Cost Of Electric Power
Mostrando 25-36 de 83 artigos, teses e dissertações.
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25. Desenvolvimento e implementação de um sistema de monitoramento em tempo real da tensão da rede com acesso remoto
Some years ago in Brazil the power quality was related, basically, with interruption of supplied energy and certain special loads of industry. In recent years, however, under controls of the regulating agency ANEEL (Agência Nacional de Energia Elétrica) and with specialists, the power quality area received the due attention and was legislated and acquired
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 05/10/2009
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26. HYBRID SYSTEM USING GAS TURBINE AND FUEL CELL FOR AERONAUTICAL APU APPLICATION
Much effort and resources are being directed to reduce emissions in the most varied sectors. Today, aviation accounts for less than 5% of human related CO2 emissions, but projections for 2050 indicate that the growth of aviation emissions risks undermining the mitigation progress achieved in other sectors. In aeronautics, increasing fuel efficiency is consid
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 200904
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27. Sistema híbrido de climatização visando conforto térmico e eficiência energética
The motivation of the present work is the search for rational use of electric power, improving productivity and costs reduction through a hybrid climatization equipment (conventional + evaporative), focused in building and industrial automation. The objective of dissertation is to develop a climatization system that gives thermal comfort with electric power
Publicado em: 2009
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28. Programa de universalização de energia elétrica: estudo de caso no Estado da Bahia / Universalization program of electric energy: case study of the state of Bahia
This study is related to the development of the electricity services universalization process in Brazil. It describes the former model, the first universalization proposals, a legislation evolution since the beginning in 2002, its adaptation to the current situation among the country to the electric-power distribution companies, to costumers and to the conce
Publicado em: 2009
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29. Estimativa do indice de nacionalização dos sistemas fotovoltaicos no Brasil / Estimates of nationalization index of PV systems in Brazil
The Law nº 10.438/02 established the Program of Incentives for Alternative Electric Power Sources - PROINFA, which is the only national program aimed to foster alternative renewable energy sources and to increase the share of electric energy production from enterprises based on wind power, small hydropower plants and biomass in the interconnected national p
Publicado em: 2009
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30. Solution in the supply of electric energy to mall shopping in Bahia / Soluções no suprimento de energia elétrica para shoppings centers na Bahia
From a survey done in four Shopping Malls located in Bahia State, this dissertation is an investigation proposal, under a technical-economic bias have seen that the majority of companies aims to reduce costs - the implementation and use of various forms of alternative energy (Cogeneration and/or energy systems) that enable cost reduction and are applicable t
Publicado em: 2009
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31. PLANNING NETWORK DISTRIBUTION OF ELECTRICITY RESTRICTIONS WITH GEOGRAPHICAL AND ELECTRICAL / PLANEJAMENTO DE REDE DE DISTRIBUIÇÃO DE ENERGIA ELÉTRICA COM RESTRIÇÕES GEOGRÁFICAS E ELÉTRICAS
This work presents two methods to solve the problem of Electric Distribution Networks (EDN) with geographical and power restrictions. The high cost of the project involving EDN together with lack of efficient methods when working with real applications justifies the development of this research. Taking into account concepts of heuristic and metaheuristic two
Publicado em: 2009
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32. USE OF EXPANDERS FOR GENERATING ELECTRICAL ENERGY IN NATURAL GAS PRESSURE REDUCTION STATIONS / USO DE EXPANSORES PARA GERAÇÃO DE ENERGIA ELÉTRICA EM ESTAÇÕES DE REDUÇÃO DE PRESSÃO DE GÁS NATURAL
The natural gas is compressed to high pressures in order to be transported in the gas pipeline and delivered to the clients at lower pressures, using pressure reduction control valves in an adiabatic process. It can be shown that the same natural gas thermodynamic output state is achieved if the control valves can be substituted by expanders, producing work
Publicado em: 2009
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33. ELECTRIC DISTRIBUTION POWER SYSTEMS RELIABILITY OPTIMIZATION: An Approach Considering the Selection and Allocation of Protection and Switching Devices / OTIMIZAÇÃO DA CONFIABILIDADE DE SISTEMAS DE DISTRIBUIÇÃO DE ENERGIA ELÉTRICA: Uma Abordagem Considerando a Seleção e Alocação de Dispositivos de Proteção e Manobras
One of the main goals of the electric utilities is to provide energy to its customers in a reliable and low cost way. Traditionally, the electricity sector regulatory commissions impose continuity targets, which must be carried out, to avoid great penalties. For many years, the electric utilities have adopted the practice of allowing the increment of tempora
Publicado em: 2009
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34. APROVEITAMENTO DA CASCA DE ARROZ EM UMA MICRO CENTRAL TERMOELÉTRICA AVALIAÇÃO DOS IMPACTOS ECONÔMICOS E AMBIENTAIS PARA O SETOR ARROZEIRO DO RIO GRANDE DO SUL
The rice husk production in Rio Grande do Sul, state responsible for more than half of this cereals country production, leads to the need of an appropriate environmental management in view the impacts produced by this residue in the environment, whether they be local or global, like greenhouse effect impacts. Therefore, a rational utilization of this energet
Publicado em: 2009
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35. PRIORIZAÇÃO DOS MODOS DE FALHA DE EQUIPAMENTOS UTILIZANDO OS MÉTODOS DE ANÁLISE MULTICRITÉRIO PROMETHEE E FUZZY PROMETHEE / PRIORITIZATION OF FAILURE MODES OF EQUIPMENT USING THE METHODS OF MULTICRITERIA ANALYSIS PROMETHE AND FUZZY PROMETHE
Aiming to meet the criteria of availability and reliability required by the rules of the Brazilian electric sector, energy companies have increased the use of systems for monitoring and diagnosis. This allows the identification of prior evidence of abnormalities in the operational condition of substation equipment, enabling the practice of predictive mainten
Publicado em: 2009
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36. Conflito, consenso, democracia e capitalismo em estados periféricos : o processo de privatização do setor elétrico no Brasil e na Argentina
This thesis analyzes the political and economical arguments that furnished a broad consensus for the implementation of the structural adjustments in the 1990s, amongst them the privatization programme of the electrical energy sector in Brazil and Argentina. It is considered whether the restructuring of the electric section accomplished the presuppositions on
Publicado em: 2009