Mass online historical data-based power system transient stability evaluation method

A transient stability evaluation and power system technology, applied in data processing applications, instruments, resources, etc., can solve problems such as it is difficult to directly establish a clear relationship between static characteristics of the system

Active Publication Date: 2016-04-20
CHINA ELECTRIC POWER RES INST +2
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Problems solved by technology

[0005]Based on existing theories, it is difficult to directly establish a clear relationship between the static characteristics and stability of the system

Method used

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  • Mass online historical data-based power system transient stability evaluation method
  • Mass online historical data-based power system transient stability evaluation method
  • Mass online historical data-based power system transient stability evaluation method

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Embodiment Construction

[0061] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0062] The following description and drawings illustrate specific embodiments of the invention sufficiently to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely represent possible variations. Individual components and functions are optional unless explicitly required, and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. The scope of embodiments of the present invention includes the full scope of the claims, and all available equivalents of the claims. These embodiments of the present invention may be referred to herein, individually or collectively, by the term "invention", which is for convenience only and is not...

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Abstract

The invention relates to a mass online historical data-based power system transient stability evaluation method. The method comprises the steps of selecting mass online historical data to generate emulated data; based on the emulated data, extracting statistic features and generating an initial sample set; extending an instable sample and compressing a stable sample in the extended-boundary manner so as to form a calculation sample; based on the calculation sample, conducting the classification model training and the parameter optimization based on the SVM algorithm to finally form a classification model, and evaluating the transient stability of a power system. According to the technical scheme of the invention, a reusable theoretical solution is established from an original online calculation result to a main problem involved in forming an actual available SVM model. The above technical scheme reflects some characteristics of the mass data processing process and provides a novel method for the mass data technical packet of the power system.

Description

technical field [0001] The invention relates to an evaluation method in the technical field of power system security and stability analysis, in particular to a power system transient stability evaluation method based on massive online historical data. Background technique [0002] Most of the existing fast stability determination methods extract static and dynamic features from online calculation data and results as the basis of data analysis. The former can be obtained from basic data, as well as static calculations such as power flow and short circuit, while the latter needs to be obtained through transient stability calculations. In order to cooperate with online calculation, this kind of transient stability calculation usually only needs a few iterations to reduce time consumption. Judging from the effect of the existing achievements, based on the analysis data containing static and dynamic features, using conventional data analysis algorithms, satisfactory results can ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/0635G06Q50/06
Inventor 黄彦浩戴红阳于之虹才洪全边二曼史东宇邱健华科鲁广明李伟
Owner CHINA ELECTRIC POWER RES INST
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