A method and system for extracting the static stability boundary characteristics of a large power network based on a spatio-temporal sequence

A technology with static stability and boundary characteristics, applied in the fields of instruments, character and pattern recognition, data processing applications, etc., it can solve the problems that the traditional model is difficult to adapt to the power system, the applicability of online engineering cannot be guaranteed, and the operating status is different. The effect of small coverage

Active Publication Date: 2019-02-15
CHINA ELECTRIC POWER RES INST +2
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Problems solved by technology

Most of its research methods are aimed at physical models and high-intensity simulation calculations. Traditional models are difficult to adapt to the current power system, resulting in differences between the conclusions drawn and the actual operating status of the power system, and its online engineering applicability cannot be guaranteed.
Most of the research on the static stability boundary is based on the voltage characteristics, and the comprehens

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  • A method and system for extracting the static stability boundary characteristics of a large power network based on a spatio-temporal sequence
  • A method and system for extracting the static stability boundary characteristics of a large power network based on a spatio-temporal sequence
  • A method and system for extracting the static stability boundary characteristics of a large power network based on a spatio-temporal sequence

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[0063] Exemplary embodiments of the present invention will now be described with reference to the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described here. These embodiments are provided to disclose the present invention in detail and completely. Invention and fully convey the scope of the present invention to those skilled in the art. The terms in the exemplary embodiments shown in the drawings do not limit the present invention. In the drawings, the same units / elements use the same reference signs.

[0064] Unless otherwise specified, the terms (including scientific and technological terms) used herein have the usual meanings to those skilled in the art. In addition, it is understandable that the terms defined in commonly used dictionaries should be understood as having consistent meanings in the context of their related fields, and should not be understood as idealized or overly forma...

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Abstract

The invention provides a method and system for extracting the static stability boundary characteristics of a large power network based on a spatio-temporal sequence, belonging to the field of safe andstable operation of the large power network. The method of the invention comprises the following steps of collecting static stable boundary holographic sample data; selecting static and stable boundary sample data. mapping the static stable boundary sample data to three sample images; calculating the Gaussian difference scale space of that three sample picture by extracting the features of the source sample picture, the net sample picture and the charge sample picture based on the scale invariant characteristic transformation method; carrying out the feature matching between the boundary loadsample image and the boundary net sample image; extracting the sample charge-network static stable boundary characteristics. The method of the invention avoids the shortcomings of less actual operation data and small working condition coverage, and the obtained static stable boundary characteristics are more convincing.

Description

Technical field [0001] The invention relates to the field of safe and stable operation of large power grids, and in particular to a method and system for extracting static and stable boundary features of large power grids based on time-space sequence. Background technique [0002] With the development of the economy, the electricity load continues to increase, and the grid is constantly approaching its transmission capacity limit, and the safe and stable operation of the power system is constantly challenged; new energy and power electronic equipment are connected to the grid on a large scale, and the uncertainty seriously affects the grid Safe and stable operation capability, and there have been many large-scale power outages worldwide. These all put forward urgent technical requirements for the extraction of the boundary features of the power system. [0003] Most of the traditional static stability assessment studies or stability boundary studies only give the static stability ...

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/06G06K9/46G06K9/62
CPCG06Q10/0639G06Q50/06G06V10/462G06F18/22G06F18/24
Inventor 刘道伟田一童李柏青王克非李丹高德宾侯凯元夏得明杨红英章锐李宗翰赵高尚郑恒峰李京杨少波
Owner CHINA ELECTRIC POWER RES INST
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