LOW VOLTAGE APPARATUS ›› 2021, Vol. 0 ›› Issue (8): 1-5.doi: 10.16628/j.cnki.2095-8188.2021.08.001

• Research & Analysis •     Next Articles

Influence of Contact Rotation and Breaking on Electric Field Between Electrodes in Vacuum

LIU Jiajia1, CAO Yundong1, FU Si2   

  1. 1. Institute of Electrical Apparatus New Technology and Application,Shenyang University of Technology, Shenyang 110870,China
    2. College of Chemical Process Automation,Shenyang University of Technology, Liaoyang 111003,China
  • Received:2021-04-10 Online:2021-08-30 Published:2021-10-14

Abstract:

This paper established a physical model of the space charge distribution between the contacts in the rotary breaking mode.Based on the Poisson equation,the finite element analysis method is used to calculate the electric field distribution between the contacts when the contacts rotate at different angles.The intensity change and the extreme value of the spatial electric field intensity are used to analyze the influence of the rotating motion of the contact on the electric field between the contacts during the breaking process in a vacuum state,and the reasons for the electric field intensity change between the contacts are explained from a microscopic point of view.The research results show that the rotating motion of the contact helps increase the space charge distribution area,reduce the distortion effect of the space charge on the external electric field,and reduce the extreme value of the space electric field.

Key words: vacuum switch, contact rotation, space charge distribution, electric field distortion

CLC Number: