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Doctoral Thesis
DOI
10.11606/T.3.2006.tde-07122006-144442
Document
Author
Full name
Thales Sousa
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2006
Supervisor
Committee
Jardini, Jose Antonio (President)
Arango, Hector
Castro Neto, Gervasio Luiz de
Ramos, Dorel Soares
Tahan, Carlos Marcio Vieira
Title in Portuguese
Valoração do fornecimento de serviços ancilares a partir de usinas hidroelétricas.
Keywords in Portuguese
Reserva girante
Serviços ancilares
Sistemas elétricos de potência
Suporte de potência reativa
Abstract in Portuguese
O presente trabalho propõe o desenvolvimento de uma metodologia de valoração da reserva de potência ativa e do suporte de potência reativa a partir de plantas hidroelétricas. Inicialmente foi apresentado um histórico que descreveu o que foi definido e regulamentado sobre estes serviços em diferentes mercados de energia. Em seguida, com o objetivo de valorar o serviço de reserva de potência ativa foi realizada a mensuração da perda de eficiência, resultante do fornecimento deste serviço, que após convertida em MWh foi relacionada à perda de oportunidade, caso essa energia fosse comercializada no mercado de energia. Para a valoração do suporte de potência reativa foi utilizada a teoria de Fluxo de Potência Ótimo com objetivo de minimizar as perdas do sistema e relacionar essa minimização à redução do suporte de potência reativa. Em seguida, foi apresentada uma metodologia de valoração e alocação dos custos do suporte de potência reativa entre as barras responsáveis pela necessidade adicional deste suporte. Foram realizados vários testes para validação e verificação das metodologias propostas.
Title in English
Ancillary services supply pricing from hydroelectric plants.
Keywords in English
Ancillary services
Power systems
Reactive power support
Spinning reserve
Abstract in English
The present study proposes valuation methodologies for the spinning reserve and for the reactive power support regarding hydroelectric plants. Initially, a revision describing what was defined and regulated on these services in different energy markets is presented. In order to valuate the spinning reserve service, the measurement of efficiency losses stemming from this service supply was done. Thereafter, the efficiency losses were converted into MWh and related to the opportunity loss, in case this energy was commercialized in the energy market. As for the reactive power support valuation, the Optimal Power Flow was used. The objective was to minimize the system losses and relate such a minimization to the reactive power support. Subsequently, methodologies for the reactive power support costs and for the cost allocation among the responsible buses for additional requirement of this support are also presented. Various tests to validate and verify the above mentioned methodologies were carried out.
 
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Publishing Date
2006-12-19
 
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