某110kV输电线路备自投装置切换失败故障分析及处理  

Fault Analysis and Treatment of Switching Failure of Backup Automatic Switching Device in A 110kV Transmission Line

作　　者：徐珩耀 XU Hengyao(Shibei Power Supply Company,State Grid Shanghai Electric Power Company,Shanghai 200000,China)

机构地区：[1]国网上海市电力公司市北供电公司,上海200000

出　　处：《电工技术》2021年第17期55-56,61,共3页Electric Engineering

摘　　要：某110 kV输电线路运行期间发生了一起主供电源失电时备自投装置未正确动作的事件,导致备用线路合闸失败,造成全站失压事故的发生。为杜绝类似事故再次发生,对该110 kV输电线路备自投切换失败的原因进行了分析和在线测试,并制定了预防措施,提高了备自投动作的成功率和可靠性。During the operation of a 110 kV transmission line,the standby automatic switching device did not operate correctly when the main power supply was de energized,which led to the failure of closing the standby line and the voltage loss of the whole station.To prevent similar accidents from recurring,the reasons for the failure of standby automatic switching on a 110kV transmission line are analyzed and tested online,and preventive measures are formulated to improve the success rate and reliability of standby automatic switching actions.

关 键 词：全站失压 备自投 切换失败 

分 类 号：TM76[电气工程—电力系统及自动化]