摘要
天生桥一级水电站机组220 V直流系统因设计不够完善,接线方式不满足南方电网的要求,并且不具备查找直流接地故障和监视馈线开关状态等功能,故对其进行整体改造,优化接线方式,母线上增加绝缘监测装置和开关监测装置,实现在发生故障时能"找得准、找得快",从而使直流系统更加安全可靠,更有利于机组稳定地运行。改造后的机组220 V直流分配屏运行状况良好。
The original 220 kV DC system of Tianshengqiao 1 st-stage Hydropower Station was designed with connection mode not able to meet the requirements of China Southern Power Grid,and did not permit DC earthing fault check and feeder circuit breaker state monitoring.The contents of overall upgrade include optimization of connection mode,adding insulation and breaker monitoring devices for the bus to permit correct and quick fault positioning,make the DC system more safe and reliable,which is favorable for stable operation of units.The unit 220 kV DC distribution panel has been operating well since the upgrade was completed.
作者
王梦浩
WANG Meng-hao(Hydropower Plant of Tianshengqiao 1st-stage Hydropower Development Co.,Ltd.,Xingyi 562400,China)
出处
《广西水利水电》
2020年第5期78-80,共3页
Guangxi Water Resources & Hydropower Engineering
关键词
直流系统
接地
绝缘监测
优化接线方式
天生桥一级水电站
DC system
earthing
insulation monitoring
optimize connecting mode
Tianshengqiao 1st-stage Hydropower Station
