中频下圆周曲面触头真空电弧特性研究  

Study on Intermediate Frequency Vacuum Arc Characteristics of Circumferential Surface Contact

作　　者：佟子昂 武建文[1] 金巍[1] 孙航 TONG Zi-ang;WU Jian-wen;JIN Wei;SUN Hang(School of Automation Science and Electrical Engineering,Beihang University,Beijing 100191,China;State Grid Fushun Development Zone Electric Power Company,Fushun 113001,China)

机构地区：[1]北京航空航天大学自动化科学与电气工程学院,北京100191 [2]国网抚顺市开发区供电公司,辽宁抚顺113001

出　　处：《真空电子技术》2019年第5期28-32,共5页Vacuum Electronics

基　　金：国家自然科学基金项目(51677002);民用飞机专项科研技术研究项目(MJ-2017-S-46)

摘　　要：目前交流中频(360~800Hz)供电体制成为航电系统的主要发展方向,新型的小体积、轻重量、大开断容量开关的需求更加迫切。真空开关凭借自身的开断原理和结构特点,具备应用于航空领域的优势。本文设计了一种新型真空灭弧室触头结构,研究了该圆周曲面触头真空灭弧室在中频的真空电弧特性,得到了触头直径为41mm的圆周曲面触头在小开距下的真空电弧形态的演变过程、电弧电压特性、开断性能及电极表面烧蚀程度。AC intermediate frequency(360~800 Hz)power supply system has become a major development direction of avionics system,and the demand for new type of small-volume,light-weight,large-capacity switch becomes increasingly urgent.Vacuum switch holds strong advantages in aviation field due to its breaking mechanism and other unique characteristics.In this paper,a new type contact structure of vacuum interrupter is proposed and its vacuum arc characteristics at intermediate frequency are studied.The arc mode evolution,the arc voltage characteristics,the breaking performance and the ablation of the circumferential surface contact with a diameter of 41mm are analyzed.

关 键 词：圆周曲面触头 中频真空电弧形态 电弧电压特性 开断能力 触头烧蚀程度 

分 类 号：TM561[电气工程—电器]