the 2004 revision devised new mechanisms intended to reduce risks associated to contracts settled in electricity auctions and those related to investments in new generation plants. As 4 years have passed since the onset of the reform's revision, sufficiently enough data are now available for an analysis of the post-revision dynamics of the Brazilian Electricity Market. This is the purpose of the present paper. We focus on the dynamics of the different types of electricity auctions and on the so-called Mechanism for Compensation of Surpluses and Deficits, both created in the wake of the 2004 revision. The ultimate goal is to understand the behavior of the agents involved in auctions - notably buyers and sellers of electricity - and propose remedial actions to eliminate existing loopholes in the present regulatory framework. To achieve this goal, four steps were necessary. Firstly, a data base to support the analysis was built. Then, the main drivers of the dynamics of the risk management tools were identified. Finally, consequences of the implemented changes were discussed and corrections for observed pitfalls proposed.

  18. Dynamics of risk management tools and auctions in the second phase of the Brazilian Electricity Market reform

    Energy Technology Data Exchange (ETDEWEB)

    De Souza, Fabio Cavaliere [CEPEL, Electric Power Research Center, ELETROBRAS System, Rio de Janeiro, RJ (Brazil); Legey, Luiz Fernando Loureiro [Alberto Luiz Coimbra Institute for Research and Graduate Studies, Energy Planning Program, Federal University of Rio de Janeiro, 21945-970 Rio de Janeiro, RJ (Brazil)

    2010-04-15

    In 2004, the reform of the Brazilian Electricity Market underwent a thorough revision. One of its causes was the electricity rationing that began in June 2001 and lasted until February 2002. Among other measures, the 2004 revision devised new mechanisms intended to reduce risks associated to contracts settled in electricity auctions and those related to investments in new generation plants. As 4 years have passed since the onset of the reform's revision, sufficiently enough data are now available for an analysis of the post-revision dynamics of the Brazilian Electricity Market. This is the purpose of the present paper. We focus on the dynamics of the different types of electricity auctions and on the so-called Mechanism for Compensation of Surpluses and Deficits, both created in the wake of the 2004 revision. The ultimate goal is to understand the behavior of the agents involved in auctions - notably buyers and sellers of electricity - and propose remedial actions to eliminate existing loopholes in the present regulatory framework. To achieve this goal, four steps were necessary. Firstly, a data base to support the analysis was built. Then, the main drivers of the dynamics of the risk management tools were identified. Finally, consequences of the implemented changes were discussed and corrections for observed pitfalls proposed. (author)

  19. Operation of Modern Distribution Power Systems in Competitive Electricity Markets

    DEFF Research Database (Denmark)

    Hu, Weihao

    strategy for trading wind power in the Danish short-term electricity market in order to minimize the imbalance costs for regulation. A load optimization method based on spot price for demand side management in Denmark is proposed in order to save the energy costs for 3 types of typical Danish consumers......In this dissertation, the characteristics of a distribution system under a dynamic electricity-pricing, load management system and under a large number of power electronic interfaced distributed generation units are investigated. The operation characteristics of a power system with wind turbines...... penetrations of variable wind power production and may represent the future electricity markets in some ways, is chosen as the studied power system. 10 year actual data from the Danish competitive electricity market are collected and analyzed. The relationship among the electricity price, the consumption...

  20. Electric Power Load Analysis (EPLA) for Surface Ships

    Science.gov (United States)

    2012-09-17

    ESM can be based on a host of technologies to include batteries, flywheels , and ultra-capacitors. Energy storage can be provided for use in a...electrical generation, energy storage , and power conversion components and equipment and current requirements for electrical distribution equipment and...Demand factor 4 3.7 Demand power 4 3.8 Electric and propulsion plant concept of operations 4 3.9 Emergency ship control 4 3.10 Energy storage

  1. Probabilistic evaluation of the Brazilian interconnected power systems; Avaliacao probabilistica do desempenho do sistema interligado brasileiro

    Energy Technology Data Exchange (ETDEWEB)

    Melo, A.C.G.; Mello, J.C.O.; Romero, S.P.; Oliveira, G.C. [Centro de Pesquisas de Energia Eletrica (CEPEL), Rio de Janeiro, RJ (Brazil); Fontoura Filho, R.N. [ELETROBRAS, Rio de Janeiro, RJ (Brazil)

    1994-12-31

    This paper describes the main features of the NH{sub 2} model, developed for the probabilistic evaluation of the adequacy of large scale power systems. The system analysis is carried out through a full set of indicators, including reliability indices and probability distributions of selected variables, such as area interchanges, power flow in circuits, voltage in buses etc. These indicators are calculated in two stages: before and after the introduction of remedial actions. Also, the model yields the representation of system hourly load curve, with uncertainty around the load levels. The flexibility and performance of the NH2 model are illustrated in case studies with a 1400-bus, configuration of the Brazilian system. (author) 12 refs., 11 figs., 6 tabs.

  2. Power converters and AC electrical drives with linear neural networks

    CERN Document Server

    Cirrincione, Maurizio

    2012-01-01

    The first book of its kind, Power Converters and AC Electrical Drives with Linear Neural Networks systematically explores the application of neural networks in the field of power electronics, with particular emphasis on the sensorless control of AC drives. It presents the classical theory based on space-vectors in identification, discusses control of electrical drives and power converters, and examines improvements that can be attained when using linear neural networks. The book integrates power electronics and electrical drives with artificial neural networks (ANN). Organized into four parts,

  3. FEATURES OF CALCULATION OF THE NONCONTACT ELECTRIC POWER GENERATORS

    Directory of Open Access Journals (Sweden)

    Kvitko A. V.

    2015-10-01

    Full Text Available The article shows that to improve the performance of autonomous systems we need new methods and principles of their design, associated with both the use of renewable sources and the application of new technical solutions of electromechanical generators and static stabilizers and inverters electric power settings. We have disclosed modern requirements for generators of electric power, as well as features of calculating the parameters of contactless electrical power generators: asynchronous generators capacitive excitation and asynchronous generators with permanent magnets. The article presents some analytical expressions for calculating the electrical losses and the efficiency of the generators, specific weight and power. It is shown, that expedient to designing contactless electrical power generators to carry out as part of the autonomous electricity supply systems, as it is sometimes advantageous to understate the main criteria of efficiency of generators, in order to improve, for example, weight and overall dimensions of static converters. The conclusion is made that in order to improve the efficiency of designing contactless electrical power generators in the early stages of designing it is necessary to carry out a preliminary assessment of the main criteria of efficiency of contactless electrical machines. We have also discussed analytical expressions, which might be used for preliminary evaluation of application features for various types of contactless generators in the stand-alone electricity supply systems taking into account the conditions of use

  4. ELECTRIC AND MAGNETIC FIELDS ELECTRIC AND GASOLINE-POWERED VEHICLES.

    Science.gov (United States)

    Tell, Richard A; Kavet, Robert

    2016-12-01

    Measurements were conducted to investigate electric and magnetic fields (EMFs) from 120 Hz to 10 kHz and 1.2 to 100 kHz in 9 electric or hybrid vehicles and 4 gasoline vehicles, all while being driven. The range of fields in the electric vehicles enclosed the range observed in the gasoline vehicles. Mean magnetic fields ranged from nominally 0.6 to 3.5 µT for electric/hybrids depending on the measurement band compared with nominally 0.4 to 0.6 µT for gasoline vehicles. Mean values of electric fields ranged from nominally 2 to 3 V m(-1) for electric/hybrid vehicles depending on the band, compared with 0.9 to 3 V m(-1) for gasoline vehicles. In all cases, the fields were well within published exposure limits for the general population. The measurements were performed with Narda model EHP-50C/EHP-50D EMF analysers that revealed the presence of spurious signals in the EHP-50C unit, which were resolved with the EHP-50D model.

  5. FRAUD DETECTION IN ELECTRIC POWER DISTRIBUTION NETWORKS USING AN ANN-BASED KNOWLEDGE-DISCOVERY PROCESS

    Directory of Open Access Journals (Sweden)

    Breno C. Costa

    2013-11-01

    Full Text Available Nowadays the electric utilities have to handle problems with the non-technical losses caused by frauds and thefts committed by some of their consumers. In order to minimize this, some methodologies have been created to perform the detection of consumers that might be fraudsters. In this context, the use of classification techniques can improve the hit rate of the fraud detection and increase the financial income. This paper proposes the use of the knowledge-discovery in databases process based on artificial neural networks applied to the classifying process of consumers to be inspected. An experiment performed in a Brazilian electric power distribution company indicated an improvement of over 50% of the proposed approach if compared to the previous methods used by that company.

  6. Electric power monthly, March 1998 with data for December 1997

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-03-01

    The Electric Power Monthly (EPM) provides monthly statistics at the State, Census division, and US levels for net generation, fossil fuel consumption and stocks, quantity and quality of fossil fuels, cost of fossil fuels, electricity retail sales, associated revenue, and average revenue per kilowatthour of electricity sold. In addition, data on net generation, fuel consumption, fuel stocks, quantity and cost of fossil fuels are also displayed for the North American Electric Reliability Council (NERC) regions. 63 tabs.

  7. Electric power monthly, December 1998 with data for September 1998

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-12-01

    The Electric Power Monthly (EPM) presents monthly electricity statistics for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. The EIA collected the information in this report to fulfill its data collection and dissemination responsibilities. 57 tabs.

  8. Electric power monthly, February 1999 with data for November 1998

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-02-01

    The Electric Power Monthly presents monthly electricity statistics for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The purpose of this publication is to provide energy decision makers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. Statistics are provided for net generation, fossil fuel consumption and stocks, quantity and quality of fossil fuels, cost of fossil fuels, electricity retail sales, associated revenue, and average revenue per kilowatt-hour of electricity sold.

  9. Optimal Operation of Electric Vehicles in Competitive Electricity Markets and Its Impact on Distribution Power Systems

    DEFF Research Database (Denmark)

    Hu, Weihao; Chen, Zhe; Bak-Jensen, Birgitte

    2011-01-01

    operation strategy for a Plug-In Electric Vehicle (PEV) in relation to the hourly electricity price in order to achieve minimum energy costs of the PEV. The western Danish power system, which is currently the grid area in the world that has the largest share of wind power in its generation profiles and may...... represent the future of electricity markets in some ways, is chosen as the studied power system in this paper. The impact of the optimal operation strategy for electric vehicles together with the optimal load response to spot market price on the distribution power system with high wind power penetrations......Since the hourly spot market price is available one day ahead in Denmark, the electricity price could be transferred to the consumers and they may make some optimal charge and discharge schedules for their electric vehicles in order to minimize their energy costs. This paper presents an optimal...

  10. Annual outlook for US electric power, 1986

    Energy Technology Data Exchange (ETDEWEB)

    1986-04-24

    This document includes summary information on the ownership structure of the US electric utility industry, a description of electric utility regulation, and identification of selected factors likely to affect US electricity markets from 1985 through 1995. This Outlook expands upon projections first presented in the Annual Energy Outlook 1985, offering additional discussion of projected US electricity markets and regional detail. It should be recognized that work on the Annual Energy Outlook 1985 had been completed prior to the sharp reductions in world oil prices experienced early in 1986.

  11. Privatisation electric power sector in Pakistan: some important issues

    Energy Technology Data Exchange (ETDEWEB)

    Ghafoor, A.; Weiss, J.

    1998-06-01

    This discussion paper highlights important issues relating to the privatisation of Pakistan's electric power sector. Salient features of the electric power sector in Pakistan, factors affecting the economic performance of this sector, the partial privatisation policy adopted by Pakistan, ongoing private power projects, and current privatisation policy are examined. The arguments for competition are raised, and alternative policy reforms the are considered.

  12. Development of Electric Power in Honan Province - Communist China

    Science.gov (United States)

    2007-11-02

    communallzatlon, water conservancy cons- truction and commune-run industries have been_^f Soing unprecedentedly rapid development. As agriculture, animal ... husbandry , subsidiary production and fishery all take a leap forward, shortage of electric power and other motive power poses an imperative problem as...34Riding on a well-groomed horse and riding on the East wind, the move- ment for developing electric power is blooming like a red flower. The ’five

  13. Power Consumption Analysis of Electrical Installations at Healthcare Facility

    Directory of Open Access Journals (Sweden)

    Emmanuel Guillen-Garcia

    2017-01-01

    Full Text Available This paper presents a methodology for power consumption estimation considering harmonic and interharmonic content and then it is compared to the power consumption estimation commonly done by commercial equipment based on the fundamental frequency, and how they can underestimate the power consumption considering power quality disturbances (PQD. For this purpose, data of electrical activity at the electrical distribution boards in a healthcare facility is acquired for a long time period with proprietary equipment. An analysis in the acquired current and voltage signals is done, in order to compare the power consumption centered in the fundamental frequency with the generalized definition of power consumption. The results obtained from the comparison in the power consumption estimation show differences between 4% and 10% of underestimated power consumption. Thus, it is demonstrated that the presence of harmonic and interharmonic content provokes a significant underestimation of power consumption using only the power consumption centered at the fundamental frequency.

  14. The Relationship Between Electricity Price and Wind Power Generation in Danish Electricity Markets

    DEFF Research Database (Denmark)

    Hu, Weihao; Chen, Zhe; Bak-Jensen, Birgitte

    2010-01-01

    The western Danish power system is currently the grid area in the world that has the largest share of wind power in its generation profiles, with more than 20% of its annual consumption generated by wind turbines. In this paper, the western Danish power system, which may represent the future...... of competitive electricity markets in some ways, is chosen as the studied power system. The relationship between the electricity price (both the spot price and the regulation price) and the wind power generation in an electricity market is investigated in this paper. The spot price, the down regulation price...

  15. Influence of wind power, plug-in electric vehicles, and heat storages on power system investments

    DEFF Research Database (Denmark)

    Kiviluoma, Juha; Meibom, Peter

    2010-01-01

    electric vehicles. The model runs in an hourly time scale in order to accommodate the impact of variable power production from wind power. Electric vehicles store electricity for later use and can thus serve to increase the flexibility of the power system. Flexibility can also be upgraded by using heat...... storages with heat from heat pumps, electric heat boilers and combined heat and power (CHP) plants. Results show that there is great potential for additional power system flexibility in the production and use of heat.......Due to rising fuel costs, the substantial price for CO2 emissions and decreasing wind power costs, wind power might become the least expensive source of power for an increasing number of power systems. This poses the questions of how wind power might change optimal investments in other forms...

  16. Electric Power Monthly, September 1995: With data for June 1995

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-09-01

    The Electric Power Monthly (EPM) presents monthly electricity statistics for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. The Coal and Electric Data and Renewables Division; Office of Coal, Nuclear, Electric and Alternate Fuels, Energy Information Administration (EIA), Department of Energy prepares the EPM. This publication provides monthly statistics at the State, Census division, and US levels for net generation, fossil fuel consumption and stocks, quantity and quality of fossil fuels, cost of fossil fuels, electricity sales, revenue, and average revenue per kilowatthour of electricity sold. Data on net generation, fuel consumption, fuel stocks, quantity and cost of fossil fuels are also displayed for the North American Electric Reliability Council (NERC) regions.

  17. Electric power monthly: April 1996, with data for January 1996

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-04-01

    The Electric Power Monthly (EPM) presents monthly electricity statistics for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The purpose of this publication is to provide energy decision makers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. The Coal and Electric Data and Renewables Division; Office of Coal, Nuclear, Electric and Alternate Fuels, Energy Information Administration (EIA), Department of Energy prepares the EPM. This publication provides monthly statistics at the State, Census division, and US levels for net generation, fossil fuel consumption and stocks, quantity and quality of fossil fuels, cost of fossil fuels, electricity sales, revenue, and average revenue per kilowatt hour of electricity sold. Data on net generation, fuel consumption, fuel stocks, quantity and cost of fossil fuels are also displayed for the North American Electric Reliability Council (NERC) regions. 64 tabs.

  18. Solar electric power generation photovoltaic energy systems

    CERN Document Server

    Krauter, Stefan CW

    2007-01-01

    Solar electricity is a viable, environmentally sustainable alternative to the world's energy supplies. In support, this work examines the various technical parameters of photovoltaic systems. It analyzes the study of performance and yield (including optical, thermal, and electrical parameters and interfaces).

  19. Valuing options for electric power resources

    Energy Technology Data Exchange (ETDEWEB)

    Cater, J.C.

    1995-04-01

    Derivatives, while new to the electricity industry, have been traded in securities markets for quite some time. Fortunately, established techniques for evaluating and pricing options and futures contracts for other industries and commodities can readily be adapted to their use in the electricity industry.

  20. Optimal Operation of Plug-In Electric Vehicles in Power Systems with High Wind Power Penetrations

    DEFF Research Database (Denmark)

    Hu, Weihao; Su, Chi; Chen, Zhe

    2013-01-01

    The Danish power system has a large penetration of wind power. The wind fluctuation causes a high variation in the power generation, which must be balanced by other sources. The battery storage based Plug-In Electric Vehicles (PEV) may be a possible solution to balance the wind power variations...... in the power systems with high wind power penetrations. In this paper, the integration of plug-in electric vehicles in the power systems with high wind power penetrations is proposed and discussed. Optimal operation strategies of PEV in the spot market are proposed in order to decrease the energy cost for PEV...... owners. Furthermore, the application of battery storage based aggregated PEV is analyzed as a regulation services provider in the power system with high wind power penetrations. The western Danish power system where the total share of annual wind power production is more than 27% of the electrical energy...

  1. Effects of electric vehicles on power systems in Northern Europe

    DEFF Research Database (Denmark)

    Hedegaard, Karsten; Ravn, Hans; Juul, Nina

    2012-01-01

    In this study, it is analysed how a large-scale implementation of plug-in hybrid electric vehicles and battery electric vehicles towards 2030 would influence the power systems of five Northern European countries, Denmark, Finland, Germany, Norway, and Sweden. Increasing shares of electric vehicles....... Moreover, due to vehicle-to-grid capability, EVs can reduce the need for new coal/natural gas power capacities. Wind power can be expected to provide a large share of the electricity for EVs in several of the countries. However, if EVs are not followed up by economic support for renewable energy...... technologies, coal based power will in several cases, particularly in the short term, likely provide a large part of this electricity. The effects of EVs vary significantly from country to country and are sensitive to fuel and CO2 price variations. The EVs bring CO2 reductions of 1e6% in 2025 and 3e28% in 2030...

  2. PCA Fault Feature Extraction in Complex Electric Power Systems

    Directory of Open Access Journals (Sweden)

    ZHANG, J.

    2010-08-01

    Full Text Available Electric power system is one of the most complex artificial systems in the world. The complexity is determined by its characteristics about constitution, configuration, operation, organization, etc. The fault in electric power system cannot be completely avoided. When electric power system operates from normal state to failure or abnormal, its electric quantities (current, voltage and angles, etc. may change significantly. Our researches indicate that the variable with the biggest coefficient in principal component usually corresponds to the fault. Therefore, utilizing real-time measurements of phasor measurement unit, based on principal components analysis technology, we have extracted successfully the distinct features of fault component. Of course, because of the complexity of different types of faults in electric power system, there still exists enormous problems need a close and intensive study.

  3. Wind power and a liberalised North European electricity exchange

    Energy Technology Data Exchange (ETDEWEB)

    Nielsen, L.H.; Morthorst, P.E.; Skytte, K. [and others

    1999-03-01

    Conditions for wind power on a liberalised North European electrical power market are addressed in the paper. Results are presented from a recently completed study carried out by Risoe National Laboratory in collaboration with the Danish electric utilities Eltra, Elsam and Elkraft. A main result from the study is, that the market will be able to provide the necessary power regulation, that will be required year 2005 as consequence of the expected wind power capacity extension, according to the Danish energy plan, Energy21. The averege sales price on the market for the wind-generated electricity is less than the average spot market price, due to provision of power regulation to balance the unpredictability of the wind power. This reduction in the market value of wind power has been calculated to 10-20 DKK/MWh of 1.3-2.7 EUR/MWh. (au)

  4. Regulation of Electric Power Generation while Improving TTP Use Efficiency

    Directory of Open Access Journals (Sweden)

    V. Romaniuk

    2012-01-01

    Full Text Available Taking integrated power system of theRepublicofBelarusas an example the paper considers a possibility of heat accumulator use for TPP operation in accordance with the schedule of electric power consumption while maintaining daily supply of heat energy from turbine power takes-off and without involvement of peak-loader boilers used for covering energy loads.

  5. Multifunctional Converter Drive for Automotive Electric Power Steering Systems

    NARCIS (Netherlands)

    Hackner, T.J.

    2013-01-01

    In this thesis it is shown that in the case of an automotive electric power steering system, critical pulse power loads can be decoupled from the power net with a storage element and a multifunctional converter. A multifunctional converter system is proposed because it uses the motor drive system as

  6. Public power : the fight for publicly owned electricity

    Energy Technology Data Exchange (ETDEWEB)

    Hampton, H.; Reno, B.; O' Connor, M.; Almonte, R. (eds.)

    2003-07-01

    With the restructuring of Ontario's electricity industry, public versus private power is once again an issue of economic and political debate. This book outlines the history of the world's first publicly owned long-distance power system and the development of hydroelectric power generation at Niagara Falls in the late 1880s. The success of Ontario Hydro inspired the public power movement in the United States. This book presents strong arguments in favour of publicly owned electric utilities, emphasizing that it took decades to bring affordable power to all parts of Ontario, including rural regions. The generation, transmission, and distribution of electricity required a system of control and regulation that was in the best public interest. The role that nuclear power and the emerging natural gas industry has had on electric utilities was also discussed. By the mid-1970s it became evident that the drive for nuclear power in Ontario was an economic and environmental mistake. Despite warnings that deregulation and privatization would lead to power shortages and higher prices, Ontario opened its retail electricity markets to competition in 2002, following in the footsteps of many jurisdictions in the United States, the United Kingdom and Alberta. However, with electricity prices sky rocketing, privatization did not gain public support and the government of Ontario responded to public pressure by announcing a four-year rebate/price cap. This intervention angered private electric power companies who argue that deregulation in Ontario has been a failure. The author emphasized that the power industry must work on improving energy efficiency and developing renewable energy sources. Investment in the power grid is also critical to ensure power reliability. refs., figs.

  7. Electric power distribution, automation, protection, and control

    CERN Document Server

    Momoh, James A

    2007-01-01

    * Each Chapter Provides an Introduction, Illustrative Examples, and a SummaryIntroduction to Distribution Automation Systems Historical Background Distribution System Topology and Structure Distribution Automation (DA) and Control Computational Techniques for Distribution Systems Complex Power Concepts Balanced Voltage to Neutral-Connected System Power Relationship for f Y-?-Connected System Per-Unit System Calculation of Power Losses Voltage Regulation Techniques Voltage-Sag Analysis and Calculation Equipment Modeling Components Modeling Distribution System Line Model Distribution Power Flo

  8. Advanced Electric Distribution, Switching, and Conversion Technology for Power Control

    Science.gov (United States)

    Soltis, James V.

    1998-01-01

    The Electrical Power Control Unit currently under development by Sundstrand Aerospace for use on the Fluids Combustion Facility of the International Space Station is the precursor of modular power distribution and conversion concepts for future spacecraft and aircraft applications. This unit combines modular current-limiting flexible remote power controllers and paralleled power converters into one package. Each unit includes three 1-kW, current-limiting power converter modules designed for a variable-ratio load sharing capability. The flexible remote power controllers can be used in parallel to match load requirements and can be programmed for an initial ON or OFF state on powerup. The unit contains an integral cold plate. The modularity and hybridization of the Electrical Power Control Unit sets the course for future spacecraft electrical power systems, both large and small. In such systems, the basic hybridized converter and flexible remote power controller building blocks could be configured to match power distribution and conversion capabilities to load requirements. In addition, the flexible remote power controllers could be configured in assemblies to feed multiple individual loads and could be used in parallel to meet the specific current requirements of each of those loads. Ultimately, the Electrical Power Control Unit design concept could evolve to a common switch module hybrid, or family of hybrids, for both converter and switchgear applications. By assembling hybrids of a common current rating and voltage class in parallel, researchers could readily adapt these units for multiple applications. The Electrical Power Control Unit concept has the potential to be scaled to larger and smaller ratings for both small and large spacecraft and for aircraft where high-power density, remote power controllers or power converters are required and a common replacement part is desired for multiples of a base current rating.

  9. Micro hydro-electric power stations

    Energy Technology Data Exchange (ETDEWEB)

    Monition, L.; Le Nir, M.; Roux, J.

    1984-01-01

    This book provides a discussion of all aspects of hydro-power exploitation using micro-power stations. It offers guidance to techniques for assessing the power available from a given stream, designing and building siteworks, selecting the appropriate turbine types for given conditions, and measuring and controlling environmental hazards associated with micro-hydro installations.

  10. Structural vulnerability assessment of electric power grids

    NARCIS (Netherlands)

    Koç, Y.; Warnier, M.; Kooij, R.E.; Brazier, F.

    2014-01-01

    Cascading failures are the typical reasons of blackouts in power grids. The grid topology plays an important role in determining the dynamics of cascading failures in power grids. Measures for vulnerability analysis are crucial to assure a higher level of robustness of power grids. Metrics from Comp

  11. Electric power monthly, January 1991. [Contains glossary

    Energy Technology Data Exchange (ETDEWEB)

    1991-01-17

    This publication provides monthly statistics at the national, Census division, and state levels for net generation, fuel consumption, fuel stocks, quantity and quality of fuel, cost of fuel, electricity sales, and average revenue per kilowatthour of electricity sold. Data on net generation are also displayed at the North American Electric Reliability Council (NERC) region level. Additionally, company and plant level information are published in the EPM on capability of new plants, net generation, fuel consumption, fuel stocks, quantity and quality of fuel, and cost of fuel. 4 figs., 48 tabs.

  12. Electric power monthly, October 1991. [CONTAINS GLOSSARY

    Energy Technology Data Exchange (ETDEWEB)

    1991-10-11

    This publication provides monthly statistics at the national, Census division, and State levels for net generation, fuel consumption, fuel stocks, quantity and quality of fuel, cost of fuel, electricity sales, revenue, and average revenue per kilowatthour of electricity sold. Data on net generation, fuel consumption, fuel stocks, quantity and cost of fuel are also displayed at the North American Electric Reliability Council (NERC) region level. Additionally, statistics at the company and plant level are published in the EPM on capability of new plants, net generation, fuel consumption, fuel stocks, quantity and quality of fuel, and cost of fuel. 4 figs., 63 tabs.

  13. Electric Power Monthly, September 1991. [CONTAINS GLOSSARY

    Energy Technology Data Exchange (ETDEWEB)

    1991-09-12

    This publication provides monthly statistics at the national, Census division, and state levels for net generation, fuel consumption, fuel stocks, quantity and quality of fuel, cost of fuel, electricity sales, revenue, and average revenue per kilowatthour of electricity sold. Data on net generation, fuel consumption, fuel stocks, quantity and cost of fuel are also displayed at the North American Electric Reliability Council (NERC) region level. Additionally, statistics at the company and plant level are published in the EPM on capability of new plants, net generation, fuel consumption, fuel stocks, quantity and quality of fuel, and cost of fuel. 4 figs., 63 tabs.

  14. Integration of electric drive vehicles in the Danish electricity network with high wind power penetration

    DEFF Research Database (Denmark)

    Chandrashekhara, Divya K; Østergaard, Jacob; Larsen, Esben

    2010-01-01

    /conventional) which are likely to fuel these cars. The study was carried out considering the Danish electricity network state around 2025, when the EDV penetration levels would be significant enough to have an impact on the power system. Some of the interesting findings of this study are - EDV have the potential......This paper presents the results of a study carried out to examine the feasibility of integrating electric drive vehicles (EDV) in the Danish electricity network which is characterised by high wind power penetration. One of the main aims of this study was to examine the effect of electric drive...... vehicles on the Danish electricity network, wind power penetration and electricity market. In particular the study examined the effect of electric drive vehicles on the generation capacity constraints, load curve, cross border transmission capacity and the type of generating sources (renewable...

  15. The photovoltaic electric power; L'electricite photovoltaique

    Energy Technology Data Exchange (ETDEWEB)

    Jautard, Y.; Boudol, Th.

    2000-05-01

    This public information paper recalls the principle of the photovoltaic electric power which transforms the energy of the sun light on electric power using the physical effect of certain materials: the photovoltaic effect. The applications of the photovoltaic cells, their advantages and their limits, in the domain of the electric power production are discussed. The sizing of an autonomous system and its cost are detailed. This paper discussed also the architectural aspects of the solar cells especially concerning the houses roofs. (A.L.B.)

  16. Equilibrium pricing in electricity markets with wind power

    Science.gov (United States)

    Rubin, Ofir David

    Estimates from the World Wind Energy Association assert that world total wind power installed capacity climbed from 18 Gigawatt (GW) to 152 GW from 2000 to 2009. Moreover, according to their predictions, by the end of 2010 global wind power capacity will reach 190 GW. Since electricity is a unique commodity, this remarkable expansion brings forward several key economic questions regarding the integration of significant amount of wind power capacity into deregulated electricity markets. The overall dissertation objective is to develop a comprehensive theoretical framework that enables the modeling of the performance and outcome of wind-integrated electricity markets. This is relevant because the state of knowledge of modeling electricity markets is insufficient for the purpose of wind power considerations. First, there is a need to decide about a consistent representation of deregulated electricity markets. Surprisingly, the related body of literature does not agree on the very economic basics of modeling electricity markets. That is important since we need to capture the fundamentals of electricity markets before we introduce wind power to our study. For example, the structure of the electric industry is a key. If market power is present, the integration of wind power has large consequences on welfare distribution. Since wind power uncertainty changes the dynamics of information it also impacts the ability to manipulate market prices. This is because the quantity supplied by wind energy is not a decision variable. Second, the intermittent spatial nature of wind over a geographical region is important because the market value of wind power capacity is derived from its statistical properties. Once integrated into the market, the distribution of wind will impact the price of electricity produced from conventional sources of energy. Third, although wind power forecasting has improved in recent years, at the time of trading short-term electricity forwards, forecasting

  17. Evaluating perceived quality of CELPE service. A Brazilian power company case study

    Energy Technology Data Exchange (ETDEWEB)

    De Barros Filho, Joao Paes; Da Silva, Cleriston Fritsch Damasio; Do Nascimento Melo, Maria Auxiliadora; De Medeiros, Denise Dumke [Federal University of Pernambuco (UFPE), Center of Technology and Geosciences, 5th floor, Academico Helio Ramos av., Cidade Universitaria, Recife, PE 50.670-901 (Brazil)

    2009-04-15

    This paper presents an application of a methodology for the diagnosis and analysis of the service quality perceived by a Particular Group of CELPE Corporate Customers, a Brazilian power company at Pernambuco State. Concepts, on the power sector, of Quality in Services, Performance Objectives and Critical Factors of Success have been used to develop the analysis. Next, the Critical Factors for a power company were determined and classified in accordance with the performance objectives: Quality, Dependability, Speed and Flexibility. From the factors established, a questionnaire was created to collect data. The case studied involves quantitative research on CELPE's private corporate principal customers using statistical tests to measure internal consistency reliability of the questionnaire scales and to identify underlying concepts, in the four groups analyzed, through which the private corporate customers perceive quality in the given services. Among the goals of this study are to improve the relationship with principal Private Corporate Clients, to create customer loyalty, and to maximize efforts in providing the power supply service, all of them with a view to improving and determining the Global Satisfaction Index. (author)

  18. Evaluating perceived quality of CELPE service: A Brazilian power company case study

    Energy Technology Data Exchange (ETDEWEB)

    Paes de Barros Filho, Joao [Federal University of Pernambuco (UFPE), Center of Technology and Geosciences, 5th floor, Academico Helio Ramos av., Cidade Universitaria, Recife, PE 50.670-901 (Brazil)], E-mail: joaopaes@celpe.com.br; Fritsch Damasio da Silva, Cleriston [Federal University of Pernambuco (UFPE), Center of Technology and Geosciences, 5th floor, Academico Helio Ramos av., Cidade Universitaria, Recife, PE 50.670-901 (Brazil)], E-mail: cleriston_silva@yahoo.com.br; Nascimento Melo, Maria Auxiliadora do [Federal University of Pernambuco (UFPE), Center of Technology and Geosciences, 5th floor, Academico Helio Ramos av., Cidade Universitaria, Recife, PE 50.670-901 (Brazil)], E-mail: manmelo@ufpe.br; Dumke de Medeiros, Denise [Federal University of Pernambuco (UFPE), Center of Technology and Geosciences, 5th floor, Academico Helio Ramos av., Cidade Universitaria, Recife, PE 50.670-901 (Brazil)], E-mail: ddm@ufpe.br

    2009-04-15

    This paper presents an application of a methodology for the diagnosis and analysis of the service quality perceived by a Particular Group of CELPE Corporate Customers, a Brazilian power company at Pernambuco State. Concepts, on the power sector, of Quality in Services, Performance Objectives and Critical Factors of Success have been used to develop the analysis. Next, the Critical Factors for a power company were determined and classified in accordance with the performance objectives: Quality, Dependability, Speed and Flexibility. From the factors established, a questionnaire was created to collect data. The case studied involves quantitative research on CELPE's private corporate principal customers using statistical tests to measure internal consistency reliability of the questionnaire scales and to identify underlying concepts, in the four groups analyzed, through which the private corporate customers perceive quality in the given services. Among the goals of this study are to improve the relationship with principal Private Corporate Clients, to create customer loyalty, and to maximize efforts in providing the power supply service, all of them with a view to improving and determining the Global Satisfaction Index.

  19. Market power in electric power markets: Indications of competitiveness in spatial prices for wholesale electricity

    Science.gov (United States)

    Denton, Michael John

    The issue of market delineation and power in the wholesale electric energy market is explored using three separate approaches: two of these are analyses of spatial pricing data to explore the functional size of the markets, and the third is a series of experimental tests of the effects of different cost structures and market mechanisms on oligopoly strength in those markets. An equilibrium model of spatial network competition is shown to yield linear relationships between spatial prices. A data set comprising two years of spatial weekly peak and off-peak prices and weather for 6 locations in the Western States Coordinating Council and the Southwest Power Pool is subjected to a pairwise cointegration analysis. The use of dummy variables to account the the flow directions is found to significantly improve model performance. The second analytical technique utilizes the extraction of principal components from a spatial price correlation matrix to identify the extent of natural markets. One year of daily price observations for eleven locations within the WSCC is compiled and eigenvectors are extracted and subjected to oblique rotation, each of which is then interpreted as representing a separate geographic market. The results show that two distinct natural markets, correlated at 84%, account for over 96% of the variation in the spatial prices in the WSSC. Together, the findings support the assertion that the wholesale electricity market in the Western U.S. is large and highly competitive. The experimental analysis utilizes a radial three node network in which suppliers located at the outer nodes sell to buyers located at the central node. The parameterization captures the salient characteristics of the existing bulk power markets, and includes cyclical demand, transmission losses, as well as fixed and avoidable fixed costs for all agents. Treatments varied the number of sellers, the avoidable fixed cost structures, and the trading mechanism. Results indicated that

  20. Analysis of the sustainability of using wastes in the Brazilian power industry

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, Luciano Basto; de Araujo, Maria Silvia Muylaert; Rosa, Luiz Pinguelli; Barata, Martha; La Rovere, Emilio Lebre [Energy Planning Program - COPPE/UFRJ (Coordination of the Post Graduation Programs in Engineering at the Federal University of Rio de Janeiro), Centro de Tecnologia, bloco C, sala 211, Cidade Universitaria, Ilha do Fundao, Rio de Janeiro, CEP: 21949-900 (Brazil)

    2008-04-15

    This paper presents a methodology for analyzing the sustainability of using wastes in the Brazilian power industry. It will describe projects, both completed and under development by coordination of the post-graduation programs in engineering (COPPE) at the Federal University of Rio de Janeiro (UFRJ), for generating energy from wastes. The results of these projects were included in a doctoral thesis [Oliveira LB. Aproveitamento energetico de lixo e biodiesel no Brasil (energy use of garbage and biodiesel in Brazil). Dissertation (doctoral), COPPE/UFRJ, 2004, p. 204, http://www.ppe.ufrj.br/ppe/production/tesis/lboliveira.pdf] defended in 2004 at the Energy Planning Program of the COPPE at the UFRJ - PPE/COPPE/UFRJ. The study encompasses an analysis of sustainability using a methodology developed for the above-mentioned dissertation, taking two existing methodologies into account: sustainability analysis and data envelopment analysis. (author)

  1. Electrical Power Station Theory. A Course of Technical Information for Electrical Power Station Wireman Apprentices. Revised Edition.

    Science.gov (United States)

    Lane Community Coll., Eugene, OR.

    This third-year course for electrical power station wirer apprentices is a foundation for the study of all aspects of installation and maintenance of power station equipment. It also provides a good technical background as well as the general knowledge essential to power station operator trainees. The course is intended to be equivalent to a…

  2. Comparing the Topological and Electrical Structure of the North American Electric Power Infrastructure

    Science.gov (United States)

    Cotilla-Sanchez, Eduardo; Hines, Paul D. H.; Barrows, Clayton; Blumsack, Seth

    2012-12-01

    The topological (graph) structure of complex networks often provides valuable information about the performance and vulnerability of the network. However, there are multiple ways to represent a given network as a graph. Electric power transmission and distribution networks have a topological structure that is straightforward to represent and analyze as a graph. However, simple graph models neglect the comprehensive connections between components that result from Ohm's and Kirchhoff's laws. This paper describes the structure of the three North American electric power interconnections, from the perspective of both topological and electrical connectivity. We compare the simple topology of these networks with that of random (Erdos and Renyi, 1959), preferential-attachment (Barabasi and Albert, 1999) and small-world (Watts and Strogatz, 1998) networks of equivalent sizes and find that power grids differ substantially from these abstract models in degree distribution, clustering, diameter and assortativity, and thus conclude that these topological forms may be misleading as models of power systems. To study the electrical connectivity of power systems, we propose a new method for representing electrical structure using electrical distances rather than geographic connections. Comparisons of these two representations of the North American power networks reveal notable differences between the electrical and topological structure of electric power networks.

  3. Control strategies for power distribution networks with electric vehicles integration

    DEFF Research Database (Denmark)

    Hu, Junjie

    of electrical energy. A smart grid can also be dened as an electricity network that can intelligently integrate the actions of all users connected to it - generators, consumers and those that do both - in order to eciently deliver sustainable, economic and secure electricity supplies. This thesis focuses......Demand side resources, like electric vehicles (EVs), can become integral parts of a smart grids because instead of just consuming power they are capable of providing valuable services to power systems. EVs can be used to balance the intermittent renewable energy resources such as wind and solar...... strategies supported by an increased use of information and communication technology. This is the idea of the smart grid. The smart grid is a next-generation electrical power system that is typied by the increased use of communications and information technology in the generation, delivery and consumption...

  4. Wind Power in Electrical Distribution Systems

    DEFF Research Database (Denmark)

    Chen, Zhe

    2013-01-01

    as distributed generators in distribution systems. This paper discusses the issues of wind turbines in distribution systems. Wind power conversion systems briefly introduced, the basic features and technical characteristics of distributed wind power system are described, and the main technical demands......Recent years, wind power is experiencing a rapid growth, large number of wind turbines/wind farms have been installed and connected to power systems. In addition to the large centralised wind farms connected to transmission grids, many distributed wind turbines and wind farms are operated...

  5. Electric power monthly, July 1999, with data for April 1999

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-07-01

    The Electric Power Division, Office of Coal, Nuclear, Electric and Alternate Fuels, Energy Information Administration (EIA), Department of Energy prepares the Electric Power Monthly (EPM). This publication provides monthly statistics at the State, Census division, and US levels for net generation, fossil fuel consumption and stocks, quantity and quality of fossil fuels, cost of fossil fuels, electricity retail sales, associated revenue, and average revenue per kilowatt hour of electricity sold. In addition, data on net generation, fuel consumption, fuel stocks, quantity and cost of fossil fuels are also displayed for the North American Electric Reliability Council (NERC) regions. The EIA publishes statistics in the EPM on net generation by energy source; consumption, stocks, quantity, quality, and cost of fossil fuels; and capability of new generating units by company and plant. 1 fig., 64 tabs.

  6. Automated electric power management and control for Space Station Freedom

    Science.gov (United States)

    Dolce, James L.; Mellor, Pamela A.; Kish, James A.

    1990-01-01

    A comprehensive automation design is being developed for Space Station Freedom's electric power system. It strives to increase station productivity by applying expert systems and conventional algorithms to automate power system operation. An integrated approach to the power system command and control problem is defined and used to direct technology development in: diagnosis, security monitoring and analysis, battery management, and cooperative problem-solving for resource allocation. The prototype automated power system is developed using simulations and test-beds.

  7. Basic Studies on Chaotic Characteristics of Electric Power Market Price

    Science.gov (United States)

    Takeuchi, Yuya; Miyauchi, Hajime; Kita, Toshihiro

    Recently, deregulation and reform of electric power utilities have been progressing in many parts of the world. In Japan, partial deregulation has been started from generation sector since 1995 and partial deregulation of retail sector is executed through twice law revisions. Through the deregulation, because electric power is traded in the market and its price is always fluctuated, it is important for the electric power business to analyze and predict the price. Although the price data of the electric power market is time series data, it is not always proper to analyze by the linear model such as ARMA because the price sometimes changes suddenly. Therefore, in this paper, we apply the methods of chaotic time series analysis, one of non-linear analysis methods, and investigate the chaotic characteristics of the system price of JEPX.

  8. Electrical power assisted steering for EVs and HEVs

    Institute of Scientific and Technical Information of China (English)

    Ma Haibo; Yang Ying

    2011-01-01

    Electrical power assisted steering (EPAS) is one of the key components, especially for electrical vehicle. It has attracted much attention for their advantages with respect to improved fuel economy and has been widely adopted as automotive power-steering equipment in recent years. EPS (electrical power steering) controllers contain MCU (microprocessor control unit) to implement the complex control algorithms. EPS control strategy development is the core technology of the whole system. To achieve the better performance of driving, both mechanical structures and electrical structures are totally designed as a whole. Model-based development is recommended to software design. There are several trends about EPS' future, such as high power EPS development, high voltage EPS development and steering-bywire technology.

  9. Shuttle Electrical Power Analysis Program (SEPAP) distribution circuit analysis report

    Science.gov (United States)

    Torina, E. M.

    1975-01-01

    An analysis and evaluation was made of the operating parameters of the shuttle electrical power distribution circuit under load conditions encountered during a normal Sortie 2 Mission with emphasis on main periods of liftoff and landing.

  10. CDIO – The steam engine powering the electric grid

    DEFF Research Database (Denmark)

    Træholt, Chresten; Holbøll, Joachim; Thomsen, Ole Cornelius

    2011-01-01

    and formulation, experimental inquiry and modelling, finally leading to planning and solution. The goal is to acquire the skills that are needed for an engineer within electric power engineering to analyse a given task, define the necessary steps to solve the task, organize him/her self and others and finally...... solve the task with success. The concrete work is built up around a miniaturized electric energy system powered by a steam engine. The system mimics an essential sub-section of a real electric power system. The process is realised with a combination of optional lectures, optional exercises, 3 set......-ons such as a solar panel or a cable connection to other similar systems and the acquisition of basic skills within electric power engineering....

  11. Wide Output Range Power Processing Unit for Electric Propulsion Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Hall thrusters can be operated over a wide range of specific impulse while maintaining high efficiency. However S/C power system constraints on electric propulsion...

  12. Electric vehicles and large-scale integration of wind power

    DEFF Research Database (Denmark)

    Liu, Wen; Hu, Weihao; Lund, Henrik;

    2013-01-01

    was 6.5% in 2009 and which has the plan to develop large-scale wind power. The results show that electric vehicles (EVs) have the ability to balance the electricity demand and supply and to further the wind power integration. In the best case, the energy system with EV can increase wind power...... with this imbalance and to reduce its high dependence on oil production. For this reason, it is interesting to analyse the extent to which transport electrification can further the renewable energy integration. This paper quantifies this issue in Inner Mongolia, where the share of wind power in the electricity supply......Renewable energy is one of the possible solutions when addressing climate change. Today, large-scale renewable energy integration needs to include the experience to balance the discrepancy between electricity demand and supply. The electrification of transportation may have the potential to deal...

  13. Probabilistic Model-Based Diagnosis for Electrical Power Systems

    Data.gov (United States)

    National Aeronautics and Space Administration — We present in this article a case study of the probabilistic approach to model-based diagnosis. Here, the diagnosed system is a real-world electrical power system,...

  14. Nuclear electric power safety, operation, and control aspects

    CERN Document Server

    Knowles, J Brian

    2013-01-01

    Assesses the engineering of renewable sources for commercial power generation and discusses the safety, operation, and control aspects of nuclear electric power From an expert who advised the European Commission and UK government in the aftermath of Three Mile Island and Chernobyl comes a book that contains experienced engineering assessments of the options for replacing the existing, aged, fossil-fired power stations with renewable, gas-fired, or nuclear plants. From geothermal, solar, and wind to tidal and hydro generation, Nuclear Electric Power: Safety, Operation, and Control Aspects ass

  15. Optimal Power Flow Solution Using Ant Manners for Electrical Network

    Directory of Open Access Journals (Sweden)

    ALLAOUA, B.

    2009-02-01

    Full Text Available This paper presents ant manners and the collective intelligence for electrical network. Solutions for Optimal Power Flow (OPF problem of a power system deliberate via an ant colony optimization metaheuristic method. The objective is to minimize the total fuel cost of thermal generating units and also conserve an acceptable system performance in terms of limits on generator real and reactive power outputs, bus voltages, shunt capacitors/reactors, transformers tap-setting and power flow of transmission lines. Simulation results on the IEEE 30-bus electrical network show that the ant colony optimization method converges quickly to the global optimum.

  16. Precise time and time interval applications to electric power systems

    Science.gov (United States)

    Wilson, Robert E.

    1992-01-01

    There are many applications of precise time and time interval (frequency) in operating modern electric power systems. Many generators and customer loads are operated in parallel. The reliable transfer of electrical power to the consumer partly depends on measuring power system frequency consistently in many locations. The internal oscillators in the widely dispersed frequency measuring units must be syntonized. Elaborate protection and control systems guard the high voltage equipment from short and open circuits. For the highest reliability of electric service, engineers need to study all control system operations. Precise timekeeping networks aid in the analysis of power system operations by synchronizing the clocks on recording instruments. Utility engineers want to reproduce events that caused loss of service to customers. Precise timekeeping networks can synchronize protective relay test-sets. For dependable electrical service, all generators and large motors must remain close to speed synchronism. The stable response of a power system to perturbations is critical to continuity of electrical service. Research shows that measurement of the power system state vector can aid in the monitoring and control of system stability. If power system operators know that a lightning storm is approaching a critical transmission line or transformer, they can modify operating strategies. Knowledge of the location of a short circuit fault can speed the re-energizing of a transmission line. One fault location technique requires clocks synchronized to one microsecond. Current research seeks to find out if one microsecond timekeeping can aid and improve power system control and operation.

  17. Influence of financial crisis in new investments international Brazilian electric sector

    Energy Technology Data Exchange (ETDEWEB)

    Vela, Jorge Alcala; Cantuaria, Andre Luis

    2010-09-15

    Electricity sector in addition to being a public utility, requires a substantial investment, explore natural resources and the basis of all production chains and consumption of our society. In conclusion, the econometric model used to study the investment to 2010 by Eletrobras meets a correlation acceptable. So a well dependence exists between power and investment in the projects selected. The lack of sophistication and low level of development in credit derivatives financial systems in Brazil, both as a healthy situation of the accounts and balance sheets, due to bitter experience in past crises are allowing a better resistance now.

  18. Recent Progress in Electrical Insulation Techniques for HTS Power Apparatus

    Science.gov (United States)

    Hayakawa, Naoki; Kojima, Hiroki; Hanai, Masahiro; Okubo, Hitoshi

    This paper describes the electrical insulation techniques at cryogenic temperatures, i.e. Cryodielectrics, for HTS power apparatus, e.g. HTS power transmission cables, transformers, fault current limiters and SMES. Breakdown and partial discharge characteristics are discussed for different electrical insulation configurations of LN2, sub-cooled LN2, solid, vacuum and their composite insulation systems. Dynamic and static insulation performances with and without taking account of quench in HTS materials are also introduced.

  19. Electrical Power Distribution and Control Modeling and Analysis

    Science.gov (United States)

    Fu, Johnny S.; Liffring, Mark; Mehdi, Ishaque S.

    2001-01-01

    This slide presentation reviews the use of Electrical Power Distribution and Control (EPD&C) Modeling and how modeling can support analysis. The presentation discusses using the EASY5 model to simulate and analyze the Space Shuttle Electric Auxiliary Power Unit. Diagrams of the model schematics are included, as well as graphs of the battery cell impedance, hydraulic load dynamics, and EPD&C response to hydraulic load variations.

  20. Optimal geothermal resource extraction for electric power applications

    Energy Technology Data Exchange (ETDEWEB)

    Blair, P.D.; Cassel, T.A.V.

    1979-06-27

    A phase of ongoing work at the University or Pennsylvania concerning the analysis of capital investments in the development of geothermal electric power facilities is reported. The phase being addressed deals with determining the optimal rate of extraction of geothermal resources for producing electric power. The mathematical approach for estimating an optimal time-path of production to maximize the net present value of a rate sensitive reservoir is formulated.

  1. Electric Power quality Analysis in research reactor: Impacts on nuclear safety assessment and electrical distribution reliability

    Energy Technology Data Exchange (ETDEWEB)

    Touati, Said; Chennai, Salim; Souli, Aissa [Nuclear Research Centre of Birine, Ain Oussera, Djelfa Province (Algeria)

    2015-07-01

    The increased requirements on supervision, control, and performance in modern power systems make power quality monitoring a common practise for utilities. Large databases are created and automatic processing of the data is required for fast and effective use of the available information. Aim of the work presented in this paper is the development of tools for analysis of monitoring power quality data and in particular measurements of voltage and currents in various level of electrical power distribution. The study is extended to evaluate the reliability of the electrical system in nuclear plant. Power Quality is a measure of how well a system supports reliable operation of its loads. A power disturbance or event can involve voltage, current, or frequency. Power disturbances can originate in consumer power systems, consumer loads, or the utility. The effect of power quality problems is the loss power supply leading to severe damage to equipments. So, we try to track and improve system reliability. The assessment can be focused on the study of impact of short circuits on the system, harmonics distortion, power factor improvement and effects of transient disturbances on the Electrical System during motor starting and power system fault conditions. We focus also on the review of the Electrical System design against the Nuclear Directorate Safety Assessment principles, including those extended during the last Fukushima nuclear accident. The simplified configuration of the required system can be extended from this simple scheme. To achieve these studies, we have used a demo ETAP power station software for several simulations. (authors)

  2. Limits to tariff policies in the reformation of the Brazilian electric sector; Limites da politica tarifaria na reforma do setor eletrico brasileiro

    Energy Technology Data Exchange (ETDEWEB)

    Brunetti, Jose L.; Guerra, Sinclair M.-G. [Universidade Estadual de Campinas, SP (Brazil). Faculdade de Engenharia

    1996-12-31

    Since 1977 the Brazilian electric sector has experienced an institutional and economic crisis.The new regulations for this sector and particularly the proposal for restructuring the electric utilities in Sao Paulo are presented 3 refs., 3 tabs.; e-mail: sguerra at fem.unicamp.br

  3. Electrically powered automotive vehicle with an energy recovering apppartus

    OpenAIRE

    Chevroulet, Tristan; Damminger, Ludwig

    1994-01-01

    Electrically driven motor vehicle, comprising mechanical means for braking the driving wheel and at least one electric motor. System for transfering brake energy into air-conditioning device. Enhances electro brake capabilities, provides controlled dissipation means, enables energy recovery & management. Improves accumulator lifetime (limits power surges due to braking). SMH - MCC Smart car concepts (electic & hybrid)

  4. 77 FR 70484 - Preoperational Testing of Onsite Electric Power Systems To Verify Proper Load Group Assignments...

    Science.gov (United States)

    2012-11-26

    ... COMMISSION Preoperational Testing of Onsite Electric Power Systems To Verify Proper Load Group Assignments... Power Systems to Verify Proper Load Group Assignments, Electrical Separation, and Redundancy.'' DG-1294... encompass preoperational testing of electrical power systems used to meet current Station...

  5. Assessment of Electric Power Quality in Ships'Modern Systems

    Institute of Scientific and Technical Information of China (English)

    Janusz Mindykowski; XU Xiao-yan

    2004-01-01

    The paper deals with the selected problems of electric power quality in ships'modern systems.In the introduction the fundamentals of electric power quality assessment,such as the relations and consequences among power quality phenomena and indices,secondly as the methods and tools as well as the appropriate instrumentation,have been shortly presented.Afterwards,the basic characteristic of power systems on modern ships has been given.The main focus of the paper is put on the assessment of electric power quality in ships'systems fitted with converter subsystems.The state of the art and actual tendencies in the discussed matter have been shown.Some chosen experimental results,based on the research carried out under supervision of the author,have been presented,too.Finally,some concluding issues have been shortly commented on.

  6. 78 FR 66785 - Korea Hydro and Nuclear Power Co., Ltd., and Korea Electric Power Corporation

    Science.gov (United States)

    2013-11-06

    ... APR1400 Standard Plant Design submitted by Korea Hydro and Nuclear Power Co., Ltd. (KHNP) and Korea... COMMISSION Korea Hydro and Nuclear Power Co., Ltd., and Korea Electric Power Corporation AGENCY: Nuclear..., construction, operation and maintenance of the Optimized Power Reactor 1000 (OPR1000), the APR1400...

  7. HEMP emergency planning and operating procedures for electric power systems. Power Systems Technology Program

    Energy Technology Data Exchange (ETDEWEB)

    Reddoch, T.W.; Markel, L.C. [Electrotek Concepts, Inc., Knoxville, TN (United States)

    1991-12-31

    Investigations of the impact of high-altitude electromagnetic pulse (HEMP) on electric power systems and electrical equipment have revealed that HEMP creates both misoperation and failures. These events result from both the early time E{sub 1} (steep-front pulse) component and the late time E{sub 3} (geomagnetic perturbations) component of HEMP. In this report a HEMP event is viewed in terms of its marginal impact over classical power system disturbances by considering the unique properties and consequences of HEMP. This report focuses on system-wide electrical component failures and their potential consequences from HEMP. In particular, the effectiveness of planning and operating procedures for electric systems is evaluated while under the influence of HEMP. This assessment relies on published data and characterizes utilities using the North American Electric Reliability Council`s regions and guidelines to model electric power system planning and operations. Key issues addressed by the report include how electric power systems are affected by HEMP and what actions electric utilities can initiate to reduce the consequences of HEMP. The report also reviews the salient features of earlier HEMP studies and projects, examines technology trends in the electric power industry which are affected by HEMP, characterizes the vulnerability of power systems to HEMP, and explores the capability of electric systems to recover from a HEMP event.

  8. China's Electric Power Reform: Different Economics and Challenges

    Institute of Scientific and Technical Information of China (English)

    Zhang Chi; Jin Wen

    2006-01-01

    @@ China's traditional power industry model and power market reform The Chinese government initiated the electric power market reform in December 2002. The reform has since de-integrated the old State Power Corporation into five state-owned power generation companies and two grid companies, established the State Electricity Regulatory Commission, created regional wholesale markets and started experimental wholesale competition. Further de-integration between transmission and distribution and retail market competition are next on the agenda. This reform clearly follows the recent reform practice of the western developed countries to build a competitive power market model. However, the Chinese reform has met with great difficulties and has not yet shown real effects. To understand the problem, it is important to compare some important differences between the Chinese and western power market reforms.

  9. Electric power monthly, May 1995 with data for February 1995

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-05-24

    The Electric Power Monthly (EPM) presents monthly electricity statistics for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The purpose of this publication is to provide energy decisiommakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. The publication provides monthly statistics at the State, Census division, and US levels for net generation, fossil fuel consumption and stocks, quantity and quality of fossil fuel, cost of fossil fuels, electricity sales, revenue, and average revenue per kilowatthour of electricity sold. Data on net generation, fuel consumption, fuel stocks, quantity and cost of fossil fuels are also displayed for the North American Electric Reliability Council (NERC) regions. The EIA publishes statistics in the EPM on net generation by energy source; consumption, stocks, quantity, quality, and cost of fossil fuels; and capability of new generating units by company and plant.

  10. Electric power monthly, May 1998, with data for February 1998

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-05-01

    The Electric Power Monthly (EPM) presents monthly electricity statistics for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. The EIA collected the information in this report to fulfill its data collection and dissemination responsibilities as specified in the Federal Energy Administration Act of 1974. The EPM provides monthly statistics at the State, Census division, and US levels for net generation, fossil fuel consumption and stocks, quantity and quality of fossil fuels, cost of fossil fuels, electricity retail sales, associated revenue, and average revenue per kilowatthour of electricity sold. In addition, data on net generation, fuel consumption, fuel stocks, quantity and cost of fossil fuels are also displayed for the North American Electric Reliability Council (NERC) regions. 30 refs., 58 tabs.

  11. Electric power monthly, August 1998, with data for May 1998

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-08-01

    The Electric Power Monthly (EPM) presents monthly electricity statistics for a wide audience including congress, Federal and State agencies, the electric utility industry, and the general public. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. This publication provides monthly statistics at the State, Census division, and US levels for net generation, fossil fuel consumption and stocks, quantity and quality of fossil fuels, cost of fossil fuels, electricity retail sales, associated revenue, and average revenue per kilowatthour of electricity sold. In addition, data on net generation, fuel consumption, fuel stocks, quantity and cost of fossil fuels are also displayed for the North American Electric Reliability Council (NERC) regions. 9 refs., 57 tabs.

  12. Electric power monthly, March 1999 with data for December 1998

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-03-01

    The Electric Power Monthly (EPM) presents monthly electricity statistics for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be sued in forming various perspectives on electric issues that lie ahead. This publication provides monthly statistics at the State, Census division, and US levels for net generation, fossil fuel consumption and stocks, quantity and quality of fossil fuels, cost of fossil fuels, electricity retail sales, associated revenue, and average revenue per kilowatthour of electricity sold. In addition, data on net generation, fuel consumption, fuel stocks, quantity and cost of fossil fuels are also displayed for the North American Electric Reliability Council (NERC) regions. 63 tabs.

  13. Electric power monthly, December 1997 with data for September 1997

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-12-01

    The Electric Power Monthly (EPM) presents monthly electricity statistics for a wide audience including congress, Federal and State agencies, the electric utility industry, and the general public. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. This publication provides monthly statistics at the State, Census division, and US levels for net generation, fossil fuel consumption and stocks, quantity and quality of fossil fuels, cost of fossil fuels, electricity retail sales, associated revenue, and average revenue per kilowatthour of electricity sold. In addition, data on net generation, fuel consumption, fuel stocks, quantity and cost of fossil fuels are also displayed for the North American Electric Reliability Council (NERC) regions. The EIA publishes statistics in the EPM on net generation by energy source; consumption, stocks, quantity, quality, and cost of fossil fuels; and capability of new generating units by company and plant. 63 tabs.

  14. The electric sector and its insert in a global scenery; O setor eletrico e sua insercao num cenario globalizado

    Energy Technology Data Exchange (ETDEWEB)

    Serrano, Ricardo Oliveira Lopes

    1999-11-01

    The document discusses the following issues of the Brazilian electric power sector: historical aspects; the creation of the ELETROBRAS and the sectorial debts process; financial and productive globalization; electric industry and the new environment and the new businesses. The author concludes the work detaching the new business appearance in the Brazilian electric power sector.

  15. Electricity production by advanced biomass power systems

    Energy Technology Data Exchange (ETDEWEB)

    Solantausta, Y. [VTT Energy, Espoo (Finland). Energy Production Technologies; Bridgwater, T. [Aston Univ. Birmingham (United Kingdom); Beckman, D. [Zeton Inc., Burlington, Ontario (Canada)

    1996-11-01

    This report gives the results of the Pyrolysis Collaborative Project organized by the International Energy Agency (IEA) under Biomass Agreement. The participating countries or organizations were Canada, European Community (EC), Finland, United States of America, and the United Kingdom. The overall objective of the project was to establish baseline assessments for the performance and economics of power production from biomass. Information concerning the performance of biomass-fuelled power plants based on gasification is rather limited, and even less data is available of on pyrolysis based power applications. In order to gain further insight into the potential for these technologies, this study undertook the following tasks: (1) Prepare process models to evaluate the cost and performance of new advanced biomass power production concepts, (2) Assess the technical and economic uncertainties of different biomass power concepts, (3) Compare the concepts in small scale and in medium scale production (5 - 50 MW{sub e}) to conventional alternatives. Processes considered for this assessment were biomass power production technologies based on gasification and pyrolysis. Direct combustion technologies were employed as a reference for comparison to the processes assessed in this study. Wood was used a feedstock, since the most data was available for wood conversion

  16. Electrolysis: Information and Opportunities for Electric Power Utilities

    Energy Technology Data Exchange (ETDEWEB)

    Kroposki, B.; Levene, J.; Harrison, K.; Sen, P.K.; Novachek, F.

    2006-09-01

    Recent advancements in hydrogen technologies and renewable energy applications show promise for economical near- to mid-term conversion to a hydrogen-based economy. As the use of hydrogen for the electric utility and transportation sectors of the U.S. economy unfolds, electric power utilities need to understand the potential benefits and impacts. This report provides a historical perspective of hydrogen, discusses the process of electrolysis for hydrogen production (especially from solar and wind technologies), and describes the opportunities for electric power utilities.

  17. Network modelling of palm biodiesel plants to supply the isolated electric power systems of Pará state

    Directory of Open Access Journals (Sweden)

    Thassyo Jorge Gonçalves Pereira

    2014-09-01

    Full Text Available Despite the great advance brought by the National Interconnected System (NIS, which is able to provide clean hydroelectric power to almost all Brazilian customers, there are still cities supplied by power generated from fossil fuel, which are subsidized by taxes, they are called Isolated Electric Power Systems (IEPS. Pará State, that has 34 cities with IEPS, also has potential to crop raw material (palm and sugar cane to produce biodiesel for power generation. Our study analyzes the supply and distribution network of biodiesel under some scenarios of waterways availability, considering that they are also source of power to the NIS by the construction of hydroelectric dams. We develop specific demand and facility location models and apply them to the scenarios. Our results point to the efficiency of the generated models, the importance of three cities for the network, and to the little impact of some waterways in the total transportation costs.

  18. Systems and methods for an integrated electrical sub-system powered by wind energy

    Science.gov (United States)

    Liu, Yan; Garces, Luis Jose

    2008-06-24

    Various embodiments relate to systems and methods related to an integrated electrically-powered sub-system and wind power system including a wind power source, an electrically-powered sub-system coupled to and at least partially powered by the wind power source, the electrically-powered sub-system being coupled to the wind power source through power converters, and a supervisory controller coupled to the wind power source and the electrically-powered sub-system to monitor and manage the integrated electrically-powered sub-system and wind power system.

  19. Gas-fired wind power and electric hydrogen

    NARCIS (Netherlands)

    2006-01-01

    In the seemingly endless discussions about the pros and cons of wind power even its advocates have to agree that though wind can fly, with offshore wind farms soon to become reality, this only exacerbates the problem of the winds changeability. Even now the major producers of electricity and power g

  20. CHINALCO Repurchased Equity of Ningxia Electric Power Group

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    <正>On the transformation road to promoting coal-power-aluminum integration, CHINALCO moved another step forward. Following the acquisition of 35.3% equity of Ningxia Electric Power Group in August, CHINALCO again announced to buy 23.66% equity of Ningxia

  1. Lunar Module Electrical Power System Design Considerations and Failure Modes

    Science.gov (United States)

    Interbartolo, Michael

    2009-01-01

    This slide presentation reviews the design and redesign considerations of the Apollo lunar module electrical power system. Included in the work are graphics showing the lunar module power system. It describes the in-flight failures, and the lessons learned from these failures.

  2. Limiting electric fields of HVDC overhead power lines.

    Science.gov (United States)

    Leitgeb, N

    2014-05-01

    As a consequence of the increased use of renewable energy and the now long distances between energy generation and consumption, in Europe, electric power transfer by high-voltage (HV) direct current (DC) overhead power lines gains increasing importance. Thousands of kilometers of them are going to be built within the next years. However, existing guidelines and regulations do not yet contain recommendations to limit static electric fields, which are one of the most important criteria for HVDC overhead power lines in terms of tower design, span width and ground clearance. Based on theoretical and experimental data, in this article, static electric fields associated with adverse health effects are analysed and various criteria are derived for limiting static electric field strengths.

  3. Electric power monthly, February 1998 with data for November 1997

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-02-01

    The Electric Power Monthly (EPM) provides monthly statistics at the State, Census division, and US levels for net generation, fossil fuel consumption and stocks, quantity and quality of fossil fuels, cost of fossil fuels, electricity retail sales, associated revenue, and average revenue per kilowatthour of electricity sold. In addition, data on net generation, fuel consumption, fuel stocks, quantity and cost of fossil fuels are also displayed for the North American Electric Reliability Council (NERC) regions. The EIA publishes statistics in the EPM on net generation by energy source; consumption, stocks, quantity, quality, and cost of fossil fuels; and capability of new generating units by company and plant. 63 tabs.

  4. Electric power monthly: March 1996, with data for December 1995

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-03-01

    The Electric Power Monthly (EPM) presents monthly electricity statistics for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The purpose of this publication is to provide energy decision makers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. The EIA collected the information in this report to fulfill its data collection and dissemination responsibilities as specified in the Federal Energy Administration Act of 1974 (Public Law 93-275) as amended. 69 tabs.

  5. Electric power monthly: February 1995, with data for November 1994

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-02-22

    The Electric Power Monthly (EPM) presents monthly electricity statistics for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. The EIA collected the information in this report to fulfill its data collection and dissemination responsibilities as specified in the Federal Energy Administration Act of 1974 (Public Law 93-275) as amended. 64 tabs.

  6. Electric power monthly, January 1999 with data for October 1998

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-01-01

    The Electric Power Monthly (EPM) presents monthly electricity statistics for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. The EIA collected the information in this report to fulfill its data collection and dissemination responsibilities as specified in the Federal Energy Administration Act of 1974 (Public Law 93-275) as amended. 1 fig., 63 tabs.

  7. Electric power monthly, April 1998, with data for January 1998

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-04-01

    The Electric Power Monthly (EPM) presents monthly electricity statistics for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. The EIA collected the information in this report to fulfill its data collection and dissemination responsibilities as specified in the Federal Energy Administration Act of 1974 (Public Law 93-275) as amended. 63 tabs.

  8. Electric power monthly, July 1998 with data for April 1998

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-07-01

    The Electric Power Monthly (EPM) presents monthly electricity statistics for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. The EIA collected the information in this report to fulfill its data collection and dissemination responsibilities as specified in the Federal Energy Administration Act of 1974 (Public Law 93-275) as amended.

  9. Electric power monthly with data for November 1996

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-02-01

    The Electric Power Monthly (EPM) presents monthly electricity statistics for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. The EIA collected the information in this report to fulfill its data collection and dissemination responsibilities as specified in the Federal Energy Administration Act of 1974 (Public Law 93-275) as amended.

  10. Electric power monthly, May 1997 with data for February 1997

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-05-01

    The Electric Power Monthly (EPM) presents monthly electricity statistics for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. The EIA collected the information in this report to fulfill its data collection and dissemination responsibilities as specified in the Federal Energy Administration Act of 1974 (Public Law 93-275) as amended. 63 tabs.

  11. Electric power monthly. June 1966 with data for March 1996

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-06-01

    This publication presents monthly electricity statistics for a wide audience including Congress, Federal and state agencies, the electric utility industry, and the general public, with the purpose of providing energy decisionmakers with accurate, timely information that may be used in forming various perspectives on electric issues that lie ahead. EIA collected the information in this report to fulfill its data collection and dissemination responsibilities (Public Law 93-275). A section on upgrading transmission capacity for wholesale electric power trade is included. The tables include US electric power at a glance, utility net generation, utility consumption of fossil fuels, fossil-fuel stocks/receipts/cost at utilities, utility sales/revenue/revenue per kWh, and monthly plant aggregates.

  12. Generalized sensitivity evaluation of electrical power systems

    Energy Technology Data Exchange (ETDEWEB)

    Grewal, H.K.

    1987-01-01

    The material presented in this thesis is a logical extension of and addition to previous work on network sensitivities as applied to power-system analysis and planning. The continuing tendency of supplementing the existing extra-high voltage a.c. transmission systems with high-voltage d.c. (HVDC) lines was taken into consideration, and various relevant component models were investigated using a new hybrid network formulation based on the methodology developed by Bandler and El-Kady. The load buses, frequently modeled as PQ buses at which both the real and reactive injected powers are known, and the generator buses characterized by a constant voltage magnitude and constant real injected power, have been dealt with by exploiting a special complex conjugate notation. In addition, the current, voltage and/or power relationships associated with the transmission network branches were investigated. A hybrid formulation for generalized power system component models were developed. This novel formulation not only encompasses the work established on the basis of one-port theory, but it is also capable of manipulating multiport, nonreciprocal, a.c. as well as integrated a.c.-d.c. bulk transmission networks.

  13. Chaotic dynamics of controlled electric power systems

    Science.gov (United States)

    Kozlov, V. N.; Trosko, I. U.

    2016-12-01

    The conditions for appearance of chaotic dynamics of electromagnetic and electromechanical processes in energy systems described by the Park-Gorev bilinear differential equations with account for lags of coordinates and restrictions on control have been formulated. On the basis of classical equations, the parameters of synchronous generators and power lines, at which the chaotic dynamics of energy systems appears, have been found. The qualitative and quantitative characteristics of chaotic processes in energy associations of two types, based on the Hopf theorem, and methods of nonstationary linearization and decompositions are given. The properties of spectral characteristics of chaotic processes have been investigated, and the qualitative similarity of bilinear equations of power systems and Lorentz equations have been found. These results can be used for modernization of the systems of control of energy objects. The qualitative and quantitative characteristics for power energy systems as objects of control and for some laws of control with the feedback have been established.

  14. Realization of Matrix Electric Power Conversion with Practicality

    Institute of Scientific and Technical Information of China (English)

    杨喜军; 雷淮刚; 等

    2002-01-01

    A realization of three phase to three phase matrix electric power converter(33MC) with practicality is depicted,which is characteristic of modular configuration,simple and safe and semi-natural semi-forced two-step commutation strategy,general over-current protection circuit,flexible generalized switching functions,combined bilateral power swotches,and so on.A new approach to manufacturing-oriented 33MC comes forth,which is composed of 3 modular three phase to sigle phase non-square matrix electric power converters(31MC).

  15. Handbook of electrical power system dynamics modeling, stability, and control

    CERN Document Server

    Eremia, Mircea

    2013-01-01

    Complete guidance for understanding electrical power system dynamics and blackouts This handbook offers a comprehensive and up-to-date treatment of power system dynamics. Addressing the full range of topics, from the fundamentals to the latest technologies in modeling, stability, and control, Handbook of Electrical Power System Dynamics provides engineers with hands-on guidance for understanding the phenomena leading to blackouts so they can design the most appropriate solutions for a cost-effective and reliable operation. Focusing on system dynamics, the book details

  16. Applying portfolio theory to the electricity sector. Energy versus power

    Energy Technology Data Exchange (ETDEWEB)

    Delarue, Erik; D' haeseleer, William; De Jonghe, Cedric; Belmans, Ronnie [Leuven University, Leuven (Belgium)

    2011-01-15

    Portfolio theory has found its way in numerous applications for optimizing the electricity generation mix of a particular region. Existing models, however, consider typically a single time period and correspondingly do not properly account for actual dispatch constraints and energy sources with a non-dispatchable, variable output. This paper presents a portfolio theory model that explicitly distinguishes between installed capacity (power), electricity generation (energy) and actual instantaneous power delivery. This way, the variability of wind power and ramp limits of conventional power plants are correctly included in the investment optimization. The model is written as a quadratically constrained programming problem and illustrated in a case study. The results show that the introduction of wind power can be motivated to lower the risk on generation cost, albeit to smaller levels than typically reported in the literature. This wind power deployment further requires the need for sufficiently rampable technologies, to deal with its fluctuating output. (author)

  17. Development of Electric Power Units Driven by Waste Heat

    Science.gov (United States)

    Inoue, Naoyuki; Takeuchi, Takao; Kaneko, Atsushi; Uchimura, Tomoyuki; Irie, Kiichi; Watanabe, Hiroyoshi

    For the development of a simple and compact power generator driven by waste heat, working fluids and an expander were studied, then a practical electric power unit was put to test. Many working fluids were calculated with the low temperature power cycle (evaporated at 77°C, condensed at 42°C),and TFE,R123,R245fa were selected to be suitable for the cycle. TFE(Trifluoroethanol CF3CH2OH) was adopted to the actual power generator which was tested. A radial turbine was adopted as an expander, and was newly designed and manufactured for working fluid TFE. The equipment was driven by hot water as heat source and cooling water as cooling source, and generated power was connected with electric utility. Characteristics of the power generating cycle and characteristics of the turbine were obtained experimentally.

  18. Influence of Power System Technology on Electric Propulsion Missions

    Science.gov (United States)

    Oleson, Steven R.

    1995-01-01

    Electric propulsion (EP) thruster technology, with efficient lightweight power systems can provide substantial reductions in propulsion system wet mass due to the high specific impulse (Isp) of the thrusters. Historically, the space power systems are too massive for many potential orbital missions. The objective of this paper is to show the impact of current power system technology on EP mission performance and determine what technology advancements are needed to make EP beneficial for earth orbital applications. The approach of the paper is to model the electric propulsion system and orbital mission using a partial parametric method. Various missions are analyzed from orbit maintenance to orbit transfer. Results portray the relationship between mission performance and power technology level. Conclusions show which mission applications currently have acceptable power technology, and which mission applications require power technology improvements.

  19. Impacts of Electric Vehicle Loads on Power Distribution Systems

    DEFF Research Database (Denmark)

    Pillai, Jayakrishnan Radhakrishna; Bak-Jensen, Birgitte

    2010-01-01

    Electric vehicles (EVs) are the most promising alternative to replace a significant amount of gasoline vehicles to provide cleaner, CO2 free and climate friendly transportation. On integrating more electric vehicles, the electric utilities must analyse the related impacts on the electricity syste...... be accommodated in the network with the smart charging mode. The extent of integrating EVs in an area is constrained by the EV charging behavior and the safe operational limits of electricity system parameters....... operation. This paper investigates the effects on the key power distribution system parameters like voltages, line drops, system losses etc. by integrating electric vehicles in the range of 0-50% of the cars with different charging capacities. The dump as well as smart charging modes of electric vehicles......Electric vehicles (EVs) are the most promising alternative to replace a significant amount of gasoline vehicles to provide cleaner, CO2 free and climate friendly transportation. On integrating more electric vehicles, the electric utilities must analyse the related impacts on the electricity system...

  20. Electric power monthly, November 1998, with data for August 1998

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-11-01

    The Electric Power Monthly (EPM) presents monthly electricity statistics for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. The Electric Power Division; Office of Coal, Nuclear, Electric and Alternate fuels, Energy Information Administration (EIA), Department of Energy prepares the EPM. This publication provides monthly statistics at the State, Census division, and US levels for net generation, fossil fuel consumption and stocks, quantity and quality of fossil fuels, cost of fossil fuels, electricity retail sales, associated revenue, and average revenue per kilowatthour of electricity sold. In addition, data on net generation, fuel consumption, fuel stocks, quantity and cost of fossil fuels are also displayed for the North American Electric Reliability Council (NERC) regions. The EIA publishes statistics in the EPM on net generation by energy source; consumption, stocks, quantity, quality, and cost of fossil fuels; and capability of new generating units by company and plant. 57 tabs.

  1. Electric power monthly, April 1999 with data for January 1999

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-04-01

    The Electric Power Monthly (EPM) presents monthly electricity statistics for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. The Electric Power Division; Office of Coal, Nuclear, Electric and Alternate Fuels, Energy Information Administration (EIA), Department of Energy prepares the EPM. This publication provides monthly statistics at the State, Census division, and US levels for net generation, fossil fuel consumption and stocks, quantity and quality of fossil fuels, cost of fossil fuels, electricity retail sales, associated revenue, and average revenue per kilowatthour of electricity sold. In addition, data on net generation, fuel consumption, fuel stocks, quantity and cost of fossil fuels are also displayed for the North American Electric Reliability Council (NERC) regions. The EIA publishes statistics in the EPM on net generation by energy source; consumption, stocks, quantity, quality, and cost of fossil fuels; and capability of new generating units by company and plant.

  2. Electric power monthly, June 1999, with data for March 1999

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-06-01

    The Electric Power Monthly (EPM) presents monthly electricity statistics for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. The Electric Power Division; Office of Coal, Nuclear, Electric and Alternate Fuels, Energy Information Administration (EIA), Department of Energy prepares the EPM. This publication provides monthly statistics at the State, Census division, and US levels for net generation, fossil fuel consumption and stocks, quantity and quality of fossil fuels, cost of fossil fuels, electricity retail sales, associated revenue, and average revenue per kilowatthour of electricity sold. In addition, data on net generation, fuel consumption, fuel stocks, quantity and cost of fossil fuels are also displayed for the North American Electric Reliability Council (NERC) regions. The EIA publishes statistics in the EPM on net generation by energy source; consumption, stocks, quantity, quality, and cost of fossil fuels; and capability of new generating units by company and plant. 57 tabs.

  3. Electric power monthly, October 1998, with data for July 1998

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-10-01

    The Electric Power Monthly (EPM) presents monthly electricity statistics for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. The Electric Power Division; Office of Coal, Nuclear, Electric and Alternate Fuels, Energy Information Administration (EIA), Department of Energy prepares the EPM. This publication provides monthly statistics at the State, Census division, and US levels for net generation, fossil fuel consumption and stocks, quantity and quality of fossil fuels, cost of fossil fuels, electricity retail sales, associated revenue, and average revenue per kilowatthour of electricity sold. In addition, data on net generation, fuel consumption, fuel stocks, quantity and cost of fossil fuels are also displayed for the North American Electric Reliability Council (NERC) regions. The EIA publishes statistics in the EPM on net generation by energy source; consumption, stocks, quantity, quality, and cost of fossil fuels; and capability of new generating units by company and plant. 57 tabs.

  4. Electric power monthly, September 1998, with data for June 1998

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-09-01

    The Electric Power Monthly (EPM) presents monthly electricity statistics for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. The Electric Power Division; Office of Coal, Nuclear, Electric and Alternate Fuels, Energy Information Administration (EIA), Department of Energy prepares the EPM. This publication provides monthly statistics at the State, Census division, and US levels for net generation, fossil fuel consumption and stocks, quantity and quality of fossil fuels, cost of fossil fuels, electricity retail sales, associated revenue, and average revenue per kilowatthour of electricity sold. In addition, data on net generation, fuel consumption, fuel stocks, quantity and cost of fossil fuels are also displayed for the North American Electric Reliability Council (NERC) regions. The EIA publishes statistics in the EPM on net generation by energy source; consumption, stocks, quantity, quality, and cost of fossil fuels; and capability of new generating units by company and plant.

  5. Software for calculation of electric power systems parameters

    Energy Technology Data Exchange (ETDEWEB)

    Rodriguez, Gustavo; Aromataris, Luis; Donolo, Marcos; Hernandez, Jose; Moitre, Diego [Universidad Nacional de Rio Cuarto, Grupo de Analisis de Sistemas Electricos de Potencia (GASEP), Cordoba (Argentina)

    2003-07-01

    The calculation of power transmission lines parameters of electric energy has a fundamental importance in the design, construction and simulation of electric power systems. Generally, the results obtained are used in the database for the studies of power flow, short circuit and stability . This paper presents a software with graphical interface which allows the estimation of parameters of power transmission lines of electric energy. By means of a tutorial, the user is oriented step by step about the input of data and other features of the line, passing to the calculation stage when the data are correctly and completely entered. The output of the results is shown on the screen on a Pi circuit and through graphics that simulate the voltage drop for a determined load. (Author)

  6. Electromechanical power flowcharts in systems of electrical circuits

    CERN Document Server

    de la Cruz, Jose M Diaz

    2016-01-01

    We present an original undergraduate level compilation for the physics of electromechanical systems with special consideration of power flow. An approach based on energy considerations is presented that is specially suited to compute the mechanical and electrical actions of electromagnetic fields and to draw power flowcharts that clarify the path taken by energy in typical devices. The procedure guarantees energy conservation and provides a consistent way for auditing the power flow.

  7. Environmental effects of interstate power trading on electricity consumption mixes

    Energy Technology Data Exchange (ETDEWEB)

    Joe Marriott; H. Scott Matthews [Carnegie Mellon University, Pittsburgh, PA (United States). Department of Civil and Environmental Engineering

    2005-11-15

    Although many studies of electricity generation use national or state average generation mix assumptions, in reality a great deal of electricity is transferred between states with very different mixes of fossil and renewable fuels, and using the average numbers could result in incorrect conclusions in these studies. The authors create electricity consumption profiles for each state and for key industry sectors in the U.S. based on existing state generation profiles, net state power imports, industry presence by state, and an optimization model to estimate interstate electricity trading. Using these 'consumption mixes' can provide a more accurate assessment of electricity use in life-cycle analyses. It is concluded that the published generation mixes for states that import power are misleading, since the power consumed in-state has a different makeup than the power that was generated. And, while most industry sectors have consumption mixes similar to the U.S. average, some of the most critical sectors of the economy - such as resource extraction and material processing sectors - are very different. This result does validate the average mix assumption made in many environmental assessments, but it is important to accurately quantify the generation methods for electricity used when doing life-cycle analyses. 16 refs., 7 figs., 2 tabs.

  8. PROJECT SCHEDULING OPTIMIZATION IN ELECTRICAL POWER UTILITIES

    Directory of Open Access Journals (Sweden)

    Cleber Mira

    2015-08-01

    Full Text Available The problem of choosing from a set of projects which ones should be executed and whenthey should start, depending on several restrictions involving project costs, risks, limited resources, dependencies among projects, and aiming at different, even conflicting, goals is known as the project portfolio selection (PPS problem. We study a particular version of the PPS problem stemming from the operation of a real power generation company. It includes distinct categories of resources, intricate dependencies between projects, which are especially important for the management of power plants, and the prevention of risks. We present an algorithm based on the GRASP meta-heuristic for finding better results thanmanual solutions produced by specialists. The algorithm yielded solutions that decreased the risk by 47%, as measured by the company's standard methodology.

  9. Voltage quality in electrical power systems

    CERN Document Server

    Schlabbach, J; Stephanblome, T

    2001-01-01

    Problems of voltage quality and their solutions are becoming increasingly important with the growth in power electronics and the high sensitivity of electronic equipment. Translated and updated from the German original published by VDE-Verlag, this book successfully details the theoretical and practical background to low voltage conducted disturbances including harmonics, voltage fluctuation/flicker and asymmetrical voltages. Each chapter is illustrated with practical examples and exercises based on the authors' experience of application problems, including measurement, assessment and remedial

  10. Modelling and simulation of vehicle electric power system

    Science.gov (United States)

    Lee, Wootaik; Choi, Daeho; Sunwoo, Myoungho

    In recent years, the demand for an increased number of vehicle functions by legislation and customer expectations has introduced many electronic control systems and electrical driven units in vehicles and has resulted in steadily increasing electrical loads. Moreover, due to heavy urban traffic conditions, the idling time fraction has increased and reduced the power generation of the alternator. In the vehicle design phase, in order to avoid an over- or under-design problem of the electric power system, it is necessary to understand both the characteristics of each component of the vehicle electric power system and the interactions between the components. For this purpose, model and simulation algorithms of the vehicle power system are required. In this study, the vehicle electric power system, which is mainly composed of a generator and battery, is modelled and evaluated. Among the various proposed battery models, two types are compared in terms of accuracy and ease-of-use. These two models are distinguished by the consideration of inrush current at the beginning of charging and discharging. In addition, a variable terminal voltage alternator model (VTVA model) is proposed, and is compared with a constant terminal voltage alternator model (CTVA model). Based on the major component model, a simulation algorithm is developed and used to perform a case study. Compared with real data from the vehicle, the simulation results of energy generation and consumption are comparable.

  11. MEASURES OF EFFICIENCY AND INVESTMENTS RETURN: AN STUDY OF BRAZILIAN ELECTRICITY DISTRIBUTORS WITH DATA ENVELOPMENT ANALYSIS, MALMQUIST INDEX AND ROI

    Directory of Open Access Journals (Sweden)

    Valter Saurin

    2013-03-01

    Full Text Available This paper aims to determine, in a group of companies from the Brazilian electric sector, if there is a relationship between the return on investment (ROI and the concept of efficiency estimated by the method Data Envelopment Analysis (DEA, as well as evaluating the growth of productivity based on Malmquist Index (Fare et al, 1996. The hypothesis is that firms that had return on investment higher during certain period of time are those employed their resources efficiently in getting their outputs (DEA efficient. The input (1 Products (5 DEA model correspond to the operating cost (I, the network length (km, the number of consumers and the market billed high, medium and low voltage, respectively. The sample consisted of 31 companies of Brazilian electricity distribution and timing of the study was from 2007 to 2009. We calculated the Malmquist index (M0, represented by the change in total factor productivity (TFPC, which is composed by the evolution of technical efficiency (EC and the change in the technological frontier (TC of the companies were also determined ROI for each period. We calculated the correlation between the TFPC, TC, EC, score the DEA and the ROI for the period 2007 to 2009. The results showed a positive correlation, although weak, between efficiency change and the indexes mentioned above, rejecting the initial hypothesis

  12. Long expansion planning of electrical power availability in Brazil under the real options theoretical approach; Planejamento de longo prazo da expansao da oferta de energia eletrica no Brasil sob uma perspectiva da teoria das opcoes reais

    Energy Technology Data Exchange (ETDEWEB)

    Marreco, Juliana de Moraes

    2007-05-15

    This thesis considers uncertainty on the long term generation expansion planning in the Brazilian Electric System, under a Real Options Approach . First, Real Options Theory is used to demonstrate the importance of thermo power plants insertion in Brazil, through a flexibility valuation on hydrothermal system. This is the first objective of this thesis. In the second part a Real Options Model is proposed to support long term expansion studies, based in a levelized costs analysis. The adequacy of proposed models to real problem is illustrated by a case study of the Brazilian Power System. The results show the importance of the energetic matrix diversification on the Long Term Planning. In the expansion model proposed, results are in favor of higher participation of biomass, nuclear power and coal in Brazilian electricity generation matrix. (author)

  13. A New Framework for Reactive Power Dispatch in Electricity Markets

    Directory of Open Access Journals (Sweden)

    Javad Saebi

    2013-01-01

    Full Text Available This study proposes a reactive power dispatch model within the context of electricity markets considering both technical and economical issues. The model utilizes a new metric introduced here for reactive power reserve management in voltage control areas. Besides minimizing total reactive power payments, the objective function manages for an optimum reserve in each voltage control area. The proposed reactive power dispatch model is decoupled from active power dispatch and the generators' active power is assumed fixed during the procedure. The relation between active power and reactive power of a synchronous generator is also included in the model by considering the generators’ capability curves. The CIGRE 32-bus test system is used to demonstrate the feasibility and aspects of the proposed model.

  14. REACTIVE POWER IN THE LONG ELECTRICAL LINES

    Directory of Open Access Journals (Sweden)

    Berzan V.

    2014-12-01

    Full Text Available This paper presents a numerical method for the calculation of electric circuits with distributed parameters with losses that may vary over time. It is proposed to use the energy integral in order to estimate the accuracy of numerical solutions. The elaborated numerical scheme, named Albatross, is conservative with minimal dissipation and dispersion. These properties lead to the fact that the computational error does not accumulate, that gives the possibility to realize the transparent calculations of non stationary solutions without loss of accuracy at large time intervals corresponding to 300…500 electromagnetic wave runs along the line length right up to steady-state regime. The results of calculations for non-homogeneous circuits with distributed parameters are presented graphically. These results can be used as a model to develop new approximate methods for numerical solution of electrotechnical problems. The solutions of these problems have been obtained by means of operator method, complex amplitude method, Fourier method as well as by numerical method Albatross. The results of calculations for various modes in the half-wave transmission line are represented. The comparison between the physical and mathematical experiments in analyzing of different regimes in half-wave electrical transmission line is represented. The comparison of accuracy of the solutions obtained by proposed method, by Finite Difference Time Domain (FDTD method and by Godunov’s scheme for telegraph equations is carried out. It is illustrated, that FDTD method has some limited application for solving the telegraph equations in spite of the fact that it is of second order of accuracy.

  15. Natural monopolies regulation: the electric power transmission tariffs case; Regulacao dos monopolios naturais: o caso das tarifas de transmissao

    Energy Technology Data Exchange (ETDEWEB)

    Santos, Ricardo Henrique dos; Santos, Rosana Rodrigues dos; Sauer, Ildo [Sao Paulo Univ., SP (Brazil). Programa Interunidades de Pos-Graduacao em Energia]. E-mail: rosana2@uol.com.br

    1999-07-01

    The central issue of debate was the need to align the energy sector's options and organization with changing global patterns of economic and social development, characterized by the increasing role played by the private sector, greater integration in the world economy, and new economic and social priorities such as efficiency, decentralization, deregulation, and a closer attention to environmental issues. In this context, the aim of this work is to review the natural monopolies theory, regulation regimes, and the energy transmission tariffs of Brazilian electric power sector.

  16. On units combination and commitment optimization for electric power production

    Institute of Scientific and Technical Information of China (English)

    谭忠富; 何永秀

    2004-01-01

    Electric power system is one of the most important and complex engineering in modern society, supplying main and general power for social production and social life. Meanwhile, since it is a productive system with both high input and output, it has an obvious economic significance to improve its operating efficiency. For an example, an unit is 10 GW year. It will be discussed mainly that how to establish optimization model and its numerical algorithm for operating management of the electric power system. The idea on establishing optimization model is how to dispatch work state of units or power plants, so that total cost of fuel consumption for generation is reduced to the minimum. Here the dispatch is to decide which unit or plant to operate, which unit or plant to stop running, how much power should be generated for those operating units or plants at each given time interval.

  17. Environmental protection implications of the electric power restructuring in Ghana

    DEFF Research Database (Denmark)

    Turkson, J.K.; Amadu, M.B.

    1999-01-01

    The electric utility industries in most African countries are confronted by the twin-problem of deficient capacity and lack of adequate financial resources to undertake capacity expansion of their respective systems. The critical aspects of power sectorreform taking place in many countries...... dams (Akosombo and Kpong hydropower plants) are built is increasingly becoming uncertain, and besides, the power output from the two plants is insufficient tomeet the increasing electricity demand of the country. The alternative is to build thermal power plants to complement the two hydropower plants....... The purposes of the study are: (i) to assess the environmental (more specifically air pollution) implicationsof changing fuel mix in power generation in Ghana within the context of the ongoing reform of the power sector and (ii) to assess the capacity of the environment protection agencies to regulate, monitor...

  18. Review on Automotive Power Generation System on Plug-in Hybrid Electric Vehicles & Electric Vehicles

    Directory of Open Access Journals (Sweden)

    Leong Yap Wee

    2016-01-01

    Full Text Available Regenerative braking is a function to recharge power bank on the Plug-in electric vehicles (PHEV and electric vehicles (EV. The weakness of this system is, it can only perform its function when the vehicle is slowing down or by stepping the brake foot pedal. In other words, the electricity recharging system is inconsistent, non-continuous and geography dependent. To overcome the weakness of the regenerative braking system, it is suggested that to apply another generator which is going to be parallel with the regenerative braking system so that continuous charging can be achieved. Since the ironless electricity generator has a less counter electromotive force (CEMF comparing to an ironcored electricity generator and no cogging torque. Applying the ironless electricity generator parallel to the regenerative braking system is seen one of the options which creates sustainable charging system compared to cored electricity generator.

  19. Implications of power marketing in post-restructured electricity markets

    Energy Technology Data Exchange (ETDEWEB)

    Sioshansi, F.P. [Convector Consulting Inc. (CCI), Menlo Park, CA (United States); Altman, A. [Electric Power Research Inst., Palo Alto, CA (United States)

    1998-12-31

    This paper, which is based on a major study recently completed for the Electric Power Research Institute (EPRI), explains what power marketing is, who the power marketers are, what they actually do, why they do what they do, and what`s behind the industry`s explosive growth in the past few years. This paper also explains what types of products and services power marketers offer, why these products and services are in demand, and what are the fundamental drivers of this demand. Understanding the last item is particularly significant, namely the growth of power marketing in the context of the rapid restructuring of the wholesale - soon to be followed by the retail - electricity markets in the US. Another equally important impetus is the passage of a couple of highly significant US federal legislation since 1992, in the absences of which there would be no power marketing industry as we know it today. Moreover, the paper describes many of the practices commonly employed by power marketers to manage and hedge risks, to take advantage of arbitrage opportunities, and to deliver value-added and structured products and services, which are among the hallmarks of the new industry. Finally, the paper speculates about the longer term growth potential of the new industry and how it may change the traditional electric power business. (orig.)

  20. Commercial statistical bulletin of the Brazilian electric utility Centrais Eletricas de Santa Catarina S.A; Boletim estatistico comercial da CELESC: Centrais Eletricas de Santa Catarina S.A

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-04-01

    Statistical data concerning the Brazilian Centrais Eletricas de Santa Catarina S.A. utility relative to April 1996 are presented. They include, among other things, electricity consumption, number and class of consumers and electricity rates 6 figs., 50 tabs.

  1. Low-cost solar electric power

    CERN Document Server

    Fraas, Lewis M

    2014-01-01

    ?This book describes recent breakthroughs that promise major cost reductions in solar energy production in a clear and highly accessible manner. The author addresses the three key areas that have commonly resulted in criticism of solar energy in the past: cost, availability, and variability. Coverage includes cutting-edge information on recently developed 40? efficient solar cells, which can produce double the power of currently available commercial cells. The discussion also highlights the potentially transformative emergence of opportunities for integration of solar energy storage and natura

  2. High-Power Piezoelectric Acoustic-Electric Power Feedthru for Metal Walls

    Science.gov (United States)

    Bao, Xiaoqi; Biederman, Will; Sherrit, Stewart; Badescu, Mircea; Bar-Cohen, Yoseph; Jones, Christopher; Aldrich, Jack; Chang, Zensheu

    2008-01-01

    Piezoelectric acoustic-electric power feed-through devices transfer electric power wirelessly through a solid wall by using acoustic waves. This approach allows for the removal of holes through structures. The technology is applicable to power supply for electric equipment inside sealed containers, vacuum or pressure vessels, etc where the holes on the wall are prohibitive or result in significant performance degrade or complex designs. In the author's previous work, 100-W electric power was transferred through a metal wall by a small, simple-structure piezoelectric device. To meet requirements of higher power applications, the feasibility to transfer kilowatts level power was investigated. Pre-stressed longitudinal piezoelectric feedthru devices were analyzed by finite element model. An equivalent circuit model was developed to predict the power transfer characteristics to different electric loads. Based on the analysis results, a prototype device was designed, fabricated and a demonstration of the transmission of electric power up to 1-kW was successfully conducted. The methods to minimize the plate wave excitation on the wall were also analyzed. Both model analysis and experimental results are presented in detail in this presentation.

  3. Advanced simulation of windmills in electric power supply

    DEFF Research Database (Denmark)

    Akhmatov, Vladislav; Knudsen, Hans; Nielsen, Arne Hejde

    2000-01-01

    -connected windmills as a part of realistic electrical grid models. That means an arbitrary number of wind farms or single windmills within an arbitrary network configuration. The windmill model may be applied to study of electric power system stability and of power quality as well. It is found that a grid......-connected windmill operates as a low-pass filter, whereby two following observations are made: 1. interaction between the electrical grid and the mechanical systems of grid-connected windmills is given by a low frequency oscillation as the result of disturbances in the electric grid; 2. flicker, which is commonly......An advanced model of a grid-connected windmill is set up where the windmill is a complex electro-mechanical system. The windmill model is implemented as a standardised component in the dynamic simulation tool, PSS/E, which makes it possible to investigate dynamic behaviour of grid...

  4. Legitimising Emerging Power Diplomacy: an Analysis of Government and Media Discourses on Brazilian Foreign Policy under Lula

    Directory of Open Access Journals (Sweden)

    Rafael Mesquita

    2016-06-01

    Full Text Available Abstract This study analyses whether Brazilian foreign policy under Lula successfully legitimised the country's international identity as a rising power in the eyes of the domestic and international media. Based on a constructivist framework, we have applied French Discourse Analysis to a corpus of 36 official addresses by the President of the Republic and the Minister of Foreign Relations and 137 news articles from four news outlets, two Brazilian and two international, concerning two diplomatic episodes deemed representative of Brazil's quest for greater pre-eminence: the leadership of MINUSTAH (2004 and the Nuclear Deal signed with Iran and Turkey (2010. Results show that official discourse characterises Brazil's identity as a rising power chiefly by South-South diplomacy, while media discourse was more heterogeneous, being the discursive formation of each news outlet determinant in explaining their interpretation of Brazil's international identity.

  5. Electric power industry in Korea: Past, present, and future

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Hoesung

    1994-12-31

    Electrical power is an indispensable tool in the industrialization of a developing country. An efficient, reliable source of electricity is a key factor in the establishment of a wide range of industries, and the supply of energy must keep pace with the increasing demand which economic growth creates in order for that growth to be sustained. As one of the most successful of all developing countries, Korea has registered impressive economic growth over the last decade, and it could be said that the rapid growth of the Korean economy would not have been possible without corresponding growth in the supply of electric power. Power producers in Korea, and elsewhere in Asia, are to be commended for successfully meeting the challenge of providing the necessary power to spur what some call an economic miracle. The future continues to hold great potential for participants in the electrical power industry, but a number of important challenges must be met in order for that potential to be fully realized. Demand for electricity continues to grow at a staggering rate, while concerns over the environmental impact of power generating facilities must not be ignored. As it becomes increasingly difficult to finance the rapid, and increasingly larger-scale expansion of the power industry through internal sources, the government must find resources to meet the growing demand at least cost. This will lead to important opportunities for the private sector. It is important, therefore, for those interested in participating in the power production industry and taking advantage of the newly emerging opportunities that lie in the Korean market, and elsewhere in Asia, to discuss the relevant issues and become informed of the specific conditions of each market.

  6. Auction development for the price-based electric power industry

    Science.gov (United States)

    Dekrajangpetch, Somgiat

    The restructuring of the electric power industry is to move away from the cost-based monopolistic environment of the past to the priced-based competitive environment. As the electric power industry is restructuring in many places, there are still many problems that need to be solved. The work in this dissertation contributes to solve some of the electric power auction problems. The majority of this work is aimed to help develop good markets. A LaGrangian relaxation (LR) Centralized Daily Commitment Auction (CDCA) has been implemented. It has been shown that the solution might not be optimal nor fair to some generation companies (GENCOs) when identical or similar generating units participate in a LR CDCA based auction. Supporting information for bidding strategies on how to change unit data to enhance the chances of bid acceptance has been developed. The majority of this work is based on Single Period Commodity Auction (SPCA). Alternative structures for the SPCA are outlined. Whether the optimal solution is degenerated is investigated. Good pricing criteria are summarized and the pricing method following good pricing criteria is developed. Electricity is generally considered as a homogeneous product. When availability level is used as additional characteristic to distinct electricity, electricity can be considered a heterogeneous product. The procedure to trade electricity as a heterogeneous product is developed. The SPCA is formulated as a linear program. The basic IPLP algorithm has been extended so that sensitivity analysis can be performed as in the simplex method. Sensitivity analysis is used to determine market reach. Additionally, sensitivity analysis is used in combination with the investigation of historical auction results to provide raw data for power system expansion. Market power is a critical issue in electric power deregulation. Firms with market power have an advantage over other competitor firms in terms of market reach. Various approaches to

  7. Airport electric vehicle powered by fuel cell

    Science.gov (United States)

    Fontela, Pablo; Soria, Antonio; Mielgo, Javier; Sierra, José Francisco; de Blas, Juan; Gauchia, Lucia; Martínez, Juan M.

    Nowadays, new technologies and breakthroughs in the field of energy efficiency, alternative fuels and added-value electronics are leading to bigger, more sustainable and green thinking applications. Within the Automotive Industry, there is a clear declaration of commitment with the environment and natural resources. The presence of passenger vehicles of hybrid architecture, public transport powered by cleaner fuels, non-aggressive utility vehicles and an encouraging social awareness, are bringing to light a new scenario where conventional and advanced solutions will be in force. This paper presents the evolution of an airport cargo vehicle from battery-based propulsion to a hybrid power unit based on fuel cell, cutting edge batteries and hydrogen as a fuel. Some years back, IBERIA (Major Airline operating in Spain) decided to initiate the replacement of its diesel fleet for battery ones, aiming at a reduction in terms of contamination and noise in the surrounding environment. Unfortunately, due to extreme operating conditions in airports (ambient temperature, intensive use, dirtiness, …), batteries suffered a very severe degradation, which took its toll in terms of autonomy. This reduction in terms of autonomy together with the long battery recharge time made the intensive use of this fleet impractical in everyday demanding conditions.

  8. Solar-Powered Electric Propulsion Systems: Engineering and Applications

    Science.gov (United States)

    Stearns, J. W.; Kerrisk, D. J.

    1966-01-01

    Lightweight, multikilowatt solar power arrays in conjunction with electric propulsion offer potential improvements to space exploration, extending the usefulness of existing launch vehicles to higher-energy missions. Characteristics of solar-powered electric propulsion missions are outlined, and preliminary performance estimates are shown. Spacecraft system engineering is discussed with respect to parametric trade-offs in power and propulsion system design. Relationships between mission performance and propulsion system performance are illustrated. The present state of the art of electric propulsion systems is reviewed and related to the mission requirements identified earlier. The propulsion system design and test requirements for a mission spacecraft are identified and discussed. Although only ion engine systems are currently available, certain plasma propulsion systems offer some advantages in over-all system design. These are identified, and goals are set for plasma-thrustor systems to make them competitive with ion-engine systems for mission applications.

  9. LCA of electricity systems with high wind power penetration

    DEFF Research Database (Denmark)

    Turconi, Roberto; O' Dwyer, C. O.; Flynn, D.

    Electricity systems are shifting from being based on fossil fuels towards renewable sources to enhance energy security and mitigate climate change. However, by introducing high shares of variable renewables - such as wind and solar - dispatchable power plants are required to vary their output...... to fulfill the remaining electrical demand, potentially increasing their environmental impacts [1,2]. In this study the environmental impacts of potential short-term future electricity systems in Ireland with high shares of wind power (35-50% of total installed capacity) were evaluated using life cycle...... considered: while not outweighing the benefits from increasing wind energy, cycling emissions are not negligible and should thus be systematically included (i.e. by using emission factors per unit of fuel input rather than per unit of power generated). Cycling emissions increased with the installed wind...

  10. Electrical Power Budgeting Analysis for LSA-02 UAV Technology Demonstrator

    Science.gov (United States)

    Pranoto, F. S.; Wirawan, A.; Purnamasari, D. A.

    2016-11-01

    This paper addresses the calculation of the LSA-02 UAV electrical power requirement as a technology demonstrator. To answer this issue, the method from ASTM F2490 Standard is used. By adopting that method, the condition of aircraft operation must be defined. Therefore, there are 2 aircraft conditions that will be investigated further. First, the LSA-02 aircraft will be fitted with EO/IR camera and support payload for conducting real-time surveillance system. The other condition is conducting the aerial photography mission to investigate the vegetation condition by equipping the aircraft with a multispectral camera. The results show that the real-time mission will need bigger electrical power requirement comparing to aerial photography mission. To support the mission without sacrificing the other electrical equipment for functioning, the onboard power generator system inside LSA-02 aircraft should be upgraded, at least with 3.5 kVA capacity.

  11. Modern Solutions for Automation of Electrical Traction Power Supply Systems

    Directory of Open Access Journals (Sweden)

    Ana Mihaela Andreica

    2011-09-01

    Full Text Available This paper presents modern solutions for the automation of the electrical traction power supply system used in urban public transport (trams, trolleybuses and subway trains. The monitoring and control of this process uses SCADA distributed architectures, grouped around a central point (dispatcher who controls all field sensors, transmitters and actuators using programmable logical controllers. The presented applications refer to the Bucharest electrical transport infrastructure.

  12. Modeling of Electric Power Consumption by Industrial Enterprises with Ambiguous Interrelation between Power Consumption and Report Output

    Directory of Open Access Journals (Sweden)

    D. R. Moroz

    2007-01-01

    Full Text Available The paper gives description of a method for modeling electric power consumption by industrial enterprises with a complicated technological process that differs in accounting parameters of power consumption distribution laws and volume of output. The proposed method permits reliably to evaluate specific technological consumption of electric power and a direct component of electric power consumption.

  13. RISKS OF LOSING CONTROLLABILITY WHILE LIBERALIZING THE ELECTRIC POWER INDUSTRY

    Directory of Open Access Journals (Sweden)

    Yu. S. Petrusha

    2015-01-01

    Full Text Available The paper analyses controllability qua a reliability characteristic of the electric-power grid controlling system. The following notions are used: the object (environment susceptibility towards the control stimuli, the controlling system adequacy, environment of the secure functioning. The author points to the necessity of accounting for the limitations of technological and organizational character. While liberalizing the electric-power industry, the backbone control-principle “the industry functioning reliability” is being replaced with the principle of “profit-making” that requires complete restatement of the control philosophy.The conflict between commercial benefit gaining and the reliability assurance expenses leads to losing controllability in all the managerial links and to probable catastrophic consequences. The recapitulation of the Russian Federation power industry privatization substantiates concerns of the liberal ideas poor survivability in the ex-Soviet territories. The results of degradation of the secure-functioning environment demonstrate affinity of the mechanisms that triggered the Chernobyl NPP, Fukusima NPP, and Sayan-Shushenskya HPP disasters. Securing reliability of the strategic objects leaves the competence boundaries of the electricpower industry.The topical issue of Belorussian electric-power industry functioning and developing is the combination of technical re-equipment (developing the operational dispatch management and the control-system organizational modernizing in general with gradual and controllable transition to the market mechanisms of functioning. Herewith, preserving the state monopoly on regime provision for the operation of the electric-power system should not leave out the industry appeal for outside investment and is regulated by the optimal degree and intensity of the state participation in governing the electric-power supply industry. The distinction of privatization models and the stages

  14. Study of thermoelectric systems applied to electric power generation

    Energy Technology Data Exchange (ETDEWEB)

    Rodriguez, A.; Vian, J.G.; Astrain, D.; Martinez, A. [Dpto. Ingenieria Mecanica, Energetica y de Materiales, Universidad Publica de Navarra, Pamplona (Spain)

    2009-05-15

    A computational model has been developed in order to simulate the thermal and electric behavior of thermoelectric generators. This model solves the nonlinear system of equations of the thermoelectric and heat transfer equations. The inputs of the program are the thermoelectric parameters as a function of temperature and the boundary conditions, (room temperature and residual heat flux). The outputs are the temperature values of all the elements forming the thermoelectric generator, (performance, electric power, voltage and electric current generated). The model solves the equation system using the finite difference method and semi-empirical expressions for the convection coefficients. A thermoelectric electric power generation test bench has been built in order to validate and determine the accuracy of the computational model, which maximum error is lower than 5%. The objective of this study is to create a design tool that allows us to solve the system of equations involved in the electric generation process without needing to impose boundary conditions that are not known in the design phase, such as the temperature of the Peltier modules. With the computational model, we study the influence of the heat flux supplied as well as the room temperature on the electric power generated. (author)

  15. Electric power monthly: October 1995, with data for July 1995

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-10-19

    The Electric Power Monthly (EPM) presents monthly electricity statistics for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. The Coal and Electric Data and Renewables Division; Office of Coal, Nuclear, Electric and Alternate Fuels, Energy Information Administration (EIA), Department of Energy prepares the EPM. This publication provides monthly statistics at the State, Census division, and US levels for net generation, fossil fuel consumption and stocks, quantity and quality of fossil fuels, cost of fossil fuels, electricity sales, revenue, and average revenue per kilowatthour of electricity sold. Data on net generation, fuel consumption, fuel stocks, quantity and cost of fossil fuels are also displayed for the North American Electric Reliability Council (NERC) regions. The EIA publishes statistics in the EPM on net generation by energy source; consumption, stocks, quantity, quality, and cost of fossil fuels; and capability of new generating units by company and plant.

  16. Analysis of the Fuel Efficiency of a Hybrid Electric Drive with an Electric Power Splitter

    Directory of Open Access Journals (Sweden)

    D. Čundev

    2008-01-01

    Full Text Available This paper presents the results of an analysis of the fuel efficiency of a hybrid electric car drive, with an electric power splitter based on a double rotor synchronous permanent magnet generator. The results have been obtained through a precisely determined mathematical model and by simulating the characteristics of all essential values for the entire drive. This work is related to the experimental working stand for electric and hybrid car drive research, which has been developed at the Faculty of Electrical Engineering (FEE at CTU in Prague. 

  17. Advanced power electronics and electric machinery program

    Energy Technology Data Exchange (ETDEWEB)

    None, None

    2007-12-01

    The U.S. Department of Energy (DOE) and the U.S. Council for Automotive Research (composed of automakers Ford, General Motors, and Chrysler) announced in January 2002 a new cooperative research effort. Known as "FreedomCAR" (derived from "Freedom" and "Cooperative Automotive Research"), it represents DOE's commitment to developing public/private partnerships to fund high-risk, high-payoff research into advanced automotive technologies. Efficient fuel cell technology, which uses hydrogen to power automobiles without air pollution, is a very promising pathway to achieving the ultimate vision. The new partnership replaces and builds upon the Partnership for a New Generation of Vehicles initiative that ran from 1993 through 2001.

  18. The outlook for application of powerful nuclear thermionic reactor - powered space electric jet propulsion engines

    Energy Technology Data Exchange (ETDEWEB)

    Semyonov, Y.P.; Bakanov, Y.A.; Synyavsky, V.V.; Yuditsky, V.D. [Rocket-Space Corp. `Energia`, Moscow (Russian Federation)

    1997-12-31

    This paper summarizes main study results for application of powerful space electric jet propulsion unit (EJPUs) which is powered by Nuclear Thermionic Power Unit (NTPU). They are combined in Nuclear Power/Propulsion Unit (NPPU) which serves as means of spacecraft equipment power supply and spacecraft movement. Problems the paper deals with are the following: information satellites delivery and their on-orbit power supply during 10-15 years, removal of especially hazardous nuclear wastes, mining of asteroid resources and others. Evaluations on power/time/mass relationship for this type of mission are given. EJPU parameters are compatible with Russian existent or being under development launch vehicle. (author)

  19. Basic Research and Development Effort to Design a Micro Nuclear Power Plant for Brazilian Space Applications

    Science.gov (United States)

    Guimares, L. N. F.; Camillo, G. P.; Placco, G. M.; Barrios, G., A., Jr.; Do Nascimento, J. A.; Borges, E. M.; De Castro Lobo, P. D.

    For some years the Nuclear Energy Division of the Institute for Advanced Studies is conducting the TERRA (Portuguese abbreviation for advanced fast reactor technology) project. This project aims at research and development of the key issues related with nuclear energy applied to space technology. The purpose of this development is to allow future Brazilian space explorers the access of a good and reliable heat, power and/or propulsion system based on nuclear energy. Efforts are being made in fuel and nuclear core design, designing and building a closed Brayton cycle loop for energy conversion, heat pipe systems research for passive space heat rejection, developing computational programs for thermal loop safety analysis and other technology that may be used to improve efficiency and operation. Currently there is no specific mission that requires these technology development efforts; therefore, there is a certain degree of freedom in the organization and development efforts. This paper will present what has been achieved so far, what is the current development status, where efforts are heading and a proposed time table to meet development objectives.

  20. Electrical Model of Balanced AC HTS Power Cable

    Science.gov (United States)

    Zuijderduin, R.; Chevtchenko, O.; Smit, J. J.; Willén, D.; Melnik, I.; Geschiere, A.

    The future electricity grid will be more sustainable and it will have more power transmission and distribution capability with more electrical power added from decentralized sources on distribution level and from wind parks and other large sources on transmission level. More interconnections and more underground transmission and distribution will be put up. Use of high temperature superconducting (HTS) power cables provides solutions to many of the future grid problems caused by these trends. In this paper we present an electrical model of a balanced 6 km-long three phase triaxial HTS power cable for the Dutch project being developed by a consortium of Alliander, Ultera™ and TUD. The cable currents in all three phases are balanced by selecting proper twist pitches and insulation thickness. The paper focuses on determining inductances, capacitances and AC losses of the balanced cable. Using the developed model, we also determine the voltage drop as function of the cable length, the neutral current and the effect of the imbalanced capacitances on the current distribution of the Dutch distribution cable. The model is validated and it can be used for accurate simulation of the electrical behaviour of triaxial HTS cables in electrical grids.

  1. 78 FR 26765 - Application to Export Electric Energy; ALLETE, Inc., d/b/a Minnesota Power

    Science.gov (United States)

    2013-05-08

    ... Application to Export Electric Energy; ALLETE, Inc., d/b/a Minnesota Power AGENCY: Office of Electricity... Power (Minnesota Power) has applied to renew its authority to transmit electric energy from the United...-C, which authorized Minnesota Power to transmit electric energy from the United States to Canada...

  2. Generation of Electrical Power from Stimulated Muscle Contractions Evaluated

    Science.gov (United States)

    Lewandowski, Beth; Kilgore, Kevin; Ercegovic, David B.

    2004-01-01

    This project is a collaborative effort between NASA Glenn Research Center's Revolutionary Aeropropulsion Concepts (RAC) Project, part of the NASA Aerospace Propulsion and Power Program of the Aerospace Technology Enterprise, and Case Western Reserve University's Cleveland Functional Electrical Stimulation (FES) Center. The RAC Project foresees implantable power requirements for future applications such as organically based sensor platforms and robotics that can interface with the human senses. One of the goals of the FES Center is to develop a totally implantable neural prosthesis. This goal is based on feedback from patients who would prefer a system with an internal power source over the currently used system with an external power source. The conversion system under investigation would transform the energy produced from a stimulated muscle contraction into electrical energy. We hypothesize that the output power of the system will be greater than the input power necessary to initiate, sustain, and control the electrical conversion system because of the stored potential energy of the muscle. If the system can be made biocompatible, durable, and with the potential for sustained use, then the biological power source will be a viable solution.

  3. Apprenticeship of agents in electric power auctions; Aprendizado de agentes no leilao de energia eletrica

    Energy Technology Data Exchange (ETDEWEB)

    Walter, Igor; Gomide, Fernando [Universidade Estadual de Campinas (UNICAMP), SP (Brazil). Faculdade de Engenharia Eletrica e de Computacao. Dept. de Engenharia de Computacao e Automacao Industrial; Takahashi, Leticia; Correia, Paulo de Barros [Universidade Estadual de Campinas (UNICAMP), SP (Brazil). Faculdade de Engenharia Mecanica

    2006-07-01

    Auctions are used in a myriad of economic transactions through different trading environments. This work addresses simulation and implementation of power auction strategies based on an actual case, namely, first auction of existent energy recently completed by the Brazilian electricity sector. Auctions provide formal methods to allocate resources based on competition, where sellers and buyers aim to maximize their benefit. The goal of this work is to study automatic learning of bidding strategies for an agent playing in a power auction. The agent learns bidding strategies from data and information commonly available during electronic auctions. The intelligent power auction agent learning approach is based on neural dynamic programming, a scheme that combines dynamic programming and neural networks techniques. Evidences suggest that the neural dynamic programming is an effective learning approach for power auction learning agents. More specifically, it is shown that Q-learning mechanism is a valuable approach to learn sub-optimal bidding policies in real time when using neural network for function approximation. (author)

  4. Electric power transport costs - methodologies analysis; Custos de transporte de energia eletrica: analise de metodologias

    Energy Technology Data Exchange (ETDEWEB)

    Takahata, Dario

    1997-07-01

    The dissertation presents the aspects related to the restructuring of power systems in terms of international experiences, and the possible implications for the definition of the new power system in Brazil. The experience shows that the reform in various countries has started from the sector deverticalization, together with the transmissions open access scheme. The retrospect of researched countries indicates that the transmissions remuneration is based on a methodology that recovers the operative cost of transmission transactions, along with an additional amount that take into account the cost of the existing transmission system. The following countries have been analyzed: Chile, Norway, England and Argentina. This work also shows the current situation in Brazil, as in terms of tariffs, as regarding the power system organizational structure, as well as a preliminary proposal conceived by SINTREL (National System of Electrical Energy Transmission) to evaluate the transmission transaction cost. This dissertation ended with comments and conclusions, depicting a future program which might be followed, considering the aspects quoted above and the peculiarities of brazilian power system. (author)

  5. Electric power systems advanced forecasting techniques and optimal generation scheduling

    CERN Document Server

    Catalão, João P S

    2012-01-01

    Overview of Electric Power Generation SystemsCláudio MonteiroUncertainty and Risk in Generation SchedulingRabih A. JabrShort-Term Load ForecastingAlexandre P. Alves da Silva and Vitor H. FerreiraShort-Term Electricity Price ForecastingNima AmjadyShort-Term Wind Power ForecastingGregor Giebel and Michael DenhardPrice-Based Scheduling for GencosGovinda B. Shrestha and Songbo QiaoOptimal Self-Schedule of a Hydro Producer under UncertaintyF. Javier Díaz and Javie

  6. Optimal contracts for wind power producers in electricity markets

    KAUST Repository

    Bitar, E.

    2010-12-01

    This paper is focused on optimal contracts for an independent wind power producer in conventional electricity markets. Starting with a simple model of the uncertainty in the production of power from a wind turbine farm and a model for the electric energy market, we derive analytical expressions for optimal contract size and corresponding expected optimal profit. We also address problems involving overproduction penalties, cost of reserves, and utility of additional sensor information. We obtain analytical expressions for marginal profits from investing in local generation and energy storage. ©2010 IEEE.

  7. Modeling and Nonlinear Control of Electric Power Stage in Hybrid Electric Vehicle

    DEFF Research Database (Denmark)

    Tahri, A.; El Fadil, H.; Guerrero, Josep M.;

    2014-01-01

    This paper deals with the problem of modeling and controlling the electric power stage of hybrid electric vehicle. The controlled system consists of a fuel cell (FC) as a main source, a supercapacitor as an auxiliary source, two DC-DC power converters, an inverter and a traction induction motor...... based approach is used to control the DC/DC power converters associated with the DC sources, the backstepping technique combined with the field oriented control strategy are invoked in order to control the induction motor. It is formally shown, using a theoretical analysis and simulation results...

  8. Electric vehicles in Danish power system with large penetration of wind power

    DEFF Research Database (Denmark)

    Yang, Lihui; Xu, Zhao; Østergaard, Jacob

    2011-01-01

    is made of the potential for using EVs in Denmark, and the benefits of the electric power system with high wind power generation by intelligent charging and discharging of EVs are enumerated. Based on the analysis, important technological gaps are identified, and the corresponding research and development......). The managing structure of V2G adopting virtual power plant (VPP) technology is proposed. © 2011 State Grid Electric Power Research Institute Press.......Electric vehicles (EVs) provide a unique opportunity for reducing the CO2 emissions from the transport sector. At the same time, EVs have the potential to play an important role in the economical and reliable operation of an electricity system with high penetration of renewable energy. An analysis...

  9. Power feature required for PEFC powered electric propulsion ship

    Energy Technology Data Exchange (ETDEWEB)

    Yoshida, Isao [NKK Corp., Yokohama (Japan); Oka, Masaru [Mitsubishi Heavy Industries, Ltd., Nagasaki (Japan)

    1996-12-31

    This report covers part of a joint study on a PEFC system for ship propulsion, summarized in a presentation to this Seminar, entitled {open_quote}Study on a Polymer Electrolyte Fuel Cell (PEFC) Propulsion System for Surface Ships{close_quotes}, and which envisages application to a 1,500 DWT cargo vessel. The aspect treated here concerns an analysis of the load-following performance required and estimated of a PEFC system to power the envisaged ship. The analysis proved that difficulty should be expected of the fuel supply circuit in following with adequate rapidity the sharp changes of load on fuel cell under certain conditions. Further integrated experiments and simulation exercises are currently in progress to further analyze the response characteristics of the fuel supply circuit-particularly of the methanol reformer and gas reservoir-to determine the best measure to be adopted for overcoming the expected difficulty.

  10. Impacts and Utilization of Electric Vehicles Integration Into Power Systems

    Institute of Scientific and Technical Information of China (English)

    HUZechun; SONG Yonghua; XU Zhiwei; LUO Zhuowei; ZHAN Kaiqiao; JIA Long

    2012-01-01

    With the increasing of electric vehicles (EVs) penetration in power grids, the charging of EVs will have significant impacts on power system planning and operation. It is necessary to note that the majority of EVs are not in use in most of the time in a day. Therefore, the onboard batteries can be utilized as energy storage devices. This article reviews and discusses the current related research in the following areas.

  11. Electrical Power Analysis Using the Scattering Bond Graph

    Directory of Open Access Journals (Sweden)

    Roberto Tapia-Sánchez

    2015-01-01

    Full Text Available The perspective of the well known concept of active and reactive power in electrical systems is addressed in this paper. This concept is presented from the point of view of the bond graph methodology. The scattering matrix concept is used in order to deal with these formulations. The concept of active and reactive power is presented with some examples derived from single-phase AC circuits. The formulations and simulations of these circuits are presented.

  12. Analyzing the dynamic stability of controlled electric power systems

    Energy Technology Data Exchange (ETDEWEB)

    Nikolaeva, S.I.

    1983-01-01

    Techniques from the theory of optimal control are used to consider the possibilities for evaluating the effectiveness of emergency control of turbines at power plants of complex electric power systems. An algorithm is given for calculating the optimal control functions; it has been developed on the basis of the Pontryagin principle of the maximum and the method of quasi-linearization. Calculations for a particular four-machine circuit are used to evaluate the factors affecting the computational effectiveness of the algorithm.

  13. Preliminary design of the PANSAT electrical power subsystem

    OpenAIRE

    Noble, Michael Lynn

    1990-01-01

    Approved for public release; distribution unlimited. This thesis presents a preliminary design of the electrical power system (EPS) for the Naval Postgraduate School's Petite Amateur Navy Satellite (PANSAT). The EPS is a photovoltaic silicon cell system consisting of solar array, batteries, battery charge regulator (BCR), and dc-dc convertors. The EPS provides power for up to two years of low earth orbit (480 km) operations. The solar array consists of 17 panels with thirty-two 2x4 cm sola...

  14. Electric power from offshore wind via synoptic-scale interconnection.

    Science.gov (United States)

    Kempton, Willett; Pimenta, Felipe M; Veron, Dana E; Colle, Brian A

    2010-04-20

    World wind power resources are abundant, but their utilization could be limited because wind fluctuates rather than providing steady power. We hypothesize that wind power output could be stabilized if wind generators were located in a meteorologically designed configuration and electrically connected. Based on 5 yr of wind data from 11 meteorological stations, distributed over a 2,500 km extent along the U.S. East Coast, power output for each hour at each site is calculated. Each individual wind power generation site exhibits the expected power ups and downs. But when we simulate a power line connecting them, called here the Atlantic Transmission Grid, the output from the entire set of generators rarely reaches either low or full power, and power changes slowly. Notably, during the 5-yr study period, the amount of power shifted up and down but never stopped. This finding is explained by examining in detail the high and low output periods, using reanalysis data to show the weather phenomena responsible for steady production and for the occasional periods of low power. We conclude with suggested institutions appropriate to create and manage the power system analyzed here.

  15. Energy regeneration model of self-consistent field of electron beams into electric power*

    Science.gov (United States)

    Kazmin, B. N.; Ryzhov, D. R.; Trifanov, I. V.; Snezhko, A. A.; Savelyeva, M. V.

    2016-04-01

    We consider physic-mathematical models of electric processes in electron beams, conversion of beam parameters into electric power values and their transformation into users’ electric power grid (onboard spacecraft network). We perform computer simulation validating high energy efficiency of the studied processes to be applied in the electric power technology to produce the power as well as electric power plants and propulsion installation in the spacecraft.

  16. The Analysis of The Fault of Electrical Power Steering

    Directory of Open Access Journals (Sweden)

    Zhang Li Wen

    2016-01-01

    Full Text Available This paper analysis the common fault types of primary Electrical Power Steering system, meanwhile classify every fault. It provides the basis for further troubleshooting and maintenance. At the same time this paper propose a practical working principle of fault-tolerant, in order to make the EPS system more security and durability.

  17. Wind power impacts and electricity storage - a time scale perspective

    DEFF Research Database (Denmark)

    Hedegaard, Karsten; Meibom, Peter

    2012-01-01

    technologies – batteries, flow batteries, compressed air energy storage, electrolysis combined with fuel cells, and electric vehicles – are moreover categorised with respect to the time scales at which they are suited to support wind power integration. While all of these technologies are assessed suitable...

  18. Electrical Collection and Transmission Systems for Offshore Wind Power: Preprint

    Energy Technology Data Exchange (ETDEWEB)

    Green, J.; Bowen, A.; Fingersh, L.J.; Wan, Y.

    2007-03-01

    The electrical systems needed for offshore wind farms to collect power from wind turbines--and transmit it to shore--will be a significant cost element of these systems. This paper describes the development of a simplified model of the cost and performance of such systems.

  19. Acrylic acid and electric power cogeneration in an SOFC reactor.

    Science.gov (United States)

    Ji, Baofeng; Wang, Jibo; Chu, Wenling; Yang, Weishen; Lin, Liwu

    2009-04-21

    A highly efficient catalyst, MoV(0.3)Te(0.17)Nb(0.12)O, used for acrylic acid (AA) production from propane, was used as an anodic catalyst in an SOFC reactor, from which AA and electric power were cogenerated at 400-450 degrees C.

  20. Problem Manual for Power Processing, Part 1. Electric Machinery Analysis.

    Science.gov (United States)

    Hamilton, Howard B.

    This publication was developed as a portion of a two-semester sequence commencing at either the sixth or seventh term of the undergraduate program in electrical engineering at the University of Pittsburgh. The materials of the two courses, produced by a National Science Foundation grant, are concerned with power conversion systems comprising power…

  1. Laboratory Manual for Power Processing, Part 1. Electric Machinery Analysis.

    Science.gov (United States)

    Hamilton, Howard B.

    This publication was developed as a portion of a two-semester sequence commencing at either the sixth or seventh term of the undergraduate program in electrical engineering at the University of Pittsburgh. The materials of the two courses, produced by a National Science Foundation grant, are concerned with power conversion systems comprising power…

  2. Nuclear Power’s Role in Generating Electricity

    Science.gov (United States)

    2008-05-01

    ignited. Such integrated-gasification combined-cycle ( IGCC ) technology, which is already in use at a few power plants that do not capture carbon...Congressional Budget Office also esti- mated the cost of electricity from new IGCC plants without CCS. Those results are not presented because they are

  3. Engineering study for the phase 1 privatization facilities electrical power

    Energy Technology Data Exchange (ETDEWEB)

    Singh, G., Westinghouse Hanford

    1996-07-18

    This engineering study evaluates the availability of electric power from the existing 13.8 kV substation, BPA 115 kV system,and RL 230 kV transmission line; for supporting the Privatization Phase I Facilities. 230 kV system is a preferable alternative.

  4. Electric Power monthly, November 1995 with data for August 1995

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-11-15

    This report presents monthly electricity statistics, with the purpose of providing energy decisionmakers with accurate, timely information that may be used in forming various perspectives on electric issues that lie ahead. EIA collected the information in this report to fulfill its data collection and dissemination responsibilities; the information are from six data sources: forms EIA-759, FERC Form 423, EIA-826, EIA-861, EIA-860, and Form OE-417R. An article on reclicensing and environmental issues affecting hydropower is included. Then the statistics are presented in: US electric power at a glance, utility net generation, utility consumption of fossil fuels, fossil-fuel stocks at utilities, fossil fuel receipts and costs, utility sales/revenue/average revenue per kWh, and monthly plant aggregates. Finally, nonutility power producer statistics, bibliography, technical notes, and a glossary are presented.

  5. Environmental protection implications of the electric power restructuring in Ghana

    Energy Technology Data Exchange (ETDEWEB)

    Turkson, J.K. [UNEP Collaborating Centre on Energy and Environment, Roskilde (Denmark); Amadu, M.B. [Kumasi Inst. of Technology, Energy and Environment, Kumasi (Ghana)

    1999-09-01

    The electric utility industries in most African countries are confronted by the twin-problem of deficient capacity and lack of adequate financial resources to undertake capacity expansion of their respective systems. The critical aspects of power sector reform taking place in many countries are the shift away from state-owned monopoly model towards private sector participation and some competition in the industry. Hydropower plants dominate power system in most countries in the region. Ghana, which is the focus of this study, has such characteristics. The hydrology of the river on which the two dams (Akosombo and Kpong hydropower plants) are built is increasingly becoming uncertain, and besides, the power output from the two plants is insufficient to meet the increasing electricity demand of the country. The alternative is to build thermal power plants to complement the two hydropower plants. The purposes of the study are: (i) to assess the environmental (more specifically air pollution) implications of changing fuel mix in power generation in Ghana within the context of the ongoing reform of the power sector and (ii) to assess the capacity of the environment protection agencies to regulate, monitor and enforce regulations in the emerging electricity industry. The study uses a spreadsheet-based simulation model to determine the potential levels of certain air pollutants - CO{sub 2}, SO{sub 2} and NO{sub x} - that would result from changes in fuel mix for electricity generation. Using different capacity expansion options proposed for The Volta River Authority (VRA) between 1997-2013, the levels of these air pollutants are estimated. The study further describes other potential environmental impacts of changes in fuel mix in power generation. (au)

  6. Identifying power line harmonic radiation from an electrical network

    Directory of Open Access Journals (Sweden)

    S. M. Werner

    2005-09-01

    Full Text Available It has been suggested that the space environment is being polluted by power line harmonic radiation (PLHR, generated from harmonics of the electrical power transmission frequency (50 or 60 Hz and radiated into the ionosphere and magnetosphere by long power lines. While some in-situ satellite measurements of PLHR have been reported, it has proved difficult to confirm the source and overall significance. The electricity network of the city of Dunedin, New Zealand, is tiny compared to the many large industrial zones found outside New Zealand. However, the 1050Hz ripple control signal injected into the local electrical grid at regular intervals as a load-control mechanism provides an opportunity for identifying PLHR strengths radiated from a spatially well defined electrical network. In-situ observations by satellites should allow a greater understanding of PLHR and its significance as man-made pollution to near-Earth space. Calculations have been undertaken to estimate the strength of the radiation fields expected from the ripple control signal which is injected into the Dunedin city electrical network. We find that ground-based measurements will not be sensitive enough for detection of the ripple control radiation fields, even during the quietest winter night. While significant power penetrates the lower ionosphere, this is well below the reported threshold required for nonlinear triggering in the Van Allen radiation belts. Some radiated fields at satellite altitudes should be detectable, allowing in-situ measurements. At the altitude of the DEMETER mission, the radiated electric fields will not be detectable under any ionospheric conditions. However, we find that the radiated magnetic fields may be detectable by the DEMETER satellite at certain times, although this will be very difficult. Nonetheless, there is the possibility for future experimental campaigns.

    Keywords. Magnetospheric physics (Magnetosphereionosphere interactions; Plasma

  7. Engineering electrodynamics electric machine, transformer, and power equipment design

    CERN Document Server

    Turowski, Janusz

    2013-01-01

    Due to a huge concentration of electromagnetic fields and eddy currents, large power equipment and systems are prone to crushing forces, overheating, and overloading. Luckily, power failures due to disturbances like these can be predicted and/or prevented.Based on the success of internationally acclaimed computer programs, such as the authors' own RNM-3D, Engineering Electrodynamics: Electric Machine, Transformer, and Power Equipment Design explains how to implement industry-proven modeling and design techniques to solve complex electromagnetic phenomena. Considering recent progress in magneti

  8. Reduction of Topological Connectivity Information in Electric Power Grids

    DEFF Research Database (Denmark)

    Prostejovsky, Alexander; Gehrke, Oliver; Marinelli, Mattia;

    2016-01-01

    Electric power distribution grids increasingly use higher levels of monitoring and automation, both dependent on grid topology. However, the total amount of information to adequately describe power grids is vast and needs to be reduced when used locally. This work presents an approach for reducing...... and assembling power grid topologies in a decentralized way, such that full details of the local grid neighborhood are preserved, while remote areas get reduced in detail. Full connectivity information is retained. Practical evaluation is performed on a modified version of the 906-bus IEEE European low...

  9. Electricity price as a factor of the national electric power industry sustainability

    Directory of Open Access Journals (Sweden)

    Filipović Sanja

    2012-12-01

    Full Text Available PE Elektroprivreda Srbije (Electric Power Industry of Serbia - PE EPS is of a strategic importance for national economy. Long-term policy of depressed electricity price has caused a number of distortions, mainly through direct impact on the operations of EPS and a number of other effects such as irrational consumption, high energy intensity, low charges, high level of technical and commercial losses, etc. Serbia still has the lowest electricity price in Europe, but regulated price model provides a certain profit level for EPS. The aim of this paper is to show the potential that the electric power industry as a branch can have if the Government provides the conditions for its sustainable operation.

  10. High Power Electric Propulsion for Outer Planet Missions

    Science.gov (United States)

    Donahue, Benjamin B.

    2003-01-01

    Focused technology trade studies for Nuclear Electric Propulsion vehicle concepts for outer planet missions are presented; representative mission, vehicle and technology characterizations illustrate samples of work done under the NASA Marshall Space Flight Center-Boeing-SAIC In-Space Technology Assessment (ISTA) contract. An objective of ISTA is to identify and present sound technical and programtic options for the formulation and implementation of advanced electric and chemical propulsion solar system exploration missions. Investigations to date include a variety of outer planet destinations, trip times, science payload allotments, orbital capture techniques, all conducted to illustrate how advanced technology would maximize mission benefits. Architecture wide optimizations that facilitate good propulsion technology investments for advanced electric and chemical propulsion systems were conducted, including those relevant to the nuclear system initiative. Representative analyses of vehicles utilizing fission reactors with advanced power generation, Conversion, processing and electric propulsion systems, which would enable scientifically rich robotic exploration missions, are presented.

  11. [Negotiating knowledge and power: the National Policy for Comprehensive Men's Healthcare and the Brazilian Society of Urology].

    Science.gov (United States)

    Müller, Rita Flores; Birman, Joel

    2016-01-01

    The aim of this article is to demonstrate the negotiations and disputes between different kinds of knowledge and power in the history of the Brazilian National Policy for Comprehensive Men's Healthcare based on the creation in 2008 of the Technical Area for Men's Health within the Ministry of Health's Department of Strategic Programs. We observed the Brazilian Society of Urology's position as the policy was being drawn up, including the discourse adopted, based on interviews held with managers from the Ministry of Health and the assistant representative of the United Nations Population Fund in Brazil. We analyzed the visibility of the male body in signs of resistance to the interventions of biopower in the expression of the right to health.

  12. Comparing the Topological and Electrical Structure of the North American Electric Power Infrastructure

    CERN Document Server

    Cotilla-Sanchez, Eduardo; Barrows, Clayton; Blumsack, Seth

    2011-01-01

    The topological (graph) structure of complex networks often provides valuable information about the performance and vulnerability of the network. However, there are multiple ways to represent a given network as a graph. Electric power transmission and distribution networks have a topological structure that is straightforward to represent and analyze as a graph. However, simple graph models neglect the comprehensive connections between components that result from Ohm's and Kirchhoff's laws. This paper describes the structure of the three North American electric power interconnections, from the perspective of both topological and electrical connectivity. We compare the simple topology of these networks with that of random (Erdos, 1959), preferential-attachment (Barabasi,1999) and small-world (Watts, 1998) networks of equivalent sizes and find that power grids differ substantially from these abstract models in degree distribution, clustering, diameter and assortativity, and thus conclude that these topological f...

  13. Intelligent Electric Power Systems with Active-Adaptive Electric Networks: Challenges for Simulation Tools

    Directory of Open Access Journals (Sweden)

    Ufa Ruslan A.

    2015-01-01

    Full Text Available The motivation of the presented research is based on the needs for development of new methods and tools for adequate simulation of intelligent electric power systems with active-adaptive electric networks (IES including Flexible Alternating Current Transmission System (FACTS devices. The key requirements for the simulation were formed. The presented analysis of simulation results of IES confirms the need to use a hybrid modelling approach.

  14. Stochastic Electric Power Generation Unit Commitment in Deregulated Power Market Environment

    Directory of Open Access Journals (Sweden)

    F. Gharehdaghi

    2012-03-01

    Full Text Available Utilities participating in deregulated markets observe increasing uncertainty in load (i.e., demand for electric power and prices for fuel and electricity on spot and contract markets. This study proposes a new formulation of the unit commitment problem of electric power generators in a restructured electricity market. Under these conditions, an electric power generation company will have the option to buy or sell from a power pool in addition to producing electricity on its own. The unit commitment problem is expressed as a stochastic optimization problem in which the objective is to maximize expected profits and the decisions are required to meet the standard operating constraints. Under the assumption of competitive market and price taking, it is depicted that the unit commitment schedule for a collection of N generation units can be solved by considering each unit separately. The volatility of the spot market price of electricity is represented by a stochastic model. This paper uses probabilistic dynamic programming to solve the stochastic optimization problem pertaining to unit commitment. It is shown that for a market of 150 units the proposed unit commitment can be accurately solved in a reasonable time by using the normal, Edgeworth, or Monte Carlo approximation methods.

  15. The evolution and main determinants of productivity in Brazilian electricity distribution 1998-2005. An empirical analysis

    Energy Technology Data Exchange (ETDEWEB)

    Ramos-Real, Francisco Javier [Fac. CC. Economicas y Empresariales e IUDR - Universidad de La Laguna (ULL), Programa de investigacion Energia y Cambio Climatico Fedea-Abengoa (Spain); Tovar, Beatriz [Dpto. de Analisis Economico Aplicado y EIT - Universidad las Palmas de Gran Canaria (Spain); Iootty, Mariana [UFRRJ Universidade Federal Rural do Rio de Janeiro, Rio de Janeiro (Brazil); De Almeida, Edmar Fagundes; Pinto, Helder Queiroz Jr. [IE-UFRJ Instituto de Economia - Universidade Federal do Rio de Janeiro, Rio de Janeiro (Brazil)

    2009-03-15

    This paper estimates changes in the productivity of the Brazilian electricity distribution sector using Data Envelopment Analysis (DEA) on a panel of 18 firms from 1998 to 2005. The study decomposes the productivity change of these distribution firms in terms of technical efficiency, scale-efficiency and technical progress. This exercise aims to help the understanding of the main determinants of the evolution of productivity, focusing its relationship with the restructuring process implemented in the 1990s. TFP index records a yearly positive growth rate of 1.3% in the whole period under analysis for all firms. Technical change was the main component behind this evolution, with an average growth of 2.1% per year, while technical efficiency presented a yearly negative performance of - 0.8%. The results prove that, in general terms, the incentives generated in the reform process do not seem to have led the firms to behave in a more efficient manner. (author)

  16. Innovation Networks: the Contribution of Partnerships to Innovative Performance of Firms in the Brazilian Electrical-Electronics Industry

    Directory of Open Access Journals (Sweden)

    Silvye Ane Massaini

    2015-01-01

    Full Text Available Innovation networks have been identified in the literature as a way to complement firms’ innovative capabilities through collaboration with other partners. To provide empirical evidence for this assertion, this paper investigates the contribution of partners established in innovation networks for innovative performance of firms in the Brazilian electricalelectronics industry. For this purpose, we carried out an exploratory and descriptive survey among 185 companies. The data were analyzed using structural equation modeling (SEM. As the main findings, we observed that the establishment of collaborative relationships with customers, competitors and universities/research institutions can contribute to organizational and process innovation. However, despite obtaining some significant results concerning the contribution of different partners in the network, electrical-electronics industry companies also attach great importance to internal activities to develop their innovations.

  17. Hazards of neoliberalism: delayed electric power restoration after Hurricane Ike.

    Science.gov (United States)

    Miller, Lee M; Antonio, Robert J; Bonanno, Alessandro

    2011-09-01

    This case study explores how neoliberal policies shape the impacts of a natural disaster. We investigate the reactions to major damages to the electric power system and the restoration of power in the wake of Hurricane Ike, which devastated the Houston, Texas, metropolitan area in September 2008. We argue that the neoliberal policy agenda insured a minimalist approach to the crisis and generated dissatisfaction among many residents. The short-term profitability imperative shifted reconstruction costs to consumers, and prevented efforts to upgrade the electric power infrastructure to prepare for future disasters. We illustrate the serious obstacles for disaster mitigation and recovery posed by neoliberal policies that privatize public goods and socialize private costs. Neoliberalism neither addresses the needs of a highly stratified public nor their long-term interests and safety.

  18. Electric power monthly, May 1999, with data for February 1999

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-05-01

    The Electric Power Monthly (EPM) presents monthly electricity statistics for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The purpose of this publication is to provide energy decision makers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. This publication provides monthly statistics at the State, Census division, and US levels for net generation, fossil fuel consumption and stocks, quantity and quality of fossil fuels, cost of fossil fuels, electricity retail sales, associated revenue, and average revenue per kilowatt hour of electricity sold. In addition, data on net generation, fuel consumption, fuel stocks, quantity and cost of fossil fuels are also displayed for the North American Electric Reliability Council (NERC) regions. The EIA publishes statistics in the EPM on net generation by energy source; consumption, stocks, quantity, quality, and cost of fossil fuels; and capability of new generating units by company and plant. 64 tabs.

  19. Electric power monthly: October 1996, with data for July 1996

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-10-01

    The Electric Power Monthly (EPM) presents monthly electricity statistics for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. This publication provides monthly statistics at the State, Census division, and US levels for net generation, fossil fuel consumption and stocks, quantity and quality of fossil fuels, cost of fossil fuels, electricity retail sales, associated revenue, and average revenue per kilowatthour of electricity sold. In addition, data on net generation, fuel consumption, fuel stocks, quantity and cost of fossil fuels are also displayed for the North American Electric Reliability Council (NERC) regions. The EIA publishes statistics in the EPM on net generation by energy source; consumption, stocks, quantity, quality, and cost of fossil fuels; and capability of new generating units by company and plant. This report contains approximately 60 tables.

  20. Historically Large Geomagnetic Storms and Potential Electric Power Grid Impacts

    Science.gov (United States)

    Kappenman, J. G.

    2004-05-01

    While recent work has been done to examine the possible Dst Intensity of historically large geomagnetic storms, the impacts caused to modern day electric power grids from these storms occurs due to rapid rate-of-change of regional geomagnetic fields which in most cases are driven by large ionospheric electrojet current intensifications. These temporally and spatially dynamic disturbance morphologies are not well-characterized by Dst or other broad geomagnetic storm indices. For estimates of storm intensity that correctly scale the threat potential to electric power grids, it is necessary to describe the rate-of-change of geomagnetic field. The rate-of-change of the geomagnetic field (dB/dt usually measured in nT/min) creates at ground level a geoelectric field that causes the flow of geomagnetically-induced currents (GIC) through ground connection points in electric power grids. Therefore in general, the larger the dB/dt, the larger the resulting geo-electric field and GIC in exposed power grid infrastructures and the greater the operational impact these induced currents will have on the power grid. Both extensive modeling analysis and recent operational experience suggests that power grids are becoming more vulnerable to geomagnetic storms as they grow in size and complexity. Also, large power grid blackouts have occurred at relatively low geomagnetic storm intensities. For example, the regional disturbance intensity that triggered the Hydro Quebec collapse during the March 13, 1989 Superstorm only reached an intensity of 479 nT/min. Large numbers of power system impacts in the United States were also observed for intensities that ranged from 300 to 600 nT/min during this storm. Yet both recent and historical data indicate that storms with disturbance levels that range from 2000 nT/min to as much ~5000 nT/min may be possible over extensive regions at latitudes of concern for large continental power grids across North America and Europe. Large GIC have also been

  1. Sharing wind power forecasts in electricity markets: A numerical analysis

    DEFF Research Database (Denmark)

    Exizidis, Lazaros; Pinson, Pierre; Kazempour, Jalal

    2016-01-01

    more informed day-ahead schedules, which reduces the need for balancing resources in real-time operation. This paper numerically evaluates the potential value of sharing forecasts for the whole system in terms of system cost reduction. Besides, its impact on each market player’s profit is analyzed......In an electricity pool with significant share of wind power, all generators including conventional and wind power units are generally scheduled in a day-ahead market based on wind power forecasts. Then, a real-time market is cleared given the updated wind power forecast and fixed day...... flexible resources to the system. In this paper, we address another potential solution based on information sharing in which market players share their own wind power forecasts with others in day-ahead market. This solution may improve the functioning of sequential market-clearing process through making...

  2. Auxetic piezoelectric energy harvesters for increased electric power output

    Science.gov (United States)

    Li, Qiang; Kuang, Yang; Zhu, Meiling

    2017-01-01

    This letter presents a piezoelectric bimorph with auxetic (negative Poisson's ratio) behaviors for increased power output in vibration energy harvesting. The piezoelectric bimorph comprises a 2D auxetic substrate sandwiched between two piezoelectric layers. The auxetic substrate is capable of introducing auxetic behaviors and thus increasing the transverse stress in the piezoelectric layers when the bimorph is subjected to a longitudinal stretching load. As a result, both 31- and 32-modes are simultaneously exploited to generate electric power, leading to an increased power output. The increasing power output principle was theoretically analyzed and verified by finite element (FE) modelling. The FE modelling results showed that the auxetic substrate can increase the transverse stress of a bimorph by 16.7 times. The average power generated by the auxetic bimorph is 2.76 times of that generated by a conventional bimorph.

  3. Impedance-Source Networks for Electric Power Conversion Part I

    DEFF Research Database (Denmark)

    Siwakoti, Yam P.; Peng, Fang Zheng; Blaabjerg, Frede;

    2015-01-01

    Impedance networks cover the entire of electric power conversion from dc (converter, rectifier), ac (inverter), to phase and frequency conversion (ac-ac) in a wide range of applications. Various converter topologies have been reported in the literature to overcome the limitations and problems...... of the traditional voltage source, current source as well as various classical buck-boost, unidirectional, and bidirectional converter topologies. Proper implementation of the impedance-source network with appropriate switching configurations and topologies reduces the number of power conversion stages in the system...... power chain, which may improve the reliability and performance of the power system. The first part of this paper provides a comprehensive review of the various impedance-source-networks-based power converters and discusses the main topologies from an application point of view. This review paper...

  4. SVR-Boosting ensemble model for electricity price forecasting in electric power market

    Institute of Scientific and Technical Information of China (English)

    ZHOU Dian-min; GAO Lin; GUAN Xiao-hong; GAO Feng

    2008-01-01

    A revised support vector regression (SVR) ensemble model based on boosting algorithm (SVR-Boos-ting) is presented in this paper for electricity price forecasting in electric power market. In the light of charac-the forecasting model to inhibit the learning from abnormal data in electricity price sequence. The results from actual data indicate that, compared with the single support vector regression model, the proposed SVR-Boosting ensemble model is able to enhance the stability of the model output remarkably, acquire higher predicting accu-racy, and possess comparatively satisfactory generalization capability.

  5. Storm time equatorial plasma bubble zonal drift reversal due to disturbance Hall electric field over the Brazilian region

    Science.gov (United States)

    Santos, A. M.; Abdu, M. A.; Souza, J. R.; Sobral, J. H. A.; Batista, I. S.; Denardini, C. M.

    2016-06-01

    The dynamics of equatorial ionospheric plasma bubbles over Brazilian sector during two magnetic storm events are investigated in this work. The observations were made at varying phases of magnetic disturbances when the bubble zonal drift velocity was found to reverse westward from its normally eastward velocity. Calculation of the zonal drift based on a realistic low-latitude ionosphere modeled by the Sheffield University Plasmasphere-Ionosphere Model showed on a quantitative basis a clear competition between vertical Hall electric field and disturbance zonal winds on the variations observed in the zonal velocity of the plasma bubble. The Hall electric field arising from enhanced ratio of field line-integrated conductivities, ΣH/ΣP, is most often generated by an increase in the integrated Hall conductivity, arising from enhanced energetic particle precipitation in the South American Magnetic Anomaly region for which evidence is provided from observation of anomalous sporadic E layers over Cachoeira Paulista and Fortaleza. Such sporadic E layers are also by themselves evidence for the development of the Hall electric field that modifies the zonal drift.

  6. Method of electric powertrain matching for battery-powered electric cars

    Science.gov (United States)

    Ning, Guobao; Xiong, Lu; Zhang, Lijun; Yu, Zhuoping

    2013-05-01

    The current match method of electric powertrain still makes use of longitudinal dynamics, which can't realize maximum capacity for on-board energy storage unit and can't reach lowest equivalent fuel consumption as well. Another match method focuses on improving available space considering reasonable layout of vehicle to enlarge rated energy capacity for on-board energy storage unit, which can keep the longitudinal dynamics performance almost unchanged but can't reach lowest fuel consumption. Considering the characteristics of driving motor, method of electric powertrain matching utilizing conventional longitudinal dynamics for driving system and cut-and-try method for energy storage system is proposed for passenger cars converted from traditional ones. Through combining the utilization of vehicle space which contributes to the on-board energy amount, vehicle longitudinal performance requirements, vehicle equivalent fuel consumption level, passive safety requirements and maximum driving range requirement together, a comprehensive optimal match method of electric powertrain for battery-powered electric vehicle is raised. In simulation, the vehicle model and match method is built in Matlab/simulink, and the Environmental Protection Agency (EPA) Urban Dynamometer Driving Schedule (UDDS) is chosen as a test condition. The simulation results show that 2.62% of regenerative energy and 2% of energy storage efficiency are increased relative to the traditional method. The research conclusions provide theoretical and practical solutions for electric powertrain matching for modern battery-powered electric vehicles especially for those converted from traditional ones, and further enhance dynamics of electric vehicles.

  7. Analysis of electrical tree propagation in XLPE power cable insulation

    Energy Technology Data Exchange (ETDEWEB)

    Bao Minghui, E-mail: baominghui@21cn.co [College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan (China); Yin Xiaogen; He Junjia [College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan (China)

    2011-04-01

    Electrical treeing is one of the major breakdown mechanisms for solid dielectrics subjected to high electrical stress. In this paper, the characteristics of electrical tree growth in XLPE samples have been investigated. XLPE samples are obtained from a commercial XLPE power cable, in which electrical trees have been grown from pin to plane in the frequency range of 4000-10,000 Hz, voltage range of 4-10 kV, and the distances between electrodes of 1 and 2 mm. Images of trees and their growing processes were taken by a CCD camera. The fractal dimensions of electric trees were obtained by using a simple box-counting technique. The results show that the tree growth rate and fractal dimension was bigger when the frequency or voltage was higher, or the distance between electrodes was smaller. Contrary to our expectation, it has been found that when the distance between electrodes changed from 1 to 2 mm, the required voltage of the similar electrical trees decreased only 1or 2 kV. In order to evaluate the difficulties of electrical tree propagation in different conditions, a simple energy threshold analysis method has been proposed. The threshold energy, which presents the minimum energy that a charge carrier in the well at the top of the tree should have to make the tree grow, has been computed considering the length of electrical tree, the fractal dimension, and the growth time. The computed results indicate that when one of the three parameters of voltage, frequency, and local electric field increase, the trends of energy threshold can be split into 3 regions.

  8. The changing structure of the electric power industry: An update

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-12-01

    The U. S. electric power industry today is on the road to restructuring a road heretofore uncharted. While parallels can be drawn from similar journeys taken by the airline industry, the telecommunications industry, and, most recently, the natural gas industry, the electric power industry has its own unique set of critical issues that must be resolved along the way. The transition will be from a structure based on a vertically integrated and regulated monopoly to one equipped to function successfully in a competitive market. The long-standing traditional structure of the electric power industry is the result of a complex web of events that have been unfolding for over 100 years. Some of these events had far-reaching and widely publicized effects. Other major events took the form of legislation. Still other events had effects that are less obvious in comparison (e.g., the appearance of technologies such as transformers and steam and gas turbines, the invention of home appliances, the man-made fission of uranium), and it is likely that their significance in the history of the industry has been obscured by the passage of time. Nevertheless, they, too, hold a place in the underpinnings of today`s electric industry structure. The purpose of this report, which is intended for both lay and technical readers, is twofold. First, it is a basic reference document that provides a comprehensive delineation of the electric power industry and its traditional structure, which has been based upon its monopoly status. Second, it describes the industry`s transition to a competitive environment by providing a descriptive analysis of the factors that have contributed to the interest in a competitive market, proposed legislative and regulatory actions, and the steps being taken by the various components of the industry to meet the challenges of adapting to and prevailing in a competitive environment.

  9. Photovoltaic electric power applied to Unmanned Aerial Vehicles (UAV)

    Science.gov (United States)

    Geis, Jack; Arnold, Jack H.

    1994-01-01

    Photovoltaic electric-powered flight is receiving a great deal of attention in the context of the United States' Unmanned Aerial Vehicle (UAV) program. This paper addresses some of the enabling technical areas and their potential solutions. Of particular interest are the long-duration, high-altitude class of UAV's whose mission it is to achieve altitudes between 60,000 and 100,000 feet, and to remain at those altitudes for prolonged periods performing various mapping and surveillance activities. Addressed herein are studies which reveal the need for extremely light-weight and efficient solar cells, high-efficiency electric motor-driven propeller modules, and power management and distribution control elements. Since the potential payloads vary dramatically in their power consumption and duty cycles, a typical load profile has been selected to provide commonality for the propulsion power comparisons. Since missions vary widely with respect to ground coverage requirements, from repeated orbiting over a localized target to long-distance routes over irregular terrain, we have also averaged the power requirements for on-board guidance and control power, as well as ground control and communication link utilization. In the context of the national technology reinvestment program, wherever possible we modeled components and materials which have been qualified for space and defense applications, yet are compatible with civilian UAV activities. These include, but are not limited to, solar cell developments, electric storage technology for diurnal operation, local and ground communications, power management and distribution, and control servo design. And finally, the results of tests conducted by Wright Laboratory on ultralight, highly efficient MOCVD GaAs solar cells purchased from EPI Materials Ltd. (EML) of the UK are presented. These cells were also used for modeling the flight characteristics of UAV aircraft.

  10. Independent Orbiter Assessment (IOA): Analysis of the electrical power distribution and control/electrical power generation subsystem

    Science.gov (United States)

    Patton, Jeff A.

    1986-01-01

    The results of the Independent Orbiter Assessment (IOA) of the Failure Modes and Effects Analysis (FMEA) and Critical Items List (CIL) are presented. The IOA approach features a top-down analysis of the hardware to determine failure modes, criticality, and potential critical items. To preserve independence, this analysis was accomplished without reliance upon the results contained within the NASA FMEA/CIL documentation. This report documents the independent analysis results corresponding to the Orbiter Electrical Power Distribution and Control (EPD and C)/Electrical Power Generation (EPG) hardware. The EPD and C/EPG hardware is required for performing critical functions of cryogenic reactant storage, electrical power generation and product water distribution in the Orbiter. Specifically, the EPD and C/EPG hardware consists of the following components: Power Section Assembly (PSA); Reactant Control Subsystem (RCS); Thermal Control Subsystem (TCS); Water Removal Subsystem (WRS); and Power Reactant Storage and Distribution System (PRSDS). The IOA analysis process utilized available EPD and C/EPG hardware drawings and schematics for defining hardware assemblies, components, and hardware items. Each level of hardware was evaluated and analyzed for possible failure modes and effects. Criticality was assigned based upon the severity of the effect for each failure mode.

  11. Fault Location in Power Electrical Traction Line System

    Directory of Open Access Journals (Sweden)

    Yimin Zhou

    2012-11-01

    Full Text Available In this paper, methods of fault location are discussed in electrical traction single-end direct power supply network systems. Based on the distributed parameter model of the system, the position of the short-circuit fault can be located with the aid of the current and voltage value at the measurement end of the electrical traction line. Furthermore, the influence of the transient resistance, the position of the locomotive, locomotive load for fault location are also discussed. MATLAB simulation tool is used for the simulation experiments. Simulation results are proved the effectiveness of the proposed algorithms.

  12. The Effect of Wind Power on Electricity Prices in Denmark

    DEFF Research Database (Denmark)

    Jonsson, Tryggvi; Madsen, Henrik

    This report is the result of a special course taken by the author at IMM DTU under the guidance of professor Henrik Madsen. The aim of the project is to analyze the influence wind energy has on the electricity spot price in Western Denmark and investigate how information about wind power production...... can be used to model the electricity spot price. Various model types were tried, giving very different performance. Here, only the models that performed best are discussed in order to keep focus on the projects goal....

  13. Market integration of wind power in electricity system balancing

    DEFF Research Database (Denmark)

    Sorknæs, Peter; Andersen, Anders N.; Tang, Jens

    2013-01-01

    In most countries markets for electricity are divided into wholesale markets on which electricity is traded before the operation hour, and real-time balancing markets to handle the deviations from the wholesale trading. So far, wind power has been sold only on the wholesale market and has been...... known to increase the need for balancing. This article analyses whether wind turbines in the future should participate in the balancing markets and thereby play a proactive role. The analysis is based on a real-life test of proactive participation of a wind farm in West Denmark. It is found...

  14. Photovoltaic Power Systems and the National Electrical Code: Suggested Practices

    Energy Technology Data Exchange (ETDEWEB)

    None

    2002-02-01

    This guide provides information on how the National Electrical Code (NEC) applies to photovoltaic systems. The guide is not intended to supplant or replace the NEC; it paraphrases the NEC where it pertains to photovoltaic systems and should be used with the full text of the NEC. Users of this guide should be thoroughly familiar with the NEC and know the engineering principles and hazards associated with electrical and photovoltaic power systems. The information in this guide is the best available at the time of publication and is believed to be technically accurate; it will be updated frequently.

  15. Wind power electric systems modeling, simulation and control

    CERN Document Server

    Rekioua, Djamila

    2014-01-01

    The book helps readers understand key concepts in standalone and grid connected wind energy systems and features analysis into the modeling and optimization of commonly used configurations through the implementation of different control strategies.Utilizing several electrical machinery control approaches, such as vector control and direct torque control 'Wind Power Electric Systems' equips readers with the means to understand, assess and develop their own wind energy systems and to evaluate the performance of such systems.Mathematical models are provided for each system and a corresponding MAT

  16. Photovoltaic power systems and the National Electrical Code: Suggested practices

    Energy Technology Data Exchange (ETDEWEB)

    Wiles, J. [New Mexico State Univ., Las Cruces, NM (United States). Southwest Technology Development Inst.

    1996-12-01

    This guide provides information on how the National Electrical Code (NEC) applies to photovoltaic systems. The guide is not intended to supplant or replace the NEC; it paraphrases the NEC where it pertains to photovoltaic systems and should be used with the full text of the NEC. Users of this guide should be thoroughly familiar with the NEC and know the engineering principles and hazards associated with electrical and photovoltaic power systems. The information in this guide is the best available at the time of publication and is believed to be technically accurate; it will be updated frequently. Application of this information and results obtained are the responsibility of the user.

  17. Lithium Battery Power Delivers Electric Vehicles to Market

    Science.gov (United States)

    2008-01-01

    Hybrid Technologies Inc., a manufacturer and marketer of lithium-ion battery electric vehicles, based in Las Vegas, Nevada, and with research and manufacturing facilities in Mooresville, North Carolina, entered into a Space Act Agreement with Kennedy Space Center to determine the utility of lithium-powered fleet vehicles. NASA contributed engineering expertise for the car's advanced battery management system and tested a fleet of zero-emission vehicles on the Kennedy campus. Hybrid Technologies now offers a series of purpose-built lithium electric vehicles dubbed the LiV series, aimed at the urban and commuter environments.

  18. Advances in Optimizing Weather Driven Electric Power Systems.

    Science.gov (United States)

    Clack, C.; MacDonald, A. E.; Alexander, A.; Dunbar, A. D.; Xie, Y.; Wilczak, J. M.

    2014-12-01

    The importance of weather-driven renewable energies for the United States (and global) energy portfolio is growing. The main perceived problems with weather-driven renewable energies are their intermittent nature, low power density, and high costs. The National Energy with Weather System Simulator (NEWS) is a mathematical optimization tool that allows the construction of weather-driven energy sources that will work in harmony with the needs of the system. For example, it will match the electric load, reduce variability, decrease costs, and abate carbon emissions. One important test run included existing US carbon-free power sources, natural gas power when needed, and a High Voltage Direct Current power transmission network. This study shows that the costs and carbon emissions from an optimally designed national system decrease with geographic size. It shows that with achievable estimates of wind and solar generation costs, that the US could decrease its carbon emissions by up to 80% by the early 2030s, without an increase in electric costs. The key requirement would be a 48 state network of HVDC transmission, creating a national market for electricity not possible in the current AC grid. These results were found without the need for storage. Further, we tested the effect of changing natural gas fuel prices on the optimal configuration of the national electric power system. Another test that was carried out was an extension to global regions. The extension study shows that the same properties found in the US study extend to the most populous regions of the planet. The extra test is a simplified version of the US study, and is where much more research can be carried out. We compare our results to other model results.

  19. 49 CFR 1242.19 - Electric power systems (account XX-19-21).

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 9 2010-10-01 2010-10-01 false Electric power systems (account XX-19-21). 1242.19... Structures § 1242.19 Electric power systems (account XX-19-21). Separate common expenses on basis of common expenses of electric power purchased or produced for motive power (accounts XX-51-68 and XX-52-68)....

  20. Planning Mechanisms for Regional Electric Power Supply System Development

    Directory of Open Access Journals (Sweden)

    Evgeniy Anatolyevich Malyshev

    2015-12-01

    Full Text Available Key problems of the regional electric power supply systems are examined. These problems result from a lack of regulated interaction mechanisms for uniting the different entities’ resources aimed at the realization of investment activities. One of the main problems of the power supply industry is physical and moral aging of both generating and networking equipment. In the article, the necessity of management system formation to control the development of power sector has been proved. The deficiencies of the modern investment procedure in power companies are described. The absence of continuity between the regional and local strategic planning documents and investment planning of a power company has been found out. The possibility to develop a new mechanism for attracting investment has been proposed. The regulation of joint activities to implement the development program for the regional power supply industry has been proposed. The management system to develop the Russian power industry has been proposed. The comparative analysis of generating capacity development mechanisms has been carried out, such as capacity supply agreement (CSA, investment support mechanism (ISM, and long-term power market (LPM. The interaction procedure of the planning of the power supply infrastructure development has been described. The mechanism connecting the state sectoral and regional planning and corporate planning of power supply infrastructure development has been proposed. The regional aspects of industrial policy and its legislative support have been considered. To successfully implement the public-private-partnership (PPP projects, it is necessary to create the effective PPP model within the federal and regional legislation framework; to develop the financial model providing the recoverability of investments; to provide a mutually beneficial cooperation between executive bodies and private investors. The possibility to apply the PPP mechanism for regional

  1. Impedance-Source Networks for Electric Power Conversion Part II

    DEFF Research Database (Denmark)

    Siwakoti, Yam P.; Peng, Fang Zheng; Blaabjerg, Frede

    2015-01-01

    Impedance-source networks cover the entire spectrum of electric power conversion applications (dc-dc, dc-ac, ac-dc, ac-ac) controlled and modulated by different modulation strategies to generate the desired dc or ac voltage and current at the output. A comprehensive review of various impedance......-source-network-based power converters has been covered in a previous paper and main topologies were discussed from an application point of view. Now Part II provides a comprehensive review of the most popular control and modulation strategies for impedance-source network-based power converters/inverters. These methods...... topology at a certain power level, switching frequency and demanded dynamic response....

  2. National Maglev initiative: California line electric utility power system requirements

    Science.gov (United States)

    Save, Phil

    1994-05-01

    The electrical utility power system requirements were determined for a Maglev line from San Diego to San Francisco and Sacramento with a maximum capacity of 12,000 passengers an hour in each direction at a speed of 300 miles per hour, or one train every 30 seconds in each direction. Basically the Maglev line requires one 50-MVA substation every 12.5 miles. The need for new power lines to serve these substations and their voltage levels are based not only on equipment loading criteria but also on limitations due to voltage flicker and harmonics created by the Maglev system. The resulting power system requirements and their costs depend mostly on the geographical area, urban or suburban with 'strong' power systems, or mountains and rural areas with 'weak' power systems. A reliability evaluation indicated that emergency power sources, such as a 10-MW battery at each substation, were not justified if sufficient redundancy is provided in the design of the substations and the power lines serving them. With a cost of $5.6 M per mile, the power system requirements, including the 12-kV DC cables and the inverters along the Maglev line, were found to be the second largest cost component of the Maglev system, after the cost of the guideway system ($9.1 M per mile), out of a total cost of $23 M per mile.

  3. Technical and economic aspects of electric machine industry development with account of electric power development directions

    Directory of Open Access Journals (Sweden)

    V.V. Shevchenko

    2014-04-01

    Full Text Available A critical assessment of the existing views on the world energy development prospects is an integral part of independent policy elaboration in this field for any state. Consideration of prospective power industry development options is a determinative factor in electric machine-building progress as a generation system production industry.

  4. 49 CFR 571.305 - Standard No. 305; Electric-powered vehicles: electrolyte spillage and electrical shock protection.

    Science.gov (United States)

    2010-10-01

    ...: electrolyte spillage and electrical shock protection. 571.305 Section 571.305 Transportation Other Regulations... No. 305; Electric-powered vehicles: electrolyte spillage and electrical shock protection. Link to an... system components into the occupant compartment, and electrical shock. S3 Application. This...

  5. Marginal cost and fare formation in the electric power industry

    Energy Technology Data Exchange (ETDEWEB)

    Ito, Nariyasu; Nakanishi, Yasuo

    1988-01-25

    On the basis of data of the Japanese electric power industry, analysis was made on the correlation between the change of element cost, a factor to determine the marginal cost, and the change in the fare level; on the basis of the pooled data of nine power companies, demand function per industry and livelihood and the corresponding two product cost functions were measured in order to test the null hypothesis of Ramsay for the fare formation. The results are as follows: up to the lst oil crisis, rise of fare was suppressed due to the economy of scale and the improved productivity based on the growth of the demand; since after the crisis, changes in the element cost and changes of fare level showed a parallel move; electricity fare setting for individual types of the demand does not follow the Ramsay principle. (5 figs, 7 tabs, 2 refs)

  6. VOLTTRON: An Agent Execution Platform for the Electric Power System

    Energy Technology Data Exchange (ETDEWEB)

    Akyol, Bora A.; Haack, Jereme N.; Ciraci, Selim; Carpenter, Brandon J.; Vlachopoulou, Maria; Tews, Cody W.

    2012-06-05

    Volttron is an agent execution platform that is engineered for use in the electric power system. Volttron provides resource guarantees for agents and the platform including memory and processor utilization; authentication and authorization services; directory services for agent and resource location; and agent mobility. Unlike most other agent platforms, Volttron does not depend on a single agent authoring language. Instead, we chose to design and implement Volttron as a platform service and framework that is decoupled from the agent execution environment. A prototype implementation of Volttron has been written in Python (using Python v2.7.2) and we have executed agents written in Python and Java and as shell scripts. The intended use of Volttron is in the power distribution system for managing distributed generation, demand-response, and plug-in electric vehicles.

  7. Performance of International Space Station Alpha electric power systems

    Energy Technology Data Exchange (ETDEWEB)

    Hill, R.; Lu, C.Y.; Padhye, V.; Hajela, G.; Hague, L. [Rockwell International, Canoga Park, CA (United States). Rocketdyne Division

    1995-12-31

    The International Space Station Alpha (ISSA) will be an Earth-orbiting laboratory in space. It will house experimental payloads, distribute resource utilities, and support human habitation for conducting research and science experiments in a microgravity environment. Electrical power is a major utility to support successful achievement of the mission goal. The ISSA United States On-Orbit Segment (USOS) Electric Power System (EPS) power generation capability will vary with orbital parameters, natural and induced environment, and hardware aging/replacement throughout the ISSA life. Power capability will be further restricted by various assembly configurations during ISSA buildup, by various flight attitudes, by shadowing on the solar arrays, by EPS operational constraints, such as pointing accuracy, battery charging, as well as operating voltage setpoints, and by ISSA operational constraints either to avoid long-term solar array shadowing from the adjacent solar array or to accommodate ISSA maneuver during proximity operations with other space vehicles, mating, and departing. Design of the ISSA USOS EPS takes into consideration the various equipment degradation modes, operation constraints, and orbital conditions to make it compatible with the environments and to meet power, lifetime, and performance requirements.

  8. Analysis of Electric Power System Using Data Mining Association Rule

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Jun Sub; Kim, Min Soo; Choi, Sang Yule; Kim, Chul Whan; Kim, Ung Mo [Skungkyunkwan University (Korea)

    2001-07-01

    Data Mining is a issue of Database fields. Data mining is discovered optimally interesting rules for user, which are results of specific requirement of user, through past data. Through to analyze and to statical suppose interesting rules, we can prepare future faults of system. In this paper, we present a new way which is discovered and repaired faults of Electric Power system using Data Mining techniques. (author). 15 refs., 4 figs., 1 tab.

  9. The development of multimedia communication system for electric power company

    Energy Technology Data Exchange (ETDEWEB)

    Woo, Hee Gon; Kim, Seong Bok [Korea Electric Power Corp. (KEPCO), Taejon (Korea, Republic of). Research Center

    1995-12-31

    It is a final report of the research project that is a development of PC-LAN based multimedia desktop conference system, which is research on the essential technologies and application and development of multimedia communication services for electric power company. This report is consisted of -Survey and study of the multimedia related technologies, -Multimedia communication protocols and network configurations, and -Design, developments of pilot model, evaluation, and applications of multimedia conference system. (author). 112 refs., 250 figs.

  10. Scoping calculations of power sources for nuclear electric propulsion

    Energy Technology Data Exchange (ETDEWEB)

    Difilippo, F.C. [Oak Ridge National Lab., TN (United States)

    1994-05-01

    This technical memorandum describes models and calculational procedures to fully characterize the nuclear island of power sources for nuclear electric propulsion. Two computer codes were written: one for the gas-cooled NERVA derivative reactor and the other for liquid metal-cooled fuel pin reactors. These codes are going to be interfaced by NASA with the balance of plant in order to making scoping calculations for mission analysis.

  11. Reducing the Vulnerability of Electric Power Grids to Terrorist Attacks

    Energy Technology Data Exchange (ETDEWEB)

    Ross Baldick; Thekla Boutsika; Jin Hur; Manho Joung; Yin Wu; Minqi Zhong

    2009-01-31

    This report describes the development of a cascading outage analyzer that, given an initial disturbance on an electric power system, checks for thermal overloads, under-frequency and over-frequency conditions, and under-voltage conditions that would result in removal of elements from the system. The analyzer simulates the successive tripping of elements due to protective actions until a post-event steady state or a system blackout is reached.

  12. American lifelines alliance efforts to improve electric power transmission reliability

    Science.gov (United States)

    Nishenko, S.P.; Savage, W.U.; Honegger, D.G.; McLane, T.R.; ,

    2002-01-01

    A study was performed on American Lifelines Alliance (ALA) efforts to improve electric power transmission reliability. ALA is a public-private partnership project, with the goal of reducing risks to lifelines from natural hazards and human threat events. The mechanism used by ALA for developing national guidelines for lifeline systems is dependent upon using existing Standards Developing Organizations (SDO) accredited by the American National Standards Institute (ANSI) as means to achieve national consensus.

  13. Electric vehicles to support large wind power penetration in future danish power systems

    DEFF Research Database (Denmark)

    Pillai, Jayakrishnan Radhakrishna; Bak-Jensen, Birgitte; Thøgersen, Paul

    2012-01-01

    and generation. This paper analyses power balancing support services from EVs and the feasible levels of electric vehicle integration possible to provide grid ancillary services in Danish power systems. This evaluation is conducted on typical wind dominated distribution and transmission networks in Denmark...... on low voltage residential networks. Significant amount of EVs could be integrated in local distribution grids with the support of intelligent grid and smart charging strategies.......Electric Vehicles (EVs) could play major role in the future intelligent grids to support a large penetration of renewable energy in Denmark, especially electricity production from wind turbines. The future power systems aims to phase-out big conventional fossil-fueled generators with large number...

  14. Mobile Electric Power Technologies for the Army of the Future: Engines, Power Source, and Electrical Aspects

    Science.gov (United States)

    1988-01-01

    developed across the beta"-alumina barrier forces electrons to flow to the porous electrode surface through the load , producing electrical work...Engines Not Generally Available on a Commercial Basis 72 Steady- Flow Combustion Engines Capable of Burning JP-8 75 Direct Energy Conversion 77 Nuclear...off thyristor HAEMP High altitude electromagnetic pulse HMMWV High Mobility Multipurpose Wheeled Vehicle xv HVDC High-voltage direct current IC

  15. Credence goods and market power: an econometric study on the Brazilian pharmaceutical industry

    Directory of Open Access Journals (Sweden)

    Eduardo P. S. Fiuza

    2003-12-01

    Full Text Available Bearing in mind the market failures pointed out by the economic literature and following the international empirical evidence, and based on original micro data of the Brazilian pharmaceutical industry in the late 1990s, this article attempts to relate empirically drug prices in Brazil to some explaining variables. We find that, similarly to previous U.S. estimations, leading branded drugs accommodated share growth of the followers, turning towards a more inelastic market segment and raising their prices. On followers, in turn, a fall of the concentration index in a market had ambiguous effects: if due to reduced leader power, followers raised their relative prices; if due to a tougher competition within the fringe, their relative prices tended to go down.No presente artigo procuramos, tendo em mente as imperfeições de mercado apontadas pela literatura e pela experiência internacional, e com base em dados originais da indústria farmacêutica, relacionar empiricamente o preço de medicamentos no Brasil com algumas variáveis explicativas. Encontramos que, consoante com estimações anteriores da experiência norte-americana, os medicamentos líderes no Brasil, antes da lei que instituiu o medicamento genérico, acomodavam o avanço de produtos similares (do mesmo princípio ativo, porém sem o teste de bioequivalência e se recolhiam a segmentos inelásticos do mercado, elevando seus preços. Os similares, ao contrário, ao perderem mercado, reduziam seus preços em relação ao líder, de modo que uma redução no índice de concentração do mercado total de um princípio ativo tem efeitos ambíguos sobre seus preços, dependendo se a causa é uma queda da participação do líder ou um rearranjo dentre os seguidores.

  16. Soft-Fault Detection Technologies Developed for Electrical Power Systems

    Science.gov (United States)

    Button, Robert M.

    2004-01-01

    The NASA Glenn Research Center, partner universities, and defense contractors are working to develop intelligent power management and distribution (PMAD) technologies for future spacecraft and launch vehicles. The goals are to provide higher performance (efficiency, transient response, and stability), higher fault tolerance, and higher reliability through the application of digital control and communication technologies. It is also expected that these technologies will eventually reduce the design, development, manufacturing, and integration costs for large, electrical power systems for space vehicles. The main focus of this research has been to incorporate digital control, communications, and intelligent algorithms into power electronic devices such as direct-current to direct-current (dc-dc) converters and protective switchgear. These technologies, in turn, will enable revolutionary changes in the way electrical power systems are designed, developed, configured, and integrated in aerospace vehicles and satellites. Initial successes in integrating modern, digital controllers have proven that transient response performance can be improved using advanced nonlinear control algorithms. One technology being developed includes the detection of "soft faults," those not typically covered by current systems in use today. Soft faults include arcing faults, corona discharge faults, and undetected leakage currents. Using digital control and advanced signal analysis algorithms, we have shown that it is possible to reliably detect arcing faults in high-voltage dc power distribution systems (see the preceding photograph). Another research effort has shown that low-level leakage faults and cable degradation can be detected by analyzing power system parameters over time. This additional fault detection capability will result in higher reliability for long-lived power systems such as reusable launch vehicles and space exploration missions.

  17. Using Geothermal Electric Power to Reduce Carbon Footprint

    Science.gov (United States)

    Crombie, George W.

    Human activities, including the burning of fossil fuels, increase carbon dioxide levels, which contributes to global warming. The research problem of the current study examined if geothermal electric power could adequately replace fossil fuel by 2050, thus reducing the emissions of carbon dioxide while avoiding potential problems with expanding nuclear generation. The purpose of this experimental research was to explore under what funding and business conditions geothermal power could be exploited to replace fossil fuels, chiefly coal. Complex systems theory, along with network theory, provided the theoretical foundation for the study. Research hypotheses focused on parameters, such as funding level, exploration type, and interfaces with the existing power grid that will bring the United States closest to the goal of phasing out fossil based power by 2050. The research was conducted by means of computer simulations, using agent-based modeling, wherein data were generated and analyzed. The simulations incorporated key information about the location of geothermal resources, exploitation methods, transmission grid limits and enhancements, and demand centers and growth. The simulation suggested that rapid and aggressive deployment of geothermal power plants in high potential areas, combined with a phase out of coal and nuclear plants, would produce minimal disruptions in the supply of electrical power in the United States. The implications for social change include reduced risk of global warming for all humans on the planet, reduced pollution due to reduction or elimination of coal and nuclear power, increased stability in energy supply and prices in the United States, and increased employment of United States citizens in jobs related to domestic energy production.

  18. The universalization of the electric power services and the isolated communities of Amazon region, Brazil; A universalizacao dos servicos de energia eletrica e as comunidades isoladas da amazonia

    Energy Technology Data Exchange (ETDEWEB)

    Andrade, Celia Salama de [Universidade Federal do Rio de Janeiro (PPE/COPPE/UFRJ), RJ (Brazil). Coordenacao dos Programas de Pos-Graduacao de Engenharia. Programa de Planejamento Energetico

    2010-07-01

    This paper presents the main characteristics of non interconnected systems which composes the Brazilian Electric Power System, the difficulties of rural electrification at the Country, specially in the Amazon region, and the obstacles of Amazon state, Brazil, for transportation energy power to hinterland. The results of Program Light for All are also synthesized in this document, present the profile of communities yet not attended by the Program and will be reached up to the end of the year 2010, at the finalization of the Program.

  19. The french electric power evaluation 2005; Le bilan electrique francais 2005

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2006-07-01

    This document takes stock on the french electric power situation for the year 2005. It provides information on the consumption the trade, the production, the french market and the RTE (Electric power transport network) infrastructure. (A.L.B.)

  20. Solar Electric Propulsion (SEP) Tug Power System Considerations

    Science.gov (United States)

    Kerslake, Thomas W.; Bury, Kristen M.; Hojinicki, Jeffrey S.; Sajdak, Adam M.; Scheiddegger, Robert J.

    2011-01-01

    Solar electric propulsion (SEP) technology is truly at the "intersection of commercial and military space" as well as the intersection of NASA robotic and human space missions. Building on the use of SEP for geosynchronous spacecraft station keeping, there are numerous potential commercial and military mission applications for SEP stages operating in Earth orbit. At NASA, there is a resurgence of interest in robotic SEP missions for Earth orbit raising applications, 1-AU class heliocentric missions to near Earth objects (NEOs) and SEP spacecraft technology demonstrations. Beyond these nearer term robotic missions, potential future human space flight missions to NEOs with high-power SEP stages are being considered. To enhance or enable this broad class of commercial, military and NASA missions, advancements in the power level and performance of SEP technologies are needed. This presentation will focus on design considerations for the solar photovoltaic array (PVA) and electric power system (EPS) vital to the design and operation of an SEP stage. The engineering and programmatic pros and cons of various PVA and EPS technologies and architectures will be discussed in the context of operating voltage and power levels. The impacts of PVA and EPS design options on the remaining SEP stage subsystem designs, as well as spacecraft operations, will also be discussed.

  1. High output power electric motors with bulk HTS elements

    Science.gov (United States)

    Kovalev, L. K.; Ilushin, K. V.; Kovalev, K. L.; Penkin, V. T.; Poltavets, V. N.; Koneev, S. M.-A.; Akimov, I. I.; Gawalek, W.; Oswald, B.; Krabbes, G.

    2003-04-01

    New types of electric machines with the rotors containing bulk HTS (YBCO and Bi-Ag) elements are presented. Different schematics of hysteresis, reluctance, “trapped field” and composed synchronous HTS machines are discussed. The two-dimensional mathematical models describing the processes in such types of HTS machines were developed on the basis of the theoretical analysis of the electrodynamic and hysteresis processes in the single-domain and polycrystal YBCO ceramic samples and plate shape Bi-Ag elements. The test results of the series of hysteresis, reluctance, “trapped field” and composed with permanent magnets HTS motors with output power rating 0.1-18 kW and current frequency 50 and 400 Hz are given. These results show that in the media of liquid nitrogen the specific output power per one weight unit of HTS motors is 4-7 times better than for conventional electric machines. Comparison of the theoretical and experimental characteristics of the developed HTS motors show that they are in good agreement. The test results for liquid nitrogen cryogenic pump system with hysteresis 500 W HTS motor are discussed. The designs and first test results of HTS motor operating in the media of liquid nitrogen with output power 100 kW and power factor more than 0.8 are given. Future development and applications of new types of HTS motors for aerospace technology, on-land industry and transport systems are discussed.

  2. Potential for deserts to supply reliable renewable electric power

    Science.gov (United States)

    Labordena, Mercè; Lilliestam, Johan

    2015-04-01

    To avoid dangerous climate change, the electricity systems must be decarbonized by mid-century. The world has sufficient renewable electricity resources for complete power sector decarbonization, but an expansion of renewables poses several challenges for the electricity systems. First, wind and solar PV power are intermittent and supply-controlled, making it difficult to securely integrate this fluctuating generation into the power systems. Consequently, power sources that are both renewable and dispatchable, such as biomass, hydro and concentrating solar power (CSP), are particularly important. Second, renewable power has a low power density and needs vast areas of land, which is problematic both due to cost reasons and due to land-use conflicts, in particular with agriculture. Renewable and dispatchable technologies that can be built in sparsely inhabited regions or on land with low competition with agriculture would therefore be especially valuable; this land-use competition greatly limits the potential for hydro and biomass electricity. Deserts, however, are precisely such low-competition land, and are at the same time the most suited places for CSP generation, but this option would necessitate long transmission lines from remote places in the deserts to the demand centers such as big cities. We therefore study the potential for fleets of CSP plants in the large deserts of the world to produce reliable and reasonable-cost renewable electricity for regions with high and/or rapidly increasing electricity demand and with a desert within or close to its borders. The regions in focus here are the European Union, North Africa and the Middle East, China and Australia. We conduct the analysis in three steps. First, we identify the best solar generation areas in the selected deserts using geographic information systems (GIS), and applying restrictions to minimize impact on biodiversity, soils, human heath, and land-use and land-cover change. Second, we identify

  3. Electric energy production by particle thermionic-thermoelectric power generators

    Science.gov (United States)

    Oettinger, P. E.

    1980-01-01

    Thermionic-thermoelectric power generators, composed of a thin layer of porous, low work function material separating a heated emitter electrode and a cooler collector electrode, have extremely large Seebeck coefficients of over 2 mV/K and can provide significant output power. Preliminary experiments with 20-micron thick (Ba Sr Ca)O coatings, limited by evaporative loss to temperatures below 1400 K, have yielded short circuit current densities of 500 mA/sq cm and power densities of 60 mW/ sq cm. Substantially more output is expected with cesium-coated refractory oxide particle coatings operating at higher temperatures. Practical generators will have thermal-to-electrical efficiencies of 10 to 20%. Further increases can be gained by cascading these high-temperature devices with lower temperature conventional thermoelectric generators.

  4. Precision power generator system for a single-wire electric power transmission

    OpenAIRE

    2014-01-01

    The article contains an example of the construction of precision oscillator operating frequency based of the chip AD 9832 company Аnalog Devices that implements the method of direct digital synthesis (DDS) and high-frequency power circuit for a system of single-wire electric power transmission which supports functions digital installations of the operating frequency.The use of DDS frequency synthesizer allows you to build a precision oscillator with a unique digital certainty: the signal gene...

  5. Neutron effects on the electrical and switching characteristics of NPN bipolar power transistors

    Science.gov (United States)

    Frasca, Albert J.; Schwarze, Gene E.

    1988-01-01

    The use of nuclear reactors to generate electrical power for future space missions will require the electrical components used in the power conditioning, control, and transmission subsystem to operate in the associated radiation environments. An initial assessment of neutron irradiation on the electrical and switching characteristics of commercial high power NPN bipolar transistors was investigated. The results clearly show the detrimental effects caused by neutron irradiation on the electrical and switching characteristics of the NPN bipolar power transistor.

  6. 76 FR 11436 - Application to Export Electric Energy; Ontario Power Generation

    Science.gov (United States)

    2011-03-02

    ... Application to Export Electric Energy; Ontario Power Generation AGENCY: Office of Electricity Delivery and... applied to renew its authority to transmit electric energy from the United States to Canada pursuant to... authorized OPG to transmit electric energy from the United States to Canada as a power marketer for a...

  7. 75 FR 80482 - Application To Export Electric Energy; TransCanada Power Marketing Ltd.

    Science.gov (United States)

    2010-12-22

    ... Application To Export Electric Energy; TransCanada Power Marketing Ltd. AGENCY: Office of Electricity Delivery.... (TCPM) has applied to renew its authority to transmit electric energy from the United States to Canada..., which authorized TCPM to transmit electric energy from the United States to Canada as a power...

  8. 76 FR 19069 - Application to Export Electric Energy; Cargill Power Markets, LLC

    Science.gov (United States)

    2011-04-06

    ... Application to Export Electric Energy; Cargill Power Markets, LLC AGENCY: Office of Electricity Delivery and... applied to renew its authority to transmit electric energy from the United States to Canada pursuant to... authorized CPM to transmit electric energy from the United States to Canada as a power marketer for a...

  9. 77 FR 39689 - Application To Export Electric Energy; Dynasty Power, Inc.

    Science.gov (United States)

    2012-07-05

    ...] [FR Doc No: 2012-16465] DEPARTMENT OF ENERGY [OE Docket No. EA-385] Application To Export Electric... electric energy from the United States to Canada pursuant to section 202(e) of the Federal Power Act (FPA... of electricity to Canada as requested. The electric energy that Dynasty Power proposes to export...

  10. 75 FR 6369 - Application To Export Electric Energy; Aquilon Power Ltd.

    Science.gov (United States)

    2010-02-09

    ... Application To Export Electric Energy; Aquilon Power Ltd. AGENCY: Office of Electricity Delivery and Energy... authority to transmit electric energy from the United States to Canada pursuant to section 202(e) of the... electric energy from the United States to Canada as a power marketer using international...

  11. 77 FR 11515 - Application To Export Electric Energy; Pilot Power Group, Inc.

    Science.gov (United States)

    2012-02-27

    ... Application To Export Electric Energy; Pilot Power Group, Inc. AGENCY: Office of Electricity Delivery and...) has applied for authority to transmit electric energy from the United States to Mexico pursuant to... Power for authority to transmit electric energy from the United States to Mexico for five years as...

  12. Communications and control for electric power systems: Final report

    Energy Technology Data Exchange (ETDEWEB)

    Kirkham, H.

    1998-04-01

    This report is a summary of some of the work done on the Communications and Control project, with particular emphasis on the achievements during the years 1986--1996. During those years, the project moved away from concern with dispersed storage and generation and its impact on power system operation (the team was responsible for studies in this area, and for making a power system simulator that included DSG), and became involved in more concrete work aimed at applying high-tech solutions to problems of power system communications and control. This report covers work done at JPL on the following topics: (1) the measurement of electric and magnetic fields, both ac and dc; (2) the use of optical power to supply low-power electronics; (3) the design of a fault-tolerant communication system designed for distribution automation; and (4) a digital phase locked loop that allows the use of low-power transmitting electronics to recreate a good-quality signal at the receiver. In a report of this kind, only the results and highlights of the work are described.

  13. Report of the 2. Seminar on economic and financial planning of the electric sector; Relatorio do 2. Seminario de planejamento economico financeiro do setor eletrico

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1994-12-31

    This book collects working presented at the second seminar of financial and economic planning for the Brazilian electric power system. The main issues discussed are the new economic order and the consequences in the Brazilian electric power system in what concerns pricing, planning and energetic sources

  14. Electric Power Generation from Low to Intermediate Temperature Resourcces

    Energy Technology Data Exchange (ETDEWEB)

    Gosnold, William [Univ. of North Dakota, Grand Forks, ND (United States); Mann, Michael [Chemical Engineering Department, University of North Dakota, Grand Forks, ND (United States); Salehfar, Hossein [Univ. of North Dakota, Grand Forks, ND (United States)

    2017-03-20

    The UND-CLR Binary Geothermal Power Plant was a collaborative effort of the U.S. Department of Energy (DOE), Continental Resources, Inc. (CRL), Slope Electric Cooperative (SEC), Access Energy, LLC (AE), Basin Electric Cooperative (BEC), Olson Construction, the North Dakota Industrial Commission Renewable Energy Council (NDIC-REC), the North Dakota Department of Commerce Centers of Excellence Program (NDDC-COE), and the University of North Dakota (UND). The primary objective of project was to demonstrate/test the technical and economic feasibility of generating electricity from non-conventional, low-temperature (90 ºC to 150 °C) geothermal resources using binary technology. CLR provided the access to 98 ºC water flowing at 51 l s-1 at the Davis Water Injection Plan in Bowman County, ND. Funding for the project was from DOE –GTO, NDIC-REC, NDD-COE, and BEC. Logistics, on-site construction, and power grid access were facilitated by Slope Electric Cooperative and Olson Construction. Access Energy supplied prototype organic Rankine Cycle engines for the project. The potential power output from this project is 250 kW at a cost of $3,400 per kW. A key factor in the economics of this project is a significant advance in binary power technology by Access Energy, LLC. Other commercially available ORC engines have efficiencies 8 to 10 percent and produce 50 to 250 kW per unit. The AE ORC units are designed to generate 125 kW with efficiencies up to 14 percent and they can be installed in arrays of tens of units to produce several MW of power where geothermal waters are available. This demonstration project is small but the potential for large-scale development in deeper, hotter formations is promising. The UND team’s analysis of the entire Williston Basin using data on porosity, formation thicknesses, and fluid temperatures reveals that 4.0 x 1019 Joules of energy is available and that 1.36 x 109 MWh of power could be produced using ORC binary power plants. Much of the

  15. 77 FR 11515 - Application to Export Electric Energy; NRG Power Marketing LLC

    Science.gov (United States)

    2012-02-27

    ... Application to Export Electric Energy; NRG Power Marketing LLC AGENCY: Office of Electricity Delivery and Energy Reliability, DOE. ] ACTION: Notice of application. SUMMARY: NRG Power Marketing LLC (NRGPML) has... would be surplus energy purchased from electric utilities and Federal power marketing agencies...

  16. Space vehicle electrical power processing distribution and control study. Volume 1: Summary

    Science.gov (United States)

    Krausz, A.

    1972-01-01

    A concept for the processing, distribution, and control of electric power for manned space vehicles and future aircraft is presented. Emphasis is placed on the requirements of the space station and space shuttle configurations. The systems involved are referred to as the processing distribution and control system (PDCS), electrical power system (EPS), and electric power generation system (EPGS).

  17. A Survey of Wireless Communications for the Electric Power System

    Energy Technology Data Exchange (ETDEWEB)

    Akyol, Bora A.; Kirkham, Harold; Clements, Samuel L.; Hadley, Mark D.

    2010-01-27

    A key mission of the U.S. Department of Energy (DOE) Office of Electricity Delivery and Energy Reliability (OE) is to enhance the security and reliability of the nation’s energy infrastructure. Improving the security of control systems, which enable the automated control of our energy production and distribution, is critical for protecting the energy infrastructure and the integral function that it serves in our lives. The DOE-OE Control Systems Security Program provides research and development to help the energy industry actively pursue advanced security solutions for control systems. The focus of this report is analyzing how, where, and what type of wireless communications are suitable for deployment in the electric power system and to inform implementers of their options in wireless technologies. The discussions in this report are applicable to enhancing both the communications infrastructure of the current electric power system and new smart system deployments. The work described in this report includes a survey of the following wireless technologies: • IEEE 802.16 d and e (WiMAX) • IEEE 802.11 (Wi-Fi) family of a, b, g, n, and s • Wireless sensor protocols that use parts of the IEEE 802.15.4 specification: WirelessHART, International Society of Automation (ISA) 100.11a, and Zigbee • The 2, 3, and 4 generation (G )cellular technologies of GPRS/EDGE/1xRTT, HSPA/EVDO, and Long-Term Evolution (LTE)/HSPA+UMTS.

  18. Assessment of novel power generation systems for the biomass industry

    OpenAIRE

    Codeceira Neto, Alcides

    1999-01-01

    The objective of this programme of research is to produce a method for assessing and optimising the performance of advanced gas turbine power plants for electricity generation within the Brazilian electric sector. With the privatisation of the Brazilian electric sector, interest has been given to the thermal plants and studies have been carried out along with the use of other alternative fuels rather than fossil fuels. Biomass is a fuel of increasing interest for power gener...

  19. Influences on dispatch of power generation when introducing electric drive vehicles in an Irish power system year 2020

    DEFF Research Database (Denmark)

    Juul, Nina; Mullane, Alan; Meibom, Peter

    Increased focus on global warming and CO2 emissions imply increased focus on the energy system, consisting of the heat, power, and transport systems. Solutions for the heat and power system are increasing penetrations of renewable heat and power generation plants such as wind power and biomass heat...... plants. For the future transport system, electric drive vehicles are expected to be one of the solutions. Introducing different electric drive vehicle penetrations in a power system with a large amount of wind power, changes the usage of the predefined power system. This work presents investigations...... of different charging regimes’ influence of the power dispatch in the Irish power system. Analyses show an overall cost decrease and CO2 emission increase in the heat and power system with the introduction of electric drive vehicles. Furthermore, increased intelligence in the electric drive vehicle charging...

  20. CAPM (Capital Asset Pricing Model) and regulation in Brazilian electric distribution sector; CAPM (Capital Asset Pricing Model) e regulacao no segmento de distribuicao do setor eletrico brasileiro

    Energy Technology Data Exchange (ETDEWEB)

    Pinto, Rinaldo Caldeira; Parente, Virginia [Universidade de Sao Paulo (USP), SP (Brazil)], emails: rinaldo@iee.usp.br, vparente@iee.usp.br

    2010-07-01

    The aim of this paper is to analyse the use of Capital Asset Pricing Model (CAPM) Beta in the Brazilian electric distribution sector tariffs review. The betas applied by the Regulatory Agency are defined using data from the American, English and Brazilian markets. These betas will then be compared to the betas obtained in the domestic market. The betas were directly obtained from an economic-financial databank largely employed by the market. The sample is composed of companies' shares, priced at Sao Paulo Stock Market. Their main activity is the distribution of electric energy between July 2002 and July 2007. The results of mean betas obtained for the distribution segment, with values close to the ones applied by the regulatory agency for the cycle of tariff reviews between 2007-2010. (author)

  1. Use of Geothermal Energy for Electric Power Generation

    Energy Technology Data Exchange (ETDEWEB)

    Mashaw, John M.; Prichett, III, Wilson (eds.)

    1980-10-23

    The National Rural Electric Cooperative Association and its 1,000 member systems are involved in the research, development and utilization of many different types of supplemental and alternative energy resources. We share a strong commitment to the wise and efficient use of this country's energy resources as the ultimate answer to our national prosperity and economic growth. WRECA is indebted to the United States Department of Energy for funding the NRECA/DOE Geothermal Workshop which was held in San Diego, California in October, 1980. We would also like to express our gratitude to each of the workshop speakers who gave of their time, talent and experience so that rural electric systems in the Western U. S. might gain a clearer understanding of the geothermal potential in their individual service areas. The participants were also presented with practical, expert opinion regarding the financial and technical considerations of using geothermal energy for electric power production. The organizers of this conference and all of those involved in planning this forum are hopeful that it will serve as an impetus toward the full utilization of geothermal energy as an important ingredient in a more energy self-sufficient nation. The ultimate consumer of the rural electric system, the member-owner, expects the kind of leadership that solves the energy problems of tomorrow by fully utilizing the resources at our disposal today.

  2. On load flow control in electric power systems

    Energy Technology Data Exchange (ETDEWEB)

    Herbig, Arnim

    2000-01-01

    This dissertation deals with the control of active power flow, or load flow in electric power systems. During the last few years, interest in the possibilities to control the active power flows in transmission systems has increased significantly. There is a number of reasons for this, coming both from the application side - that is, from power system operations - and from the technological side. where advances in power electronics and related technologies have made new system components available. Load flow control is by nature a multi-input multi-output problem, since any change of load flow in one line will be complemented by changes in other lines. Strong cross-coupling between controllable components is to be expected, and the possibility of adverse interactions between these components cannot be rejected straightaway. Interactions with dynamic phenomena in the power system are also a source of concern. Three controllable components are investigated in this thesis, namely the controlled series capacitor (CSC), the phase angle regulator (PAR), and the unified power flow controller (UPFC). Properties and characteristics of these devices axe investigated and discussed. A simple control strategy is proposed. This strategy is then analyzed extensively. Mathematical methods and physical knowledge about the pertinent phenomena are combined, and it is shown that this control strategy can be used for a fairly general class of devices. Computer simulations of the controlled system provide insight into the system behavior in a system of reasonable size. The robustness and stability of the control system are discussed as are its limits. Further, the behavior of the control strategy in a system where the modeling allows for dynamic phenomena are investigated with computer simulations. It is discussed under which circumstances the control action has beneficial or detrimental effect on the system dynamics. Finally, a graphical approach for analyzing the effect of controllers

  3. Transatlantic migrations and globalization: Brazilians in Portuguese lands and the power of social networks

    Directory of Open Access Journals (Sweden)

    Beatriz PADILLA

    2010-09-01

    Full Text Available The aim of this paper is to contextualised Latin American migration to Portugal, which presents features of different migratory systems (Iberian, Latin American and Lusophone using the case of Brazilians as example. The study case reveals, on one hand, the complex relations between Brazil and Portugal as a consequence of the old colonial past and several waves of migration in both directions, and friendship and blood ties from past migrations; and on the other hand, the influence and modus operandi of migrants’ social networks, by using a multisited ethnography at origin and destination. The analysis of the fluxes and their insertion in the labour markets and the analysis of the social networks allow approaching the double context of migrations, illustrating its role in the integration of Brazilians in the host society. The focus on the social networks includes several aspects such as their informality/formality, gender differences, and ways of solidarity and reciprocity.

  4. Brazilian Democracy and the Power of “Old” Theories of Party Competition

    Directory of Open Access Journals (Sweden)

    Fabiano Santos

    2008-06-01

    Full Text Available Brazilian politics has been usually analyzed as a case full of pathologies by scholars and political journalists alike. Fragmentation, volatility, clientelism and inefficiency have become bywords for describing the performance of Brazil’s political institutions. As a counter to this view, this work argues that the country’s democracy in the post-1988 period presents enough evidence in favor of classical hypotheses about electoral politics in the contemporary worlds, theories that invariably are based on premises of rationality in the behavior of voters and political parties. These theories include the median voter theorem, Duverger’s law on the mechanical and psychological effects of electoral systems, and the model of retrospective voting. The article also contends that the passing of time has contributed to make Brazilian politics more rational and efficient in the mould of older democracies.

  5. Electric Power Demand Forecasting: A Case Study of Lucknow City

    Directory of Open Access Journals (Sweden)

    A.K. Bhardwaj and R.C. Bansal

    2011-03-01

    Full Text Available The study of forecasting identifies the urgent need for special attention in evolving effective energy policies to alleviate an energy famine in the near future. Since power demand is increasing day by day in entire world and it is also one of the fundamental infrastructure input for the development, its prospects and availability sets significant constraints on the socio-economic growth of every person as well as every country. A care full long-term power plan is imperative for the development of power sector. This need assumes more importance in the state of Uttar Pradesh where the demand for electrical energy is growing at a rapid pace. This study analyses the requirement of electricity with respect to the future population for the major forms of energy in the Lucknow city in Uttar Pradesh state of India. A model consisting of significant key energy indicators have been used for the estimation. Model wherever required refined in the second stage to remove the effect of auto-correlation. The accuracy of the model has been checked using standard statistical techniques and validated against the past data by testing for ‘expost’ forecast accuracy.

  6. Thermal Management and Reliability of Power Electronics and Electric Machines

    Energy Technology Data Exchange (ETDEWEB)

    Narumanchi, Sreekant

    2016-06-13

    Increasing the number of electric-drive vehicles (EDVs) on America's roads has been identified as a strategy with near-term potential for dramatically decreasing the nation's dependence on oil - by the U.S. Department of Energy, the federal cross-agency EV-Everywhere Challenge, and the automotive industry. Mass-market deployment will rely on meeting aggressive technical targets, including improved efficiency and reduced size, weight, and cost. Many of these advances will depend on optimization of thermal management. Effective thermal management is critical to improving the performance and ensuring the reliability of EDVs. Efficient heat removal makes higher power densities and lower operating temperatures possible, and in turn enables cost and size reductions. The National Renewable Energy Laboratory (NREL), along with DOE and industry partners is working to develop cost-effective thermal management solutions to increase device and component power densities. In this presentation, the activities in recent years related to thermal management and reliability of automotive power electronics and electric machines are presented.

  7. Thermal Management and Reliability of Power Electronics and Electric Machines

    Energy Technology Data Exchange (ETDEWEB)

    Narumanchi, Sreekant

    2016-08-03

    Increasing the number of electric-drive vehicles (EDVs) on America's roads has been identified as a strategy with near-term potential for dramatically decreasing the nation's dependence on oil -- by the U.S. Department of Energy, the federal cross-agency EV-Everywhere Challenge, and the automotive industry. Mass-market deployment will rely on meeting aggressive technical targets, including improved efficiency and reduced size, weight, and cost. Many of these advances will depend on optimization of thermal management. Effective thermal management is critical to improving the performance and ensuring the reliability of EDVs. Efficient heat removal makes higher power densities and lower operating temperatures possible, and in turn enables cost and size reductions. The National Renewable Energy Laboratory (NREL), along with DOE and industry partners is working to develop cost-effective thermal management solutions to increase device and component power densities. In this presentation, the activities in recent years related to thermal management and reliability of automotive power electronics and electric machines will be presented.

  8. Thermal Management and Reliability of Power Electronics and Electric Machines

    Energy Technology Data Exchange (ETDEWEB)

    Narumanchi, Sreekant

    2016-09-19

    Increasing the number of electric-drive vehicles (EDVs) on America's roads has been identified as a strategy with near-term potential for dramatically decreasing the nation's dependence on oil - by the U.S. Department of Energy, the federal cross-agency EV-Everywhere Challenge, and the automotive industry. Mass-market deployment will rely on meeting aggressive technical targets, including improved efficiency and reduced size, weight, and cost. Many of these advances will depend on optimization of thermal management. Effective thermal management is critical to improving the performance and ensuring the reliability of EDVs. Efficient heat removal makes higher power densities and lower operating temperatures possible, and in turn enables cost and size reductions. The National Renewable Energy Laboratory (NREL), along with DOE and industry partners is working to develop cost-effective thermal management solutions to increase device and component power densities. In this presentation, the activities in recent years related to thermal management and reliability of automotive power electronics and electric machines are presented.

  9. Power Processing for a Conceptual Project Prometheus Electric Propulsion System

    Science.gov (United States)

    Scina, Joseph E., Jr.; Aulisio, Michael; Gerber, Scott S.; Hewitt, Frank; Miller, Leonard; Elbuluk, Malik; Pinero, Luis R. (Technical Monitor)

    2005-01-01

    NASA has proposed a bold mission to orbit and explore the moons of Jupiter. This mission, known as the Jupiter Icy Moons Orbiter (JIMO), would significantly increase NASA s capability to explore deep space by making use of high power electric propulsion. One electric propulsion option under study for JIMO is an ion propulsion system. An early version of an ion propulsion system was successfully used on NASA's Deep Space 1 mission. One concept for an ion thruster system capable of meeting the current JIMO mission requirement would have individual thrusters that are 16 to 25 kW each and require voltages as high as 8.0 kV. The purpose of this work is to develop power processing schemes for delivering the high voltage power to the spacecraft ion thrusters based upon a three-phase AC distribution system. In addition, a proposed DC-DC converter topology is presented for an ion thruster ancillary supply based upon a DC distribution system. All specifications discussed in this paper are for design convenience and are speculative in nature.

  10. Coproduction of hydrogen and electric power using coal hydrogasification

    Energy Technology Data Exchange (ETDEWEB)

    R. Carapellucci; G. Girardi; G. Marcotullio [DIMEG - University of L' Aquila, L' Aquila (Italy)

    2005-07-01

    A performance investigation on innovative integrated coal gasification power plants for coproducing hydrogen and electric power has been carried out. To this aim, power is generated using a non conventional thermodynamic cycle, with high efficiency and zero emission: it is a semi-closed combined cycle where the syngas fuel is burnt with stoichiometric O{sub 2} and the combustion temperature is moderated by a steam-CO{sub 2} mixture. Two different ways for coal gasification and hydrogen production have been explored: in the first one, a novel coal hydrogasification is adopted, while hydrogen is obtained from syngas through steam reforming and water-gas shift with simultaneous CO{sub 2} fixation by CaO sorbent; in the second one, oxygen-blown gasification is carried out, a high purity hydrogen stream is simply separated from sulphur-free syngas by a pressure swing adsorption unit, and a CO{sub 2}-rich gaseous phase is extracted from condenser, dried and sent to sequestration. A comparative performance analysis shows that coal anaerobic gasification gives very high efficiencies in H{sub 2}-oriented production, while if only electricity is produced oxygen-blown gasification allows competitive performance by easy operation and absence of CO{sub 2} sorbents. 14 refs., 7 figs., 5 tabs.

  11. Use of Local Dynamic Electricity Prices for Indirect Control of DER Power Units

    DEFF Research Database (Denmark)

    Nørgård, Per Bromand; Isleifsson, Fridrik Rafn

    2013-01-01

    electricity prices for indirect control of active power. The local, dynamic electricity prices are realised as dynamic adjustments of the quasi-stationary global power price. The aims of the dynamic price adjustments are to prevent overloading of the grid, to reduce the grid power losses and to regulate...... wind power, solar power, flexible load and electrical storage. The local power price generation is based on the actual Nord Pool DK2 Spot prices on hourly basis as the quasi-stationary global electricity price, and the local SYSLAB's power exchange with the national grid as basis for the dynamic price...

  12. Customized electric power storage device for inclusion in a collective microgrid

    Science.gov (United States)

    Robinett, III, Rush D.; Wilson, David G.; Goldsmith, Steven Y.

    2016-02-16

    An electric power storage device is described herein, wherein the electric power storage device is included in a microgrid. The electric power storage device has at least one of a charge rate, a discharge rate, or a power retention capacity that has been customized for a collective microgrid. The collective microgrid includes at least two connected microgrids. The at least one of the charge rate, the discharge rate, or the power retention capacity of the electric power storage device is computed based at least in part upon specified power source parameters in the at least two connected microgrids and specified load parameters in the at least two connected microgrids.

  13. Electric Vehicles for Improved Operation of Power Systems with High Wind Power Penetration

    DEFF Research Database (Denmark)

    Larsen, Esben; Chandrashekhara, Divya K; Østergaard, Jacob

    2008-01-01

    In a power system with a high share of wind energy the wind fluctuation causes a variation in the power generation, which must be compensated from other sources. The situation in Denmark with a penetration of more than 20% wind in yearly average is presented. The introduction of electric drive...... vehicles (EDV) as flexible loads can improve the system operation. Bidirectional power exchange through batteries (vehicle to grid) can be seen as a storage system in the grid. An analysis of possible economical incentives for the vehicle owners will be shown. By control of EDV charging through a price...

  14. Agent Based Control of Electric Power Systems with Distributed Generation

    DEFF Research Database (Denmark)

    Saleem, Arshad

    . The methodology consists of suggestions for redesign of control architecture, a prototype for a software platform which facilitates implementation of multiagent control and results from case studies of specic scenarios. The work also contributes to agent based control with an approach of model based agents....... This thesis focuses on making a systematic evaluation of using intelligent software agent technology for control of electric power systems with high penetration of distributed generation. The thesis is based upon a requirement driven approach. It starts with investigating new trends and challenges in Electric...... agents. It suggests a multiagent based exible control architecture (subgrid control) suitable for the implementation of the innovative control concepts. This subgrid control architecture is tested on a novel distributed software platform which has been developed to design, test and evaluate distributed...

  15. Determination of Technological Electric Power Consumption for Its Transportation while Using Block-Stations

    Directory of Open Access Journals (Sweden)

    V. V. Pavlovets

    2010-01-01

    Full Text Available The paper proposes a method for calculation of the technological electric power consumption for its transportation in the elements of power network while using block-stations under conditions of differently-directed electric power transfer.The calculation of technological electric power consumption for its transportation can be applied while supplying several consumers with one element of power network simultaneously with block-station operation. 

  16. An Integrated Design approach to Power Systems: from Power Flows to Electricity Markets

    Science.gov (United States)

    Bose, Subhonmesh

    Power system is at the brink of change. Engineering needs, economic forces and environmental factors are the main drivers of this change. The vision is to build a smart electrical grid and a smarter market mechanism around it to fulfill mandates on clean energy. Looking at engineering and economic issues in isolation is no longer an option today; it needs an integrated design approach. In this thesis, I shall revisit some of the classical questions on the engineering operation of power systems that deals with the nonconvexity of power flow equations. Then I shall explore some issues of the interaction of these power flow equations on the electricity markets to address the fundamental issue of market power in a deregulated market environment. Finally, motivated by the emergence of new storage technologies, I present an interesting result on the investment decision problem of placing storage over a power network. The goal of this study is to demonstrate that modern optimization and game theory can provide unique insights into this complex system. Some of the ideas carry over to applications beyond power systems.

  17. Electrical Power Conversion of a River and Tidal Power Generator: Preprint

    Energy Technology Data Exchange (ETDEWEB)

    Muljadi, Eduard; Gevorgian, Vahan; Wright, Alan; Donegan, James; Marnagh, Cian; McEntee, Jarlath

    2016-09-01

    As renewable generation has become less expensive during recent decades, and it becomes more accepted by the global population, the focus on renewable generation has expanded to include new types with promising future applications, such as river and tidal generation. Although the utilization of power electronics and electric machines in industry is phenomenal, the emphasis on system design is different for various sectors of industry. In precision control, robotics, and weaponry, the design emphasis is on accuracy and reliability with less concern for the cost of the final product. In energy generation, the cost of energy is the prime concern; thus, capital expenditures (CAPEX) and operations and maintenance expenditures (OPEX) are the major design objectives. This paper describes the electrical power conversion aspects of river and tidal generation. Although modern power converter control is available to control the generation side, the design was chosen on the bases of minimizing the CAPEX and OPEX; thus, the architecture is simple and modular for ease of replacement and maintenance. The power conversion is simplified by considering a simple diode bridge and a DC-DC power converter to take advantage of abundant and low-cost photovoltaic inverters that have well-proven grid integration characteristics (i.e., the capability to produce energy with good power quality and control real power and voltage on the grid side).

  18. Informatics requirements for a restructured competitive electric power industry

    Energy Technology Data Exchange (ETDEWEB)

    Pickle, S.; Marnay, C.; Olken, F. [eds.

    1996-08-01

    The electric power industry in the United States is undergoing a slow but nonetheless dramatic transformation. It is a transformation driven by technology, economics, and politics; one that will move the industry from its traditional mode of centralized system operations and regulated rates guaranteeing long-run cost recovery, to decentralized investment and operational decisionmaking and to customer access to true spot market prices. This transformation will revolutionize the technical, procedural, and informational requirements of the industry. A major milestone in this process occurred on December 20, 1995, when the California Public Utilities Commission (CPUC) approved its long-awaited electric utility industry restructuring decision. The decision directed the three major California investor-owned utilities to reorganize themselves by the beginning of 1998 into a supply pool, at the same time selling up to a half of their thermal generating plants. Generation will be bid into this pool and will be dispatched by an independent system operator. The dispatch could potentially involve bidders not only from California but from throughout western North America and include every conceivable generating technology and scale of operation. At the same time, large customers and aggregated customer groups will be able to contract independently for their supply and the utilities will be required to offer a real-time pricing tariff based on the pool price to all their customers, including residential. In related proceedings concerning competitive wholesale power markets, the Federal Energy Regulatory Commission (FERC) has recognized that real-time information flows between buyers and sellers are essential to efficient equitable market operation. The purpose of this meeting was to hold discussions on the information technologies that will be needed in the new, deregulated electric power industry.

  19. Power and heat fluctuation theorems for electric circuits.

    Science.gov (United States)

    van Zon, R; Ciliberto, S; Cohen, E G D

    2004-04-02

    Using recent fluctuation theorems from nonequilibrium statistical mechanics, we extend the theory for voltage fluctuations in electric circuits to power and heat fluctuations. They could be of particular relevance for the functioning of small circuits. This is done for a parallel resistor and capacitor with a constant current source for which we use the analogy with a Brownian particle dragged through a fluid by a moving harmonic potential, where circuit-specific analogs are needed on top of the Brownian-Nyquist analogy. The results may also hold for other circuits as another example shows.

  20. Market Power and Investment in Renewable Electricity Generation

    DEFF Research Database (Denmark)

    Ernstsen, Rune Ramsdal; Misir, Nihat

    In this paper, we compare the investment timing and the optimal level of investment for a strategic firm and a social planner that have a one-time opportunity to invest in different types of electricity generators. Different technology choices entail different revenue streams and hence a different...... while incurring lower investment costs. We additionally find that highly convex investment cost greatly diminishes the impact of market power on the investment decisions. Furthermore, for both the strategic firm and the social planner, fixed baseload generation is preferable during low installed...... capacity and uncertainty cases whereas high uncertainty tends to result in the choice of flexible peakload generation....