Localização e preço de contrato ótimo da geração distribuída em sistemas de distribuição radiais de energia elétrica

• Ano de defesa: 2014
• Autor(a) principal: Dal Toé, Marcia Cristina [UNESP]
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Estadual Paulista (Unesp)
• Palavras-chave em Português: Energia elétrica - Distribuição; Energia - Preços; Sistemas de energia eletrica - Planejamento; Electric power distribution
• Link de acesso: http://hdl.handle.net/11449/123361; http://www.athena.biblioteca.unesp.br/exlibris/bd/cathedra/22-04-2015/000824063.pdf

This work aims to present a model to determine the location and the optimal contract price of dispatchable distributed generation (DG) in radial distribution power systems. The proposed approach considers the interaction of two agents: the energy distribution utility and the DG owner. The model is developed under a market structure in which the distribution utility is free to buy electricity from the wholesale energy market or the DG units within their network. The two agents, the distribution utility and the owner of DG, target different objective functions. On one hand, the distribution utility pursuits to minimize payments made in order to meet the expected demand, and secondly, the DG owner seeks to maximize the profits from the energy sold to the distribution utility. This relationship between the two agents is modeled on a bi- level programming scheme. The optimization of the upper level determines the location and contract prices for the DG units, while the optimization model of the lower level is the utility reaction, which can choose to buy more or less energy to minimize its payments. A multistage formulation is also presented, taking into account a horizon of long-term planning. The bilevel programming problem is transformed into a mixed integer linear optimization problem of a sin- gle equivalent level, using the properties of duality and linearization techniques. The problem is modeled using the modeling language AMPL and solved using the commercial solver CPLEX. Simulations on two test systems, IEEE 34 bus and IEEE 85 bus, were performed. The results show the quality and validity of the proposed model