Open AccessThree-dimensional simulation analysis of electric field distribution at the middle joint of 110 kV cable with typical defects
Author(s) -
Shimei Xu,
Xiangqian Huang,
Song Yang,
Bin Yu,
Pengfei Gan
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/647/1/012034
Subject(s) - electric field , joint (building) , finite element method , mechanics , voltage , field (mathematics) , high voltage , distortion (music) , structural engineering , physics , engineering , electrical engineering , mathematics , quantum mechanics , pure mathematics , amplifier , cmos
The joint of high-voltage cable is the weakest part in the whole cable system, and the local defect of the middle joint will affect the distribution of the internal electric field. This paper establishes a three-dimensional model by finite element simulation software based on the electric field calculation equation in Maxwell equation system. The influence of typical defects such as impurity, scratch and air bubble on the electric field distribution in the middle joint is analysed. The results show that the internal defects of the middle joint may cause distortion of the local electric field strength in the middle joint, which may lead to deterioration of the insulation.