Hyperspectrum-based composite insulator aging operating state detection method

A technology for composite insulators and detection methods, which is applied in the field of operation status maintenance of power transmission and transformation equipment, and can solve problems that do not involve the aging operation status of composite insulators

Active Publication Date: 2012-06-27
STATE GRID ELECTRIC POWER RES INST
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Problems solved by technology

However, the above-mentioned patents do not relate to the detection method for live detection of the aging operation status of composite insulators on site

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  • Hyperspectrum-based composite insulator aging operating state detection method
  • Hyperspectrum-based composite insulator aging operating state detection method
  • Hyperspectrum-based composite insulator aging operating state detection method

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[0031] In order to better understand the present invention, the content of the present invention is further illustrated below in conjunction with the examples, but the content of the present invention is not limited to the following examples. Those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms are also within the scope of the claims listed in this application.

[0032] Notes in the attached drawings: 1-Hyperspectral image of composite insulator, 2-Preprocessing, 3-Selection of training samples, 4-Establishment of composite insulator aging model, 5-Solution of aging model parameters, 6-Judgement of composite insulator aging Degree, 1.1-composite insulator, 1.2-hyperspectral imager, 2.1-geometric correction, 2.2-denoising, 2.3-radiation correction, 3.1-determining the number of states, 3.2-selecting the sample area for each state, 3.3-taking the mean value, 3.4-Average samples of each state, 4.1-Quantify the deg...

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Abstract

The invention provides a hyperspectrum-based composite insulator aging operating state detection method. The method comprises the following steps of: firstly, obtaining a hyperspectral image of the composite insulator; then, preprocessing the obtained hyperspectral image, selecting a training sample, and establishing a composite insulator aging model; resolving the aging model parameter through the least squares method to obtain a composite insulator aging quantitative model; and finally, judging the degree of aging of the composite insulator through the aging model. The method can quantitatively describe the degree of aging of the composite insulator, and also can judge whether the composite insulator still has the electrical insulating performance according to the quantification on the degree of aging of the composite insulator, so as to change the degraded composite insulator in time.

Description

technical field [0001] The invention relates to a method for detecting the aging operation state of a composite insulator, which belongs to the field of maintenance of the operation state of power transmission and transformation equipment, and in particular to a hyperspectral-based detection method for the aging operation state of a composite insulator, which can be used to detect the aging operation state of a composite insulator on-site. Background technique [0002] Composite insulators have excellent anti-pollution flashover performance, are not easy to be broken down, and will not have problems such as zero value and low value of porcelain insulators and umbrella group self-explosion of glass insulators. In the 1980s, Chinese experts and scholars started the research and development of composite insulators on the basis of absorbing foreign experience, and the mid-term samples were put into trial operation in the late 1980s. In the early 1990s, pollution flashover accide...

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Application Information

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IPC IPC(8): G01R31/12G01N21/25
Inventor 邵瑰玮付晶蔡焕青王文龙
Owner STATE GRID ELECTRIC POWER RES INST
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