Wake Measurements at alpha ventus _ Dependency on Stability and Turbulence Intensity

The Science of Making Torque from Wind 2012

Westerhellweg, Annette^1 ; Cañadillas, Beatriz^1 ; Kinder, Friederike^1 ; Neumann, Tom^1

DEWI GmbH, Ebertstr. 96, Wilhelmshaven

D-26382, Germany^1

关键词: Atmospheric stability;    Maximum power;    Operational data;    Turbulence intensity;    Vertical wind shear;    Wake effect;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/555/1/012106/pdf
DOI  :  10.1088/1742-6596/555/1/012106

来源: IOP

【 摘 要 】

Wind and power deficit in the wake are assessed for the offshore wind farm Alpha Ventus. Operational data are evaluated for the power deficit in the wake of a single wind turbine and in a row of wind turbines. The wake of a single wind turbine is described by the maximum power deficit and expansion width of the wake. The impact of atmospheric stability in respect to vertical wind shear and turbulence intensity is assessed showing that wake effects are more pronounced under stable conditions.