Mechanical and electrical performance analysis of high power subsea transmission cable

Some of the increasing demand for electricity is expected to be met offshore either by using renewable sources or by exploiting hydrocarbon reserves in stranded gas fields. This paper presents results from an investigation into transmission cable analysis for a floating offshore power station. Mechanical stresses experienced by high power cable in dynamic application are assessed with a view to determining fatigue life. In addition, large scale offshore power generation requires the development of new technologies for low-loss subsea electrical transmission systems. In order to investigate thoroughly the system electrical characteristics during the transmission process, there is a need for comprehensive analysis of its harmonic performance. The harmonic analysis of subsea power cable electrical performance can be demonstrated by mathematical models, the results of which are presented in this paper.