Statistical Simulation on the Random and Retrograde Motion of Single Cathode Spot of Vacuum Arc

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  • SHI Zongqian
    State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University
  • XIAO Jia
    State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University
  • JIA Shenli
    State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University
  • ZHANG Yue
    State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University
  • WANG Lijun
    State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University

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Abstract

  In this paper, a two-dimensional statistical model for a single cathode spot of vacuum arc with copper cathode has been established to simulate its random walk and retrograde motion under external transverse magnetic field. A parameter, k, was used to denote the different probabilities of cathode spot motion in Amperes direction and retrograde direction. With this model, the distribution of the probability density of cathode spot occurring in different area on cathode surface was simulated at different arcing time.<br>

Journal

  • Shinku

    Shinku 50 (5), 337-340, 2007

    The Vacuum Society of Japan

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