偏航失准情况下风力涡轮机风浪的自由涡模型--远风浪效应验证研究

IF 3.6 Q3 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY
M. J. van den Broek, Delphine De Tavernier, Paul Hulsman, Daan van der Hoek, Benjamin Sanderse, J. van Wingerden
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引用次数: 0

摘要

摘要。利用自由涡旋尾流对风力涡轮机模型的近涡效应进行了广泛研究,但缺乏对中远涡旋尾流预测的验证。本文提出了一项新的验证研究,使用了三种复杂程度不断增加的自由涡流尾流模型:致动盘、带旋转的致动盘和提升线模型。我们强调了动态风场流量控制优化的应用,重点是利用偏航错位进行尾流重定向。为此,尾流模型应能以较低的计算成本提供足够精确的功率预测,以实现实时控制优化。我们使用了三组风洞数据进行验证:稳定偏航偏差下的流量测量、偏航阶跃变化的时间分辨流量测量,以及偏航控制和模拟风向变化下的涡轮机输出测量。结果表明,致动器-圆盘模型在中远距离尾流功率预测的计算成本和准确性之间实现了最佳平衡,而增加旋转并不能显著改善这种平衡。在近尾流中,升力线模型的复杂性增加了,因为它可以模拟叶片载荷和单个叶尖涡流。总之,这项研究为进一步研究时变条件下的尾流转向优化提供了重要的验证,并表明致动器-圆盘模型是模型预测风场流量控制框架的合适候选模型。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Free-vortex models for wind turbine wakes under yaw misalignment – a validation study on far-wake effects
Abstract. Near-wake effects of wind turbine models using the free-vortex wake have been studied extensively, but there is a lack of validation for such predictions in the mid to far wake. This paper presents a novel validation study using three free-vortex wake models of increasing complexity: an actuator disc, an actuator disc with rotation, and a lifting-line model. We emphasise the application for dynamic wind farm flow control optimisation with a focus on wake redirection using yaw misalignment. For this purpose, wake models should provide sufficiently accurate power predictions at a low computational expense to enable real-time control optimisation. Three sets of wind tunnel data are used for validation: flow measurements under steady yaw misalignment, time-resolved flow measurements for a step change in yaw, and turbine output measurements with yaw control and simulated wind direction variation. Results indicate that the actuator-disc model provides the best balance between computational cost and accuracy in power predictions for the mid to far wake, which is not significantly improved upon by the addition of rotation. In the near wake, the added complexity of the lifting-line model may provide value as it models blade loading and individual tip vortices. Altogether, this study provides important validation for further studies into optimisation of wake steering under time-varying conditions and suggests that the actuator-disc model is a suitable candidate for use in a model-predictive wind farm flow control framework.
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来源期刊
Wind Energy Science
Wind Energy Science GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY-
CiteScore
6.90
自引率
27.50%
发文量
115
审稿时长
28 weeks
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