EXPERIMENTAL STUDY OF INCOMING FLOW SHEAR AND ITS INFLUENCE ON PERFORMANCE OF WIND TURBINE

Niu Hongtao; Yang Congxin; Liu Wenjie

doi:10.19912/j.0254-0096.tynxb.2024-0606

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (8) : 77-84. DOI: 10.19912/j.0254-0096.tynxb.2024-0606

EXPERIMENTAL STUDY OF INCOMING FLOW SHEAR AND ITS INFLUENCE ON PERFORMANCE OF WIND TURBINE

Niu Hongtao^1,2, Yang Congxin^1,3, Liu Wenjie⁴

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Abstract

The cabin LiDAR is used to analyze the incoming wind shear of a wind farm in Qinghai-Tibet Plateau and its influence on the on the performance of wind turbine by taking a 3.3 MW horizontal axis wind turbine as the research object and using the method of outfield experiment. Our research results indicate that in the horizontal incoming flow direction, wind shear in plateau areas has certain diurnal variation characteristics, and is simultaneously affected by wind direction, wind speed and temperature. Moreover, the degree of their influence on wind shear varies at different times. high temperature will reduce the wind shear index,and the experimental wind turbine mainly lies in the area of high wind shear index. Through the analysis of five wind shear indices, it is found that the influence of each wind shear index on the power, rotational speed and torque of wind turbines varies significantly in different wind speed ranges. Under the wind speed ≤6 m/s,the output power,rotational speed and torque of the wind turbine under high wind shear are larger than that of low wind shear. Under the wind speed > 6 m/s, the output power and torque of the wind turbine under low wind shear are higher than that of high wind shear,but the difference of rotational speed under all wind shear is not very obvious.

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horizontal axis wind turbine / wind farm / lidar / wind shear / wind turbine performance

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Niu Hongtao, Yang Congxin, Liu Wenjie. EXPERIMENTAL STUDY OF INCOMING FLOW SHEAR AND ITS INFLUENCE ON PERFORMANCE OF WIND TURBINE[J]. Acta Energiae Solaris Sinica. 2025, 46(8): 77-84 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0606

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