摘要
由红外测温仪发现一起电容式电压互感器电磁单元发热故障,随后对该互感器电磁单元进行解体检查。通过对中间变压器空载试验以及阻尼回路阻尼电流的测量,确认阻尼回路的谐振电容故障是导致电磁单元发热的根源。提出电容式电压互感器红外巡视方案以及异常的排查方法,方便及时发现电容式电压互感器发热故障隐患。
An electromagnetic unit heating fault of a capacitor voltage transformer（CVT） is monitored by the infrared temperature measuring instrument.Subsequently,the electromagnetic unit of the mutual inductor is disintegrated to check.By the no-load test of the intermediate transformer and the damping current test of the damping circuit,it is confirmed that the resonant capacitor failure of the damping circuit is the reason of the heating of the electromagnetic unit.The infrared inspection scheme of CVT and the investigation method of the abnormity are put forward,by which CVT heating fault can he found convenient and timely.
出处
《山东电力技术》
2017年第4期74-76,80,共4页
Shandong Electric Power
