Turbulence measurements for wind-turbine siting on a complex terrain

摘要

Mean velocity and turbulence measurements were used for the wind-turbine siting. ^A scaled model of the site was tested in the UC Davis Atmospheric Boundary Layer wind tunnel. ^The surface of the model was scanned at various heights using hot-wire anemometry. ^Contour plots of the turbulence intensity and the wind power were generated, respectively. ^The pattern of the wind-tunnel data was verified by field measurements using a hot-film probe positioned on a 4 m mobile mast. ^The results were compared with the output of a widely used wind-resource analysis PC-program. ^It is concluded that turbulence measurements over a site, could indicate quickly and reliably, the suitable positions of the wind-turbines in a wind-farm, taking into consideration that turbulence does not require long-term measurement periods, as it is the case with wind speed. ^Also, wind-tunnel modelling is a valuable tool in the process of wind energy resource assessment and wind-turbine siting. ^(Author)