A composite insulator shed aging detection method and detection device based on spectral imaging
A technology of composite insulators and insulator sheds is applied in the directions of using optical methods for testing, measuring devices, color/spectral characteristics measurement, etc., and can solve the problems of poor safety, high detection cost, and inability to achieve non-contact measurement, etc. Achieve high diagnostic efficiency and strong applicability
Active Publication Date: 2021-06-01
四川恒创天地自动化设备有限公司
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Problems solved by technology
However, this method cannot realize non-contact measurement, and the detection cost is high and the efficiency is low
For example, in the traditional evaluation of the aging state of the shed of the silicone rubber composite insulator, the insulator aging state is evaluated by measuring electrical parameters such as voltage and leakage current flowing through the insulator. lower and less secure
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[0042] The following will refer to the attached Figure 1 to Figure 4 Specific examples of the present invention are described in more detail. Although specific embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and is not limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.
[0043]It should be noted that certain terms are used in the specification and claims to refer to specific components. Those skilled in the art should understand that they may use different terms to refer to the same component. The specification and claims do not use differences in nouns as a way of distinguishing components, but use differences in functions of components as a criterion for distinguishing. "Includes" or "comprises" mentioned throughout t...
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Abstract
The invention discloses a composite insulator shed aging detection method and detection device based on spectral imaging. The method includes the following steps: making a composite insulator shed slice with known aging degree, and photographing the composite insulator shed in the same field of view The hyperspectral image of the slice, the optimal band index is calculated based on the hyperspectral image statistics to extract the characteristic band, the filter corresponding to the characteristic band is equipped on the multispectral camera to capture the grayscale image under the characteristic band, based on the grayscale image processing and image visualization fusion to summarize the corresponding relationship between the aging degree and the gray value of the fused image, form the feature library of the aging state of the insulator shed, clean the insulator shed to be detected and prepare the shed slice, and shoot the shed with a multi-spectral camera Slicing the multispectral image of the characteristic band and performing image processing to obtain the gray value of the image, comparing it with the insulator shed aging state feature library, and judging the aging degree of the insulator to be detected according to the gray value of the image.
Description
technical field [0001] The invention belongs to the technical field of electric equipment detection, in particular to a composite insulator shed aging detection method based on spectral imaging and a detection device thereof. Background technique [0002] The invention relates to the diagnosis of the aging state of electric equipment, in particular to a method suitable for diagnosing the aging state of silicone rubber composite insulators. Silicone rubber composite insulators are widely used in the distribution network of power equipment due to their strong hydrophobicity and high pollution flashover voltage. However, due to long-term exposure to harsh natural environments, such as strong ultraviolet radiation and acid rain erosion, outdoor insulators will deteriorate their surface insulation state, showing reduced hydrophobicity, reduced material flexibility, and reduced corona inception voltage. It poses a potential threat to the safe operation of the power system. At pr...
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IPC IPC(8): G01R31/12G01N21/25G06T5/00G06T5/50G06T7/00
CPCG01N21/25G01R31/1218G01R31/1245G06T5/002G06T5/50G06T7/0004G06T2207/10004G06T2207/20221G06T2207/30164
Inventor 任明王彬夏昌杰徐广昊董明张崇兴谢佳成胡一卓
Owner 四川恒创天地自动化设备有限公司