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A transformer state evaluation method and system based on a principal component analysis method and a support vector machine

A principal component analysis, support vector machine technology, applied in the direction of instruments, computer parts, character and pattern recognition, etc., to achieve the effect of reducing the number of parameters, reducing the complexity, and improving the accuracy

Inactive Publication Date: 2019-05-10
STATE GRID SHANDONG ELECTRIC POWER +1
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Problems solved by technology

At the same time, a multi-level SVM system is proposed to solve the SVM one-to-many classification problem and establish a transformer state evaluation model

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  • A transformer state evaluation method and system based on a principal component analysis method and a support vector machine
  • A transformer state evaluation method and system based on a principal component analysis method and a support vector machine
  • A transformer state evaluation method and system based on a principal component analysis method and a support vector machine

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Embodiment Construction

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

[0053] It should be pointed out that the following detailed description is exemplary and is intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0054] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combin...

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Abstract

The invention discloses a transformer state evaluation method and system based on a principal component analysis method and a support vector machine. Firstly, a principal component analysis (PCA) method is adopted to carry out dimension reduction processing on state information with complex quantity of transformers, relevance among data is eliminated, most valuable key parameters are selected, andtherefore complexity of subsequent calculation is reduced. Subsequently, the LS-SVM serves as a classifier, the key parameters serve as input, parameter optimization is conducted through the particleswarm algorithm, and the state level of the transformer is evaluated. Meanwhile, a multi-level SVM system is provided, the one-to-many classification problem of the SVM is solved, and a state evaluation model of the transformer is established. According to the method, the parameter number is reduced, the calculation complexity is reduced, meanwhile, the state judgment accuracy of the transformeris guaranteed, and a good guarantee is provided for safe operation of a power system.

Description

technical field [0001] The present disclosure relates to the technical field related to transformers, and in particular, relates to a transformer state evaluation method and system based on principal component analysis method and support vector machine. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] Since the 1970s, my country's power grid has entered a period of high-speed construction, and the scale of the power grid has also expanded rapidly. This trend has continued until the construction of UHV projects in the past two years. Transformer is one of the most common and important pivotal equipment in power system. It is a static electrical device used to change voltage and current and transmit electric energy. From power plants to transmission lines to distribution networks, transformers are used at every step of the conversion of ele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q10/00G06K9/62
Inventor 刘兴华高鹏韩克存吕学宾杨超谢同平于洋孙鹏郭建刘洪顺季亮
Owner STATE GRID SHANDONG ELECTRIC POWER
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