QuWind100

© Stegert/Leiding

Quantitative wind climatology for wind energy applications at heights above 100 m

Subproject TUD: Modeling the influence of different surface types as well as the time of day and season on the wind field

Project duration: January 2016- February 2019

Project description

The average hub height of modern wind turbines has increased to over 100 m in order to optimize the wind energy yield at a site. High turbines can also be used to open up areas with a higher level of documentation for wind energy use, e.g. forests or areas close to cities. Existing wind atlases and simple extrapolation methods, such as the logarithmic wind profile, are no longer applicable for these hub heights and for the complex environmental conditions of turbine sites. Here, daily and seasonal influences on the wind field must be taken into account, e.g. so-called low level jets. There is currently a lack of wind climatologies for heights above 100 m for various surface types that can be made available to all potential users in a quality-assured form. The main objective of the research work is therefore to derive a climatological wind database for heights between 100 m and 200 m. The newly created and evaluated wind climatology for hub heights > 100 m using an innovative model chain leads to a comprehensive improvement in the accuracy of wind energy yield estimates in Germany. At the same time, the consideration of low level jets and the comprehensive provision of multi-year wind time series improve the statistical assessment of the potential risk of local extreme winds and strong turbulence on wind turbines. There is also an urgent need for wind maps in the federal states with regard to their spatial planning for the expansion of wind energy.

Working group at the Chair of Meteorology, TU Dresden (network coordinator QuWind100):
Dr. Manuela Starke (Research Associate), Dipl.-Hydrol. Philipp Stahn, Dr. Astrid Ziemann (scientific project support), Prof. Dr. Christian Bernhofer (project manager)

Cooperation with the German Weather Service (Offenbach), sub-project "Mesoscale forcing from climate projections and evaluation": Dipl.-Met. Tina Leiding, Dr. Andreas Walter, Dipl.-Met. Johann-Dirk Hessel

Cooperation with the application partner EVO AG (Offenbach): Dr. Miriam Bremermann

Publications

Ziemann, A., Starke, M., and Leiding, T., 2019: Sensitivity of nocturnal low-level jets to land-use parameters and meteorological quantities, Adv. Sci. Res., 16, 85-93, DOI: 10.5194/asr-16-85-2019.

M.Barth, A. Ziemann, C. Bernhofer, J.D. Hessel, A. Walter, J. Namyslo: Model concept for the development of a quantitative wind climatology for wind energy applications
at altitudes above 100 m. (Poster DACH conference, Berlin, 2016)

Astrid Ziemann, Manuela Starke, Tina Leiding: Low-level jets and their possible impact on wind climatology at hub heights of wind turbines (Poster EMS Conference, Budapest/Hungary, 2018)

Final report: Starke, Manuela, Leiding, Tina, Stahn, Philipp, Gassdorf, Thomas, Haller, Michael, Walter, Andreas, Bernhofer, Christian, Ziemann, Astrid, 2019: Quantitative wind climatology for wind energy applications at heights above 100 m (QuWind100) : Final report on the joint project: Project duration: 01.01.2016-28.02.2019, in German DOI: 10.2314/KXP:1685669980

Data retrieval via CDC at DWD:
https://www.dwd.de/DE/leistungen/quwind100/qu-wind_100.html
https://opendata.dwd.de/climate_environment/CDC/grids_germany/multi_annual/wind_parameters/Project_QuWind100/
 

Pictures of the experiment