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On Wind Turbine Loads During Thunderstorm Downbursts in Contrasting Atmospheric Stability Regimes

Author

Listed:
  • Nan-You Lu

    (Department of Civil, Architectural and Environmental Engineering, The University of Texas at Austin, Austin, TX 78712, USA)

  • Patrick Hawbecker

    (Department of Marine, Earth, and Atmospheric Sciences, North Carolina State University, Raleigh, NC 27695, USA)

  • Sukanta Basu

    (Faculty of Civil Engineering and Geosciences, Delft University of Technology, 2628 CN Delft, The Netherlands)

  • Lance Manuel

    (Department of Civil, Architectural and Environmental Engineering, The University of Texas at Austin, Austin, TX 78712, USA)

Abstract

Severe winds produced by thunderstorm downbursts pose a serious risk to the structural integrity of wind turbines. However, guidelines for wind turbine design (such as the International Electrotechnical Commission Standard, IEC 61400-1) do not describe the key physical characteristics of such events realistically. In this study, a large-eddy simulation model is employed to generate several idealized downburst events during contrasting atmospheric stability conditions that range from convective through neutral to stable. Wind and turbulence fields generated from this dataset are then used as inflow for a 5-MW land-based wind turbine model; associated turbine loads are estimated and compared for the different inflow conditions. We first discuss time-varying characteristics of the turbine-scale flow fields during the downbursts; next, we investigate the relationship between the velocity time series and turbine loads as well as the influence and effectiveness of turbine control systems (for blade pitch and nacelle yaw). Finally, a statistical analysis is conducted to assess the distinct influences of the contrasting stability regimes on extreme and fatigue loads on the wind turbine.

Suggested Citation

  • Nan-You Lu & Patrick Hawbecker & Sukanta Basu & Lance Manuel, 2019. "On Wind Turbine Loads During Thunderstorm Downbursts in Contrasting Atmospheric Stability Regimes," Energies, MDPI, vol. 12(14), pages 1-30, July.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:14:p:2773-:d:249832
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    References listed on IDEAS

    as
    1. Hieu H. Nguyen & Lance Manuel, 2014. "Transient Thunderstorm Downbursts and Their Effects on Wind Turbines," Energies, MDPI, vol. 7(10), pages 1-22, October.
    2. Chungwook Sim & Sukanta Basu & Lance Manuel, 2012. "On Space-Time Resolution of Inflow Representations for Wind Turbine Loads Analysis," Energies, MDPI, vol. 5(7), pages 1-22, June.
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    Cited by:

    1. Nan-You Lu & Lance Manuel & Patrick Hawbecker & Sukanta Basu, 2021. "A Simulation Study on Risks to Wind Turbine Arrays from Thunderstorm Downbursts in Different Atmospheric Stability Conditions," Energies, MDPI, vol. 14(17), pages 1-28, August.

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