Hydropower Systems
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Hydropower infrastructure and regional order making in the Sub-Mekong region
Abstract This paper conceptualizes the interplay between infrastructures and the reconstruction of regional order. We analyze the promotion of hydropower development in the Greater Mekong Sub-Region in relation to the potential emergence of a Chinese hegemony. Dams, electricity grids and monitoring systems have enabled cross-border linkages and dependencies,
Rev. bras. polít. int.. Publicado em: 24/01/2019
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2. ANALYSIS OF THE BALANCING MARKET IMPACTS ON THE SPOT MARKET BIDDING STRATEGY OF A HYDROPOWER PRODUCER / ANÁLISE DOS IMPACTOS DO MERCADO DE AJUSTES NA ESTRATÉGIA DE OFERTA DE AGENTES HIDRELÉTRICOS EM MERCADOS DE CURTO PRAZO
A década de 90 foi marcante para a indústria de eletricidade, com a introdução de mercados competitivos em que os agentes geradores são livres para tomar suas decisões de produção e investimento, assumindo integralmente os riscos decorrentes de suas estratégias. O despacho e o preço spot neste tipo de mercado são definidos através de leilões di�
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/04/2010
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3. 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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4. Comparison between models NEWAVE and ODIN for long-term hydropower scheduling of the brazilian system / Comparação entre os modelos NEWAVE e ODIN no planejamento energetico do Sistema Interligado Nacional
Os modelos de planejamento energético aplicados ao Sistema Interligado Nacional (SIN) devem fornecer um despacho de geração hidrotérmica que atenda ao mercado de energia elétrica brasileiro de forma a assegurar o atendimento das demandas e a minimizar os custos operativos. Devido às características hidrelétricas predominantes no sistema brasileiro, o
Publicado em: 2009
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5. Electricity generation from the offshore wind energy source. / Geração de energia elétrica a partir da fonte eólica offshore.
In the last decade wind power source was the fastest-growing energy source. Technological learning curves for this sector fall down by a 15% a 20% rate each 3 years. Countries which are committed with wind power are running after the target of 12% wind into the worlds electrical production by 2020. The contribution of the offshore wind power (OWP) source is
Publicado em: 2008
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6. Optimized operation study applied to a hydropower reservoir system / Estudo da operação otimizada aplicada a um sistema de reservatórios destinado à geração de energia elétrica
Uma das aplicações mais importantes da análise de sistemas no planejamento de recursos hídricos diz respeito à determinação de estratégias operacionais de sistemas de múltiplos reservatórios, elementos indispensáveis aos aproveitamentos hídricos, cuja operação é alvo de análises que podem envolver muitas restrições e variáveis de decisão.
Publicado em: 2006
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7. Solving the unit commitment problem of hydropower plants via Lagrangian Relaxation and Sequential Quadratic Programming
We consider the optimal scheduling of hydropower plants in a hydrothermal interconnected system. This problem, of outmost importance for large-scale power systems with a high proportion of hydraulic generation, requires a detailed description of the so-called hydro unit production function. In our model, we relate the amount of generated hydropower to nonlin
Computational & Applied Mathematics. Publicado em: 2005-12
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8. AnÃlise dos efeitos dinÃmicos em reservatÃrios de grande extensÃo : estudo de caso : ReservatÃrio de Sobradinho
The work deals with dynamic effects analysis in big reservoirs, having as case study the Sobradinho reservoir. From the generation of numerical model of the land using database of the SRTM-90 (Shuttle Radar Topographic Mission, in cooperation of NASA, NIMA, DLR and ASI), tools created by Danish Hydraulic Institute (DHI) for hydrodynamic simulations had been
Publicado em: 2005
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9. 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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10. Sistema de suporte a decisão para o planejamento e a programação da operação de sistemas de energia eletrica
This work presents a computer aided decision support system applied to long and short term hydrothermal power systems scheduling. This program, called HydroLab, is based on a hydropower database system that manages the main set of Brazilian hydro plants (the current version manages a total of 102 plants coordinated by the ONS - National Electric System Opera
Publicado em: 2003
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11. Otimização de sistemas hidroenergéticos. / Hydropower systems optimization.
An application analysis of nonlinear programming is developed for hydropower systems optimization. The Paranapanema system is chosen like case study and treats aspects tied to hydrological series, that constitute the main input of optimization process. Different objective functions performance are analyzed for the hydropower optimization. It analyzes rules f
Publicado em: 2001
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12. Aproveitamento da energia hidroeletrica secundaria para produção de hidrogenio eletrolitico
In hydroelectric systems, during the rainiest periods of the year, there is surplus hydropower in the reservoir, some ofwhich is commercialized (secondary hydroelectric power) and the rest spills over producing no power. A manner of utilizing such lost power is converting it into an energy carrier, as, for example, electrolytical hydrogen. In this study such
Publicado em: 1998