Effects of variable applied voltage amplitude towards partial discharge in solid insulation: article

Partial discharge (PD) plays an important role in the aging of solid insulation system. Over the past decade, PD has become an interesting topic for researchers due to its complexity. Even today, a precise documentation of PD is still not achievable because researchers have found new evidence of factors contributing to PD occurrence. In this paper, a generalized approach of investigating the effects of variable applied voltage amplitude towards PD is discussed. PD activity of a single cylindrical void, inside a solid insulator is simulated using SIMULINK. The solid insulator sample used was epoxy resin. Parameters such as voltage discharge of sampling resistance and current discharge of void are studied in order to understand the relationship between the amplitudes of applied voltage and PD. From the results achieved by simulation, it was found that PD pulses increases linearly with the increase of applied voltage. This shows that PD occurrences are dependant of the amplitude of the applied voltage.