A synthetic test method for evaluating the shunt capacitor switching performance of vacuum circuit breakers

摘要

A single-phase synthetic test method for evaluating the shunt capacitor switching performance of circuit breakers is proposed. The most important factor for evaluating the performance of a shunt capacitor switch is restriking, which is mainly influenced by the inrush current and the recovery voltage. A synthetic test circuit comprised of a current source, a voltage source, and the high-frequency current source is designed to evaluate vacuum circuit breakers. Results show that this method is especially suitable for obtaining a restriking probability distribution.