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WIEN - system for wind- and energy yield assessments

(accredited acc. to DIN EN ISO/IEC 17025:2005)

Accredited system for wind- and energy yield assessments for WInd ENergy turbines

On the basis of the model system WIEN, the EuroWind GmbH is offering wind resource- and energy yield assessments as well as area-wide wind potential studies for your wind farm project in Germany and abroad. The computation procedure has been developed in order to fulfill the higher requirements for energy yield assessments at complex sites - on- and offshore.

WIEN is internationally accredited according to DIN EN ISO/IEC 17025:2005 and is successfully applied for climatological wind resource- and energy yield assessments since 1997 to improve your strategy in the field of designing and financing planned wind farm projects.

Learn more about our model system WIEN:

Advantages
Processes
Results
Validation

The advantages of WIEN at a glance
Bancable wind resource- and energy yield assessments by application of the internationally, according to DIN EN ISO/IEC 17025:2005 accredited system WIEN
Almost unlimited applicability of WIEN also at sites in strongly structured terrain or at exposed offshore sites
Generation of energy yield assessments also without time-consuming on-site wind measurements
Implementation of a three-dimensional wind field simulation model for the unlimited applicability also in structured low mountain ranges
High accuracy of prognosis by calibrating the simulation results with measured wind statistics
Generation of area-wide regional wind power potential maps for individual areas
Energy yield assessments for any hub height, type of turbine or wind farm design
World-wide climatological referencing of annual measurements
High resolution calculation of the vertical wind profile for the optimization of the hub height
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Procedures

The prognosis system is based on the combination of a complex three-dimensional wind field simulation model with a statistic-dynamic climate model. This comprehensive procedure is able to forecast the climatological wind conditions at any site, even without the availability of on-site long-term wind measurements.

The physics of the flow model allows taking into consideration the influence of the topography on the wind field in the boundary layer for different weather situations. The ground characteristics are having a considerably higher influence on the wind field during high pressure weather conditions with low wind speeds, as, for example, during a distinct weather situation with westerly winds. The wind energetic characteristics and energy yields can be computed for the site analysis for optional turbines and hub heights (Figure 1).

Comprehensive three-dimensional wind field simulations of the prognosis system WIEN allow to provide wind energy yield assessments as well for large hub heights of more than 100 meters as for sites in complex low mountain ranges or for exposed offshore sites.

Figure 1: Schematic illustration of the wind energy simulation model WIEN
To zoom the view, please click on the picture
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Results

Besides the climatological wind resource- and energy yield assessments for individual wind farms we can also provide an identification of the existing profitable areas for your individual area of investigation. Especially for areas which are, up to now, poorly developed in terms of wind energy, this is offering a cost-efficient and time-saving possibility to identifyt appropriate sites (figure 2).

Figure 2: Regional, high resolution wind power potential map (region of the Taunus) for 100 m height above ground
To zoom the view, please click on the picture
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Validation

The very high quality of the prognosis of our model system WIEN is proven by comprehensive validation results. The forecast quality is ensured by the individual calibration of the simulation results with measured wind statistics (figure 3). The best results are achieved by using wind statistics from close to the ground.

Figure 3: Comparison of the site-related EuroWindindex with energy yield data of a 1.5 MW turbine with a hub height of 98 m.
To zoom the view, please click on the picture
 

If we have sparken your interest, please do not hesitate to contact us. We would be pleased to explain you the specialities and possibilities of our range of services and our internationally accredited system WIEN for wind energy yield assessments.

Call +49 221 57 95 60-09 for personal assistence!








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