Establishment method and device of three-dimensional wake model, equipment and storage medium

A wake model and establishment method technology, applied in 3D modeling, computer-aided design, design optimization/simulation, etc., can solve problems such as difficult to predict wind speed distribution

Pending Publication Date: 2019-07-12
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the 2D wake model has been verified with the measured data to predict the wind speed distribution on the horizontal plane at the height of the wind turbine hub, and it has a good effect on the layout optimization of wind farms in flat terrain (the height o...

Method used

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  • Establishment method and device of three-dimensional wake model, equipment and storage medium
  • Establishment method and device of three-dimensional wake model, equipment and storage medium
  • Establishment method and device of three-dimensional wake model, equipment and storage medium

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Embodiment 1

[0066] figure 1 It is a flowchart of a method for establishing a three-dimensional wake model provided by Embodiment 1 of the present invention. This embodiment is applicable to the situation of establishing a three-dimensional wake model for a wind farm, such as figure 1 As shown, the method specifically includes the following steps:

[0067] Step 110, predict based on the preset wake model and the law of mass conservation, and obtain the Gaussian distribution of the wake wind speed at the initial vertical height.

[0068] Wherein, the preset wake model includes a Jensen model and / or a 2D Jensen-Gauss model.

[0069] In order to accurately describe the wind velocity distribution in the three-dimensional space of the far wake area, the wake model proposed in this embodiment assumes that the wake velocity U is a three-dimensional function of space, that is, U=U(x, y, z), and the hub center of the fan is The coordinate origin establishes a three-dimensional coordinate system: ...

Embodiment 2

[0098] Figure 8 It is a schematic structural diagram of a device for establishing a three-dimensional wake model provided in Embodiment 2 of the present invention. Such as Figure 8 As shown, the device includes:

[0099] The Gaussian distribution acquisition module 210 of the wake wind speed at the initial vertical height is used to predict based on the preset wake model and the law of mass conservation, and obtain the Gaussian distribution of the wake wind speed at the initial vertical height, wherein the preset wake model includes Jensen models and / or 2D Jensen-Gauss models;

[0100] The rotation angle calculation module 220 is used to obtain the wind shear curve of the incoming wind speed, and calculate the rotation angle according to the wind shear curve;

[0101] The Gaussian distribution acquisition module 230 for correcting the wake wind speed at the vertical height is used to perform rotation correction on the Gaussian distribution of the wake wind speed at the in...

Embodiment 3

[0124] Figure 9 It is a schematic structural diagram of a computer device provided by Embodiment 3 of the present invention. Figure 9 A block diagram of a computer device 312 suitable for implementing embodiments of the invention is shown. Figure 9 The computer device 312 shown is only an example, and should not impose any limitation on the functions and scope of use of the embodiments of the present invention. Device 312 is typically a computing device that undertakes the function of building a three-dimensional wake model.

[0125] Such as Figure 9As shown, computer device 312 takes the form of a general-purpose computing device. Components of computer device 312 may include, but are not limited to: one or more processors 316, storage 328, bus 318 connecting various system components including storage 328 and processor 316.

[0126] Bus 318 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an acc...

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Abstract

The embodiment of the invention discloses an establishment method and device of three-dimensional wake model, equipment and a storage medium. Firstly, prediction is performed based on a preset wake model and a mass conservation law; gaussian distribution of the wake flow wind speed at the initial vertical height is obtained; then a wind shear curve of an incoming flow wind speed is obtained; the rotation angle is calculated according to the wind shear curve; rotation correction is performed on the Gaussian distribution of the wake flow wind speed at the initial vertical height according to therotation angle; Gaussian distribution of wake flow wind speed with the corrected vertical height is obtained, then the wake flow speed of the horizontal plane is predicted to obtain Gaussian distribution of the wake flow wind speed of the horizontal plane, and finally a three-dimensional wake flow model is estqblished according to the Gaussian distribution of the wake flow wind speed with the corrected vertical height and the Gaussian distribution of the wake flow wind speed of the horizontal plane. The method for establishing the three-dimensional wake model provided by the embodiment of theinvention can improve the accuracy of predicting the wake area wind speed distribution by the wake model, and can be further applied to layout optimization and wind power prediction of a wind power plant.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of wind power generation, and in particular to a method, device, equipment and storage medium for establishing a three-dimensional wake model. Background technique [0002] With the continuous consumption of conventional fossil energy and the enhancement of people's awareness of environmental protection, wind energy, as a clean and pollution-free renewable energy, has attracted more and more attention from all over the world. According to the latest report of the World Wind Energy Association, by the end of 2017, the total installed capacity of wind turbines in the world reached 539GW, and the total power generation can meet more than 5% of the global electricity demand. However, while the wind power industry is developing rapidly all over the world, it is also facing many problems that need to be solved urgently. Among them, the wake effect has been widely studied as an important ...

Claims

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Application Information

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IPC IPC(8): G06T17/00G06F17/50
CPCG06T17/00G06F30/20
Inventor 高晓霞李兵兵王腾渊
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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