High resolution wind resource assessment method based on mesoscale atmospheric model and CFD technology

IF 1.5 Q4 ENERGY & FUELS

Wind Engineering Pub Date : 2023-01-12 DOI:10.1177/0309524X221149476

J. Ma, Fei Liu, Chenggang Xiao, Kairan Wang, Zirui Liu

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引用次数: 0

Abstract

The evaluation results of wind energy resources directly affect the economic benefits and healthy development of wind farms. Therefore, a high-resolution wind resource assessment method for wind farms based on mesoscale atmospheric model and CFD technology is studied to accurately simulate relevant data of wind resources and improve the assessment effect. The mesoscale WRF numerical model is used to solve the regional data of wind farms and obtain the mesoscale meteorological analysis data. According to the solution results of the mesoscale atmospheric model, the wind speed profile is established, the boundary conditions and initial conditions are extracted, and the CFD micro scale model is input to obtain the wind speed and wind speed frequency at the height of the fan impeller. In order to improve the accuracy of numerical simulation of micro scale CFD model, the large eddy simulation method is used to simulate the operation of wind farms. Complete theoretical power generation evaluation based on wind speed, wind speed frequency and generator power. The experimental results show that this method can accurately simulate wind resources and accurately evaluate the theoretical power generation of wind farms. The wind farm is rated as Level 3, and the wind frequency is mainly between 4 and 10 m/s. This method can ensure that the wind farm can generate electricity all year round without damaging the wind speed.

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基于中尺度大气模式和CFD技术的高分辨率风资源评价方法

风能资源评价结果直接影响风电场的经济效益和健康发展。为此，研究基于中尺度大气模式和CFD技术的风电场高分辨率风资源评价方法，以准确模拟风资源相关数据，提高评价效果。采用中尺度WRF数值模式求解风电场区域数据，获得中尺度气象分析数据。根据中尺度大气模式的求解结果，建立风速廓线，提取边界条件和初始条件，输入CFD微尺度模型，得到风机叶轮高度处的风速和风速频率。为了提高微尺度CFD模型数值模拟的精度，采用大涡模拟方法对风电场运行进行模拟。完成基于风速、风速频率和发电机功率的理论发电评估。实验结果表明，该方法能够准确模拟风力资源，准确评估风电场的理论发电量。风电场等级为3级，风速主要在4 ~ 10m /s之间。这种方法可以保证风电场全年都能发电而不损害风速。

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来源期刊

Wind Engineering ENERGY & FUELS-

CiteScore

4.00

自引率

13.30%

发文量

期刊介绍： Having been in continuous publication since 1977, Wind Engineering is the oldest and most authoritative English language journal devoted entirely to the technology of wind energy. Under the direction of a distinguished editor and editorial board, Wind Engineering appears bimonthly with fully refereed contributions from active figures in the field, book notices, and summaries of the more interesting papers from other sources. Papers are published in Wind Engineering on: the aerodynamics of rotors and blades; machine subsystems and components; design; test programmes; power generation and transmission; measuring and recording techniques; installations and applications; and economic, environmental and legal aspects.