Analysis of Relay Contact Sticking Fault in Circuit Breaker Control System

doi:10.16628/j.cnki.2095-8188.2023.01.012

Abstract

Abstract:

Electromagnetic relay is commonly used in tripping on/off a circuit breaker,where it can be used as a circuit holder.A case of the relay contact sticking fault found in the relay substitution test process is analyzed.It is demonstrated that the relay structure design caused more bounces and longer time after power on.The test shows that the relay bounce may lead to the contact sticking when the working current of tripping the circuit breaker closing coil is large.As a conclusion,the relay used in tripping on/off circuit breaker circuits shall check its bounce time and bounce count to avoid sticking problem.

Key words: circuit breaker, electromagnetic relay, contact bounce, contact sticking

CLC Number:

TM774

SHI Jian, ZHOU Zhaoqing, YUE Feng. Analysis of Relay Contact Sticking Fault in Circuit Breaker Control System[J]. LOW VOLTAGE APPARATUS, 2023, 0(1): 69-72.

Figures/Tables 6

References 19

[1]	LIU L, YANG W, CHEN L, et al. Contact bounce model considering arc ignition for relay contact reliability evaluation[C]// 2021 3rd International Conference on System Reliability and Safety Engineering (SRSE), 2021:94-98.
[2]	LIU L, YANG W, CHAI Y, et al. A new theoretical model to study the closing bounce characteristics of the electromagnetic relay under capacitive loads[J]. IEEE Transactions on Components,Packaging and Manufacturing Technology, 2020, 10(8):1358-1366. doi: 10.1109/TCPMT.2020.3011515
[3]	BARKAN P. A study of the contact bounce phenomenon[J]. IEEE Transactions on Power Apparatus and Systems, 1967, PAS-86(2):231-240. doi: 10.1109/TPAS.1967.291840
[4]	XIONG J, HE J J, ZANG C Y. A dynamic model of electromagnetic relay including contact bounce[C]// 2008 International Conference on Electrical Machines and Systems, 2008:4144-4149.
[5]	姚芳, 李志刚, 李玲玲, 等. 继电器接触可靠性及失效的研究[J]. 低压电器, 2004(2):11-14.
[6]	唐钰杰. 触点弹跳对电磁继电器寿命的影响及优化设计[J]. 机电元件, 2017(3):13-18.
[7]	佘冰.10 kV高压断路器弹簧机构分合闸线圈烧毁故障原因及处理措施[J]. 技术与市场, 2019, 22(12):74-75,78.
[8]	荣军.500 kV断路器手合失败故障的分析[J]. 电工技术, 2015(4):61-62.
[9]	张宗伟. VS1型真空断路器合闸线圈烧毁故障处理及对策[J]. 高压电器, 2010, 46(5):89-91.
[10]	谭志奇.10 kV弹簧操作机构断路器跳合闸线圈烧毁原因分析及对策[J]. 电力学报, 2006, 21(1):91-92,95.
[11]	秦晓辉. 微机保护电磁兼容研究及变电站内电磁干扰的传播途径[D]. 北京: 华北电力大学, 2003.
[12]	张建兴, 茹昉聪. 一起断路器事故分析及预防措施[J]. 中国电业(技术版), 2011(8):5-7.
[13]	张冠生. 电器理论基础[M].修订本. 北京: 机械工业出版社,1997.
[14]	李震彪, 张欢, 梁盼望, 等. 电源电压对继电器闭合与分断时间及触点弹跳的影响[J]. 华中科技大学学报:自然科学版, 2008, 36(12):104-107.
[15]	王超. 浅谈继电器触点二次接通的产生及优化设计[J]. 机电元件, 2017(4):52-54.
[16]	石建, 吴凯, 岳峰. 用于继电保护开出回路高加速寿命试验问题的分析与改进方法[J]. 电器与能效管理技术, 2019(3):68-71.
[17]	石建, 徐丽青, 岳峰. 继电保护用开入电路仿真计算与改进[J]. 电器与能效管理技术, 2017(12):55-57.
[18]	张旭, 郑哲, 罗福彪, 等. 小型继电器触点粘接失效现象的复现与失效机理[J]. 电器与能效管理技术, 2021(10):52-56.
[19]	周学, 周雨馨, 郭振国, 等. 常开型继电器触点回弹抑制仿真与试验研究[J]. 电器与能效管理技术, 2019(5):23-27.

继电器	抖动次数/次	抖动时间/ms
A	15~25	1.97~2.50
B	6~7	<0.50
C	5~7	<0.50

继电器类型	推动块长/mm	推动块厚/mm	推动方式
A	22	0.6	平直推动
B、C	9.1	1.3	旋转推动