摘要
电厂中升压变压器的安全运行,对于保障发电厂效益有着重要意义。以事件报警记录和继电保护定值为研究对象,通过分析事故前后电量数据变化和保护动作原理,判断事故是由雷击和差动保护压板退出双重因素导致,同时提出了几条处理措施。结合此次事故中暴露的管理问题,也提出了关于微机保护装置运行维护、定值投退方面的管理建议。
The safe operation of step-up transformer in power plant is of great significance to ensure the benefit of power plant.Taking the event alarm record and relay protection setting value as the research object,by analyzing the electricity data changes before and after the accident and the protection action principle,it was judged that the accident was caused by lightning strike and differential protection pressing plate exit,and several treatment measures were proposed.Combined with the management problems exposed in the accident,some management suggestions on the operation and maintenance of the microcomputer protection device and the switching on and off of the setting value were put forward.
作者
杜灵亮
Du Lingliang(Shanghai SUS Environment Co.,Ltd.,Shanghai 201703,China)
出处
《机电工程技术》
2021年第2期224-226,233,共4页
Mechanical & Electrical Engineering Technology
关键词
变压器
过电流
跳闸
transformer
overcurrent
trip
