Research on Improving Electric Field Distribution of Cable Terminal Based on Non-linear Materials

2018 2nd International Workshop on Renewable Energy and Development

能源学;经济学

Wang, Feifeng^1 ; Su, Yi^1 ; Huang, Huimin^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: Electric field distributions;    Electric stress distribution;    High electric fields;    High field strengths;    Insulation materials;    Maximum electric field;    Nonuniform electric field;    Uniform electric fields;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/153/4/042044/pdf
DOI  :  10.1088/1755-1315/153/4/042044

来源: IOP

【 摘 要 】

The electric field distribution of the power cable terminal is very complicated, and there is a large concentrated electric field at the interface between the stress cone and the main insulation. Such a high electric field will accelerate the aging of the insulation and lead to the breakdown of the insulation. In addition, the cable terminal need to be produced in the field, once the production process is poor, leaving bubbles or impurities and other defects in cable terminal, the electric field distribution of the cable terminal will be very uneven, local high field strength lead partial discharge, shorten the cable terminal life. In this paper, based on the non-linear insulation material can play a uniform electric field role in the non-uniform electric field, to explore the effect of non-linear SiC/silicone rubber composites on homogenizing electric field, the electric stress distribution of cables termination were simulated by COMSOL Multiphysics software. The results show that the maximum electric field strength at cable terminal decreases extremely when the 45wt% nano-SiC/silicone rubber composites were used.