EXTREME VALUE MODEL OF NACELLE VIBRATION DISPLACEMENT OF WIND TURBINE AND ACTUAL DATA VALIDATION

Wang Jianguo; Tian De; Chen Hanbo; Deng Ying; Zhang Cong

doi:10.19912/j.0254-0096.tynxb.2022-1258

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (12) : 221-229. DOI: 10.19912/j.0254-0096.tynxb.2022-1258

EXTREME VALUE MODEL OF NACELLE VIBRATION DISPLACEMENT OF WIND TURBINE AND ACTUAL DATA VALIDATION

Wang Jianguo¹, Tian De², Chen Hanbo³, Deng Ying⁴, Zhang Cong⁵

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Abstract

In view of the safety assessment of wind turbines, the extreme value model of nacelle vibration displacement and actual data validation are studied. In this paper, based on the parameters of 1.5 MW doubly-fed wind turbines,the load data of DLC1.1 is simulated, the extrapolation extreme value models of nacelle displacement is established, combining with statistics principles and load statistics extrapolation principles, the nacelle displacement extreme value of 1 and 50 years return period are obtained. Moreover, the characteristic extreme values of the data of the wind turbine in the windfarm are analyzed, the distribution of different wind and different nacelle displacement are obtained by fitting the characteristic values, the Joint distribution extreme value model of nacelle displacement is determined and the nacelle displacement extreme value are obtained. The extreme values models are validated by using the extreme value data of nacelle displacement in actual operation. A new method is proposed to determine the vibration safety threshold boundary of wind turbine nacelle by using Lyapunov stability theory. These extreme values are used to determine the vibration safety threshold boundary of wind turbine nacelle. These extreme value models are verified by using the extreme value data of the nacelle displacement in actual operation, whether the vibration extreme value of the nacelle simulation data or the vibration of the actual data extreme values, not beyond the safety threshold boundary.

Key words

wind turbines / statistical extrapolation / probability distributions / data validation / extreme value model

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Wang Jianguo, Tian De, Chen Hanbo, Deng Ying, Zhang Cong. EXTREME VALUE MODEL OF NACELLE VIBRATION DISPLACEMENT OF WIND TURBINE AND ACTUAL DATA VALIDATION[J]. Acta Energiae Solaris Sinica. 2023, 44(12): 221-229 https://doi.org/10.19912/j.0254-0096.tynxb.2022-1258

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