一起110 kV GIS电流互感器气室内部发热故障分析

Analysis of an Inner Heating Fault of a 110 kV GIS Current Trans Former

针对红外测温中发现的GIS设备电流互感器气室二次回路开路导致铁芯发热的问题,结合设备结构和超声波、特高频局放检测等综合分析,提出了故障诊断依据。利用停电检查进行验证,为电流互感器二次回路开路问题的红外检测和判断提供参考。

In this paper,aiming at explaining the phenomenon of iron core overheating caused by opening secondary circuit in GIS TA chamber discovered by infrared temperature measurement,the comprehensive analysis of the equipment structure,AE and UHF detection are adopted for fault diagnosis.The off-line inspection is carried out verify the conclusion,which provides a reference for infrared detection and judgment of open circuit problem of TA secondary circuit.