An assessment of the influence of bonding on the harmonic performance of ac xlpe insulated subsea cable transmission systems

Abstract

This paper presents results from computer based simulations of the harmonic performance of high power AC XLPE-insulated cables in subsea transmission systems as used by offshore generators eg wind farms. The particular focus of this paper is on how the cable harmonic performance is influenced by the type of bonding method such as solid, single-point and cross bonding for the sheath and armour layers in the cable. The methods used to analyse the frequency response and to determine the harmonic resonances for each bonding arrangement are fully explained. Harmonic results obtained from the computer simulations for each different bonding method are presented and compared with a particular study on their performance at resonance. In the conclusions, the results obtained for the different transmission arrangements are discussed with due consideration of their impact for cable designers. © 2006 2006 Taylor and Francis Group LLC.