某66 kV变电站主变压器保护动作闭锁备自投逻辑优化  

Logic Optimization on Blocking Standby Automatic Switchover for Main Transformer Protective Action in 66 kV Substation

作　　者：单汝涛 琚永安 刘聪[1] SHAN Rutao;JU Yongan;LIU Cong(State Grid Siping Power Supply Company,Siping,Jilin 136099,China)

机构地区：[1]国网四平供电公司,吉林四平136099

出　　处：《东北电力技术》2024年第1期16-18,42,共4页Northeast Electric Power Technology

摘　　要：某66 kV内桥接线变电站采用主变压器保护动作闭锁备用电源自动投入逻辑,但随着变电站运行方式调整,该逻辑已无法满足各种运行方式下供电可靠性的要求。通过分析不同运行方式下主变压器故障对备用电源自动投入动作的影响,以及主变压器保护与备用电源自动投入的闭锁关系,提出进线备用电源自动投入方式下,主变压器保护动作时备用电源自动投入逻辑优化方案,提高变电站供电可靠性。The 66 kV inner bridging wiring substation adopts the logic of the main transformer protective action blocking standby automatic switchover.However,with the adjustment of the substation operation mode,the logic can no longer meet the requirements of power supply reliability under various operation modes.Through analyzing the influence of the main transformer fault on the standby automatic switchover in different operating modes,and the locking relationship between the main transformer protection and the standby automatic switchover,it puts forward under the mode of inlet wire standby automatic switchover.When the main transformer protection operates the optimization scheme of standby automatic switchover logic,the power supply reliability of the substation is improved.

关 键 词：内桥接线 备自投 闭锁 优化 

分 类 号：TM762.1[电气工程—电力系统及自动化]