电器与能效管理技术Issue(24)：7-12,6.DOI:10.16628/j.cnki.2095-8188.2018.24.002
直动式双断点继电器不平衡燃弧现象研究
Study on Unbalanced Arcing Phenomena in Direct-Motion Double-Break Relay
摘要
Abstract
The phenomenon of unbalanced arcing in the process of breaking circuit which causes the electric erosion difference between two contacts appears in direct-motion double-break relay. The accumulation of erosin difference has a great impact on the electrical life and the reliability of the relay. In order to analyze the cause of unbalanced arcing, the arc images during the breaking process of a relay are captured by a high-speed camera to analyze the probability of unbalanced arcing. The influence of contact dynamic characteristics on unbalanced arcing is analyzed by the synchronous test of the contact motion and arc burning, and the simulation of magnetohydrodynamics ( MHD). The results show that the frequency of high energy arc appearing on the specific contact of the relay is higher, and the motion inconsistency of both contacts in the double-break relay is a main reason of unbalanced arcing.关键词
直动式双断点/不平衡燃弧/大功率直流继电器/电弧测试/电弧仿真Key words
direct-motion double-break/unbalanced arcing/high power DC relay/arc test/arc simulation分类
信息技术与安全科学引用本文复制引用
曹启纯,刘向军..直动式双断点继电器不平衡燃弧现象研究[J].电器与能效管理技术,2018,(24):7-12,6.基金项目
福州市科技局市校合作项目(2017-G-87) （2017-G-87）
