摘要
110 kV变电站单母线分段接线与内桥接线在运行方式上极为相似,但由于一次接线方式、继电保护配置等方面的不同,导致备自投动作逻辑存在差别。本文分析了备自投装置在单母线分段接线方式下存在的问题以及分段开关死区故障时备自投各类闭锁及动作情况,提出在不同运行方式下死区故障时备自投判断逻辑及动作策略,在保证安全的基础上优化现有的单母线分段备自投逻辑,使死区故障时备自投可靠隔离故障点并迅速恢复供电,提升供电恢复速度,增加供电可靠性。
The operation mode of sectionalized single-bus is similar to that of internal bridge scheme in 110 kV substation.Due to different primary connecting modes,protection configuration and other aspects,there are differences in operation logic of automatic switchover.The problem in automatic switchover of sectionalized single-bus scheme and different blocking and action situations of backup automatic switch with dead-zone fault of section switch are analyzed in this paper.Dead-zone fault judgment logic and action strategy in different operation modes is proposed.On the basis of ensuring safety,the action logic for automatic switchover of sectionalized single-bus scheme is optimized,which makes automatic switchover isolate the fault section reliably and restore power supply quickly when dead-zone fault occurs,and improve the recovery rate of power supply and power supply reliability.
作者
陆琳
LU Lin(State Grid Zhenjiang Power Supply Company,Zhenjiang 212000,China)
出处
《电力工程技术》
2018年第2期143-148,共6页
Electric Power Engineering Technology
关键词
单母线分段
备自投
闭锁
死区故障
优化
分段开关
single-bus section
automatic switchover
blocking
dead-zone fault
optimization
section switch
作者简介
陆琳(1984—),男,硕士,工程师,从事电力生产变电运维及电气设备故障诊断(E-mail:lulinzhenjiang@163.com)
