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Method for detecting insulator shedding defect of transmission line

A transmission line, defect detection technology, applied in the direction of instruments, character and pattern recognition, computer parts, etc., can solve the detection accuracy rate of insulator shedding defects, low recall rate, image segmentation and target detection errors, can not fully guarantee the image of insulators It can improve the detection accuracy, recall rate, and high detection accuracy by solving problems such as separation from background images.

Active Publication Date: 2018-01-30
CHENGDU SIHAN TECH
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (1) Image segmentation and target detection technology cannot fully guarantee the separation of the insulator image from the background image, there are certain errors in image segmentation and target detection, and the accuracy rate is low
[0006] (2) In the case of variable outdoor weather and environment, the accuracy and recall rate of insulator shedding defect detection are low

Method used

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Experimental program
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Embodiment Construction

[0024] The insulator shedding defect detection method of the transmission line of the present invention comprises the following steps:

[0025] A. Insulator annotation: obtain the insulator historical template image collection of the transmission line, and mark the corresponding position information of the insulator on each insulator historical template image;

[0026] B. Template screening: obtain the image of the insulator to be inspected of the transmission line, and then calculate the similarity between each image in the insulator historical template image collection and the insulator image to be inspected, and then select the insulator historical template image with the highest similarity as the detection template image;

[0027] C. Offset estimation and compensation of the image to be detected: the horizontal and vertical image pixel offsets x, y corresponding to the detection template image are used as the estimation result of the image offset, and the offset is used as...

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Abstract

The invention discloses a method for detecting an insulator shedding defect of a transmission line, wherein the method has the high insulator shedding defect detection accuracy and high recall rate and has the high detection precision especially on the conditions of changeable weather and environment. The method comprises: carrying out insulator marking; carrying out template screening; carrying out offset estimation and compensation of a to-be-detected image; carrying out defogging processing on the to-be-detected image and a detection template image; carrying out insulator target extraction;carrying out projection signal difference processing; and carrying out defect determination. With the detection method disclosed by the invention, the detection accuracy of the insulator shedding defect and the recall rate are improved; and the method has the high detection precision especially on the conditions of changeable weather and environment. The method is suitable for being popularized in the technical field of the transmission line detection.

Description

technical field [0001] The invention relates to the technical field of transmission line detection, in particular to a detection method for insulator shedding defects of power transmission lines. Background technique [0002] The transmission line is an important part of the power system, and it undertakes the task of long-distance transmission of electric energy. Power lines have been exposed to the natural environment for a long time, not only bearing natural tension, material aging and other self-damage, but also being eroded by lightning strikes, storms, rain and birds. If there is an insulator shedding defect in the transmission line, it will increase the risk of short circuit of the transmission line, which may cause serious accidents such as large-scale power outages and forest fires, resulting in huge economic losses and casualties. [0003] The traditional line inspection of transmission lines relies on manual inspection, but the efficiency of manual inspection is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62G06K9/40G06K9/34
Inventor 苏永生
Owner CHENGDU SIHAN TECH