Dynamic stressing of subsea cable insulation for floating offshore wind applications

对于浮式海上风电场，由于潮流和浮式平台的动态行为，电缆会受到机械弯曲。电缆可能会因机械弯曲而对接头中的接口造成不可逆的损坏，这会导致电树枝的加速生长，从而缩短资产寿命。然而，很少有知识的后果，低频振动，或反复压缩和延长电缆。该项目将确定动态应力是否会加速树木生长，从而确定浮动海底电缆特有的新故障机制。在此领域生成的任何测试数据都将是全新的，并将能够促进对动态电缆中资产可靠性的理解。拟议项目与EPSRC“能源”主题下的“电力网络和存储”和“可再生能源”子主题相关。

For the floating offshore wind sector, cables are subjected to mechanical flexure due to the dynamic behaviour of the tidal current and floating platform. Cables could suffer irreversible damage of interfaces in joints through mechanical flexing, which lead to accelerated growth of electrical treeing and thereby shortening the asset lifetime. However, there is little knowledge on the consequences of low frequency vibration, or repeated compression and extension of cables. This project will determine whether dynamic stress could accelerate tree growth, which lead to the identification of a new failure mechanism specific to floating submarine cables. Any test data generated in this space would be entirely new and will be able to advance understanding of asset reliability in dynamic cables. The proposed project is relevant to sub-themes of 'Power Networks and Storage' and 'Renewable Energy' under EPSRC's 'Energy' theme.