Current Limiting Hybrid High Voltage DC Circuit Breaker With Reclosing Function Limiting

Baoge Zhang ； Yuemin Jiao ； Rui Sun ； Shanyan Ping ； Boxiang Wu

《淡江理工學刊》 26卷7期 (2023/07) Pp. 959-969

https://doi.org/10.6180/jase.202307_26(7).0007

摘要

DC circuit breaker is the core equipment for the safe operation of DC transmission system. A current limiting hybrid HVDC circuit breaker topology with reclosing function is proposed in this paper. The topology makes use of the symmetry of current limiting branch, which not only realizes the bidirectional fault current breaking function, but also realizes the reclosing function in case of transient fault and permanent fault. The current limiting structure of the topology greatly reduces the number of IGBT and the cost. This paper studies and analyzes the working principle of the system in stages, then designs the parameters, and finally uses PSCAD software to build a simulation model for verification. The verification results show that compared with the traditional circuit breaker, the proposed DC circuit breaker can not only effectively reduce the rise rate of fault current and reduce the energy consumption requirements of lightning arrester, but also reduce the number of IGBT and reduce the cost.

關鍵字

DCCB ； DC power grid ； reclosing ； energy consumption of arrester