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单母分段接线备自投动作方案分析及优化
作者姓名:陆琳
作者单位:国网镇江供电公司;
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。

关 键 词:单母线分段  备自投  闭锁  死区故障  优化  分段开关
收稿时间:2017/12/23 0:00:00
修稿时间:2018/1/31 0:00:00

Analysis and Optimization on Automatic Switchover Action Program of Sectionalized Single-bus Scheme
Authors:LU Lin
Affiliation:State Grid Zhenjiang Power Supply Company, Zhenjiang 212000, China
Abstract: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.
Keywords:single-bus section  automatic switchover  blocking  dead-zone fault  optimization  section switch
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