摘要
介绍了陕西榆林银河上河发电厂"1.23"发电机组励磁系统误强励事故情况,分析了误强励过程中发电机、变压器组保护的动作行为,提出了防止误动的改进原理和动作逻辑;探讨了原保护设计动作出口方式中值得商榷的问题;最后提出了若干改进建议。
This paper firstly introduces the protection operation of generator-transformer unit after ＂1.23＂ faulty reinforeed excitation in Shaanxi Yulin Shanghe power plant, then analyzes the protection behavior of the generator-transformer unit in faulty reinforced excitation, finally puts tin＇ward the improvement principle ＆ operation logic for avoiding protection misoperation, at the same time, also discusses the cautions in actuation exit mode for original protection design and proposes improvement sugesstions.
出处
《陕西电力》
2009年第8期56-58,共3页
Shanxi Electric Power
关键词
发电机
励磁系统
发变组保护
误强励
主变过激磁
generator
excitation system
protection of generator-transformer unit
faulty reinforced excitation
main transformer overexcitation
