Medição de corrente de fuga total em para-raios de ZnO no LEAT-UFPA e aquisição da componente resistiva a partir da utilização do método de filtragem digital

William M. de AssisAlander Rocha Ribeiro

Abstract

Dada a importância da utilização do para-raios como equipamento de proteção no Sistema Elétrico de Potência e a necessidade de inspeções periódicas com o intuito de diagnosticar possíveis falhas e aumentar o tempo de vida útil desse equipamento, utiliza-se a componente resistiva da corrente de fuga como parâmetro de avaliação das condições de operação do mesmo. No presente trabalho, são mostrados o ensaio de medição de corrente de fuga total usando a fonte série-ressonante do Laboratório de Alta e Extra-Alta Tensão da UFPA e os resultados da aquisição dessa componente ao utilizar o Método de Filtragem Digital, proposto por Lira (2007), em uma rotina computacional desenvolvida em Python.

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