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The consideration of atmospheric stability within wind farm AEP calculations

: Schmidt, J.; Chang, C.-Y.; Dörenkämper, M.; Salimi, T.; Teichmann, T.; Stoevesandt, B.

Fulltext (PDF; )

European Academy of Wind Energy -EAWE-:
WindEurope Summit 2016 : Hamburg, 27-29 September 2016
Bristol: IOP Publishing, 2016 (Journal of physics. Conference series 749)
Art. 012002, 10 pp.
Wind Europe Summit <2016, Hamburg>
Bundesministerium für Wirtschaft und Technologie BMWi
0325851B; Smart Wind Farms
Conference Paper, Electronic Publication
Fraunhofer IWES ()

The annual energy production of an existing wind farm including thermal stratification is calculated with two different methods and compared to the average of three years of SCADA data. The first method is based on steady state computational fluid dynamics simulations and the assumption of Reynolds-similarity at hub height. The second method is a wake modelling calculation, where a new stratification transformation model was imposed on the Jensen an Ainslie wake models. The inflow states for both approaches were obtained from one year WRF simulation data of the site. Although all models underestimate the mean wind speed and wake effects, the results from the phenomenological wake transformation are compatible with high-fidelity simulation results.