loading page

Finite Element Method Assisted Analysis of Unbalanced Induced Current for AC Subsea Cable
  • +5
  • yan li,
  • Mao'tao Wang,
  • Haoyuan Song,
  • junjie qiao,
  • xinyue liu,
  • Yuxin Yang,
  • Xiaolong Zhang,
  • Wangbin Cao
yan li
North China Electric Power University - Baoding Campus
Author Profile
Mao'tao Wang
North China Electric Power University - Baoding Campus
Author Profile
Haoyuan Song
North China Electric Power University - Baoding Campus
Author Profile
junjie qiao
North China Electric Power University - Baoding Campus
Author Profile
xinyue liu
North China Electric Power University - Baoding Campus
Author Profile
Yuxin Yang
China Datang Corporation Science and Technology Research Institute
Author Profile
Xiaolong Zhang
Zhongtian Technology Submarine Cable Co.,Ltd
Author Profile
Wangbin Cao
North China Electric Power University - Baoding Campus

Corresponding Author:[email protected]

Author Profile

Abstract

Subsea cables suffer from induced current. There are usually two metal layers grounded at both ends for subsea cables, namely lead sheath and armor. It is observed that occasionally the induced current in lead sheath and armor layer between two ends are unbalanced. To study this phenomena, detailed modelling with both analytical approach and finite-element one is performed in this paper. Furthermore, mock-up experiment is carried out. It is shown that the unbalance between grounding ends is due to the inequal impedances of multi-grounding points and/or impedance variation of the semi-conductive layer between lead sheath and armor. Based on the analysis, a subsea cable status evaluation procedure is proposed.