RESEARCH ON OPTIMIZATION OF WIND TURBINE NOISE REDUCTION PERFORMANCE BASED ON WINDING HELICAL WIRES TO TOWER

Zhang Xiaoxue; Gao Zhiying; Su Rina; Zhang Cuiqing; Wang Jianwen

doi:10.19912/j.0254-0096.tynxb.2021-1449

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (8) : 422-429. DOI: 10.19912/j.0254-0096.tynxb.2021-1449

RESEARCH ON OPTIMIZATION OF WIND TURBINE NOISE REDUCTION PERFORMANCE BASED ON WINDING HELICAL WIRES TO TOWER

Zhang Xiaoxue^1,2, Gao Zhiying^1-3, Su Rina^1,2, Zhang Cuiqing^1,2,4, Wang Jianwen^1,2

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Abstract

To reduce the noise pollution caused by wind turbines, a noise reduction scheme is proposed in which helical wires are positioned on the surface of the towers of distributed wind turbines. Taking the S2030 airfoil wind turbine as the calculation model, orthogonal test is carried out with helical wires height, pitch, number of screw heads, coverage and rotation direction as factors, and the total sound pressure level of near-wake radiated noise as evaluation index. LES/FWH method is used for numerical calculation and analysis under rated operating conditions on the ANSYS Fluent numerical simulation platform. The results show that the helical wires height h is 5.5 mm, the pitch P/D is 0.5, the number of screw heads N is 4, the coverage area is all, and the anticlockwise rotation is the optimal combination. The influence degree of various factors on the total sound pressure level is as follows： pitch>height>coverage>number of screw heads>rotation direction. The tower winding helical wires can effectively reduce the sound pressure level of medium and high frequency noise of 200-2000 Hz. The noise reduction effect increases with the increase of the axial distance, and the total sound pressure level can be reduced by up to 13.19 dB（A）.

Key words

wind turbines / noise abatement / towers / helical wires / optimization design

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Zhang Xiaoxue, Gao Zhiying, Su Rina, Zhang Cuiqing, Wang Jianwen. RESEARCH ON OPTIMIZATION OF WIND TURBINE NOISE REDUCTION PERFORMANCE BASED ON WINDING HELICAL WIRES TO TOWER[J]. Acta Energiae Solaris Sinica. 2022, 43(8): 422-429 https://doi.org/10.19912/j.0254-0096.tynxb.2021-1449

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