摘要
针对抽水蓄能机组工况变换频繁等特点,说明了抽水蓄能发电机对继电保护装置相序自动切换及低频保护功能特殊要求。以内蒙古呼和浩特抽水蓄能电站机组为例,介绍了发电机继电保护的双重配置方式,分析了抽水、背靠背等工况下的继电保护功能。并给出了将电气制动开关节点引入保护装置等防误动措施。
According to the characteristics of frequent changes for the operating condition of pumped-storage units,the special requirements for relay protection devices of pumped-storage generators such as automatic switching of phase sequence and capability of low frequency protection are put forward.Taking the unit of Inner Mongolia Hohhot Pumped-Storage Power Station as an example,the duplicated protection scheme of generator is introduced,and the function of relay protection in different operating conditions such as the pumping and back to back modes are analyzed.In addition,the precaution of misoperation such as introducing the node of electric breaking switch to the relay protection is presented.
作者
董洋
李相颉
王启媛
DONG Yang;LI Xiangjie;WANG Qiyuan(Inner Mongolia Hohhot Pumped-Storage Power Generation Co.,Ltd.,Hohhot 010051,China)
出处
《内蒙古电力技术》
2019年第6期36-38,45,共4页
Inner Mongolia Electric Power
关键词
抽水蓄能机组
继电保护
换相
背靠背启动
电气制动
pumped-storage unit
relay protection
phase commutation
back-to-back start
electrical braking
