Wind Pressure Characteristics of Wind Turbine Surface Under Thunderstorm Downburst

被引：0
|
作者：
Liu C. [1 ]
Zha C. [1 ]
Sun H. [1 ]
Zhu B. [1 ]
机构：
[1] School of Civil Engineering and Architecture, Northeast Electric Power University, Jilin
来源：
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2021年 / 41卷 / 17期
基金：
中国国家自然科学基金;
关键词：
Computational fluid dynamics; Thunderstorm downburst; Wind field; Wind pressure characteristics; Wind turbine;
D O I：
10.13334/j.0258-8013.pcsee.201719
中图分类号：
学科分类号：
摘要：
In order to reveal the characteristics of the downburst wind field and the wind pressure characteristics of the wind turbine under the action of the wind field, based on the computational fluid dynamics (CFD) method, the downburst wind field characteristics and the wind pressure characteristics of the wind turbine were studied. By comparing with the semi-empirical theory of Wood, the correctness of numerical simulation method was verified. From the perspective of wind speed changes, the topography has an obvious effect on the variations in the wind field. The radial wind speed of the flat ground turbulence is larger near the ground. With the increase of radial distance, the wind speed first increases and then decreases. The downburst current mainly acts on the windward slope and the hilltop position and forms a vortex area around the leeward slope. The downburst has a lower wind speed on the leeward slope, and the mountain has a blocking effect. The slope of the mountain on the windward side has an accelerating effect on the wind field, and the location of the highest wind speed is the area near the top of the mountain. Taking the GW2.5MW wind turbine as an example, the wind pressure characteristics of the wind turbine on flat ground, hillside and mountain top were studied. The result shows that the maximum wind pressure on the surface of the wind turbine at the top of the mountain is concentrated in an area 0~25m above the ground, the maximum wind pressure on the surface of the wind turbine on the hillside is mainly distributed at the bottom of the nacelle, and the maximum wind pressure on the surface of the wind turbine on the flat ground is concentrated in the area 0~40m from the ground. The research results can provide valuable references for the design and safe operation of wind turbines. © 2021 Chin. Soc. for Elec. Eng.
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页码：5991 / 6002
页数：11
相关论文
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