Ultraviolet image corona identification and positioning method and system based on image fusion

Abstract

The invention relates to the technical field of image fusion, in particular to an ultraviolet image corona recognition and positioning method and system based on image fusion. According to the invention, when the visible light image and the ultraviolet image are collected, the resolution of the visible light image and the resolution of the ultraviolet image are ensured to be the same, so that the conditions are the same when enhancement and gray processing are carried out later, the system error is reduced, and the fusion precision is improved. According to the method, the equipment on the visible light image is matched with the equipment in the database, which equipment generates corona can be automatically identified without manual identification, and the method can be associated with a rear-end monitoring system to give a prompt about which equipment generates corona. Equipment templates in the database comprise insulation equipment image templates such as a transformer image template and an insulator image template.

Description

technical field [0001] The invention relates to the technical field of image fusion, in particular to an image fusion-based ultraviolet image corona identification and positioning method and system. Background technique [0002] With the continuous improvement of the driving voltage level of high-voltage equipment and long-term work in harsh environments, insulation damage of high-voltage equipment occurs frequently, and insulation accidents account for a large proportion of accidents in the entire power system. In an insulation accident, some insulating parts of high-voltage equipment will generate corona discharge under the action of a strong electric field, and corona discharge will cause more serious insulation damage, generate high-order harmonics to interfere with communication, and cause chemical reactions in the air, etc. harm. Therefore, it is of great significance to detect whether corona discharge is generated, which can effectively reflect the insulation state o...

AI Technical Summary

Problems solved by technology

[0003] According to physical phenomena such as sound, heat, and light that accompany corona discharge of high-voltage equipment, ultrasonic detection methods, infrared imaging detection methods, and ultraviolet imaging methods have been developed to judge the location or discharge intensity of corona discharge, among which the most used The most common and most advanced performance is the ultraviolet imager, but the ultraviolet imager is expensive and expensive, and is not suitable for large-scale promotion and use. The invention patent 201820742059.1-ultraviolet detection high-voltage equipment corona discharge visual device and system uses ultraviolet photosensitive tubes The setting can greatly reduce the cost of detection, but the quality of the obtained image cannot be guaranteed

Invention patent 201811121658.2 - A target recognition method and device based on ultraviolet imaging corona detection It is mentioned that leakage detection and image fusion processing can be realized, but it does not give a method to improve the fusion accuracy

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