220kV变电站开关合闸异常事件分析  

Analysis on the Abnormal Event of Switch Closing in the 220kV Substation

作　　者：李宇昊 周刚 殷军 李伟琦 胡沛然 李洒洒 LI Yu-hao;ZHOU Gang;YIN Jun;LI Wei-qi;HU Pei-ran;LI Sa-sa(Jiaxing Power Supply Company,Jiaxing 314000,China;Jiashan Power Supply Company,Jiashan 314100,China)

机构地区：[1]国网浙江省电力有限公司嘉兴供电公司,浙江嘉兴314000 [2]国网浙江省电力有限公司嘉善供电公司,浙江嘉善314100

出　　处：《电气开关》2022年第3期89-92,共4页Electric Switchgear

摘　　要：本文针对某220kV变电站对开关开展机械特性试验时断路器合闸时间超标的异常事件进行分析与总结。介绍异常事件发生经过,通过现场试验分析,结合变电站3AQ型断路器的合闸数据及三相极柱解体情况,初步确定此次异常事件是由灭弧室内分闸位置弧触指与分闸位置静触头导电杆摩擦力过大引起的。为保证变电站运行的稳定性,避免此类事件的再次发生,本文对220kV变电站开关合闸异常事件的处理相关措施进行了相应总结。This paper analyzes and summarizes the abnormal event that the circuit breaker closing time exceeds the standard when the mechanical characteristic test of the switch is carried out in a 220 kV substation.The occurrence of the abnormal event is introduced.Through field test analysis, combined with the closing data of the substation 3 AQ circuit breaker and the disassembly of the three-phase pole, it is preliminarily determined that the abnormal event is caused by the arc contact finger and opening of the opening position in the arc extinguishing chamber.It is caused by excessive friction of the conductive rod of the static contact.In order to ensure the stability of substation operation and avoid the recurrence of such incidents, this article summarizes the relevant measures for handling abnormal events of 220 kV substation switch closing.

关 键 词：变电站 断路器 机械特性 

分 类 号：TM56[电气工程—电器]