发电机定子线棒绝缘烧损原因及对策

INSULATION DETERIORATION AND COUNTERMEASURES FOR GENERATOR STATOR BAR

指出了导致南津渡水电站灯泡贯流式机组定子线棒绝缘劣化和接地事故的主要原因是槽部绝缘设计存在缺陷、散热容量不足等原因。提出了改造定子绕组和冷却系统等处理办法 ,实际运行表明提出的处理办法效果很好。

This paper analyzes the reasons that cause bomb turbine unit stator bar insulation aging and ground fault in Nanjindu hydro power plant. Then the measurements are presented to solve the problem in generator insulation aging.