Measurements in support of wind farm simulations and power forecasts: The Crop/Wind-energy Experiments (CWEX)

The Science of Making Torque from Wind 2014

Takle, E.S.^1 ; Rajewski, D.A.^1,2,3 ; Lundquist, J.K.^2,3 ; Gallus, W.A.^4 ; Sharma, A.^5

Agronomy Department, Iowa State University, Ames, IA 50011, United States^1

Department of Atmospheric and Oceanic Sciences, University of Colorado, Boulder, CO 80309, United States^2

National Renewable Energy Laboratory, Golden, CO, United States^3

Geological and Atmospheric Sciences Department, Iowa State University, Ames, IA 50011, United States^4

Aerospace Engineering Department, Iowa State University, Ames, IA 50011, United States^5

关键词: Measurements of;    Nocturnal low-level jets;    Pressure perturbation;    Shear characteristics;    Vertical velocity;    Wake interactions;    Wind farm simulations;    Wind power production;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/524/1/012174/pdf
DOI  :  10.1088/1742-6596/524/1/012174

来源: IOP

【 摘 要 】

The Midwest US currently is experiencing a large build-out of wind turbines in areas where the nocturnal low-level jet (NLLJ) is a prominent and frequently occurring feature. We describe shear characteristics of the NLLJ and their influence on wind power production. Reports of individual turbine power production and concurrent measurements of near-surface thermal stratification are used to turbine wake interactions and turbine interaction with the overlying atmosphere. Progress in forecasting conditions such as wind ramps and shear are discussed. Finally, the pressure perturbation introduced by a line of turbines produces surface flow convergence that may create a vertical velocity and hence a mesoscale influence on cloud formation by a wind farm.