南方电网技术2024，Vol.18Issue(9)：38-46,9.DOI:10.13648/j.cnki.issn1674-0629.2024.09.005
场畸变气体火花开关电气性能与烧蚀过程研究
Research on the Electrical Performance and Ablation Process of Field Distortion Gas Spark Switches
摘要
Abstract
With the widespread application of gas spark switches,choosing gas spark switches with stable operation and long service life has become an important guarantee for the stable operation of pulse power systems.At present,domestic and foreign scholars have conducted a large amount of research on gas switches,but most of them are based on the impact of discharge conditions on the ablation of gas spark switches.Therefore,starting from practical engineering needs,this paper comprehensively studies the distribu-tion of self breakdown voltage,time delay jitter,and dispersion of gas spark switches under different working environments,as well as the phenomenon and mechanism of electrode ablation,as well as the change laws in macro/micro roughness.The results show that under the same gas pressure conditions,the dispersion of the breakdown voltage of the switch does not change significantly with the increase of electrode gap.As the working coefficient increases to 90%,the average value of the switch discharge delay remains basi-cally unchanged,but shows fluctuations of several nanoseconds.When the gap distance is 10 mm and the working coefficient is below 60%,the initial value of jitter and its reduction rate are much higher than other gaps.As the electrode spacing increases,the impact on the ablation of the electrode surface is relatively small,and the ablation degree of long gaps at low gas pressure is more significant than that of short gaps at high gas pressure.关键词
气体火花开关/时延抖动/电极烧蚀/宏/微观粗糙度Key words
gas spark switch/delay jitter/electrode ablation/macro/micro roughness分类
动力与电气工程引用本文复制引用
杨昊,孙凡,张璐,范华峰,宋治波,张昊天,陈苗苗..场畸变气体火花开关电气性能与烧蚀过程研究[J].南方电网技术,2024,18(9):38-46,9.基金项目
国家自然科学基金资助项目(52007138).Supported by the National Natural Science Foundation of China(52007138). （52007138）
