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Minimum Leading Edge Protection Application Length to Combat Rain-Induced Erosion of Wind Turbine Blades

Author

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  • Amrit Shankar Verma

    (Faculty of Aerospace Engineering, Delft University of Technology, Kluyverweg 3, 2629 HS Delft, The Netherlands
    SINTEF Ocean AS, Otto Nielsens veg 10, 7052 Trondheim, Norway)

  • Sandro Di Noi

    (SE Blades Technology, B.V. Jan Tinbergenstraat 290, 7559 ST Hengelo (Overijssel), The Netherlands)

  • Zhengru Ren

    (Department of Marine Technology, Norwegian University of Science and Technology (NTNU), 7052 Trondheim, Norway)

  • Zhiyu Jiang

    (Department of Engineering Sciences, University of Agder, 4879 Grimstad, Norway)

  • Julie J. E. Teuwen

    (Faculty of Aerospace Engineering, Delft University of Technology, Kluyverweg 3, 2629 HS Delft, The Netherlands)

Abstract

Leading edge erosion (LEE) repairs of wind turbine blades (WTBs) involve infield application of leading edge protection (LEP) solutions. The industry is currently aiming to use factory based LEP coatings that can applied to the WTBs before they are shipped out for installation. However, one of the main challenges related to these solutions is the choice of a minimum LEP application length to be applied in the spanwise direction of the WTBs. Generally, coating suppliers apply 10–20 m of LEP onto the blades starting from the tip of the blade using the “rule of thumb”, and no studies in the literature exist that stipulate how these LEP lengths can be calculated. In this study, we extend the scope of a recently developed long-term probabilistic framework to determine the minimum LEP application length required for WTBs to combat rain-induced erosion. A parametric study is performed where different wind turbines with varying power ratings of 2.1 MW to 15 MW at different Dutch sites ranging from inland to coastal are considered. The results of the study show that the LEP application length is sensitive to the choice of the site, as well as the turbine attributes. Further, LEP lengths for WTBs are found to be the highest for turbines installed at coastal sites and turbines with higher power ratings. A detailed investigation is further performed to check the sensitivity of the LEP application length with the wind turbine parameters. The results of the study are expected to provide guidelines to the industry for efficient repair strategies for WTBs.

Suggested Citation

  • Amrit Shankar Verma & Sandro Di Noi & Zhengru Ren & Zhiyu Jiang & Julie J. E. Teuwen, 2021. "Minimum Leading Edge Protection Application Length to Combat Rain-Induced Erosion of Wind Turbine Blades," Energies, MDPI, vol. 14(6), pages 1-26, March.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:6:p:1629-:d:517100
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    References listed on IDEAS

    as
    1. Amrit Shankar Verma & Zhiyu Jiang & Zhengru Ren & Zhen Gao & Nils Petter Vedvik, 2019. "Response-Based Assessment of Operational Limits for Mating Blades on Monopile-Type Offshore Wind Turbines," Energies, MDPI, vol. 12(10), pages 1-26, May.
    2. Mishnaevsky, Leon, 2019. "Repair of wind turbine blades: Review of methods and related computational mechanics problems," Renewable Energy, Elsevier, vol. 140(C), pages 828-839.
    3. Herring, Robbie & Dyer, Kirsten & Martin, Ffion & Ward, Carwyn, 2019. "The increasing importance of leading edge erosion and a review of existing protection solutions," Renewable and Sustainable Energy Reviews, Elsevier, vol. 115(C).
    4. Fraisse, Anthony & Bech, Jakob Ilsted & Borum, Kaj Kvisgaard & Fedorov, Vladimir & Frost-Jensen Johansen, Nicolai & McGugan, Malcolm & Mishnaevsky, Leon & Kusano, Yukihiro, 2018. "Impact fatigue damage of coated glass fibre reinforced polymer laminate," Renewable Energy, Elsevier, vol. 126(C), pages 1102-1112.
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    Cited by:

    1. Verma, Amrit Shankar & Yan, Jiquan & Hu, Weifei & Jiang, Zhiyu & Shi, Wei & Teuwen, Julie J.E., 2023. "A review of impact loads on composite wind turbine blades: Impact threats and classification," Renewable and Sustainable Energy Reviews, Elsevier, vol. 178(C).

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