摘要
本文主要介绍珠海发电厂两台700MW发电机的100%定子接地保护存在死区这一问题的解决过程。通过研究该保护的动作原理和可靠性,以及对故障进行深入地检查分析,发现了导致保护死区的根本原因,提出了相应的改造方案并进行了改造,从根本上解决了保护死区问题。
There was dead-zone in the ground protection of the two 700MW generator's 100% stator. By studying and deep analysis of the principle and reliability of the protection, the paper finds the radical reason of dead-zone, puts forward corresponding alteration project and completed the alteration. Then, the dead-zone of the protection has been resolved fundamentally.
出处
《机电工程技术》
2008年第2期96-98,共3页
Mechanical & Electrical Engineering Technology
关键词
发电机
100%定子接地保护
死区
改造
generator
100% stator ground fault protection
dead-zone
alteration
