Method for predicting temperature fluctuation range of transformer winding hotspot based on fuzzy information granulation

A technology for transformer winding and hot spot temperature, which is applied in instrumentation, design optimization/simulation, calculation, etc., can solve the problem of poor ability of transformer winding hot spot temperature abnormality, etc., to improve prediction accuracy, high prediction accuracy, strong nonlinearity The effect of mapping capabilities

Active Publication Date: 2018-11-02
SHANDONG UNIV
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Problems solved by technology

[0004] All of the above studies have achieved good tracking of the transformer winding temperature. However, these models are relatively poor in predicting the abnormal temperature of the hot spot of the transformer winding in advance.

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  • Method for predicting temperature fluctuation range of transformer winding hotspot based on fuzzy information granulation
  • Method for predicting temperature fluctuation range of transformer winding hotspot based on fuzzy information granulation
  • Method for predicting temperature fluctuation range of transformer winding hotspot based on fuzzy information granulation

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[0045] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0046] It should be pointed out that the following detailed description is exemplary and 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.

[0047] It should be noted that the terminology used here is only used to describe 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 combinat...

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Abstract

The invention discloses a method for predicting a temperature fluctuation range of a transformer winding hotspot based on fuzzy information granulation. The method comprises the following steps: determining the number of granulation time windows according to the fuzzy information granulation quality, and extracting the effective information of original data by using the fuzzy information granulation technology; constructing a wavelet neural network prediction model based on the effective information, and optimizing the structure parameters of a wavelet neural network through a harmony search algorithm; and predicting the temperature fluctuation range of the transformer winding hotspot by using the model with the adjusted structure and parameter. The prediction accuracy of the method disclosed by the invention is relatively high, and certain guiding significance is provided for the operation and maintenance of the transformer.

Description

technical field [0001] The invention relates to a fuzzy information granulation-based method for predicting temperature fluctuation ranges of transformer winding hot spots. Background technique [0002] Power transformers are very important power transmission and transformation equipment, and have always been the focus of monitoring and protection. The loss of proper insulation ability is the main reason for the end of life of most transformers, and the hot spot temperature of transformer winding is one of the important factors affecting its insulation ability. Winding hot spot temperature, defined as the temperature reached in the hottest area of ​​a transformer winding, has been shown to be a key factor affecting transformer loadability and usable life. When the hot spot temperature of the transformer winding exceeds the allowable value, it will cause damage to the transformer insulation. Therefore, in-depth study of the hot spot temperature of the transformer and early ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20G06F2119/04
Inventor 赵彤张黎邹亮刘金鑫段小木王晓龙
Owner SHANDONG UNIV
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