大型发电机定子线圈对地绝缘的快速修复

Rapid Repairing Techniques for Main Insulation of Large-size Generator Stator Coils

为使大型发电机绝缘故障能短时间内完成修复,利用传统桐马环氧多胶云母带等材料开发了定子线圈对地绝缘快速修复技术。采用该技术修复了某进口350 MW发电机定子线圈对地绝缘故障,修复后的线圈顺利通过电气试验并安全运行超过2年。

In order to realize the rapid repairing of the main insulation of large-size generator stator coils,a rapid repairing technique for the insulation of stator coils to earth was developed by means of the traditional Tung-maleic resin rich mica tape. This technique was applied to repair the insulation of stator coils to earth of the imported 350 MW generator, the repaired coil passed through electric test, and then, operated safely for over 2 years.