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Infrared image-assisted method of recognizing contamination condition of insulator by visible light image

An infrared image and image recognition technology is applied in the direction of optical testing of defects/defects, material analysis through optical means, and measuring devices. It can solve problems such as power outages required for maintenance and repair, limited processing time, and difficulty in wide application. The effect of safe and reliable use, improved accuracy and efficiency, and on-site practicality

Active Publication Date: 2017-05-17
TONGJI UNIV
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Problems solved by technology

Although the leakage current method can reflect more serious insulation faults, the time left for the operator to deal with after the insulation failure is judged is limited, so it is difficult to be widely used, and it requires a set of detection devices to be installed on each insulator string, which is too expensive , the maintenance and overhaul of the device needs to be carried out with power off

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  • Infrared image-assisted method of recognizing contamination condition of insulator by visible light image
  • Infrared image-assisted method of recognizing contamination condition of insulator by visible light image
  • Infrared image-assisted method of recognizing contamination condition of insulator by visible light image

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Embodiment

[0048] The present invention proposes a method for identifying the pollution state of insulators based on visible light images assisted by infrared images, which can eliminate the influence of ambient light, and consider the relative humidity of the environment, quickly establish a simple and general insulator pollution level recognition model, and analyze the pollution state of a large number of insulators in current operation. Accurate and reliable analysis is made to provide a basis for timely cleaning of insulator pollution, so as to reduce insulator pollution flashover accidents.

[0049]see figure 1 , the present invention provides a method for recognizing the contamination state of an insulator based on an infrared image-assisted visible light image, comprising the following steps:

[0050] Step 10, collecting visible light images of insulators;

[0051] Use a digital camera to specifically collect visible light images of insulators;

[0052] In the specific implement...

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Abstract

The invention relates to an infrared image-assisted method of recognizing the contamination condition of an insulator by a visible light image. The method comprises the following steps: collecting the visible light image of the insulator, and performing visible light image processing and visible light characteristic value extraction of the insulator; collecting the infrared image of the insulator, and performing infrared image processing and infrared characteristic value extraction of the insulator; establishing a contamination level recognizing mathematic model based on the visible light image and an infrared image information-assisted visible light image contamination state recognizing mathematic model; and selecting a corresponding mathematic model to solve the contamination level of the insulator according to the environmental relative humidity. Compared with the prior art, the method provided by the invention has the advantages of removing the influence of environmental lighting, considering the influence of a high relative humidity environment on a visible light method, and being concise and universal in mathematic model.

Description

technical field [0001] The invention relates to a method for identifying the pollution state of an insulator, in particular to a method for identifying the pollution state of an insulator based on an infrared image-assisted visible light image. Background technique [0002] Insulators play an important role in transmission and distribution networks. Various particles or bird droppings such as dust, saline, and industrial smoke in the air will accumulate on the outer surface of the insulator to form a dirty layer, which will reduce the insulation strength of the insulator and cause pollution flashover. cause great economic losses. If the degree of pollution can be measured conveniently, safely, and accurately, and a reasonable cleaning plan can be formulated accordingly, pollution flashover can be prevented more effectively, the stable operation of the power grid can be strengthened, and economic losses caused by pollution flashover can be reduced. [0003] In order to accur...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/88
CPCG01N21/8851G01N2021/8887
Inventor 金立军田治仁艾建勇
Owner TONGJI UNIV
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