Study on partial discharge model of solid insulator

Considering the effect of the surface resistance of void in the actual discharge process, on the basis of the Partial discharge (PD) model based on the theory of plasma, the physical model of PD in voids was modified in this paper. The influence of the change to surface resistance in the void discharge process has been considered in this model. Based on this model, the simulations of PD were investigated by using SIMULINK. The discharge waveform obtained by simulation is very similar to the measured ones in the same condition. It can be seen from the results that the modified model simulation waveform is superior to the traditional proposed, and closer to the actual waveform. This indicates that the simulation model is effective and the simulation results are reliable.