轮毂高度对不同大气稳定性下风力涡轮机性能增强的影响

IF 11 1区工程技术 Q1 ENERGY & FUELS

Applied Energy Pub Date : 2025-09-26 DOI:10.1016/j.apenergy.2025.126787

Jiufa Cao , Xiang Gao , Xiang Shen , Wei Zhong , Hehe Ren , Shitang Ke

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引用次数: 0

摘要

虽然大气稳定性对风电场性能有显著影响，但稳定性条件、轮毂高度的影响和尾流行为之间的关系仍然知之甚少，这对最大限度地提高风能效率构成了关键障碍。本研究首次对这些耦合效应进行了全面的研究，使用大涡模拟和致动器线建模，可以详细分析依赖于稳定性的尾流动力学。前体模拟生成了真实的不稳定、中性和稳定的大气流入，并对尼伯涡轮数据进行了模型验证。结果揭示了稳定性和尾流恢复之间以前未量化的关系，在不稳定和稳定的条件下，尾流恢复的速率变化高达37%。对不同轮毂高度的研究显示出出乎意料的巨大稳定性依赖效益，在稳定条件下，单涡轮的功率增加了10.49%，上游/下游涡轮的功率增加了10.92% / 8.31%——正是在尾流效应最成问题的情况下。分析表明，虽然轮毂高度的增加主要影响垂直速度分布，但在不同的大气条件下，战略性的高度调整可以有效地减轻尾迹损失。这些发现为提高风电场设计的稳定性建立了新的原则，对可再生能源的部署效率具有重要意义。

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Impact of hub height for enhanced performance of wind turbines under varying atmospheric stability

While atmospheric stability significantly impacts wind farm performance, the relationship between stability conditions, the influence of hub height, and wake behaviour remains poorly understood, creating a critical barrier to maximizing wind energy efficiency. This study presents the first comprehensive investigation of these coupled effects using Large Eddy Simulation with actuator line modelling, enabling detailed analysis of stability-dependent wake dynamics. Precursor simulations generate realistic unstable, neutral and stable atmospheric inflows, with model validation against Nibe turbine data. Results reveal previously unquantified relationships between stability and wake recovery, with rates varying by up to 37 % between unstable and stable conditions. The investigation of different hub heights shows unexpectedly large stability-dependent benefits, achieving power increases of 10.49 % for single turbines and 10.92 %/8.31 % for upstream/downstream turbines in stable conditions - precisely when wake effects are most problematic. Analysis demonstrates that while increased hub height primarily affects vertical velocity profiles, strategic height adjustment can effectively mitigate wake losses under varying atmospheric conditions. These findings establish new principles for stability-aware wind farm design enhancement, with significant implications for renewable energy deployment efficiency.

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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.