B5 - Design of reliable cabling systems

B - Fluid-structure Seabed Interaction

Status - published
Last updated on: 26/03/2020

Challenges/Opportunities

Degradation and failure of cables due to processes such as cable-seabed interactions affects ORE reliability and will be increasingly important for floating wind.

Solution

Better understanding of cable failure mechanisms including cable-seabed interaction is needed to support ORE expansion.

Context And Need

Cabling system can contribute to the total cost of the ORE system and can be a single point of failure. Therefore, a more cost effective cabling design will improve confidence in project financial projections. Existing cabling designs are generally inherited from the onshore/offshore wind farms or the offshore oil and gas sectors, which may not be effective for the floating ORE farms. More reliable cabling designs are needed for ORE systems by considering the cable damage hazards such as the exposure or suspensions caused by seabed variations, failures under extreme environmental loads. Detecting sensors are needed to monitor the electrical performance and physical condition of the cabling in a marine environment to reduce the O&M cost. Better cabling designs are needed to reduce the potential environmental impacts associated with thermal radiation and electromagnetic fields, etc.

Summary

Better understanding is needed of the cable mechanics, hydrodynamics, fluid-structure interaction and interaction with a moveable sea bed, thermal and electrical effects; revisit fundamentals of exposure and support to unlock more cost-effective designs.

Impact Potential

Impact on CAPEX as more reliable cabling will be designed and therefore the design can be less conservative. Impact on OPEX as the cabling damage hazards will be fixed and detecting system will be applied, leading to reduction of the O&M cost.

Research Status

Existing projects:

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Links to Industry Priorities:

Offshore-Wind-Innovation-Hub-Roadmap-Data-Understanding-of-root-cause-of-cable-failures

Offshore-Wind-Innovation-Hub-Roadmap-Data-Improved-standards-of-cables

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We would also like to invite UK researchers and industry stakeholders within ORE to submit links to research projects, both past and present, for inclusion within the landscape.

Therefore, if you have a UK-based research project within an area of ORE that you feel is relevant to a specific research theme or challenge within the Research Landscape, click HERE to submit your research project to the research landscape

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