牵引变电所直流接地故障检测方法探讨

变电所直流接地故障对运行危害很大，如果不及时消除，有可能引起断路器的误分、误合而造成严重后果。由于直流接地故障大多数都比较隐蔽，用传统的查找方法耗时长，定位困难。针对这个难题，重点探讨应用直流接地检测仪器进行直流接地故障定位的原理和方法。使用仪器在设备带电不断开直流回路的情况下，对变电所直流系统各种接地故障进行检测，方便快捷地找到故障点，及时消除隐患，避免扩大事故范围，从而解决变电所直流接地故障不易定位的难题。

Discussion about Direct Current Grounding Malfunction Monitoring Method of Traction Transformer Substation

It has prodigiouss harm that of transformer substation direct current grounding function.If it is not despelled in time,it arose graveness aftermath because of breaker disjoinning or shutting.Owing to direct current grounding malfunction is the great mass of concealment,traditional lookup method is time-consuming and orientation difficulty.In allusion to this problem,this paper stresses discussion direct current grounding malfunction orientation elements and method by making use of direct current grounding monitoring apparatus.This apparatus can monitor varied grounding malfunction of direct current system under equipment electrification and connection direct current loop,it can find malfunction point convenience and shortcut,it can dispel hidden trouble in time,it can avoid extendable accident,finally solve direct current grounding malfunction orientation difficulty.