Electric Energy Distribution
Mostrando 13-24 de 144 artigos, teses e dissertações.
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13. Aplicação de redes inteligentes nas instalações elétricas residenciais / Application of smart grid in residential electrical installations.
Electricity as an energy resource acquired vital importance in modern society because it allows relatively easily meet the demand for their services. Thus the demand for electricity increases with the evolution of populations who benefit from. The electrical system that produces this input is limited in its ability to available resources for generation, tran
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/04/2012
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14. Avaliação de postes de Eucalyptus retirados da rede elétrica por microscopia eletrônica de varredura e ensaios de flexão
This paper presents results of tests on poles of wood of different species of Eucalyptus, new and removed from the network of distribution of electric energy in southern Brazil. Are presented correlations between mechanical properties, density, state of deterioration and lumen diameter of Eucalyptus poles. The state of deterioration was determined by field i
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/03/2012
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15. Propostas de procedimentos para o estabelecimento de metas de qualidade do serviço de distribuição de energia elétrica. / Proposals of procedures for setting targets for power distribution service quality.
This work presents a review of the methodology used in PRODIST 2010, and alternative proposals for setting targets and rates depending on quality of service (QoS). All analysis are supported in statistical interruption data studies of 6 electricity distribution companies (EDC) between 2007 and 2008 with different characteristics of DEC, FEC, number of users
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/03/2012
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16. Performance of single wire earth return transformers with amorphous alloy core in a rural electric energy distribution system
In this paper are presented some considerations about the performance of single wire earth return amorphous alloy core transformers in comparison with conventional silicon steel sheets cores transformers used in rural electric energy distribution network. It has been recognized that amorphous metal core transformers improve electrical power distribution effi
Mat. Res.. Publicado em: 08/05/2012
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17. Heuristic for solving capacitor allocation problems in electric energy radial distribution networks
The goal of the capacitor allocation problem in radial distribution networks is to minimize technical losses with consequential positive impacts on economic and environmental areas. The main objective is to define the size and location of the capacitors while considering load variations in a given horizon. The mathematical formulation for this planning probl
Pesquisa Operacional. Publicado em: 05/04/2012
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18. Reconfiguração e Alocação Ótima de Geração Distribuída em Sistemas de Energia Elétrica / OPTIMAL RECONFIGURATION AND DISTRIBUTED GENERATION ALLOCATION IN ELECTRIC POWER SYSTEMS
This work presents a methodology for optimal reconfiguration and optimal distributed generation allocation aiming to minimize technical energy losses in electric power distribution systems. The proposed methodology includes two step by step heuristic algorithms, based on sensitivity indexes, one for the reconfiguration and the other for the distributed gener
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/09/2011
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19. Estudo do comportamento elétrico de lâmpadas fluorescentes / Study of the electric behavior of fluorescent lamps
This work presents a broad study of the electrical behavior of compact fluorescent lamps. It includes an analysis of the lamp components and the circuit of the reactor; an analysis of the stability on the operating point of the lamp; a study of static and dynamic characteristics; a development of a mathematical model; simulations and experiments. It is also
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/06/2011
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20. Gerenciamento da oferta e da demanda em micro-sistemas de energia via otimização por enxames de partículas
Intelligent micro-grids, which integrate distributed energy resources with loads, are among the current major tendencies for electric power distribution systems. Distributed resources promote important changes in the operation and management of the distribution system, since they require that the control and the intelligence of the system must be distributed
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/05/2011
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21. Bases conceituais da implantação de redes elétricas inteligentes de distribuição de energia elétrica. / Conceptual basis for implementation of distribution smart grids.
As redes elétricas inteligentes significam um novo paradigma de fornecimento de energia, cuja concepção integra várias áreas de concentração, novas funcionalidades e funções até então não realizáveis, bem como uma pluralidade de tecnologias e a necessidade de infraestrutura de apoio para a sua realização. A transição das redes elétricas atu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/05/2011
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22. A fuzzy/Bayesian approach for the time series change point detection problem
This paper addresses the change point detection problem in time series. A methodology based on the Metropolis-Hastings algorithm applied to time series modeled as a process with Beta distribution is discussed. In order to make this methodology useful in practice, a fuzzy cluster technique is applied to the initial time series at first, generating a new data
Pesquisa Operacional. Publicado em: 2011-08
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23. A estrutura tarifária de uso das redes de distribuição de energia elétrica no Brasil: análise crítica do modelo vigente e nova proposta metodológica. / The rate structure of electric power distribution networks in Brazil: critical analysis of the current model and new methodological proposal.
O trabalho discute a questão da precificação eficiente em sistemas de distribuição de energia, abordando desde a teoria econômica clássica aplicada aos modelos de produção e transporte da energia, passando por uma avaliação crítica da atual metodologia de estrutura tarifária vigente no Brasil, até o detalhamento de uma proposta consistente e si
Publicado em: 2011
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24. Algoritmo para frenagem regenerativa de uma máquina síncrona de imã permanente / Algorithm for regenerative braking of a permanent magnet synchronous machine
Environmental protection and optimal energy resources are great activity research areas. As a result of these researches, electric vehicles (EVs) and hybrid (HEV) developments have been accelerated. They have challenging problems such as low autonomy, power conversion, vehicle control, energy management and distribution within it, as well as the esthetic and
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/08/2010