Session: 06-13-01 Towed and Undersea Cables and Pipes, Mooring, and Buoy Technology

Paper Number: 86113

86113 - Bending Study of Copper Conductors From Power Cables 

With the arising usage of offshore wind farms and other energy-producing systems, the submarine power cables, which are the key component in the systems, require more and more attention with regard to their structural, thermal and electrical integrity. The helix elements, including the core conductor in the center and especially the steel wires normally in the second last layer, play a crucial role in the structural responses of the whole cable and hence need to be further analyzed. This paper provides a simplified analytical model considering friction induced by stick-slip between the steel wires based on the comprehensive literature review and some assumptions, enabling the evaluation of the stress and strain of helix structures easily. Then, a numerical model is built through numerical software and its results are compared with the proposed analytical model. The results from the two methods agree with each other quite well, which proves the accuracy and avalibility of the analytical model. In addition, a series of parametric analysis is finished in which the influences of winding angle, friction coefficients, number of wires in one layer and the number of wire layers are studied. The analytical model might contribute towards more optimized design procedures for submarine power cables.

Presenting Author: Pan Fang Technology University of Delft

Authors:

Xiaoli Jiang Technology University of Delft
Hans Hopman Technology University of Delft
Yong Bai Zhejiang Univsersity
Pan Fang Technology University of Delft