摘要
针对某电厂600MW发电机正常运行时突然发生定子接地故障跳机事故,分析现场检查结果,综合故障前后各系统数据进行研究,找出故障原因,更换损坏设备。对发电机定子绕组端部增加测振设备,采取加装阻尼装置等方法解决局部振动过大的问题。
To the accident of stator ground fault tripper which is suddenly occur during normal operation in 600MW generator,the onsite inspection results were analyzed.The data of each system before and after failure were integrated and studied.The causes of the failure was found and the damaged equipment was replaced.The vibration measurement equipment was added to the end of the generator stator winding.Installation of damping devices and other methods were used to solve the problem of excessive local vibration.
作者
骆华志
钟振坤
LUO Huazhi;ZHONG Zhenkun(Guangdong Jinwan Power Plants,Zhuhai 519050,China)
出处
《电工技术》
2018年第21期92-94,共3页
Electric Engineering
关键词
发电机
定子接地(零序过压)保护
端部振动
固有频率
generator
stator grounding(zero sequence overvoltage)protection
end vibration
natural frequency
