某大型水电站2F机组故障录波3U0频繁启动原因分析及处理经过

Cause Analysis and Treatment of Frequent Startup of 2F unit Fault Recording 3U0 in A Large Hydropower Station

机组故障录波在机组发生故障时,能够自动地、准确地记录故障前、后过程的各种电气量的变化情况,通过这些电气量的分析、比较,对处理机组缺陷,分析事故原因、判断保护是否正确动作有着重要作用。重点介绍机组故障录波记录3U0频繁启动的异常状态,通过分析记录的波形,查找机组故障原因和处理经过,可以为其他水电站出现类似故障提供参考和借鉴。

When the generator fails,the unit fault recording can automatically and accurately record the changes of various electrical quantities in the process before and after the failure,and through the analysis and comparison of these electrical quantities,it plays an important role in dealing with generator defects,analyzing the cause of the accident,and judging whether the relay protection is correct.This paper focuses on the abnormal state of 3U0 frequent start-up recorded by unit fault recorder.By analyzing the recorded waveform,the causes of unit fault and the treatment process can be found,which can provide reference for similar faults in other hydropower stations.