Circuit Breakers for MVDC – Requirements and Alternatives
Circuit breakers capable of interrupting dc are key components for realizing MVDC grids. Such breakers are fundamentally different to their ac counterparts, and are subject to quite different requirements. A presentation of these requirements is followed by an overview of different dc circuit breaker topologies, experiences from testing of a 27kV VSC-assisted resonant current breaker prototype and an outlook for the future.
Dr. Tomas Modeer
(CTO SCiBreak AB)