Electric field analysis of 11 kV socket end fitting composite insulator

The area of electric filed distribution is the major concern in the service life of polymeric insulators. In this paper, the Electric potential and Electric field (E-Field) distribution along the insulator are simulated. At first, the insulator is modeled and the electrical performance of 11 kV socket end fitting composite insulator, under normal and polluted condition are analyzed in 2D by using Finite element method. Under normal and pollution condition the flashover voltage of the insulator are determined experimentally. The result shows that the E-Field is not uniform along the insulator and the Electric stress is higher in end fittings.