Simulation and Analysis of Electric Field for the Disconnector Switch Incomplete Opening Position Based on 220kV GIS

2018 2nd International Workshop on Renewable Energy and Development

能源学;经济学

Wang, Feifeng^1 ; Huang, Huimin^1 ; Su, Yi^1 ; Yan, Dandan^1 ; Lu, Yufeng^1 ; Xia, Xiaofei^1 ; Yang, Jian^1

Electric Power Research Institute of Guangxi Power Grid Co. Ltd., Nanning

530023, China^1

关键词: Comsol multiphysics;    Disconnector switches;    Electric field distributions;    Equipment defects;    Maximum electric field;    Moving contact;    Safe operation;    Simulation and analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/153/4/042043/pdf
DOI  :  10.1088/1755-1315/153/4/042043

来源: IOP

【 摘 要 】

It has accounted for a large proportion of GIS equipment defects, which cause the disconnector switches to incomplete open-close position. Once opening operation is not in place, it will arouse continuous arcing between contacts to reduce insulation strength. Otherwise, the intense heat give rise to burn the contact, which has a severe effect on the safe operation of power grid. This paper analyzes some typical defection cases about the opening operation incomplete for disconnector switches of GIS. The COMSOL Multiphysics is applied to verify the influence on electric field distribution. The results show that moving contact out shield is 20 mm, the electric field distribution of the moving contact surface is uneven, and the maximum electric field value can reach 9.74 kV/mm.