One of the key technologies in muhiterminal HVDC network is to break the fault current quickly and reliably when the DC line fault occurs. Therefore, a high voltage DC fault circuit breaker based on resistor type superconducting fault cur- rent limiter（ R -SFCL）was studied in this paper. The circuit breaker consists of two parts of current limiting and turn off. When the line failed, the first limiting part triggered the SFCL to transit from superconducting state to normal state which produced re- sistance to limit the fault current. The faul...
