极化去极化电流法在变压器绝缘诊断中的应用

Research and application of PDC test method in transformer insulation diagnosis

介绍了极化去极化电流测试法(PDC)在变压器绝缘诊断中的测试原理、接线和判断方法,通过对两台110 kV和一台10 kV变压器进行测试,并结合常规试验数据进行对比,证明PDC法能够有效发现变压器内部的绝缘问题。

This paper introduces the principle, Judgment and connection method of the method of PDC ,and through two 110 kV transformers and one 10 kV transformer PDC test cases, contrasting with conventional tests. It is proved that the the method of PDC can effectively find the insulation problem inside the transformer.