Hybrid DC circuit breaker with current limiting function and control method thereof

The invention relates to a hybrid direct-current circuit breaker with a current limiting function and a control method thereof, when overcurrent occurs in a circuit, the current is transferred from a main branch to a fault processing branch, and according to a fault detection result, a fault line is cut off or normal operation is recovered, so that misoperation of a system is reduced, and meanwhile, the reliability of the system is improved. The capacitor in the fault processing branch does not need an additional pre-charging circuit, the hardware cost of the system is reduced, energy in the current-limiting inductor can be transferred when the fault line is cut off, the energy consumption of the lightning arrester is reduced, and the action time of the circuit breaker is shortened at the same time. The method has good use value and economic benefits in occasions such as the field of multi-port flexible direct current power transmission and distribution. 本发明涉及一种具备限流功能的混合式直流断路器及其控制方法，当电路中出现过电流时将电流由主支路转移至故障处理支路