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Method for solving power network static security domain

A static security domain and power network technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problem of not being able to obtain the security domain of power network sections and lines, and achieve real-time online static security analysis, The method is versatile and achieves the effect of a simple method

Active Publication Date: 2014-08-27
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method for solving the static security domain of the power network, which solves the shortcomings of the existing analysis methods for the static security domain of the power network and the shortcomings of not being able to obtain the security domain of the line flow of the power network section

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  • Method for solving power network static security domain
  • Method for solving power network static security domain
  • Method for solving power network static security domain

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Embodiment Construction

[0028] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0029] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and / or groups thereof. It will be unders...

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Abstract

The invention discloses a method for solving a power network static security domain. The method comprises the steps of building a linear relation between the amplitude and phase angle of a node voltage and node power injection according to a linearization power network node power injection equation, and then obtaining a hyperplane set representing all sub-boundaries corresponding to static security constraints. A section tidal current security domain is equivalent to an intersection of two split sub-power-network split node security domains by splitting a power network, and indirectly obtaining a section tidal current security domain boundary hyperplane set. According to the method, the linearization method is adopted, the aims that the power network node power injection equation has the super-high dimensions and strong nonlinearity are achieved, the calculated amount of solving the security domain boundary is small, the required calculation time is short, and the method is suitable for actual online application and can be widely applied to static security analysis of the power network.

Description

technical field [0001] The invention relates to a method for solving the static security domain of a power network, which belongs to the field of static security analysis of the power system. Background technique [0002] Power system security directly affects people's daily life and social stability. In recent years, frequent blackouts have occurred worldwide, resulting in huge economic losses and negative social impacts. Therefore, it is necessary to study static security analysis methods for power systems that can be applied online in real time. [0003] Static security analysis of power network is a very effective tool to ensure the security of power system. The traditional static safety analysis method "point-by-point method" uses methods such as numerical simulation, eigenvalue calculation or energy function method to analyze the safety of power systems for a given power injection and fault conditions. This type of method is currently the most important and practical...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 吴英俊
Owner NANJING UNIV OF POSTS & TELECOMM
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