Economic Dispatch
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Desafios e oportunidades da geração eólica e termelétrica a gás natural no Sistema Elétrico Peruano. / Challenges and opportunities of the wind generation and to natural gas thermal in the Peruvian Electricity System.
Several countries around the world have increasingly sought to diversify their electrical matrix in order to reduce dependence on fossil fuels and reduce emissions of gases responsible for worsening greenhouse effect in the atmosphere. As a result, has grown the participation of some renewable energy sources that until two decades ago did not occupied a prom
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/02/2012
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2. 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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3. Maximização da margem de estabilidade sujeito a minimização do custo de produção da energia eletrica utilizando formulação em dois niveis / Maximization of the stability margin subjected to electric power generation cos minimization using a bilevel programming approach
O presente trabalho apresenta um modelo para o planejamento da operação de sistemas de potência visando maximizar a margem de estabilidade de tensão ao mesmo tempo em que minimizam-se os custos da produção da energia (despacho econômico). O objetivo é obter uma solução para o planejamento da operação da rede que leve em conta não só aspectos t�
Publicado em: 2008
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4. Controlador supervisório inteligente para sistemas híbridos eólico-diesel-bateria de pequeno porte. / An intelligent supervisory controller for wind-diesel-battery systems.
This work presents the development and simulation results of an Intelligent Supervisory Controller for hybrid power systems. The controller uses artificial intelligence techniques, based on artificial neural networks and neuro-fuzzy logic, to forecast both wind power and load, and to take optimal dispatch decisions for hybrid power systems. The main controll
Publicado em: 2007
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5. Despacho economico e ambiental nebuloso em sistemas de energia eletrica / Fuzzy environmental economic dispatch in power systems
As decisões na operação de sistemas de potência estão associadas com diferentes aspectos, não somente técnicos (segurança, confiabilidade, etc.) senão também econômicos (custos de produção, venda de energia, etc.). Estes objetivos estão inclusos dentro dos modelos de despacho econômico usando o Fluxo de Potência Ótimo (FPO). De outra forma,
Publicado em: 2007
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6. Um modelo de despacho economico para reservas operativas
Over the last decade there has been a worldwide reorganization of the power markets, with important changes in their structures, with attempts to improve their efficiency, quality and competitiveness aiming the benefit of users or consumers. The particular characteristics of this industry (impossibility of energy storage and the consequent need for a balance
Publicado em: 2004
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7. BID-BASED STRATEGIES FOR HYDRO PLANTS IN A MULTI-STAGE AND STOCHASTIC FRAMEWORK / ESTRATÉGIA DE OFERTA DE AGENTES HIDROELÉTRICOS SOB INCERTEZA E MÚLTIPLOS ESTÁGIOS
The objective of this work is to present a methodology for the strategic bidding (or bid-based) problem of a hydropower based company, taking into account multiple hydro plants, time-coupling, multiple inflow scenarios and illustrate its application for real case studies. It is initially show that the bid-based dispatch for a hydro plant can be formulated as
Publicado em: 2004
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8. Despacho economico em usinas hidreletricas
This work s main proposal is to increase the knowledge about mathematical models on hydro-plants optimizations. It is based on the economic dispatch and predispatch models, according to a new approach that inc1udes a representation of each turbine/generator set. The first part treats the relationship between the turbine generators operation variables, in ord
Publicado em: 2003
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9. COMPUTATIONAL ASPECTS OF MARKET EVALUATION OF THE DYNAMIC SECURITY ON POWER ELECTRICAL SYSTEMS / ASPECTOS COMPUTACIONAIS E DE MERCADO DA AVALIAÇÃO DA SEGURANÇA DINÂMICA DE SISTEMAS ELÉTRICOS DE POTÊNCIA
In this work, different methodologies for the dynamic security assessment of electric energy systems, the calculation of preventive control measures and the quantification of the economic impact of the generation rescheduling, are used. For the dynamic security assessment the following modules have been adopted: initial data processing and generation of the
Publicado em: 2003
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10. ESSAYS ON LIBERALIZATION, REGULATION AND INVESTMENT IN HYDROTHERMAL SYSTEMS / ENSAIOS SOBRE LIBERALIZAÇÃO, REGULAÇÃO E INVESTIMENTO EM SISTEMAS HIDROTÉRMICOS
This dissertation is structured into 3 essays in which I analyze the economic effects of regulation and liberalization of hydrothermal systems. So far empirical and theoretical studies about power markets have been done mainly for thermal systems, in which equilibrium conditions reflect the fact that current production decisions can be analyzed separately fr
Publicado em: 2003
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11. ESTUDO SOBRE DESPACHO ECONÔMICO E PERDAS MÍNIMAS EM SISTEMA DE POTÊNCIA / A STUDY ON ECONOMIC DISPATCH AND MINIMAL LOSSES IN ELECTRIC POWER SYSTEMS
The general formulation of a problem of economic dispatch concerning losses in transmission lines and the presentation with emphasis on a solution by the Fletcher Power penalty methold is employed. Not considerating the classic load flow where a solution is encountered by trail methods our purposal is to solve a system of inequalities taking into considerati
Publicado em: 1976
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12. ECONOMIC DISPATCH APPLIED TO THE HYDRO-THERMAL FURNAS COMPLEX IN THE STATE OF RIO DE JANEIRO / DESPACHO ECONÔMICO DO COMPLEXO HIDRO-TERMELÉTRICO DE FURNAS NO ESTADO DO RIO DE JANEIRO
In this work is described a methodology, simple, practical and objective, that can be used to find an operating scheme for the hydro-thermal FURNAS complex in the Rio de Janeiro state region. Such scheme assures a reliable supply to the area loads and minimizes the area thermal generators output to save fuel.
Publicado em: 1976