In order to limit the over-voltage produced by switching capacitor bank of vacuum circuit breaker, a design method of shunt capacitor series anti-over-voltage protector based on non-linear highenergy zinc oxide valve plate is proposed to solve the problem of insufficient energy and poor energy uniformity of the zinc oxide valve plate in the current over-voltage protector. Firstly, the over-voltage mechanism of capacitor switching and the key point of suppression are analyzed. At last, the performance of the over-voltage protector is verified by the simulation model and the actual circuit. The research results of this paper can provide new ideas for the design of over-voltage protectors, and have certain engineering applicability.
展开▼
