Power grid peak-valley period division method for reverse peak regulation risk caused by new energy output

A technology of time division and new energy, applied in wind power generation, resources, instruments, etc., can solve the problem of not taking into account the output characteristics of new energy, and not solving the problem of anti-peak shaving from the source.

Active Publication Date: 2020-05-12
ELECTRIC POWER SCI RES INST OF STATE GRID XINJIANG ELECTRIC POWER +2
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Problems solved by technology

However, this division method does not take into account the characteristics of ne

Method used

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  • Power grid peak-valley period division method for reverse peak regulation risk caused by new energy output
  • Power grid peak-valley period division method for reverse peak regulation risk caused by new energy output
  • Power grid peak-valley period division method for reverse peak regulation risk caused by new energy output

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Embodiment Construction

[0052] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0053] Such as figure 1 As shown, the flow of the method for dividing the peak and valley periods of the grid anti-peaking risk caused by new energy output in the present invention is as follows:

[0054] 1. Use the fuzzy semi-trapezoidal membership function method to determine the peak and valley membership indicators of each point on the load curve.

[0055] The peak and valley membership indexes are respectively obtained from the semi-trapezoidal oversized membership function and the semi-trapezoidal oversized membership function. figure 2 and image 3 is its function image.

[0056] 2. Use the semi-trapezoidal membership function to obtain the peak and valley membership of each point on the load curve, and analyze the output characteristics of new energy. The anti-peak shaving risk index is obtained, and the anti-peak shaving risk inde...

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Abstract

The invention discloses a power grid peak-valley period division method based on a reverse peak regulation risk caused by new energy output. Firstly, peak and valley membership indexes of each point on a load curve are obtained by utilizing a semi-trapezoidal membership function, a reverse peak regulation risk index is obtained by analyzing new energy output characteristics, index matrix data is standardized by utilizing a translation-standard deviation change method, clustering is carried out by adopting a fuzzy transfer closure method, and a lambda-intercept matrix is solved. Finally, the intra-class and inter-class difference is reflected by establishing a statistic F, the optimal threshold lambda is obtained with the maximum F as the target, and the classification corresponding to theoptimal threshold lambda is the divided peak and valley time periods. According to the method, the reverse peak regulation risk caused by new energy output characteristics is fully considered, and a reliable basis can be provided for peak regulation and reverse peak regulation inhibition of new energy grid connection.

Description

technical field [0001] The invention relates to a method for dividing peak and valley periods of a power grid. Background technique [0002] The sharp increase in domestic energy demand has led to a sharp increase in the consumption of fossil energy, but the output of fossil energy in my country is relatively insufficient. Moreover, the extensive use of fossil energy has caused very serious environmental problems. Therefore, vigorously developing renewable new energy has become the main way to deal with the problem of energy shortage. However, the continuously increasing new energy load peak-to-valley difference, intermittent and large fluctuations have increased the phenomenon of anti-peaking in the power grid and reduced its predictability. This makes it difficult to absorb new energy and connect to the grid, and causes a large number of wind and solar abandonment phenomena. In order to be able to absorb a large amount of new energy, it is necessary to suppress the occu...

Claims

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Application Information

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IPC IPC(8): G06K9/62G06Q10/06G06Q50/06
CPCG06Q10/0635G06Q10/06393G06Q50/06G06F18/23213Y02E10/76
Inventor 高荣刚杨洋袁铁江徐强赵建平郜宁董利江高玲玉
Owner ELECTRIC POWER SCI RES INST OF STATE GRID XINJIANG ELECTRIC POWER
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