494 / 2022-03-20 15:41:23

Investigation of the Marine Biofouling thermal effects on Offshore Floating Wind Platform Dynamic Power Cables

Offshore floating wind platform,dynamic cables,thermal distribution,marine biofouling

In the context of carbon peaking and carbon neutrality target, the development of offshore wind energy has received extensive attention and floating offshore wind platform has developed rapidly. Dynamic cable, as the connection between the static submarine cable and the floating wind turbine, is one of the critical equipment in the power transmission system. Compared with static submarine cables, dynamic cable is usually subjected to ocean currents, waves and marine biofouling due to its complex operating environment, which is therefore highly stressed by coupled electrical-thermal-mechanical constraints. Marine biofouling could increase environmental thermal resistance and reduce heat dissipation efficiency of dynamic cable. In order to explore this process, a 2D coupled electric-thermal-fluid modeling of a 35kV dynamic cable with ‘wet’ design is studied in this paper. Moreover, a numerical calculation of thermal circuit according to IEC60287 is carried out to verify the accuracy of the simulation model. The simulation results show significant temperature increases in the dynamic cable, depending on the thickness and overlaying proportion of the biofouling. By finite element method and analysis of dynamic cable current carrying performance with marine biofouling, this paper provides scientific support for dynamic cable design, operation and monitoring.