Análise de desempenho de para-raios de ZnO sob diversos cenários de poluição utilizando Método de Elementos Finitos

Abstract

Surge arresters are equipment of vital importance in the protection of electrical power systems, with the role of protecting transmission, distribution lines and electrical equipment in the face of atmospheric discharges, as well as maneuver surges in eventual maintenance, also reducing maintenance accidents. Thus, it is important to investigate the operating conditions of these equipment under different scenarios, whether under normal or polluted conditions. Therefore, a two-dimensional model of a 30 kV zinc oxide surge arrester was simulated, using the Finite Element Method, to obtain curves of the leakage current and the distributions of electric potential and electric field lines. The results show an increase in the quantities acquired as the level of pollution intensifies.