期刊论文

Gas Dischargeat Short Gap between Wire and J-Clamp:A Simulation Study

中文

真空科学与技术学报

1672-7126

2021

41

01

80-88

10.13922/j.cnki.cjvst.202003035

本校为第一机构

随着配网中大力开展10 kV线路带电作业,J型线夹被广泛用于断接火项目,然而导线-线夹间易形成短间隙气体放电。本文以J型线夹断接火作业为背景,建立二维动-静极板简化模型,采用有限元算法,利用动网格理论,仿真模拟了线夹闭合过程中导线与线夹间的短间隙气体放电现象,分析了首周期内最大电子密度随时间的变化情况,并对不同周期下,相同方向高电子密度区域（红区）转移过程进行了研究。仿真结果表明:同周期内火线正相位时电子密度最大值相比负相位时明显更大;红区在电压过零点前向另一极移动;随着周期推移,电压由正相位过零点时,红区消失时间及形成均是先滞后再提前,但两者时间差先递增后递减;由负相...

Argon discharge at the gap,between power-line and J-clamp in connecting live-wire,was empirically approximated,mathematically modeled,theoretically analyzed and numerically simulated in finite element method.The influence of the period and phase on the Max electron-density was investigated.The simulated results show that the period and phase have a major impact.Specifically,in the 1st-period,the Max e-density in positive phase is larger than that in negative phase,the high e-density (red) region moves to the other electrode before the voltage p...