Análise de padrões de desligamentos de transformadores da rede básica

Abstract

This study presents a mathematical model of the maintenance applied at power transformers in Basic Network based on records about the duration of scheduled and unplanned shut downs. The monograph has as central theme, with help of Weibull ++8software, determining the probability distributions function to describe the behavior of maintenance used by a power company to deal with transformers with voltage class greater or equal to 230kV. The research is applied to a actual parameter of the power company and uses the bibliographic and documentary method, where of the analysis of records about location, type and duration of each shutdown. The results presents the analysis of the mathematical models obtained to diverse types of shutdowns based in the age of the equipment and the period that the transformer is unavailability. Such functions describe the patterns of preventive and corrective maintenance, moreover relate the frequency of shutdowns and interventions.