Insulator Defect Detection and Recognition Method Based on Ultraviolet Imaging

Abstract

The invention discloses an insulator defect detection and recognition method based on an ultraviolet imaging method. The collected original RGB color ultraviolet image is grayscaled to obtain a grayscale image Y; the grayscale image is Gaussian filtered to suppress noise and grayscale Degree image Y is convolved with a Gaussian template to obtain an image after suppressing noise; binarize the obtained image to obtain a binary image; calculate the connected domain of the binary image; three defect insulators form a group, and each group of insulators Continuously collect 100 frames of ultraviolet pictures for each defect; process the sample pictures and calculate the connected domain of the image, and the three values ​​constitute the feature description of the defect type; use the SVM classifier to train three defect recognition models; detect insulators. The invention utilizes the image processing method and the machine learning method to not only locate the position of the defect of the insulator, but also determine the type of the defect, thereby reducing the pressure of manual inspection.

Description

technical field [0001] The invention relates to an insulator defect detection and identification method. Background technique [0002] With the continuous expansion of power transmission scale, the first concern is how to ensure the safe and effective operation of power transmission lines. Insulators are devices installed between different components that can withstand voltage and mechanical effects, and play an important role in power transmission lines. Fixed suspension through insulators can increase the transmission distance. The insulation function can reduce the capacitive reactance between wires and reduce the loss of current. Therefore, insulators are widely used in overhead lines and are often seen in daily life. Since the insulator is exposed to the air for a long time, it is easily affected by lightning, icing, pollution, etc., which will cause problems such as self-exposure, damage, and dirt of the insulator. In order to ensure the safe and reliable operation o...

AI Technical Summary

Problems solved by technology

[0004] Leakage Current refers to the current flowing through the surface of the insulator, which is collected by relevant devices and transmitted to the background control center for further processing and analysis. Generally, the number of pulses and the maximum value of the leakage current are used to characterize the operation of the insulator state, this method is generally recognized by practitioners in the power industry at present, it is easy to realize online monitoring, and the effect is good, but this method is a contact detection method, and the installation of sensors and the maintenance of the monitoring system require a lot of work

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