巨型水轮发电机定子低频振动改善性处理

摘要

国内已投产的600～700MW容量等级的部分巨型水轮发电机组，其定子机座水平振动较大，虽然对降低定子机座水平振动进行了探索性的研究与处理，但实际效果不明显。糯扎渡水电站采用转子磁轭重新热打键和磁极圆度调整的措施，摸索出了改善定子低频振动的方法，本文着重介绍低频振动处理过程，供水电同行参考借鉴。%A part of large hydraulic units with capacity level of 600~700MW have been put into operation in China.The horizontal vibration of stator frame is larger.The reduction of stator frame horizontal vibration is exploratory studied and handled,but actual effect is not prominent.Nuozhadu Hydropower Station adopts the measures of rotor yoke secondary hot keys and pole roundness adjustment measures.Methods of improving low frequency vibration are explored.In the paper, low frequency vibration treat process is mainly introduced as reference of hydro-power peers.