600MW发电机定子线棒温差偏大的原因分析及对策Cause Analysis and Countermeasures on Excessive Temperature Difference of 600 MW Generator Stator Bar
钱和平,方昌勇
QIAN He-ping,FANG Chang-yong(Zhejiang Energy Lanxi Power Generation Co.
摘要(Abstract)：
发电机定子线棒温差偏大会严重影响发电机的安全运行。结合兰溪发电厂600 MW发电机层间及出水温差偏大的原因分析,采取发电机线棒割管检查、发电机定子线棒酸洗、提高定冷水pH值、定冷水箱密封改造等处理对策,解决发电机温差偏大和定冷水流量下降缺陷,为存在类似问题的发电厂提供参考和借鉴。
The excessive temperature difference of generator stator bar seriously affects the safe operation of the generator.Through the cause analysis on the excessive interlayer and effluent temperature difference for the 600 MW generator in Lanxi Power Plant,the treatment measures are adopted such as generator bar pipe cutting for inspection,generator stator bar pickling,stator cooling water pH value improvement,sealing transformation of stator cooling water tank etc.to solve the problems of excessive generator temperature difference and stator cooling water flow decrease.It can serve as a reference for other power plants with similar problems.
关键词(KeyWords)：
发电机;定子线棒;温差;分析;对策
generator;stator bar;temperature difference;analysis;countermeasures
基金项目(Foundation):
作者(Author):
钱和平,方昌勇
QIAN He-ping,FANG Chang-yong(Zhejiang Energy Lanxi Power Generation Co.
DOI: 10.19585/j.zjdl.2012.08.013
参考文献(References)：
- DL/T801-2010大型发电机内冷却水质及系统技术要求[S].北京:中国电力出版社,2011.
- 邹哲,胡学文,陈志刚,等.发电机内冷水处理方法的研究及探讨[J].腐蚀与防护,2003,24(7):310-312.
- 黄秋龙.发电机内冷水系统的化学清洗[J].化学清洗,1997,13(6):5-6.
- SVOBODA R.,SEIPP H-G..Flow restriction in water-cooled generator stator coils:prevention,diagnosis and removal.Part1:Behavior of copper in water-cooled gen-erator coils[J].PowerPlant Chemistry,2004,6(1).