Effect of Superconducting Fault Current Limiter (SFCL) on HVDC Circuit Breaker

In HVDC systems, the used of HVDC circuit breakers have shown successful results. But fault current level has a serious problem in HVDC system because during dc fault interruption Natural zero current is not possible. So artificial zero crossing DC fault current should be somewhat modified with DC current breaking topology. By combining fault current limiter with dc current breaking topology (using black box arc model) is an alternative feasible solution. This paper gives review of application of resistive super conducting fault current (SFCL) for DC circuit breaker (mechanical CB) with DC current breaking topology to estimate the effects of combining fault current limiter on MCB to verify its DC fault current interruption characteristic.