Analysis of load capacity utilization for parallel cables

Authors

Chujun LUO, Central Southern China Electric Power Design Institute of China Power Engineering Consulting Group, Wuhan 430071 , China
Yulei FENG, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074 , China
Jian LI, Central Southern China Electric Power Design Institute of China Power Engineering Consulting Group, Wuhan 430071 , China
Xing LIAO, Central Southern China Electric Power Design Institute of China Power Engineering Consulting Group, Wuhan 430071 , China
Rui ZOU, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074 , China
Zhe ZHANG, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan 430074 , China

Keywords

parallel cables, load capacity utilization, current distribution, phase sequence arrangements, grounding mode

Abstract

Paralleling existing cables with new is an effective way to attain the lowcost capacity expansion, which can make a full utilization of existing cable's transmission capacity. However, due to the difference in coupling effects among parallel cables, the load current may be unevenly distributed to reduce the load capacity utilization. On the background, a load distribution calculation method of parallel cables is proposed in view of the the basic equations of multiloop electromagnetic coupling between cable conductors and metal sheaths. Then the load capacity utilization of parallel cables with different layouts and phase sequence arrangements are analyzed, and application suggestions of phase sequence optimization of parallel cables are given. At last, the analysis conclusion is verified by a numerical simulation. The results show that the optimized phase sequence arrangements can improve the load capacity utilization of parallel cables effectively and take full advantages of the transmission capacity of cables.

DOI

10.19781/j.issn.16739140.2021.01.014

First Page

127

Last Page

136

Recommended Citation

LUO, Chujun; FENG, Yulei; LI, Jian; LIAO, Xing; ZOU, Rui; and ZHANG, Zhe (2021) "Analysis of load capacity utilization for parallel cables," Journal of Electric Power Science and Technology: Vol. 36: Iss. 1, Article 14.
DOI: 10.19781/j.issn.16739140.2021.01.014
Available at: https://jepst.researchcommons.org/journal/vol36/iss1/14