一起电容式电压互感器油箱过热故障的分析

Analysis of an Oil Tank Overheating Faults of Capacitor Voltage Transformer

文章对一起电压互感器油箱过热故障进行了分析,通过对该故障CVT的检查、试验和解体分析,确定了引起油箱过热的原因,主要是因为阻尼器中电容器被击穿,失去了谐振条件,导致电容单元电流增大,使电压互感器底部油箱的温度上升。文章还给出了预防该类型故障的反事故措施。

The paper analyzes an oil tank overheating faults of capacitor voltage transformer（CVT）.The cause of the overheating of the oil tank is found out through the inspection,test and disintegration analysis of the failing CVT.It is mainly because the capacitor is breakdown in the damper and then lost the resonance conditions,resulting in the capacitor unit current increases,so that the bottom of the voltage transformer tank temperature rise.The measures to prevent this type of failure is put forward as well.