High Coupling Split Reactance（HCSR）current limiter has good economy and wide applicability and has attracted attention in the field of high-voltage and ultra-high voltage. However

after the introduction of the HCSR current limiter in the power system

its operation process can involve such process as current commutation and the short time introduction of inductance of current limiter into the circuit of the main circuit breaker

which may cause a higher overvoltage. Based on this and in view of such typical scenario as 90 kA short circuit current of 500 k V system

the overvoltage situation of introduced current limiter under different short circuit faults is analyzed and calculated. The suppression result of different over voltage protection schemes to the TRV amplitude and steepness of the main circuit breaker and vacuum fast circuit breaker is compared and analyzed. The results show that

on the basis of parallel capacitance of both ends of the current limiter

the capacitance or resistive capacitance in parallel to the two series vacuum fast circuit breaker can reduce remarkably the steepness and amplitude of TRV of the main circuit breaker

the suppression result of the parallel capacitance to the steepness is more efficient and the suppression result of the parallel resistive capacitance to the amplitude is more remarkable. The research result can provide a basis for the overvoltage protection scheme and parameter selection of the current limiter.