Electric Field Analysis on Buffer Layer of HV XLPE Power Cable by Finite Element Method

2018 2nd International Conference on Power and Energy Engineering

Zhang, Weiwei^1 ; Yan, Youxiang^2 ; Lin, Weiling^1 ; Li, Shanshan^1 ; Wang, Lei^3

School of Electrical Engineering and Automation, Xiamen University of Technology, No.600, Ligong Road, Jimei District, Xiamen, China^1

State Grid Xiamen Electric Power Supply Company, No.21 Hubinnan Road, Siming District, Xiamen, China^2

School of Environmental Science and Engineering, Xiamen University of Technology, No.600, Ligong Road, Jimei District, Xiamen, China^3

关键词: Distribution of electric fields;    Electric field analysis;    Electric field intensities;    Electric field simulation;    Electricity transmission;    Three-dimensional model;    Water-blocking;    XLPE power cables;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/192/1/012026/pdf
DOI  :  10.1088/1755-1315/192/1/012026

来源: IOP

【 摘 要 】

In recent years, white defects in power cable buffer layer has been discovered many times around the world. It would be a hazard to electricity transmission if these defects are not detected and solved in time, finally resulting in a power outage. In this paper, the selection of a physics field and the building of a three-dimensional model on cable electric field simulation are mentioned and improved. The distribution of electric field was calculated with two factors: the gap between water-blocking tape and aluminum sheath, the conductivity of water-blocking tape. The results demonstrated that the existence of the gap increases the electric field intensity in the air layer. Increasing the conductivity of water-blocking tape is beneficial to reduce the electric field intensity. It was explained that white defects is closely related to the air discharge in buffer layer.