锦屏二级水电站发电机中性点引出线放电原因浅析及处理

Analysis and Treatment of Discharging from Generator Neutral Outlet Hydropower Station of Jinping Ⅱ

锦屏二级水电站发电机安装完成后,测试绝缘电阻、直流电阻均合格,整体直流、交流耐压试验均通过;本文根据2号发电机定子绕组耐压试验中出现的放电现象,分析其放电原因,并提出有效地处理措施,为后续大型水电站机组安装、试验提供参考。

We completed the installation of Jinping Ⅱ Hydropower Station Generator, also proved up the standard on testing the direct-current resistance and passed DC withstand voltage test and AC withstand voltage test. According to discharge phenomenon from the stator winding withstand voltage test in the Jinping II Hydropower Station generator, we analyse the reason of the discharge, provide effective treatment, and provide references for later installation and test of large hydropower station machine set soon.