Avaliação de uma estratégia de controle secundário de tensão utilizando seleção de barras piloto e áreas de controle através de lógica fuzzy

• Ano de defesa: 2006
• Autor(a) principal: Pavão, Rafael Kubiça
• Orientador(a): Lemos, Flávio Antonio Becon
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Pontifícia Universidade Católica do Rio Grande do Sul; Porto Alegre
• Palavras-chave em Português: ENGENHARIA ELÉTRICA; SISTEMAS ELÉTRICOS DE POTÊNCIA - CONTROLE; POTÊNCIA; LÓGICA DIFUSA; ENERGIA ELÉTRICA - TRANSMISSÃO
• Link de acesso: http://hdl.handle.net/10923/3157

This dissertation tackles the study of hierarchical voltage control in power systems. The focus is the study of a hierarchical level, called secondary voltage control. In order to support this dissertation is realized a bibliography review about the subject, analyzing the problems related with the design and implementation of strategies for secondary voltage control. An analysis on computational implementation of power flow and dynamic simulation is presented. Special attention is given to the problem of chosen pilot buses and voltage control areas. It is proposed a methodology based in the Fuzzy C-Means algorithm to choose voltage control areas, and its generators, and selection of more representative pilot buses of each area. Firstly, buses with similar voltage magnitude behaviour are identified, for a specific control action, clustering these buses in a set called coherent voltage area. Secondly, the possibility of these clusters to become a voltage control area is assessed, which is defined as the capacity of generators to supply reactive power and realize voltage control of this area. Finally, pilot buses more representatives for each area are chosen. The next step consists in a design for a secondary voltage control structure to equalize reactive power reserves of the system, using a participation factor for reactive power of each generator. In order to validate the proposal approach are executed static and dynamics simulation using the New England Test System (39 buses) and the CEEE 230 kV Transmission System (55 buses).