一起1000 kV隔离开关异常分合闸事故分析  

Analysis of Abnormal Opening and Closing Event of 1000 kV Isolating Switch

作　　者：杨奇 孙法治 YANG Qi;SUN Fazhi(Shanxi Luguang Electric Power Co.,Ltd.,Changzhi,Shanxi 046600,China;State Gird Yingkou Dashiqiao Power Supply Company,Yingkou,Liaoning 115100,China)

机构地区：[1]山西潞光发电有限公司,山西长治046600 [2]国网营口大石桥市供电公司,辽宁营口115100

出　　处：《东北电力技术》2025年第4期52-54,59,共4页Northeast Electric Power Technology

摘　　要：就某1000 kV隔离开关在合闸过程中电机烧损,就地分闸时出现的误分合事故,对隔离开关不同时序辅助触头的使用范围、单相联动及分相操作的隔离开关控制回路存在的问题进行了分析。提出了加强隔离开关控制回路反措要求、明确隔离开关辅助触头动作时序、优化自保持控制回路与电机电源回路配合关系、规范运维人员作业过程等解决方案,确保了隔离开关的安全稳定运行,为相关隔离开关的回路设计及运行维护提供一定参考。In view of the mis-opening and closing accident of a 1000 kV isolating switch during the local opening after the motor being burnt during the closing process,it analyzes the problems in the application range of auxiliary contacts in different time sequence and the control circuit of isolation switch with single-phase linkage and separate phase operation.It proposes solutions to strengthen the requirements of the isolating switch control circuit,clarify the action timing of the auxiliary contacts of the isolating switch,optimise the relationship between the self-holding control circuit and the motor power circuit,and standardise the operational processes of maintenance personnel,ensuring the safe and stable operation of the isolating switch,providing a reference for the circuit design and operation maintenance of similar isolating switches.

关 键 词：隔离开关 辅助触头 时序图 自保持 

分 类 号：TM564.1[电气工程—电器]