机组保护停机信号与监控系统时间配合探讨  

On the Time Coordination between Unit Protection Shutdown Signal and Monitoring System

作　　者：吉元涛 骆佳勇 李能昌 汪巍[1] 李家汉 赵思意 JI Yuantao;LUO Jiayong;LI Nengchang;WANG Wei;LI Jiahan;ZHAO Siyi(Baihetan Hydropower Plant, China Yangtze Power Co., Ltd., Ningnan 615400, China)

机构地区：[1]中国长江电力股份有限公司白鹤滩水力发电厂,四川宁南615400

出　　处：《水电与新能源》2021年第6期45-47,共3页Hydropower and New Energy

摘　　要：某大型水力发电厂机组保护动作后,采用出口接点启动带自保持的重动继电器,重动继电器接点将停机信号送至监控系统,用以满足监控系统LCU对开关量DI的采集时间要求。结合电厂实际运行过程中保护动作停机信号与监控系统时间配合出现的问题,研究提出了相应的改进措施。In a large-scale hydropower plant,when the unit protection acts,the reset relay with self-holding is started by the outlet contact and the shutdown signal is sent by the reset relay connection point to the monitoring system,so that the requirements of the monitoring system LCU on the collection time of the switching value DI can be satisfied.The time coordination problem between the unit protection signal and the monitoring system observed in practice is analyzed and corresponding improvement measures are proposed.

关 键 词：机组保护 停机出口时间 监控系统 电气事故停机流程 

分 类 号：TM774[电气工程—电力系统及自动化]