Investigations of Non-uniform Pollution Impact on Electric Field Distribution in a Point-Barrier-Plane Arrangement under AC Voltage

Abstract

This research work presents the influence of the polluting layers deposited on the surface of an insulating barrier on the electric field distribution under AC voltage, in a pointbarrier-plane electrode system. A numerical simulation using COMSOL Multiphysics based on the finite element method was carried out. The influence of a polluted barrier with different volumes conductivities and different diameters of the pollution layer on the electric field is studied. A comparison between a part and a completely polluted insulating barrier is performed. The difference between polluted and conductive barriers in also presented. The obtained results are in good agreement.