故障录波装置在发现和处理二次回路故障中的应用

Application of Fault Recorder in Detection and Treatment for Secondary Circuit Fault

故障录波装置作为电力系统故障分析与故障排除的依据,可提供故障定位,减少巡线工作量及故障恢复时间,能使调度人员及时、全面、准确地掌握故障情况,从而快速地处理系统故障。结合实际工作中的1个案例,通过对录波报告的详细分析,发现了保护二次回路存在的异常,及时予以查找,发现并排除了回路故障,对电流回路两点接地时各种故障情况下二次回路电流的分布进行了深入细致的分析,明确了故障原因和可能导致的后果,杜绝了可能发生的保护不正确动作,有力地保障了电网安全稳定运行。

As a basis of power system fault analysis and troubleshooting, fault recorder can provide fault location, reduce the workload of patrolling lines and failure recovery time, which helps to grasp the failure timely, comprehensively ＆ accurately, and deal with the failure quickly. In the light of the detailed analysis for recorded wave reports combining with a case in actual work, the abnormalities existed in the secondary circuit protection was discovered and eliminated in time. Based on the detailed analysis for secondary circuit current distribution in the various fault conditions when current circuit two points grounding, the fault cause and failure consequences was defined, which avoided the possible protection misoperation.