Numerical simulation of vacuum arc and anode thermal process during the interruption process of HVDC vacuum switch with forced current zero

被引：0

作者：

Jiang, Jing ^{[1
]}

Wang, Lijun ^{[1
]}

Yang, Ze ^{[1
]}

Li, Jiagang ^{[1
]}

Luo, Ming ^{[1
]}

Jia, Shenli ^{[1
]}

Shi, Zongqian ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian, Peoples R China

来源：

29TH INTERNATIONAL SYMPOSIUM ON DISCHARGES AND ELECTRICAL INSULATION IN VACUUM (ISDEIV 2020) | 2021年

基金：

中国国家自然科学基金;

关键词：

Numerical simulation; DCVA; anode thermal process; DC interruption; EXPANSION; DESIGN;

D O I：

10.1109/ISDEIV46977.2021.9587123

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

It is of great significance to study DC vacuum arc (DCVA) characteristics and anode thermal process in DC interruption based on artificial current zero method, which have great influence on the breaking performance of DC vacuum circuit breaker (DCVCB). In this paper, with the consideration of the effect of realistic magnetic field and hysteresis during the DC breaking process, the dynamic characteristics of DCVA and anode thermal process were simulated and analyzed. Firstly, a DCVA dynamic model is established under the commercial cup-shaped electrodes. The DCVA characteristics at seven different moments during the DC breaking process with a current falling frequency of 1kHz were simulated, which were combined to describe the dynamic characteristics of DCVA. The distribution of arc plasma's parameters at seven different times, such as ion pressure and axial current density, was obtained by the simulation. Furthermore, a 2-D transient axisymmetric model of anode thermal process in DCVA is established. Through the numerical simulation, anode temperature distribution along radial and axial directions during the DC breaking process can be obtained.

引用

页码：290 / 293

页数：4

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