直流真空断路器永磁斥力机构运动特性监测系统研究  

Research on Mechanical Characteristic Monitoring System of Permanent Magnet Repulsion Mechanism for DC Vacuum Circuit Breaker

作　　者：刘晓明 张煦松 姜文涛 宋柏阳 LIU Xiaoming;ZHANG Xusong;JIANG Wentao;SONG Boyang(State Key of Reliability and Intelligence of Electrical Equipment,Hebei University of Technology,Tianjin 300401,China;School of Mechanical Engineering,Tiangong University,Tianjin 300387,China)

机构地区：[1]河北工业大学省部共建电工装备可靠性与智能化国家重点实验室,天津300401 [2]天津工业大学机械工程学院,天津300387

出　　处：《高压电器》2024年第3期17-24,31,共9页High Voltage Apparatus

基　　金：河北省自然科学基金重点项目(E2020202086);中央引导地方科技发展专项(20ZYJDJC00060);国家电网有限公司科技项目(SGHEDK00DYJS2000285)。

摘　　要：针对短行程直流真空断路器永磁斥力机构运动速度快、动态参数多且难以精准监测的问题,文中设计了一种多参数动态特性监测系统。以400 V/400 A/25 kA直流真空断路器永磁斥力机构为研究对象,采用光耦隔离技术采集分合闸线圈电压模拟信号,同时采用传感技术和二阶滤波的方式对电流信号与位移信号进行降噪采集,并基于C#自主开发上位机显示界面,实现短行程快速操动机构多参数的实时同步显示。通过与高精度电流传感器和机械特性测试仪监测参数的比对分析可知,系统采集误差可控制在3.5%以内。In view of such issues as high movement speed,multiple dynamic parameters and difficulty in accurate monitoring of the permanent magnet repulsion mechanism for short stroke DC vacuum circuit breaker,a kind of mul-tiple parameter dynamic characteristic monitoring system is designed.The permanent magnet repulsion mechanism for 400 V/400 A/25 kA DC vacuum circuit breaker is taken as the research object,the optocoupler isolation technol-ogy is used to collect the voltage simulation signal of the opening and closing coil and,at the same time,the sens-ing technology and second-order filtering mode are used for noise reduction collection of the current and displace-ment signal.The upper computer display interface is developed independently based on the C#to achieve the real-time synchronous display of multiple parameters of the short stroke and fast operating mechanism.It is known through comparison and analysis of monitoring parameters of current sensor and mechanical characteristic tester that the collection error of the system can be controlled within 3.5%.

关 键 词：直流真空断路器 永磁斥力机构 机械特性 动态特性 光耦隔离 误差分析 

分 类 号：TM561.2[电气工程—电器]