Experimental study on dynamic characteristics of a jacket-type offshore wind turbine under coupling action of wind and wave

IF 10.1 1区工程技术 Q1 ENERGY & FUELS Applied Energy Pub Date : 2024-11-11 DOI:10.1016/j.apenergy.2024.124876

Wen-Li Chen , Ziyang Zhang , Jiabin Liu , Donglai Gao

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Abstract

Wind and wave loads are crucial factors affecting the structural safety of offshore wind turbines. With the trend towards larger wind turbines, the DTU 10 MW wind turbines have become mainstream models. The jacket-type foundation has been widely used due to its high rigidity and suitability for a wide range of water depths. Therefore, a scaled experiment was conducted on a DTU 10 MW jacket-type offshore wind turbine to reveal the dynamic characteristics of the structure. The experimental results showed that the wind loads dominated the mean of the structural response. Under the coupling action of wind and wave, the wind load suppresses the response at the structure's first-order frequency and the wave frequency. Both the wind and wave loads influence the amplitude of the structural response. The response amplitudes of the tower top displacement and foundation bending moment were smaller than the square root of the sum of the squares (SRSS) obtained from the separate wind and wave actions. Under extreme wind speed, the tower top displacement's amplitude is 75 % of the SRSS value, and the amplitude of the foundation bending moment is only 67 % of the SRSS value.

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风浪耦合作用下夹套型海上风力涡轮机动态特性的实验研究

风浪载荷是影响海上风力涡轮机结构安全的关键因素。随着风力涡轮机大型化的趋势，DTU 10 兆瓦风力涡轮机已成为主流机型。茄克式基础因其刚性高、适用水深范围广而被广泛使用。因此，我们对 DTU 10 MW 夹套型海上风力涡轮机进行了比例实验，以揭示其结构的动态特性。实验结果表明，风荷载主导了结构响应的平均值。在风和波浪的耦合作用下，风载荷抑制了结构一阶频率和波浪频率的响应。风荷载和波浪荷载都会影响结构响应的振幅。塔顶位移和地基弯矩的响应振幅均小于风力和波浪单独作用时的平方根之和（SRSS）。在极端风速下，塔顶位移的振幅为 SRSS 值的 75%，而地基弯矩的振幅仅为 SRSS 值的 67%。

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来源期刊

Applied Energy 工程技术-工程：化工

CiteScore

21.20

自引率

10.70%

发文量

1830

审稿时长

41 days

期刊介绍： Applied Energy serves as a platform for sharing innovations, research, development, and demonstrations in energy conversion, conservation, and sustainable energy systems. The journal covers topics such as optimal energy resource use, environmental pollutant mitigation, and energy process analysis. It welcomes original papers, review articles, technical notes, and letters to the editor. Authors are encouraged to submit manuscripts that bridge the gap between research, development, and implementation. The journal addresses a wide spectrum of topics, including fossil and renewable energy technologies, energy economics, and environmental impacts. Applied Energy also explores modeling and forecasting, conservation strategies, and the social and economic implications of energy policies, including climate change mitigation. It is complemented by the open-access journal Advances in Applied Energy.