Simulation Study on Current-zero Period Phenomenon and Analyse of High Voltage Gas Circuit Breaker

The arc current-zero period phenomenon is directly related to the interruption performance of the high-voltage gas circuit breaker, which can be used to evaluate its breaking performance. The corresponding simulation study can quickly and effectively select the better prototype design of circuit breaker, reduce the product development cost, and accelerate the research and development process. This paper calculates the MHD arc simulation for the circuit breaker under various conditions. With the inputs of arc current and arc voltage obtained from simulation, we obtain the approximately optimal arc current-zero period model by using the generic algorithm and the high precision Runge-Kutta numerical calculation method. Based on this model, we calculate the post-arc current corresponding to the recovery voltage under various conditions. This paper obtains the zero-zone state evaluation by the simulation results and the experiment results, which can be efficiently used for qualitative analysis of the interruption performance of high voltage circuit breakers in engineering.