220 kV Circuit Breaker Modeling and Its Parameter Determination Based KEMA Arc Model

The black box arc model is widely used to describe the dynamic change of the arc in quenching process during interruption of circuit breaker. However, most of the black box models are not capable of realizing the analysis of the repeated breakdown of the circuit breaker. In this paper, an extended KEMA's equation based arc model is proposed in this paper to address this issue. To obtain the parameters of KEMA model, the voltage and current data of the arc during the interrupting process of the circuit breaker are obtained, the parameters are calculated by particle swarm optimization then. The comparison of calculated and measured voltage traces showed the accuracy and correctness of the obtained parameters. As this model is developed based on EMTP-ATP, it can be directly applied in electromagnetic transient studies.