Statistical characterization of marine wind structure over wind-turbine-relevant heights in tropical cyclones

IF 4.2 2区工程技术 Q1 ENGINEERING, CIVIL Journal of Wind Engineering and Industrial Aerodynamics Pub Date : 2024-08-24 DOI:10.1016/j.jweia.2024.105874

J.Y. He , P.W. Chan , Q.S. Li

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Abstract

Tropical cyclones (or typhoons, hurricanes) may influence the power production and structural integrity of offshore wind turbines. However, understanding of tropical cyclone wind structure over turbine-relevant heights remains limited. Based on observations from a wind lidar and a meteorological mast at a planned offshore wind farm site, this paper investigates the marine wind characteristics, e.g., wind speed shear, wind direction veer, and turbulence intensity, over turbine-relevant heights in tropical cyclones. Statistical distributions of the marine wind characteristics are analyzed, and their variations with upstream fetch conditions and hub-height wind speeds are examined. Some noteworthy features of the marine wind structure in tropical cyclones are observed, such as the median wind veer rate of 0.018°/m and veer angle of 2.2° across the turbine rotor heights, different wind shear coefficients and wind veer rates for upper and lower rotors, and levelling off or decrease of wind shear coefficient and turbulence intensity with increasing wind speed at hub-height wind speed over 25 m/s. The outcome of this study is expected to provide useful information for design and operation of offshore wind turbines, marine platforms, and other ocean structures in tropical cyclone-prone regions.

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热带气旋中风力涡轮机相关高度上海洋风结构的统计特征

热带气旋（或台风、飓风）可能会影响海上风力涡轮机的发电量和结构完整性。然而，人们对风机相关高度上热带气旋风结构的了解仍然有限。本文基于风激光雷达和气象桅杆在海上风电场规划地点的观测数据，研究了热带气旋中湍流相关高度上的海洋风特征，如风速切变、风向偏转和湍流强度。本文分析了海洋风特征的统计分布，并研究了它们随上游风向条件和轮毂高度风速的变化。观察到热带气旋中海洋风结构的一些值得注意的特征，如各风机转子高度的中值风偏转率为 0.018°/m，偏转角为 2.2°；上下风机转子的风切变系数和风偏转率不同；轮毂高度风速超过 25 米/秒时，风切变系数和湍流强度随风速增加而趋于平缓或减小。这项研究的结果有望为热带气旋多发地区的海上风力涡轮机、海洋平台和其他海洋结构的设计和运行提供有用信息。

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来源期刊

Journal of Wind Engineering and Industrial Aerodynamics 工程技术-工程：土木

CiteScore

8.90

自引率

22.90%

发文量

306

审稿时长

4.4 months

期刊介绍： The objective of the journal is to provide a means for the publication and interchange of information, on an international basis, on all those aspects of wind engineering that are included in the activities of the International Association for Wind Engineering http://www.iawe.org/. These are: social and economic impact of wind effects; wind characteristics and structure, local wind environments, wind loads and structural response, diffusion, pollutant dispersion and matter transport, wind effects on building heat loss and ventilation, wind effects on transport systems, aerodynamic aspects of wind energy generation, and codification of wind effects. Papers on these subjects describing full-scale measurements, wind-tunnel simulation studies, computational or theoretical methods are published, as well as papers dealing with the development of techniques and apparatus for wind engineering experiments.