电容型电流互感器现场试验tan δ值异常的分析及解决方法

Solution to abnormal tanδ value problem in field test of capacitive current transformer

针对某变电站现场预试测量电容型电流互感器(型号:LB6-110W)中出现的tanδ为异常值的情况,进行了现场分析,指出了产生的原因,并提出了切实可行的解决办法。总结了现场试验测量中的有关问题,并就如何提高数据正确程度提出一些建议,并根据现场实际情况进行误差校正分析。现场试验表明,所采用消除方法可消除现场干扰,所得数据完全满足试验。

To solve the problem of abnormal tanδ value infield test of some capacitive current transformer （ LB6-110W ） ,this paper analyzes abnormal phenomenon and gives some feasible methods to resolve the abnormal tanδ On this basis, some problems worth attention are indicated concerning CT operation, maintenance, and test. Test data makes it clear that improved test method adapts to on-site test.