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Noise distribution prediction method for complex terrain wind power plant

A technology of complex terrain and noise distribution, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as large amount of calculation, complex calculation method, and need to improve calculation efficiency, so as to achieve efficient and accurate prediction and wide range of applications wide effect

Active Publication Date: 2019-08-09
YANGZHOU UNIV
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Problems solved by technology

However, due to the influence of terrain on complex terrain noise prediction, these calculation methods are more complicated. If current methods are used to calculate, it will lead to a large amount of calculation, and the calculation efficiency needs to be improved

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  • Noise distribution prediction method for complex terrain wind power plant
  • Noise distribution prediction method for complex terrain wind power plant
  • Noise distribution prediction method for complex terrain wind power plant

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Embodiment Construction

[0031] The present invention is described in further detail now in conjunction with accompanying drawing.

[0032] In order to solve the noise prediction problem of wind farms with complex terrain, the present invention proposes an efficient and accurate noise prediction method for wind farms with complex terrain, including the following steps:

[0033] Step 1. Based on the complex terrain engineering wake model of the wind farm, the incoming wind speed of each wind turbine in the wind farm is generated, and the aerodynamic noise source of each wind turbine is calculated.

[0034] Step 2. Based on the characteristics of wind farms with complex terrain, the "boundary ray grid method" is innovatively proposed to improve the calculation efficiency of complex terrain.

[0035] First, the terrain is divided into the boundary range of wind farm prediction. On its borders, the ray endpoints are arranged (uniform and non-uniform arrangements are possible). Then take the wind turbine...

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Abstract

A noise distribution prediction method for a wind power plant with a complex terrain mainly comprises the following steps: firstly, generating a wind turbine aerodynamic noise source on the complex terrain considering the influence of wake flow based on an engineering wake flow model; secondly, proposing a boundary ray grid method to improve the whole noise distribution prediction calculation efficiency; and finally, solving through a PE parabola noise propagation equation of the complex terrain, carrying out noise power logarithm superposition, and obtaining the noise distribution condition of the wind power plant of the complex terrain. The boundary ray grid method is innovatively provided, on the basis that the accuracy is good, the problem that the calculated amount of an existing noise prediction method on a complex terrain is large is solved, and the noise prediction precision and the calculation efficiency of the wind power plant are improved. Due to the large scale of the windpower plant and the trend of developing to complex terrains, the aerodynamic noise influence of the wind power plant becomes more and more serious, and the method has important application prospects for wind power plant noise prediction.

Description

technical field [0001] The invention belongs to the field of wind power generation, and in particular relates to a method for predicting the noise distribution of wind farms with complex terrain. Background technique [0002] Scholars at home and abroad have conducted relevant research on the noise prediction method of wind farms. In the numerical calculation simulation method, the noise distribution simulation calculation of wind farms is mainly based on the ISO international outdoor noise propagation semi-empirical method. Although the calculation speed of this method is relatively fast However, in the noise propagation simulation, the calculation is still based on the empirical correction formula, which is lacking in calculation accuracy, and has instability and limitations; some scholars also conduct single- Numerical simulation of the sound source and propagation of the noise of one or more wind turbines. Although the calculation accuracy of this method is high, the cal...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F2119/10G06F30/23
Inventor 朱卫军曹九发李生权孙振业赵永岭柯世堂李小川
Owner YANGZHOU UNIV
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