Articles | Volume 6, issue 2
Wind Energ. Sci., 6, 427–440, 2021
https://doi.org/10.5194/wes-6-427-2021

Special issue: Wind Energy Science Conference 2019

Wind Energ. Sci., 6, 427–440, 2021
https://doi.org/10.5194/wes-6-427-2021

Research article 18 Mar 2021

Research article | 18 Mar 2021

Method for airborne measurement of the spatial wind speed distribution above complex terrain

Christian Ingenhorst et al.

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Cited articles

Abichandani, P., Lobo, D., Ford, G., Bucci, D., and Kam, M.: Wind Measurement and Simulation Techniques in Multi-Rotor Small Unmanned Aerial Vehicles, IEEE Access, 8, 54910–54927, https://doi.org/10.1109/ACCESS.2020.2977693, 2020. 
Ayala, M., Maldonado, J., Paccha, E., and Riba, C.: Wind Power Resource Assessment in Complex Terrain: Villonaco Case-study Using Computational Fluid Dynamics Analysis, Enrgy. Proced., 107, 41–48, https://doi.org/10.1016/j.egypro.2016.12.127, 2017. 
El Bahlouli, A., Rautenberg, A., Schön, M., zum Berge, K., Bange, J., and Knaus, H.: Comparison of CFD Simulation to UAS Measurements for Wind Flows in Complex Terrain: Application to the WINSENT Test Site, Energies, 12, 1992, https://doi.org/10.3390/EN12101992, 2019. 
Fördergesellschaft Windenergie und andere Dezentrale Energien: Technische Richtlinien für Windenergieanlagen: Bestimmung von Windpotenzial und Energieerträgen, FGW e.V., Berlin, 2017. 
Holland, G. J., Webster, P. J., Curry, J. A., Tyrell, G., Gauntlett, D., Brett, G., Becker, J., Hoag, R., and Vaglienti, W.: The Aerosonde Robotic Aircraft: A New Paradigm for Environmental Observations, B. Am. Meteorol. Soc., 82, 889–901, https://doi.org/10.1175/1520-0477(2001)082<0889:TARAAN>2.3.CO;2, 2001. 
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Short summary
Wind farm sites in complex terrain are subject to local wind phenomena, which are difficult to quantify but have a huge impact on a wind turbine's annual energy production. Therefore, a wind sensor was applied on an unmanned aerial vehicle and validated against stationary wind sensors with good agreement. A measurement over complex terrain showed local deviations from the mean wind speed of approx. ± 30 %, indicating the importance of an extensive site evaluation to reduce investment risk.