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A Wind Power Fluctuation Suppression Method Based on Hilbert-Huang Transform and Filtering Algorithm

A filter algorithm, a technology for wind power fluctuations, applied in the field of wind power

Active Publication Date: 2019-11-19
GUIZHOU POWER GRID CO LTD
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a wind power fluctuation stabilization method based on the Hilbert-Huang transform and filtering algorithm, so as to solve the problem that the prior art does not provide a method for suppressing wind power fluctuations by batteries and supercapacitors. The principle of the initial value and change of the filter time constant cannot obtain the optimal value of wind power fluctuation stabilization, so as to optimize the overall economic efficiency of hybrid energy storage

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  • A Wind Power Fluctuation Suppression Method Based on Hilbert-Huang Transform and Filtering Algorithm
  • A Wind Power Fluctuation Suppression Method Based on Hilbert-Huang Transform and Filtering Algorithm
  • A Wind Power Fluctuation Suppression Method Based on Hilbert-Huang Transform and Filtering Algorithm

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[0023] A wind power fluctuation stabilization method based on HHT and filtering algorithm, using the combination of Hilbert-Huang transform (HHT) and low-pass filtering algorithm, gives a principle of initial filtering time constant and filtering time constant change, in order to Realize the stabilization of wind power fluctuations by batteries and supercapacitors.

[0024] The described initial filtering time constant is to decompose the original wind power by using the Empirical Mode Decomposition (EMD) algorithm, and fit the decomposed components through the HHT transformation and the least squares method to obtain the main frequency of the wind power, thereby Get the initial filter time constant.

[0025] The principle of changing the filter time constant is to achieve the smoothing of wind power fluctuations by continuously adjusting the filter time constant to minimize its value under the condition of satisfying the constraints of wind power grid-connected fluctuation ra...

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Abstract

The invention discloses a method of wind power fluctuation suppression based on HHT and a filter algorithm. The method is characterized in that the Hilbert-Huang transform (HHT) and the low-pass filtering algorithm are combined, and the initial filtering time constant and the filtering time constant variation principle are utilized to realize the stabilization of the wind power fluctuation by thestorage battery and the supercapacitor. The invention solves the problem that when the prior art realizes the suppression of the wind power fluctuation by the battery and the supercapacitor, the initial value of the filtering time constant and the principle of the variation are not given, and the optimal value of the wind power fluctuation stabilization cannot be obtained and the overall economy of the hybrid energy storage cannot be optimized.

Description

technical field [0001] The invention belongs to the field of wind power, in particular to a wind power fluctuation suppression method based on Hilbert-Huang transformation and filtering algorithm. Background technique [0002] With the increasing consumption of global energy, wind power has become an important part of realizing the sustainable development of electric energy. However, due to the fluctuation rate and intermittency of its output, as well as certain prediction errors, the large-scale development of wind power will have a greater impact on the power system. In order to improve the operation capability of wind power access, it is an important means to use energy storage to regulate wind power. [0003] At present, many studies have been carried out on the use of energy storage systems to stabilize wind power fluctuations. For example: the battery charge and discharge control strategy can maintain the battery charge level under the minimum capacity configuration,...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38H02J3/32H02J3/24G06Q10/06G06Q50/06
CPCG06Q10/06312G06Q50/06H02J3/24H02J3/32H02J3/386Y02E10/76Y02E40/70Y02E70/30Y04S10/50
Inventor 谈竹奎徐玉韬班国邦吕黔苏肖永齐雪雯徐长宝毛时杰谢百明高吉普袁旭峰徐腾陈明洋黄伟煌刘斌丁健马春雷
Owner GUIZHOU POWER GRID CO LTD
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