摘要
三峡电站某大型水轮发电机在运行10余年以后,定子线棒端部出现电晕现象并逐年呈现增长趋势,影响发电机的安全稳定运行。通过跟踪电晕的发展过程,分析并证实了发电机端部脏污是电晕产生的主要原因。通过采取有效的处理措施,并增加发电机定子线棒端部的清洁频率,近3年内没有再次发生电晕现象。
After more than ten years of operation of a large-scale hydro-turbine generator in the Three Gorges Hydropower Station,corona phenomenon is observed at the end of the stator bars and is increasing yearly,which affects the safe and stable operation of the generator.By tracing the development process of the corona,it is found that the corona is due to the contamination of the generator ends.Then,effective treatment measures are implemented and the cleaning frequency of the stator bar ends is increased.After the treatment,no corona phenomenon is observed in the past three years.
作者
毛业栋
MAO Yedong(Overhaul and Maintenance Factory, China Yangtze Power Co., Ltd., Yichang 443000, China)
出处
《水电与新能源》
2020年第5期71-73,共3页
Hydropower and New Energy
关键词
三峡电站
发电机
电晕
处理方法
Three Gorges Hydropower Station
generator
corona
treatment measure
