摘要
介绍了华东500 kV瓶窑变电所故障电流限制器在线路负荷电流正常增加过程中,频繁出现的光通道阀损坏、主动旁路保护动作及永久闭锁合闸情况,分析了导致故障电流限制器频繁永久闭锁合闸的根本原因,提出了修改阀控与监测系统程序,增大阀高电位控制单元检测时间,以及增加监控后台远方复归功能的改进方法,为变电站无人值班提供了技术支撑。
For the fault current limiter in 500 kV Pingyao substation, introduction was made to the phenomena such as optical channel valve damage, active bypass protection action and permanent closing in the normal increasing process of line load current. This paper an- alyzed fundamental causes making the fault current limiter frequently permanent closing; raised modifying valve control and monitoring system programs; increased test time of thyristor control unit and added to monitor the remote reset function, which provided technical support for unattended substation.
出处
《电工电气》
2013年第11期29-31,52,共4页
Electrotechnics Electric
关键词
故障电流限制器
永久闭锁
手动复归
阀基电子设备
远方复归
fault current limiter
permanent close
hand reset
valve-based electronic device
remote reset