Study on simulation technology of partial discharge in single void based on SIMULINK

The existing simulation methods of partial discharge (PD) are difficult to simulate the transient process of PD in voids. In order to solve this problem, a new simulation method by using the simulation block of public module library and power system library in MATLAB (SIMULINK) was developed. According to the physical model of PD in a single void, the equivalent circuit of PD simulation was constructed. The simulation methods of different discharge processes, including discharge voltage control method, sectional time control method, linear time control method, and nonlinear time control method, were studied. Thus the computer simulation of PD transient process in a single void was realized by multiform control methods. Main characteristics of the simulation waveform in one main frequency cycle and a single waveform of PD at nanosecond order are similar to those of the experimental waveforms. It is shown that this simulation method based on SIMULINK can be used to simulate the different discharge processes, and is effective for easy modeling and fast calculation.