Partial discharge detection method based on multi-source image fusion

Abstract

The invention relates to a partial discharge detection method based on multi-source image fusion. The partial discharge detection method based on multi-source image fusion is characterized in that S100, an ultrasonic sensor array, a camera, an infrared thermal imager, and an ultraviolet imager are respectively used to acquire ultrasonic wave signals, visible images, infrared images, and ultraviolet images of a detected device synchronously; S 200, the ultrasonic visible images can be acquired based on the acquired ultrasonic wave signals and the visible images; S 300, the ultrasonic visible images, the infrared images, the ultraviolet images can be used as the partial discharge detection result after being fused by adopting the image fusion algorithm, and can be displayed. Compared to the prior art, the partial discharge detection method has advantages of detection precision and high reliability.

Description

technical field [0001] The invention relates to the field of electrical equipment discharge detection, in particular to a partial discharge detection method based on multi-source image fusion. Background technique [0002] With the rapid development of grid scale, the number of electrical equipment is increasing rapidly. Since most of the high-voltage electrical equipment is arranged outdoors, it is greatly affected by the environment. Before the failure of outdoor substation equipment, partial discharge often occurs, and the discharge source will produce acoustic, electrical and chemical effects. Experienced operators can often use ultrasonic, ultraviolet and infrared equipment to detect hidden dangers in advance and prevent accidents. [0003] In many years of practice, the effectiveness of ultrasonic, ultraviolet and infrared detection methods has been greatly affirmed, but limited by the level of detection technology, single-principle detection methods have their own a...

AI Technical Summary

Problems solved by technology

[0003] In many years of practice, the effectiveness of ultrasonic, ultraviolet and infrared detection methods has been greatly affirmed, but limited by the level of detection technology, single-principle detection methods have their own advantages and disadvantages

[0004] 1. The use of ultrasound to detect discharge is very effective, and can reduce the interference of audible sound, but the directivity of ultrasound is strong, and it is easy to attenuate in the air. It often requires high sensitivity of the detection equipment, and at the same time, the detector needs to be rich. experience of;

[0005] 2. The commonly used infrared thermal imaging camera with the principle of uncooled focal plane has a high detection rate for heating defects, but it is often powerless for discharge faults;

[0006] 3. The ultraviolet imager has high detection sensitivity for discharge, but it is easy to be blocked, and it is powerless to discharge in hidden parts or inside

[0007] The existing single detection method mentioned above is difficult to meet the requirements of higher precision

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