Abstract
Effective and reliable utilization of wind power requires a deep understanding of both wind conditions and wind turbine wake behavior on the turbine site. Erecting turbines on mountainous areas is expected to provide favorable wind speeds due to the acceleration effect, and to minimize disturbance to humans due to the lower population density. However, studies of wind behavior on mountain area are relatively fewer than different types of complex terrains like hills and forests1). In this paper, the wind characteristics of two 1.67MW turbines located a wide area of steep mountains are analyzed by Supervisory Control and Data Acquisition (SCADA) system. The purpose of this analysis is to examine terrain effect and turbine wake effect quantitatively in each specific wind direction region. In terrain effects, it shows that slope angle and the distance to crest are key parameters for wind characteristics. For wake effect, it is shown that the measurement in assessing wake effects (40%), and power reduction (40%) were shown. The results are compared with the flow results by a combination midfidelity flow simulation software, WAsP Computational Fluid Dynamics (CFD) for topography, and superimposed wake models for wake effects, respectively.
