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Ultimate loads and response analysis of a monopile supported offshore wind turbine using fully coupled simulation

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  • Morató, A.
  • Sriramula, S.
  • Krishnan, N.
  • Nichols, J.

Abstract

The current design of offshore wind turbines follows mainly the IEC 61400-3 standard. The list of Design Load Cases (DLCs) implied for this standard is comprehensive and the resulting number of time domain simulations is computationally prohibitive. The aim of this paper is to systematically analyse a subset of ultimate limit state load cases proposed by the IEC 61400-3, and understand the relative severity among the load cases to identify the most critical among them. For this study, attention is focused on power production and parked load cases. The analysis is based on the NREL 5 MW prototype turbine model, mounted on a monopile with a rigid foundation. The mudline overturning moment, as well as the blade-root in-plane and out-of-plane moments are taken as metrics to compare among the load cases. The simulations are carried out using the aero-hydro-servo-elastic simulator, FAST, and the key observations are thoroughly discussed. The DLC 1.6a is shown to be the most onerous load case. Although the considered load cases are limited to power production and idling regimes, the obtained results will be extremely useful for the substructure (monopile) design and for efficient reliability analysis subsequently, as is also shown partially by some previous studies.

Suggested Citation

  • Morató, A. & Sriramula, S. & Krishnan, N. & Nichols, J., 2017. "Ultimate loads and response analysis of a monopile supported offshore wind turbine using fully coupled simulation," Renewable Energy, Elsevier, vol. 101(C), pages 126-143.
    • Handle: RePEc:eee:renene:v:101:y:2017:i:c:p:126-143
    DOI: 10.1016/j.renene.2016.08.056
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    Citations

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    Cited by:

    1. Häfele, Jan & Hübler, Clemens & Gebhardt, Cristian Guillermo & Rolfes, Raimund, 2018. "A comprehensive fatigue load set reduction study for offshore wind turbines with jacket substructures," Renewable Energy, Elsevier, vol. 118(C), pages 99-112.
    2. Dai, Juchuan & Yang, Xin & Hu, Wei & Wen, Li & Tan, Yayi, 2018. "Effect investigation of yaw on wind turbine performance based on SCADA data," Energy, Elsevier, vol. 149(C), pages 684-696.
    3. Haselsteiner, Andreas F. & Frieling, Malte & Mackay, Ed & Sander, Aljoscha & Thoben, Klaus-Dieter, 2022. "Long-term extreme response of an offshore turbine: How accurate are contour-based estimates?," Renewable Energy, Elsevier, vol. 181(C), pages 945-965.
    4. Pim van der Male & Marco Vergassola & Karel N. van Dalen, 2020. "Decoupled Modelling Approaches for Environmental Interactions with Monopile-Based Offshore Wind Support Structures," Energies, MDPI, vol. 13(19), pages 1-35, October.
    5. Haselsteiner, Andreas F. & Thoben, Klaus-Dieter, 2020. "Predicting wave heights for marine design by prioritizing extreme events in a global model," Renewable Energy, Elsevier, vol. 156(C), pages 1146-1157.
    6. Liu, Min & Qin, Jianjun & Lu, Da-Gang & Zhang, Wei-Heng & Zhu, Jiang-Sheng & Faber, Michael Havbro, 2022. "Towards resilience of offshore wind farms: A framework and application to asset integrity management," Applied Energy, Elsevier, vol. 322(C).
    7. Zeng, Xinmeng & Shi, Wei & Michailides, Constantine & Zhang, Songhao & Li, Xin, 2021. "Numerical and experimental investigation of breaking wave forces on a monopile-type offshore wind turbine," Renewable Energy, Elsevier, vol. 175(C), pages 501-519.
    8. O'Leary, Kieran & Pakrashi, Vikram & Kelliher, Denis, 2019. "Optimization of composite material tower for offshore wind turbine structures," Renewable Energy, Elsevier, vol. 140(C), pages 928-942.
    9. Guo, Yaohua & Zhang, Puyang & Ding, Hongyan & Le, Conghuan, 2021. "Design and verification of the loading system and boundary conditions for wind turbine foundation model experiment," Renewable Energy, Elsevier, vol. 172(C), pages 16-33.

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