有色设备

This paper summarizes the process of 1LHB bus power loss event in a nuclear power plant, analyzes the root cause and direct cause of the event, and analyzes the failure mechanism of W-phase fuse failure to normal fusing when the short circuit occurs. This paper puts forward the measures to solve the power loss event and summarizes the problems that should be improved in the future, which has certain reference significance for the safe operation of other nuclear power plants.