Simulation of the temperature field distribution in medium-voltage vacuum interrupter and experimental verification

2nd International Conference on New Material and Chemical Industry

材料科学;化学工业

Sun, W.^1 ; Liu, H.L.^2 ; Cai, Y.G.^2 ; Li, Y.L.^3 ; Zhou, H.Y.^1 ; Zhou, Y.^1

Electric Power Research Institute of State Grid Heilongjiang Electric Power Company Limited, Harbin

150030, China^1

State Grid Heilongjiang Electric Power Company Limited, Harbin

150090, China^2

State Grid Heilongjiang Electric Power Equipment and Materials Company, Harbin

150000, China^3

关键词: Electrical coupling;    Experimental verification;    Finite element software;    Steady-state temperature;    Temperature field distribution;    Temperature rise;    Transient temperature rise;    Vacuum interrupters;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/292/1/012042/pdf
DOI  :  10.1088/1757-899X/292/1/012042

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The temperature field distribution in the medium-voltage vacuum interrupter decides the thermal stability of it. In this paper, the simulation model of a kind of 12kV/3150A/40kA medium-voltage vacuum interrupter is constructed, and conductive bridge model is used. This paper simulates current contraction and Joule heating between contacts, and solves relevant problems using the function of the thermal-electrical coupling in the finite element software ANSYS. Steady-state temperature rise of vacuum interrupter at rated current and transient temperature rise of vacuum interrupter at short-time withstand current are calculated. Influence of the contact situation on vacuum interrupter temperature rise is analyzed. Steady-state temperature rise experiments for the interrupter are carried out, and experiment results verify the accuracy of simulation results. The results are useful in the designing and optimizing of medium-voltage vacuum interrupter.