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Thermal Rating of Offshore Wind Farm Cables Installed in Ventilated J-Tubes

Author

Listed:
  • Lei You

    (School of Electric Power Engineering, South China University of Technology, Guangzhou 510640, China)

  • Jian Wang

    (School of Electric Power Engineering, South China University of Technology, Guangzhou 510640, China)

  • Gang Liu

    (School of Electric Power Engineering, South China University of Technology, Guangzhou 510640, China)

  • Hui Ma

    (School of ITEE, The University of Queensland, Brisbane 4109, Australia)

  • Ming Zheng

    (Guangdong Electric Power Design Institute Co. Ltd. of China Energy Engineering Group, Guangzhou 510663, China)

Abstract

The section of submarine cable that is installed in enclosed J-tubes represents a possible thermal limiting point along the export circuits of offshore wind farms (OWFs). To obtain higher continuous thermal ratings for J-tube systems, a ventilated design, realized by allowing for the flow of natural wind into the J-tube through vents, is considered in this paper. To evaluate the performance of this forced-ventilation design, a coupled three-dimensional (3D) numerical model is constructed using the computational fluid dynamics (CFD) technique. The CFD method is first successfully tested through comparisons with existing methods for enclosed J-tubes. Then, the cable rating for the ventilated design is determined using the CFD model and compared with the rating for the enclosed case. The results show that the cooling effect from forced ventilation is obvious, and the cable rating could be increased by up to 27.5% for a wind speed of 10 m/s. This improvement in rating is especially significant for OWFs where the export circuit output is limited by the cable rating in enclosed J-tubes.

Suggested Citation

  • Lei You & Jian Wang & Gang Liu & Hui Ma & Ming Zheng, 2018. "Thermal Rating of Offshore Wind Farm Cables Installed in Ventilated J-Tubes," Energies, MDPI, vol. 11(3), pages 1-14, March.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:3:p:545-:d:134578
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    References listed on IDEAS

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    Cited by:

    1. Juan Carlos Del-Pino-López & Marius Hatlo & Pedro Cruz-Romero, 2018. "On Simplified 3D Finite Element Simulations of Three-Core Armored Power Cables," Energies, MDPI, vol. 11(11), pages 1-14, November.
    2. Gang Liu & Deming Guo & Pengyu Wang & Honglei Deng & Xiaobin Hong & Wenhu Tang, 2018. "Calculation of Equivalent Resistance for Ground Wires Twined with Armor Rods in Contact Terminals," Energies, MDPI, vol. 11(4), pages 1-24, March.
    3. Fan Yang & Ningxi Zhu & Gang Liu & Hui Ma & Xiaoyu Wei & Chuanliang Hu & Zhenhua Wang & Jiasheng Huang, 2018. "A New Method for Determining the Connection Resistance of the Compression Connector in Cable Joint," Energies, MDPI, vol. 11(7), pages 1-19, June.
    4. Dong, T. & Brakelmann, H. & Anders, G.J., 2023. "Analysis method for the design of long submarine cables," Renewable and Sustainable Energy Reviews, Elsevier, vol. 171(C).
    5. Heiner Brakelmann & George J. Anders & Piotr Zajac, 2021. "Fundamentals of the Thermal Analysis of Complex Arrangements of Underground Heat Sources," Energies, MDPI, vol. 14(20), pages 1-17, October.

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