强激光与粒子束2024，Vol.36Issue(5)：86-91,6.DOI:10.11884/HPLPB202436.230371
辅助放电针对气体间隙直流自击穿特性的影响
Influence of auxiliary discharge needle on direct current self-breakdown characteristics of the gas gap
摘要
Abstract
To reduce the jitter of the direct current self-breakdown voltage,and not affect the self-breakdown voltage as much as possible,an auxiliary discharge electrode structure with an auxiliary discharge needle implanted in the cathode center is designed based on the discharge gap of the annular electrode.The influence of the diameter,length and top chamfer of the auxiliary discharge needle on the field distortion is studied by electric field simulation.The direct current self-breakdown characteristics of the gas gap without and with auxiliary discharge needle in dry air and SF6 gas are studied by experiments.The results show that the smaller the diameter and the longer the length of the auxiliary discharge needle,the weaker the shielding effect of the electrode ring on the electric field,the stronger the field distortion intensity;the influence of the implatation of auxiliary discharge needle on the direct current self-breakdown of SF6 gas discharge gap is small,and with the increase of the field distortion coefficient,the percentage drop of self-breakdown voltage of dry air at the same air pressure is 2-3 times that of SF6 gas;the auxiliary discharge needle has a beneficial effect on the breakdown stability of dry air and SF6 gas discharge gap under the condition of direct current,the dispersion reduction percentage is about 25%higher than that without auxiliary discharge needle.关键词
气体间隙/辅助放电针/场畸变/直流自击穿电压/击穿电压分散性Key words
gas gap/auxiliary discharge needle/field distortion/direct current self-breakdown voltage/breakdown voltage dispersion分类
信息技术与安全科学引用本文复制引用
石凌,肖晶,梅锴盛,王戈飞,花见涛,谢霖燊,郭帆,贾伟,王海洋,陈志强,程乐,王艺,吴刚..辅助放电针对气体间隙直流自击穿特性的影响[J].强激光与粒子束,2024,36(5):86-91,6.基金项目
强脉冲辐射环境模拟与效应全国重点实验室基金项目 （）
