TITLE:
Research on Simulation Methods of Electric Field Intensity on Surface of 10 kV Cable Joint
AUTHORS:
Ruxin Zhang, Jun Xiong, Zheng Wu, Lei Liao, Mingyan Wu, Gang Du, Xueyou Huang, Wenpei Jin, Haiming Li, Jian Zhang, Wenli Cheng, Binxian Lu
KEYWORDS:
Cable Joints, Electric Field Intensity, Equivalent Circuit Method, Field-Circuit Coupling Method, Finite Element Simulation Software
JOURNAL NAME:
Energy and Power Engineering,
Vol.12 No.4B,
April
10,
2020
ABSTRACT:
The electric field intensity (EFI) is important characteristic quantity for evaluating the internal insulation state of cable joints. Based on finite element method, this paper proposes two EFI research methods, field-circuit coupling method and equivalent circuit method. The average EFI of the inner surface of the outer semi-conducting shield can be calculated from the current in the measuring circuit. The relative error between these two methods is about 15%, which roughly proves the consistency of the two methods. Further practical application research enables online monitoring of cable joints.