摘要
某发电厂300MW机组运行时发电机定子接地保护动作,造成机组跳闸事件。对发电机定子接地保护动作数据及判断方法进行了分析,通过检查确定了发电机出口电压互感器内部故障是造成定子接地保护动作的原因,对下一步如何避免此类问题的再次发生并制定了相关措施和整改方案。
The stator ground protection of a 300 MW generator unit in a power plant acted during operation,resulting in a unit trip event.This paper analyzes the action data and judgment method of generator stator ground protection,determines that the internal fault of generator outlet voltage transformer was the cause of stator ground protection action through inspection,and draws up relevant measures and rectification program to avoid such problems in the future.
作者
戚彦玉
芦玉柱
马伟
QI Yanyu;LU Yuzhu;MA Wei(The Energy Center of Jiuquan Iron and Steel Group,Jiayuguan,Gansu 735100,China)
出处
《冶金动力》
2020年第7期5-6,15,共3页
Metallurgical Power
关键词
发电机
定子接地
电压互感器
generator
stator grounding
voltage transformer
