电流互感器极性、变比、相序正确性试验方法

变电站电流互感器二次回路接线的正确性是变电站安全运行的一项基本保证。通常是在变电站投运后有负荷的情况下进行六角图测试,既拖延投运时间,又对变电站一次、二次设备在测试期间的安全运行埋下了隐患。文章以日月山750 kV变电站为例,介绍投运前进行模拟变压器短路试验来检查电流互感器的极性、变比、相序以及二次接线正确性的方法,经实际测试验证,是一项可行、可推广的试验方法,它极大地提高了变电站投运效率,为变电站的一次投运成功及变电站安全运行提供可靠保障。

Test Method of Polarity,Ratio,Phase Sequence of Current Transformer

Secondary circuit wiring's correctness of substation current transformer is the basic guarantee of substation safe operation.Usually to hexagonal pattern test after commissioning in the substation the case of a load,that would delay the commissioning time,and conceals potential problems to the substation primary and secondary's safe operation during the test.For the Riyueshan 750kV substation example,the paper introduces method to check the current transformer's polarity,ratio,phase sequence and secondary w...