Automatic identification method of insulator chain infrared image

Abstract

The invention discloses the service field of the operating state of a power transmission and transformation device, in particular to an automatic identification method of an insulator chain infrared image. The technical schemes are that feature points of a monitoring image and a pattern plate image are extracted and a feature is described, thus a description vector quantity is produced and the feature is matched. Affine transformation is carried out on the pattern plate image, thus the position of the pattern plate image in the monitoring image is obtained. An identification area of the insulator chain is obtained by using the boundary of the position in the monitoring image. The insulator edge in the pattern plate image is detected by using an edge detection method, thus a coordinate of an edge point is obtained. Affine transformation is carried out on the edge point of the pattern plate image in the identification area of the insulator chain of an insulator chain infrared monitoring image, the edge point of the pattern plate image is indicated in the insulator chain infrared monitoring image, and thus the automatic identification of the insulator chain infrared image is completed. According to the automatic identification method of the insulator chain infrared image, the insulator chain in the infrared monitoring image can be precisely identified, thus the necessary technical support is provided for fault diagnosis and service of the insulator chain in the power transmission and transformation.

Description

technical field [0001] The invention belongs to the field of maintenance of the running state of power transmission and transformation equipment, and in particular relates to an infrared image automatic recognition method of an insulator string. Background technique [0002] The safe operation of the insulator string directly affects the safety and reliability of the power grid, so the status monitoring of the insulator string is very necessary. Since many failures of insulator strings are manifested by temperature anomalies, the application of infrared thermal imaging cameras can detect internal or external defects. However, only when the insulator string is identified on the infrared thermal image can it be quantitatively diagnosed. In addition, because the temperature of other equipment connected to the insulator string (such as the drain clamp, etc.) is higher than that of the insulator string, it is very easy to diagnose the fault They are misjudged as faults. Therefor...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that the existing infrared image recognition methods of insulator strings mentioned in the background technology are mostly studied in the laboratory environment, it is difficult to meet the actual needs of field engineering, the present invention proposes an automatic infrared image recognition method for insulator strings

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