Zero value insulator automatic detection method and apparatus based on infrared image

Abstract

The invention discloses a zero value insulator automatic detection method based on an infrared image. The method comprises the following steps that an infrared image acquisition apparatus carries outimage acquisition on an insulator on a power transmission line so as to form a test image and sends the image to the outside world; a central processing unit receives the test image and carries out preprocessing so as to acquire a preprocessed infrared image; a characteristic area and a characteristic point of the preprocessed infrared image are acquired; the insulator is positioned and an insulator area is acquired; the insulator is segmented; and a zero value insulator is determined, if there is the zero value insulator, an industrial control computer emits an alarm sound, otherwise, there is no response. The invention also provides a zero value insulator automatic detection apparatus based on the infrared image. In the invention, the zero value insulator is determined; the insulator canbe accurately and automatically positioned; and accuracy of zero value insulator detection and determination can be effectively increased.

Description

technical field [0001] The invention relates to an automatic detection method and device for zero-value insulators in power transmission lines, and relates to the fields of power systems, pattern recognition and classification. Background technique [0002] In power systems, insulators are widely used insulators in transmission lines. However, during operation, they are gradually degraded by factors such as air pollution, electrical load, and mechanical stress, and eventually form zero-value insulators. If the insulator string is The presence of zero-value insulators can easily lead to flashover accidents, leading to grid paralysis, and a great threat to the insulation design of lines and the safe operation of power systems. Therefore, it is of great significance to detect whether there are zero-value insulators in the insulator string. Infrared detection technology is based on the difference between the thermal imaging characteristics of zero-value insulators and normal ins...

AI Technical Summary

Problems solved by technology

") Using infrared thermal imaging technology to detect the heating defects that are more likely to occur in suspension porcelain insulators, the results show that infrared thermal imaging technology is a fast and effective method for detecting heating defects of suspension porcelain insulators, and can eliminate insulator defects in time, but the Method relies on human judgment

[0004] From the above analysis, it can be seen that most of the current infrared detection technologies rely on manual judgment, or even through automatic judgment by machines, there are still problems such as inaccurate positioning of insulators and low judgment accuracy.

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