变压器铁芯多点接地故障的诊断及其处理方法

Diagnostic and Processing Method of Transformer Core with Grounding Fault in Multiple Spots

分析云浮供电局所属变压器铁芯故障的类型和原因作为例子。说明通过气相色谱分析法和CAM-3型主变铁芯多点接地故障监视器,可以初步判断铁芯是否存在接地故障,再用直流或交流法准确的查找出铁芯接地的故障点。针对不同的情况,用电容放电冲击或大电流冲击法等均能有效的消除故障点。

By analysis the faults types and caused reason in transformer＇s core. Multiple spots grounding faults can be preliminary judged by the gas chromatography and the CAM-3 fault monitor. And the grounding fault points can be found out accurately by using DC or AC way. For different condition the grounding faults can be effectively clear up by the capacitor discharge current＇s impulsion or the heavy current＇s impulsion.