基于自然换流的无弧继电器无弧控制系统及性能  

Arc-Free Control System and Performance of Arc-Free Relay Based on Natural Current Commutation

作　　者：李文华[1] 姜泊 葛世伟 赵正元 王忠 LI Wenhua;JIANG Bo;GE Shiwei;ZHAO Zhengyuan;WANG Zhong(State Key Lab of Reliability and Intelligence of Electrical Equipment,Hebei University of Technology,Tianjin 300401,China;Key Enterprise Research Institute of Low Voltage Intelligent Equipment New Technology,Zhejiang Tengen Electrics Co.,Ltd.,Wenzhou Zhejiang 325000,China;Xi′an Railway Signal Co.,Ltd.,CRSC(Xi′an)Rail Transit Industry Group Co.,Ltd.,Xi′an Shaanxi 710000,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,天津北辰300401 [2]浙江天正电气股份有限公司低压智能装备新技术重点企业研究院,浙江温州325000 [3]通号(西安)轨道交通工业集团有限公司西安铁路信号有限责任公司,陕西西安710000

出　　处：《中国铁道科学》2023年第3期189-200,共12页China Railway Science

基　　金：河北省自然科学基金资助项目(E2020202221,E2020202142)。

摘　　要：为对电磁继电器进行无弧控制,基于自然换流原理分析无弧控制系统的拓扑和工作原理,给出无弧控制下延时和阈值电流等时序参数的选取原则;在形成无弧继电器样机基础上,通过搭建交直流380 V的试验系统,对无弧继电器进行试验测试;通过典型负载下的寿命试验,研究影响无弧继电器性能的关键参数;对无弧继电器的故障类型进行分析,给出危害较大的故障如短路故障保护方法,并进行试验验证。结果表明:无弧控制虽然使得继电器吸合时间增大4 ms,释放时间增大10 ms,减缓了动作速度,但解决了电弧烧蚀问题,将继电器的电寿命提高1倍;无弧继电器性能主要受机械触点接触电阻和电流转移速度的影响;无弧继电器具有较好的可靠性,且在短路情况下具有较高的安全性。In order to achieve the arc-free control of the electromagnetic relay,the topology and working principle of the arc-free control system were analyzed based on the principle of natural current commutation,and the selection principles of timing parameters such as delay time and threshold current under arc-free control were given.Based on the prototype of arc-free relay,an AC/DC 380 V test system was built to experimentally test the arc-free relay.Through the life test under typical load,the key parameters affecting the performance of the arc-free relay were analyzed.The fault types of arc-free relay were analyzed,and the protection methods for more harmful faults such as short circuit faults were given and verified by experiments.The test results show that although the arc-free control increases the relay′s pull-in time by 4 ms and release time by 10 ms,slowing down the action speed,it solves the problem of arc erosion and improves the electrical life of the relay by one time.The performance of arc-free relay is mainly affected by the mechanical contact resistance and current transfer speed.Arc-free relay has good reliability and safety in short circuit.

关 键 词：继电器 无弧控制 自然换流 时序控制 电流转移 性能分析 

分 类 号：TM581.3[电气工程—电器] U284.71[交通运输工程—交通信息工程及控制]