一起110kV备自投动作失败案例分析及改进方案  

Analysis of a Case of 110 kV Automatic Bus Transfer Operation Failure and Research on Improvement Schemes

作　　者：俞伊丽 张展耀 接晓霞 吕志林 杨珊 章怡帆 YU Yili;ZHANG Zhanyao;JIE Xiaoxia;LYU Zhilin;YANG Shan;ZHANG Yifan(Zhoushan Power Supply Company of State Grid Zhejiang Electric Power Co.,Ltd.,Zhoushan 316000,China)

机构地区：[1]国网浙江省电力有限公司舟山供电公司,浙江舟山316000

出　　处：《山东电力高等专科学校学报》2025年第1期12-15,共4页Journal of Shandong Electric Power College

摘　　要：针对一起110 kV备自投动作失败案例,分析了动作失败的原因,并提出了两种改进方案。第一种方案将110 kV备自投跳闸出口触点接至进线操作箱的“永跳”开关量输入端,以避免出现启动重合闸和闭锁备自投的问题。第二种方案将备自投闭锁条件控制字设置为“闭锁功能仅在启动前有效”,以解决备自投动作闭锁其继续投入备用电源的问题。对这两种方案的优缺点进行对比分析,优先推荐第一种改进方案。In allusion to a case of 110 kV automatic bus transfer operation failure,the causes of the failure are analyzed,and two improvement schemes are proposed.In the first scheme,the tripping outlet contact of 110 kV automatic bus transfer is connected to the“permanent tripping”digital input of the incoming line operation box,so as to avoid the trouble of initiating reclosing and blocking automatic bus transfer.In the second scheme,the blocking condition control word of automatic bus transfer is set to the value that“the blocking function is only effective before startup”,so as to solve the problem that the automatic bus transfer operation blocks its continued connection to the standby supply.Based on the comparative analysis of the advantages and disadvantages of the two schemes,the first improvement scheme is recommended as a priority.

关 键 词：备自投 保护跳闸 手动跳闸 闭锁条件 

分 类 号：TM772[电气工程—电力系统及自动化]