One-dimensional particle-in-cell simulation on the influence of electron and ion temperature on the sheath expansion process in the post-arc stage of vacuum circuit breaker

2015 ◽  
Vol 22 (2) ◽  
pp. 023511 ◽  
Author(s):  
Yongpeng Mo ◽  
Zongqian Shi ◽  
Shenli Jia ◽  
Lijun Wang
2017 ◽  
Vol 24 (10) ◽  
pp. 103511 ◽  
Author(s):  
Shenli Jia ◽  
Yongpeng Mo ◽  
Zongqian Shi ◽  
Junliang Li ◽  
Lijun Wang

2021 ◽  
Vol 28 (12) ◽  
pp. 123507
Author(s):  
T. Gyergyek ◽  
S. Costea ◽  
K. Bajt ◽  
A. Valič ◽  
J. Kovačič

Author(s):  
Xiaolong Huang ◽  
Tao Sun ◽  
Yuezheng Wu ◽  
Shangyu Yang ◽  
Lihua Zhao ◽  
...  

Abstract The mechanical DC vacuum circuit breaker based on forced-over-zero technology will inevitably generate vacuum arc during the actual interrupting process. Since the current drop frequency is usually very high, the vacuum arc usually exhibits obvious transient characteristics, and the excessive transient characteristics may even become a key factor limiting the interruption capacity. In order to improve the mechanical DC vacuum circuit breaker arc interrupting capability, this paper establishes a vacuum arc transient magneto-hydrodynamic simulation model in the DC interrupting process and studies the plasma transport characteristics of the vacuum arc under different DC interrupting conditions. The results show that the ion pressure, ion density and ion temperature decrease with decreasing arc current, while the ion velocity gradually increases during the DC interrupting process. The increase in breaking current and current drop frequency will increase the ion density in the arc column at the moment of current crossing zero, resulting in more difficult vacuum arc interrupting. The results of the study can provide an important theoretical basis for a deeper understanding of the vacuum arc transient process in the DC interrupting process and improve the DC vacuum circuit breaker arc interruption capability.


2005 ◽  
Vol 12 (5) ◽  
pp. 052317 ◽  
Author(s):  
Albert Meige ◽  
Rod W. Boswell ◽  
Christine Charles ◽  
Miles M. Turner

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