200MW发电机定子绕组端部施加直流电压下泄漏电流测量的技术分析

Technological analysis of measuring leakage current under condition of exerting DC voltage on winding ends for 200MW generator stator windings

分析了双鸭山电厂200MW发电机组定子绕组端部绝缘缺陷。采用直流耐压试验方法测量发电机定子绕组泄漏电流。测试实测数据表明,该方法对发现发电机定子绕组端部绝缘缺陷是有效的。

The paper analyzed the defects of stator windings ends insulation for 200MW generator set in Shuangyashan Electric Power Plant, and DC withstand voltage test was applied to measure leakage current of generator stator windings, the results showed that the method is suitable for finding out insulation defects of generator stator windings ends.