Electricity Distribution Network
Mostrando 13-20 de 20 artigos, teses e dissertações.
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13. 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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14. Alternativas para a inserção do gás da Bacia de Santos na matriz energética - estudo de caso: Cidade de Santos / Alternativas para a inserção do gás da bacia de santos na matriz energética estudo de caso: cidade de Santos
The natural gas difficult to penetrate in the residential market and compete with electrical energy is the main objective of this study, which will support that in big cities, where natural gas is already reality or will be the use of natural gas should not be considered competition for other types of energy resources but as a strategically complement of the
Publicado em: 2008
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15. UMA ABORDAGEM BAYESIANA PARA O CÁLCULO DOS CUSTOS OPERACIONAIS EFICIENTES DAS DISTRIBUIDORAS DE ENERGIA ELÉTRICA / A BAYESIAN APPROACH TO ESTIMATE THE EFFICIENT OPERATIONAL COSTS OF ELECTRICAL ENERGY UTILITIES
This thesis presents the main results of the cost efficiency scores of 60 Brazilian electricity distribution utilities. Based on yardstick competition scheme, it was applied a Kohonen Neural Networks (KNN) to identify and to group the similar utilities. The KNN results are not deterministic, since the estimated weights are randomly initialized. Thus, a Monte
Publicado em: 2008
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16. ALGORITMOS HEURÍSTICOS DE OTIMIZAÇÃO DA PROTEÇÃO E MANOBRA EM REDES DE DISTRIBUIÇÃO DE ENERGIA / RELIABILITY HEURISTIC ALGORITHMS FOR PROTECTION AND MANEUVERING DEVICES DISTRIBUTION NETWORKS
The new regulations of the electricity sector have requested from the power utilities great performance efficiency on their distribution systems, requiring more rigorous quality and continuity energy levels. In Brazil, the privatization of the power utility companies has been allowing the adoption of new planning and operation policies, that necessarily cons
Publicado em: 2008
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17. New formulations for the reconfiguration problem in energy distribution systems. / Novas formulações para o problema de reconfiguração de redes de distribuição de energia elétrica.
The reconfiguration of electricity distribution systems is concerned with finding the state of switching and protective devices so as to optimize a given objective function, which is usually defined as minimization of total loss, fault isolation, load balancing among feeders, or improvement of voltage profile. In this work, the objective function is defined
Publicado em: 2007
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18. ANALYSIS OF THE TRUSTWORTHINESS IN NETS OF DISTRIBUTION RADIAL: RECONFIGURATION AND ALOCATION OF DISTRIBUTED GENERATION / Análise da Cconfiabilidade em Redes de Distribuição Radiais: Reconfiguração e Alocação de Geração Distribuída
The distribution utilities must satisfy two concurrent objectives during planning process of the electric network: minimization of the investment cost and the satisfaction of reliability targets. An alternative to satisfy these objectives is to include low cost alternatives in the planning process. One of these alternatives is the reconfiguration of the dist
Publicado em: 2006
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19. Resolução do problema de fluxo de carga para redes de distribuição utilizando o metodo desacoplado rapido com rotação automatica de eixos / Fast decoupled load flow method with automatic axes rotation for distribution systems
The fast decoupled loadflow (FDLF) [2] is a variant of the traditional Newton method [1] for solving the loadflow problem (find the operational state of electrical power networks). It is well-known that FDLF presents unsatisfactory performance when applied to distribution systems. Their unfavourable r/x branch ratios may lead to divergence or slow convergenc
Publicado em: 2006
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20. Estudo dos impactos ambientais da interaÃÃo da rede de distribuiÃÃo de energia elÃtrica com a arborizaÃÃo urbana nos municÃpios da RegiÃo Metropolitana do Recife
A ausÃncia de um planejamento adequado do processo de crescimento urbano, nas grandes cidades, tem provocado problemas de interferÃncia da arborizaÃÃo com a infra-estrutura urbana e redes de serviÃos localizadas nas vias pÃblicas. Ressaltam-se as redes aÃreas de distribuiÃÃo de energia elÃtrica, telecomunicaÃÃo, gasoduto, Ãgua e esgoto que, na m
Publicado em: 2005