The capacitor

due to different structure and wiring mode

has big difference in its disposition and setting of the internal protection.Starting with external fuse group explosion of 35 kV capacitor at certain substation;based on PSCAD

the fault process is simulated and analyzed and fault reproduction is made according to site record

electrical test result and installation of capacitor after the fault.The lesson on the fault is summarized through analysis and discussion of the fault

and some improvement suggestions are proposed so to provide reference for the future operation.