高压电器2026，Vol.62Issue(1)：18-24,7.DOI:10.13296/j.1001-1609.hva.2026.01.003
新型加铁磁材料触头阴极斑点扩散研究
Research on Cathode Spots Diffusion of New Type of Contacts with Ferromagnetic Material
摘要
Abstract
In order to meet the interruption need of vacuum interrupter in the case of minimum arcing time,the simu-lation and experiment methods are used.A kind of contacts with ferromagnetic material is designed firstly in accor-dance with the the theory that the saddle-shaped axial magnetic field is beneficial to the diffusion of vacuum arc.Its axial magnetic field distribution characteristic is obtained though FEM simulation.Then,the diffusion process of the cathode spots between the new type of contacts and the traditional cup-shaped contacts with axial magnetic field is compared by using the power frequency triggered arc test platform.The experimental results show that the speed of the cathode spots of the contacts with ferromagnetic material is reduced when the cathode spots reaches half diameter position of the contact,keeping it relatively and stably burning at the edge of the contact.The density of the cathode spots at the edge of the contact is not much different from the central area and the area covered by the cathode spots is larger than that of the traditional cup-shaped contact.This paper mainly focuses on the arcing process of vacuum arc under partial arcing conditions,especially the initial diffusion stage,which can provide a certain reference for the de-sign of contacts used in vacuum circuit breakers with minimum arcing time.关键词
真空电弧/阴极斑点/纵向磁场/铁磁材料Key words
vacuum arc/cathode spots/axial magnetic field/ferromagnetic material引用本文复制引用
何俊磊,袁召,陈立学,莫文雄,刘俊翔,朱璐..新型加铁磁材料触头阴极斑点扩散研究[J].高压电器,2026,62(1):18-24,7.基金项目
国家重点研发计划(2018YFB0904300) （2018YFB0904300）
中国南方电网公司科技项目(GZHKJXM20180055).Project Supported by National Key R&D Program of China(2018YFB0904300),Science and Technology Project of China Southern Power Grid Co.,Ltd.(GZHKJXM20180055). （GZHKJXM20180055）
