一起断路器防跳寄生回路异常分析  

Analysis of Anti-trip Parasitic Circuit Abnormality of Circuit Breaker

作　　者：王肖 杨庆华 孙志凰 陈利 揣振国 WANG Xiao;YANG Qinghua;SUN Zhihuang;CHEN Li;CHUAI Zhenguo(Taizhou Power Supply Company,Taizhou 225300;Maintenance Company of State Grid Jiangsu Electric Power Co.,Ltd.,Nanjing 210000)

机构地区：[1]国网江苏省电力有限公司泰州供电分公司,江苏泰州225300 [2]国网江苏省电力有限公司检修分公司,江苏南京210000

出　　处：《电力安全技术》2020年第11期62-66,共5页Electric Safety Technology

摘　　要：以20 kV手车式断路器为例,介绍了断路器的结构,对比了断路器机构防跳和保护防跳的特点,分析了一起由于断路器防跳寄生回路引起的断路器合闸异常故障。通过对故障原因分析,研究了断路器机构防跳与跳位监视回路之间的配合问题,并给出三种解决方案,可以为变电运检人员日常维护检修提供借鉴。This article taking 20 kV handcart circuit breaker as an example,introduces the structure of the circuit breaker,compares the characteristics of circuit breaker mechanism anti-trip and anti-trip protection,analyzes an abnormal failure of the breaker closing caused by the anti-trip parasitic circuit of the breaker.By analyzing the cause of the failure,it studies the matching problem between circuit breaker mechanism anti-trip and trip position monitoring circuit,and presents three solutions,which can serve a reference for the routine maintenance and inspection of transformer substation inspection personnel.

关 键 词：断路器 防跳功能 寄生回路 保护防跳 机构防跳 

分 类 号：TM561[电气工程—电器]