文档介绍：2007 年 1 月电工技术学报
第 22 卷第 1 期 TRANSACTIONS OF CHINA ELECTROTECHNICAL SOCIETY Jan. 2007
电弧电流以及纵向磁场对小电流真空电弧
特性影响的数值仿真
王立军贾申利史宗谦荣命哲
(西安交通大学电力设备电气绝缘国家重点实验室西安 710049)

摘要建立了小电流真空电弧的双温度磁流体动力学模型,根据该模型首先对小电流真空电
弧的基本特性进行了仿真研究,分析了不同电弧电流和不同纵向磁场强度对小电流真空电弧特性
的影响。仿真结果表明,电弧电流和纵向磁场对小电流真空电弧特性的影响是明显的,仿真结果
与实验结果基本吻合,尤其是离子温度的仿真结果与实验更加接近。另外,仿真结果还表明,对
于小电流真空电弧而言,随着纵向磁场的增大,电子温度逐渐增大,变化趋势与实验结果一致。
关键词:小电流真空电弧数值仿真纵向磁场电弧电流
中图分类号:TM561

Numerical Simulation of Effect of Arc Current and Axial ic
Field on Low Current Vacuum Arc Characteristics
Wang Lijun Jia Shenli Shi Zongqian Rong Mingzhe
(Xi’an Jiaotong University Xi’an 710049 China)
Abstract In this paper, two-temperature ohydrodynamic (MHD) model of low current
vacuum arc (LCVA) is established. According to this model, at first, fundamental characteristics of
LCVA are simulated and analyzed. Then, the influence of arc current and axial ic field on LCVA
characteristics is simulated and analyzed. Simulation results show that the influence of arc current and
axial ic field on LCVA characteristics is significant, and the simulation results are in agreement
with the experimental results, especially for ion temperature. In addition, simulation results also show
that for LCVA electron temperature increases with the increase of axial ic field strength, this
trend is also in agreement w