电压互感器二次反充电技术控制措施  

Technical Control Measures for PT Secondary Reverse Charging

作　　者：张庆伟[1] 钱俊凤 毛强[1] 娄方旭 曾茗 胡星[1] 张承模[1] ZHANG Qingwei;QIAN Junfeng;MAO Qiang;LOU Fangxu;ZENG Ming;HU Xing;ZHANG Chengmo(Guiyang Power Supply Bureau,Guiyang 550002;Information Center of Guizhou Power Grid Co.,Ltd.,Guiyang 550001)

机构地区：[1]贵州电网有责任公司贵阳供电局,贵州贵阳550002 [2]贵州电网有责任公司信息中心,贵州贵阳550001

出　　处：《电力安全技术》2021年第6期22-25,共4页Electric Safety Technology

摘　　要：对一种隔离开关辅助触点接触不良导致的电压互感器二次反充电技术控制措施进了探讨,分析了发生PT二次反充电的原因,并提出了监控后台遥控逻辑闭锁、母联分闸回路闭锁及加强切换装置母线刀闸常闭触点监控及告警的措施,从技术手段上减少了由于刀闸辅助触点不正确动作导致的PT二次反充电的风险,对防止PT二次反充电起到了积极作用。This paper discusses the control measures for potential tramsformer(PT)secondary reverse charging caused by poor contact of isolator auxiliary contacts,analyzes the causes of potential transformer secondary reverse charging,and proposes control measures including the monitoring of background remote control logic blocking,circuit bus bar switching circuit blocking,and strengthened measures of monitoring and warning for switching device bus bar switch contacts,technically reducing the risk of PT secondary reverse charging caused by incorrect operation of switcher auxiliary contacts,which plays a positive role for preventing PT secondary reverse charging.

关 键 词：互感器 电压切换装置 PT反充电 控制措施 

分 类 号：TM712[电气工程—电力系统及自动化]