2012-04-122012-04-122005-02-10BRANCHE, Marcos Nascimento. Análise da qualidade de energia em sistemas de distribuição através de medição e fluxo de carga harmônico trifásico. Orientadora: Maria Emília de Lima Tostes; Coorientador: Ubiratan Holanda Bezerra. 2005. 97 f. Dissertação (Mestrado em Engenharia Elétrica) - Instituto de Tecnologia, Universidade Federal do Pará, Belém, 2005. Disponível em: http://repositorio.ufpa.br/jspui/handle/2011/2618. Acesso em:.https://repositorio.ufpa.br/handle/2011/2618This work presents an analysis about the power quality, carried out in a real electrical energy distribution grid, considering different customers groups, located in the low voltage grid. The study was made in two steps. The first one through measurements registered in the transformers of the distribution grid supplied by CEA – Amapá’s Electricity Company, previously classified in groups as: commercial group, residential group and home-and-commercial group, identifying and characterizing the generators sources of harmonics generation in the system, making possible, this way, an analysis of the harmonic injection level in the distribution grid as well as the impacts these distribution sources of harmonic generation can provoke in the power quality offered by the CEA utility. The last stage of the study presents the use of a threephase harmonic load flow, where, considering the harmonic profile found out through the measurements carried out, a global evaluation of the system is provided.porAcesso AbertoSistema de energia elétricaEnergia elétricaHarmônicos (Ondas elétricas)Controle de qualidadeAmapá - EstadoDissertaçãoCNPQ::ENGENHARIAS::ENGENHARIA ELETRICA::SISTEMAS ELETRICOS DE POTENCIA::MEDICAO, CONTROLE, CORRECAO E PROTECAO DE SISTEMAS ELETRICOS DE POTENCIA