针对漂浮式海上风电机组接地系统所处的深海环境及特殊的系泊系统,综合考虑纵荡运动对入流风速和尾流区域膨胀的影响,基于二维BP工程尾流模型,提出一种三维尾流模型（3Dksg_BP）,将该模型用于全尾流区域横向和垂向风速剖面的预测。预测结果与风洞实验数据对比发现,下游1.7D、2.3D、5.0D和10.0D（D为风轮直径）等位置的预测精度均不低于97.6%。基于3Dksg_BP,研究不同频率和振幅下的纵荡运动对尾流造成的影响,结果表明：纵荡运动对尾迹的影响随频率和振幅的增大而增大,且随着下游距离的增加,纵荡运动对尾迹的影响逐渐减小。
Abstract
With consideration of the special mooring system of floating offshore wind turbine and the deep-sea environment in which the grounding system is situated, taking into account both the effect of surge motion on incoming wind velocity and turbulence intensity, an three-dimensional wake model（3Dksg_BP） is proposed on the basis of the two-dimensional BP engineering wake model in this paper, which is used to predict the transverse and vertical wind velocity profiles in the full wake region. The obtained results are compared with the measured data of the wind tunnel experiment, and it was found that the prediction accuracy of the downstream locations of 1.7D, 2.3D, 5.0D and 10.0D was not less than 97.6%. Based on 3Dksg_BP, the effects of the surge motion on the wake at different frequencies and amplitudes are studied. The results show that the effects of the surge motion on the wake increase with the increase of frequency and amplitude, and the effects of the surge motion on the wake decrease with the increase of downstream distance.
关键词
风力机 /
海上风电 /
尾流 /
尾流模型 /
漂浮式风力机 /
平台运动
Key words
wind turbines /
offshore wind power /
wakes /
analytical models /
floating wind turbine /
platform motion
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基金
河北省省级科技计划（21567605H）; 基于无线网络全覆盖的海上风电安全生产管理平台建设研究与应用（XT-KJ-2021012）
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