Simulation of partial discharge inside the solid insulation in high voltage equipment

Solid dielectric materials are used in all kind of electrical apparatus and devices to insulate one current carrying part from another when they operate at different voltages. But it is found that most of the insulators are manufactured without avoided a small amount of impurity inside the insulator. The impurity of such insulating material is in the form of solid, gas or liquid. During the manufacturing process it is found that most of the solid insulation has impurity in the form of air bubbles (void) which creates a small weak zone inside the insulator. In high voltage power equipments, the insulation failure takes place is due to presence of PDs inside the void enclosed model. Due to above reason PD detection and measurement is necessary for prediction and reliable operation and increase the life time of insulation for HV power apparatus. Accurate simulating of PD is more important for insulation study. In this paper, the mechanism of PD has been simulated by using MATLAB.