降低水电站发电机中性点电流互感器故障率应用分析

Research on reducing fault rate of neutral current transformer for hydropower station generator

大型发电机电流互感器损坏事故时有发生。针对水电站发生发电机中性点电流互感器损坏事故,提出了要因分析3个步骤,找出了事故原因。分析结果表明:通过试验验证,调整三相电流互感器布置,可有效降低电流互感器故障率。研究成果可为其他工程提供借鉴。

Damage accident of current transformer of large generator often happens.Aiming at the damage accident of neutral current transformer of generator in a hydropower station,this paper puts forward three steps for analyzing the cause of the accident to find out the cause of the accident.Through test and verification,it is showed that adjusting the layout of three-phase current transformer,can effectively reduce the failure rate of current transformer.