ANALYSIS OF TURBULENCE INTENSITY FOR SERIAL WIND TURBINES BASED ON SCADA DATA OF OFFSHORE WIND FARM

Wang Yin; Chen Junpeng; Liu Feihong; Wu Di; Miao Desheng; Zhou Zicheng

doi:10.19912/j.0254-0096.tynxb.2023-2109

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (4) : 504-512. DOI: 10.19912/j.0254-0096.tynxb.2023-2109

ANALYSIS OF TURBULENCE INTENSITY FOR SERIAL WIND TURBINES BASED ON SCADA DATA OF OFFSHORE WIND FARM

Wang Yin, Chen Junpeng, Liu Feihong, Wu Di, Miao Desheng, Zhou Zicheng

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Abstract

In order to explore the turbulence intensity variation of each turbine position under the influence of multiple-wake interactions in an offshore wind farm, as well as to examine the differences between actual turbulence intensity and designed turbulence, based on the actual SCADA data from an offshore wind farm and the wake-additional turbulence model used in the IEC standard. A multidimensional comparison and analysis was conducted in this paper, which focues on the impact of wind speed and turbine spacing on the turbulence of serial turbines, and the discrepancies between the measured turbulence intensity and the theoretical predictions. The following laws were obtained: under the rated wind speed, the increment of turbulence intensity for serial turbines shows a trend of gradually increasing with the wind speed, reaching near-maximum turbulence intensity when approaching the rated rotational speed, and then decreasing with the further increase of wind speed, which is related to the turbine operational strategy of variable rotate speed and variable pitch angle. With the spacing of the downstream turbine increased, the turbulence intensity is reduced. When designing wind turbines based on the methods for calculating additional and overall turbulence as specified in the IEC standards, it can effectively ensure that the wind turbines within a wind farm operate within a safe turbulence environment.

Key words

offshore wind farms / wakes / turbulence / wind turbines / additional turbulence / wake overlaps

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Wang Yin, Chen Junpeng, Liu Feihong, Wu Di, Miao Desheng, Zhou Zicheng. ANALYSIS OF TURBULENCE INTENSITY FOR SERIAL WIND TURBINES BASED ON SCADA DATA OF OFFSHORE WIND FARM[J]. Acta Energiae Solaris Sinica. 2025, 46(4): 504-512 https://doi.org/10.19912/j.0254-0096.tynxb.2023-2109

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