Abstract
As a kind of clean and renewable energy, wind power has a wide development prospect. The aerodynamic performance and power generation efficiency of wind turbines are influenced by the gradient of wind turbine installation terrain. In this paper, the 5 MW wind turbine is taken as the object, and the influence characteristics of slope of hillside terrain on the power of wind turbine are studied through the simulation software STAR CCM+, and the influence characteristics of slope of hillside terrain on the power characteristics of wind turbine are obtained. The results show that when the wind turbine is installed on the top platform of the slope, the power of the wind turbine increases first and then decreases with the increase of the slope, power increased by 16.3% when the slope increased from 15 degrees to 52 degrees, decreased by 22.6% when the slope increased from 52 degrees to 60 degrees and reaches the peak value when the slope is about 52°. The appropriate slope can play a positive role in improving the power generation efficiency of the wind turbine. When the wind turbine is installed at the bottom of the slope, the slope will have an obstruction effect on the incoming flow velocity of the wind turbine, and the obstruction effect becomes more obvious with the increase of the slope, As the slope increased from 15 degrees to 45 degrees, power decreased by 6.7%, thus reducing the power generation efficiency of the wind turbine. Therefore, the influence of the slope on the aerodynamic performance of the wind turbine should be considered in the installation of the wind turbine. This study reveals the influence characteristics of terrain slope on wind turbine power characteristics, and provides a theoretical reference for making full use of terrain advantages to arrange wind turbines reasonably.
Published Version
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