Hydro Power Plants
Mostrando 1-12 de 26 artigos, teses e dissertações.
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1. DAILY SCHEDULING OF SMALL HYDRO POWER PLANTS DISPATCH WITH MODIFIED PARTICLES SWARM OPTIMIZATION
This paper presents a new approach for short-term hydro power scheduling of reservoirs using an algorithm-based Particle Swarm Optimization (PSO). PSO is a population-based algorithm designed to find good solutions to optimization problems, its characteristics have encouraged its adoption to tackle a variety of problems in different fields. In this paper the
Pesqui. Oper.. Publicado em: 2015-04
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2. Modelo computacional de cortes para otimizar o potencial de geração de usinas hidrelétricas / Computacional model of cuts to optimize the potential to generate hydro power plants
The repowering of hydro power plants increases their generating capacity by improving the structure or changing equipment. It is a low cost alternative to improve the generation capacity comparing with the building of new plants. Repowering by changing the hydro-turbines is the focus of this work. By doing that, the efficiency of the energy generation proces
Publicado em: 2011
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3. STOCHASTIC DYNAMIC PROGRAMMING AND CONVEX HULL ALGORITHM IN THE HYDROTHERMAL SYSTEMS OPERATION PLANNING / PROGRAMAÇÃO DINÂMICA ESTOCÁSTICA E ALGORITMO DE FECHOS CONVEXOS NO PLANEJAMENTO DA OPERAÇÃO DE SISTEMAS HIDROTÉRMICOS
This thesis presents a new approach for the expected-cost-to-go functions modeling used in the stochastic dynamic programming (SDP) algorithm. The proposed technique is applied to the long-term operation planning of electrical power systems. Using state space discretization, the convex hull algorithm is used for constructing a series of hyperplanes that comp
Publicado em: 2010
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4. Ferramentas e metodologia para consolidação de dados de usinas hidreletricas brasileiras / Tools and methodology for data consolidation from Brazilian hydroelectric plants
Este trabalho apresenta ferramentas e procedimentos para a consolidação de dados de usinas hidrelétricas brasileiras. O objetivo é melhorar a qualidade dos dados que servem como entrada aos modelos computacionais utilizados no planejamento e na programação da operação energética. Como ferramentas de suporte à aplicação da metodologia, são descri
Publicado em: 2009
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5. Model to alocate the assured energy of hydro power plants using genetic algorithms. / Modelo de sazonalização da energia assegurada de usinas hidrelétricas utilizando algoritmos genéticos.
The operating revenue of power generation companies has two different components: revenues arising from power purchase agreements and from spot market, managed by the Câmara de Comercialização de Energia - CCEE The income of contracts is predictable, but there are a lot of difficulties to do prognosis with the spot market revenue component, because it dep
Publicado em: 2008
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6. Solução de problemas de otimização utilizando arquitetura híbrida. / Solution of optimization problems using hybrid architecture.
Electrical power could be considered as one of the economy propulsion vector of a country, assuming extremely important and strategic role because it makes direct influence to the production capacity. The expansion of electrical energy production could not only be done in a short time because constructions in this area take many years and could require more
Publicado em: 2008
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7. BIFUEL CONVERSION OF THERMAL POWER PLANTS UNDER UNCERTAINTY: A REAL OPTIONS APPROACH / CONVERSÃO DE TERMELÉTRICAS PARA BI-COMBUSTÍVEL EM AMBIENTE DE INCERTEZA: UMA ABORDAGEM POR OPÇÕES REAIS
In Brazil, despite the predominant participation of hydro power plants, some years ago, due to Thermo Power Priority Program (PPT), a large number of Natural Gaspowered plants were implanted. A lot of uncertainties are imposed to the players in the Brazilian Power Market, and one more risk arises: the Natural Gas offer. The bi-fuel conversion arises as an op
Publicado em: 2008
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8. The social and institutional problems of hydro power dams and projects : selection of recent cases in Brazil and in another countries / Problemas sociais e institucionais na implantação de hidreletricas : seleção de casos recentes no Brasil e casos relevantes em outros paises
Esta dissertação procura selecionar e estudar casos de projetos de hidrelétricas construídas em outros países, durante o século XX e no Brasil, desde 2002 até a presente data; além de identificar os problemas sociais e institucionais nestes casos selecionados. Para isso, o texto inicialmente discute as mudanças ocorridas no setor elétrico brasileir
Publicado em: 2007
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9. An operational policy for the mid term hydrothermal scheduling of the Brazilian interconnected power system / Uma politica operativa a usinas individualizadas para o planejamento da operação energetica do sistema interligado nacional
This work presents an operational policy for the mid term hydrothermal scheduling of the Brazilian Interconnected Power System (BIPS) based on the individual representation of the hydro and thermo power plants, the detailed representation of the plants? features and the indirect representation of the inflow stochasticity through a forecasting model. These ch
Publicado em: 2006
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10. Interior-point methods applied on power systems modeled by network flows / Metodos de pontos interiores aplicados em sistemas de potencia modelados por fluxo em redes
The aim of this work is to develop an optimization model for individual hydro-plants and a model for DC optimal power flow for the hydro-thermal operational planning and programming, in particular for the brazilian electric power system. For this purpose interior-point methods that explore problems properties, in particular the network flow structure, has be
Publicado em: 2006
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11. Optimal dispatch of generating units in hydroelectric systems by heuristic based on langrangean relaxation and dynamic programming / Despacho otimo de unidades geradoras em sistemas hidreletricos via heuristica baseada em relaxação lagrangeana e programação dinamica
The daily scheduling operation of the electrical energy system has by target to find the dispatch generation to the next day which must be compatible with the daily generation target defined by the energy planning models and to be an operational guide. Because of its proximity with the real time operation the modeling must represent the main characteristic o
Publicado em: 2006
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12. Hydrothermal scheduling with storage guide-curves / Planejamento da operação energetica via curvas-guias de armazenamento
The Brazilian electric sector has been passing through successive reforms in the search for an institutional model that allows the optimization of the use of the energetic resources, concealed with the goal of achieving a sustaining development. The energetic planning plays a fundamental roll in this context, thus studies and researches designated to support
Publicado em: 2006