2011-03-302011-03-302009-09-09MANITO, Allan Rodrigo Arrifano. Análise da qualidade da tensão no ponto de conexão de uma fábrica de alumínio com o sistema interligado nacional. Orientadora: Maria Emília de Lima Tostes. 2009. 145 f. Dissertação (Mestrado em Engenharia Elétrica) - Instituto de Tecnologia, Universidade Federal do Pará, Belém, 2009. Disponível em: http://repositorio.ufpa.br/jspui/handle/2011/2058. Acesso em:.http://www.repositorio.ufpa.br:8080/jspui/handle/2011/2058In this work, it is presented an analysis of the voltage quality at the Point of Common Coupling (PCC) of an aluminum industry plant with the national grid in order to evaluate the impact of this facility in the grid regarding the voltage fluctuation, voltage unbalance and voltage harmonic distortion. The data of the power quality disturbances cited above were collected through a measurement campaign over a period of 7 consecutive days, as requested by the National Electric System Operator (ONS) for cases of loads connected to the grid which have nonlinear characteristics, such as aluminum plants. Additionally, a computational study to determine the maximum values of voltage harmonic distortion at the PCC is presented in order to complete the analysis made by the measurement campaign. The computational programs used for the study were the HarmZs of CEPEL and Matlab 7.0.porAcesso AbertoQualidade da energia elétricaFlutuação de tensãoDesequilibrio de tensãoDistorções harmônicas de tensãoPower qualityVoltage fluctuationVoltage unbalanceVoltage harmonic distortionDissertaçãoCNPQ::ENGENHARIAS::ENGENHARIA ELETRICA::SISTEMAS ELETRICOS DE POTENCIA::MEDICAO, CONTROLE, CORRECAO E PROTECAO DE SISTEMAS ELETRICOS DE POTENCIA