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INTER-ARRAY CABLES 1 1


Thermal analysis to determine limiting cable rating


JDR ANALYSIS EXPERIENCE JDR has a wealth of experience in subsea umbilical and power cable design, directly applicable to the supply of power cables to the renewable wind industry. Dynamic global finite element analysis (FEA) for complex umbilical systems and local thermal FEA of umbilical cross sections for complex temperature distribution in the oil & gas industry which can be transferred directly to renewable cable systems.


2 2


Electromagnetic analysis


The insight gained on tidal generation projects is also applicable to the offshore renewable wind industry, in particular wrt stability in extreme tidal environments, routing optimisation for export and array cables and thermal constraints due to cable operating losses. For one such project, JDR utilised dynamic power generation data and cyclic environmental loading within the thermal analysis to optimise cable ratings for cables laid in close proximity.


The technical services team has a strong background in dynamic analysis, cable design and development for the offshore subsea industries.


3 3


Electromagnetic interference analysis


ARRAY CABLES – PAST, PRESENT, FUTURE JDR has supplied array cables with both copper and aluminium power cores to many wind farm projects around the UK and Europe. Key areas of experience for renewables include: • Design and analysis for BSH 2K environmental criteria for cables installed in offshore Germany territories


• Optimisation of cable cross sections for intended ratings, including consideration of cyclic loading and losses


• Cable proximity studies at sub stations to maintain cable ratings


4 4


Electromagnetic analysis to determine flux density of buried cable


In the future, it is envisaged that the core cross section design specification will be key in reducing the LCOE, by considering CAPEX material content and OPEX heating losses and optimising in particular wrt dynamic cyclic loading due to the stochastic nature of the wind conditions upon the generating capability.


JDR PRODUCTS AND SERVICES RANGE • FEED design and analysis • Design and manufacture of power cables and umbilcals


• Global Services installation aftermarket support


JDR Cables 5


Component level stress analysis


5 www.windenergynetwork.co.uk 61


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