Multi-port Hybrid HVDC Circuit Breaker

摘要

This paper proposes a new n-port hybrid dc circuit breaker for offshore multi-terminal HVDC grid application. The n-port dc circuit breaker can substitute n-1 hybrid dc circuit breakers at a dc bus with n-1 adjacent dc transmission lines. The system level behavior of the proposed multi-port hybrid dc circuit breaker is similar to the behavior of other hybrid dc circuit breakers. The operation principles of the proposed multi-port dc circuit breaker are introduced, analyzed and compared to the existing solution in this work. The components ratings are compared to the existing solution and the functionality of proposed device is verified by simulation.