110 kV扩大内桥接线的电压切换回路优化设计  

Optimization Design of Voltage Switching Circuit for 110 kV Expanded Inner Bridge Connection

作　　者：杨柳 晋普 YANG Liu;JIN Pu(State Grid Shanxi Taiyuan Power Supply Company,Shanxi Taiyuan 030001,China)

机构地区：[1]国网山西太原供电公司,山西太原030001

出　　处：《农村电气化》2025年第1期15-18,共4页Rural Electrification

摘　　要：110 kV新建站、改建站的设计中,扩大内桥接线方式应用广泛。但其电压切换回路存在设计缺陷,可能出现母线电压由主变电压切换回路完成并列的情况,存在带电母线向不带电母线反送电的隐患。针对该问题,文章分析了其形成的原因,并提出了电压切换回路的优化设计方案,解决了母线电压由切换回路完成并列的问题。Expanded inner bridge connection is widely used in new and rebuild station.However there are design defects in voltage switching circuit,which may cause bus voltage parallelling through voltage switching circuit,and lead to the hidden dangers of reverse power transmission from live busbar to non-live busbar.To solve this problem,this article analyzes the reasons for its formation,and proposes an optimized design scheme for voltage switching circuit,solving the problem of parallel connection of bus voltage through switching circuits.

关 键 词：扩大内桥接线 电压切换 回路优化 

分 类 号：TM727[电气工程—电力系统及自动化]