Power System State Identification Method Based on Search Attractor Error Algorithm

A power system and attractor technology, applied in the field of power system state identification, can solve problems such as slow calculation speed, low search efficiency, and poor accuracy, and achieve simplified error processing, fast and accurate judgment, improved operating speed and attractor search effect of ability

Active Publication Date: 2021-08-10
NANJING NORMAL UNIVERSITY
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in order to overcome the shortcomings of the prior art, the present invention proposes a method that can make up for the shortcomings of the above-mentioned algorithm, such as slow operation speed, poor accuracy, and low search efficiency, and proposes a fast, clear and accurate algorithm. Algorithm to solve two-parameter change attractor state judgment method

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  • Power System State Identification Method Based on Search Attractor Error Algorithm
  • Power System State Identification Method Based on Search Attractor Error Algorithm
  • Power System State Identification Method Based on Search Attractor Error Algorithm

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[0044] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0045] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should also be understood that terms such as those defined in commonly used dictionaries should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless defined as herein Explanation.

[0046] The invention relates to an error algorithm for quickly and accurately searching for an attractor, which is used to solve the state identification of a power system. The algorithm replaces the calculation of the sequence spectrum entropy complexity or the calculation of the maximum Lyapun...

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Abstract

The invention discloses a power system state identification method based on a fast and accurate search attractor error algorithm. First, a k The first-order power system model changes with the interval of the model's double parameters, and the distribution of the system motion state on the plane of the interval change is obtained; then it is solved according to the numerical analysis method k The first-order system differential equation is used to obtain the sequence of the system, and the trajectory of the system is judged by calculating the first-order error of the maximum value in the iterative sequence, and the system chaos or system instability is estimated. At the same time, the extreme value error algorithm adopted by the present invention analyzes the influence of the disturbance load on the chaotic model of the power system, which has the characteristics of fast, high efficiency and accuracy, and has important significance in the research field of chaotic dynamic characteristics of the power system.

Description

technical field [0001] The invention relates to a power system state identification method, which belongs to the technical field of power system dynamics. Background technique [0002] With the in-depth study of power system stability, it is found that when the system suffers from external disturbances, such as periodic load disturbances and electromagnetic power disturbances, as long as the disturbance amplitude and frequency meet certain conditions, the system will produce chaotic oscillations. When studying the chaotic dynamics of the power system, the bifurcation diagram and Lyapunov exponent spectrum of the disturbance load frequency or amplitude are often made, and then the stability of the power system in a certain parameter interval is analyzed by combining the two. Obviously, this is only a single-dimensional analysis of the motion state of the system, and if the influence of the frequency and amplitude of the disturbance load on the power system is considered at th...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F111/10G06F119/14
CPCG06F30/20G06F2111/10G06F2119/06
Inventor 闵富红李闯
Owner NANJING NORMAL UNIVERSITY
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