Wind energy resource fluctuation scale division method and system based on wavelet analysis

A technology of wavelet analysis and scaling, applied in the direction of information technology support system, data processing application, prediction, etc., to achieve the effect of improving the utilization rate of wind energy resources

Pending Publication Date: 2022-05-20
CHINA ELECTRIC POWER RES INST +2
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Problems solved by technology

[0002] With the rise of new energy sources, wind farms are being built on a large scale. Before construction, they need to be planned according to terrain, landform and meteorological conditions. Although wind energy resources are random and fluctuating in the short term, from a long-term statistical perspective, wind The randomness and volatility of resources have certain statistical laws and characteristics

Method used

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  • Wind energy resource fluctuation scale division method and system based on wavelet analysis
  • Wind energy resource fluctuation scale division method and system based on wavelet analysis
  • Wind energy resource fluctuation scale division method and system based on wavelet analysis

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Embodiment Construction

[0039] In order to better understand the present invention, the content of the present invention will be further described below in conjunction with the accompanying drawings and examples.

[0040] Such as figure 1 As shown, a wavelet analysis-based method for dividing the scale of wind energy resource fluctuations includes:

[0041] S1 obtains the historical wind speed sequence of the wind farm to be measured, and performs Fourier transform on the historical wind speed sequence;

[0042] S2 utilizes wavelet transform to optimize the result of Fourier transform, obtains the wavelet transform function of described historical wind speed sequence;

[0043] S3 Using the energy spectrum of the wavelet transform function to determine the fluctuation scale of the wind energy resource at the location of the wind farm to be measured.

[0044] The invention divides the fluctuation scale of wind energy resources through wavelet analysis, and can optimize wind farm planning and wind pow...

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Abstract

The invention discloses a wind energy resource fluctuation scale division method and system based on wavelet analysis, and the method comprises the steps: obtaining a historical wind speed sequence of a to-be-measured wind power plant, and carrying out the Fourier transformation of the historical wind speed sequence; the Fourier transform result is optimized through wavelet transform, and a wavelet transform function of the historical wind speed sequence is obtained; and determining the fluctuation scale of the wind energy resource at the position of the to-be-tested wind power plant by using the energy spectrum of the wavelet transformation function. The fluctuation scale of the wind energy resources is divided through wavelet analysis, the method can be used for optimizing wind power plant planning and wind power dispatching, and the utilization rate of the wind energy resources is increased.

Description

technical field [0001] The invention relates to the field of new energy forecasting, in particular to a wavelet analysis-based method and system for dividing the fluctuation scale of wind energy resources. Background technique [0002] With the rise of new energy sources, wind farms are being built on a large scale. Before construction, they need to be planned according to terrain, landform and meteorological conditions. Although wind energy resources are random and fluctuating in the short term, from a long-term statistical perspective, wind These randomness and volatility of resources have certain statistical laws and characteristics. Analyzing and counting the fluctuation characteristics and random statistical laws of wind energy resources can be used to optimize the planning of wind farms and wind power dispatching. Therefore, the present invention provides a method for dividing the fluctuation scale of wind energy resources. Contents of the invention [0003] In orde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/14G06Q10/04G06Q50/06
CPCG06F17/141G06F17/148G06Q10/04G06Q50/06Y04S10/50
Inventor 胡菊董存梁志峰冯双磊王勃王伟胜刘纯万筱钟王铮王姝靳双龙耿天翔李晓虎宋宗朋刘晓琳张菲姜文玲赵艳青裴岩王钊
Owner CHINA ELECTRIC POWER RES INST
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