Ultraviolet image fault positioning and processing system and ultraviolet image fault positioning and processing method both used for corona detection

Abstract

The invention provides a ultraviolet image fault positioning system which comprises a light splitter, a solar blind filter, a visible lens, a visible imaging CCD (charge coupled device), an ultraviolet lens, a ultraviolet image detector, a image processing unit and an image synthesis unit. The light splitter splits target light radiation signals into two branches of light including transmission light and reflection light, the transmission light penetrates the visible lens to enter the visible imaging CCD, the reflection light passes the solar blind filter and then penetrates the ultraviolet lens to enter, and ultraviolet images of the ultraviolet image detector after being performed image processing by the image processing unit together with ordinary images formed by the visible imaging CCD are output to the image synthesis unit to be processed to acquire synthesized output images. Ultraviolet dynamic images are analyzed and processed, so that background noise and thermal noise of the ultraviolet image detector are effectively inhibited; after the images are processed, corona discharging image signals of high-voltage equipment can be clearly observed, so that accuracy in positioning of high-voltage discharging fault points is effectively improved.

Description

Technical field [0001] The present invention relates to corona detection technology, in particular to an ultraviolet spectrum detection technology for corona detection. Background technique [0002] When the electric field strength on the surface of the overhead transmission line exceeds the free strength of the air molecules, the air molecules will be ionized. At this time, you can hear the "stab" discharge sound, smell the odor of ozone, and you can see the emission around the wire at night. Blue-violet fluorescence, this phenomenon is called "corona discharge" or "corona" for short. Corona consumes electric energy, and the pulsed electromagnetic waves generated during corona discharge will interfere with radio and high-frequency communications. In addition, corona will corrode the surface of the wire, thereby reducing the service life of the wire. [0003] At present, line inspections of overhead transmission lines mainly adopt far-infrared telescopes, ultrasonic corona detect...

AI Technical Summary

Problems solved by technology

The low-end UV image intensifier has a lot of noise and the image quality is poor; in addition, the performance index of the UV filter cannot reach the high-end advanced level.

Therefore, under the existing conditions, the imaging quality of the system is affected to a certain extent, and the noise is relatively large. When the signal is weak, the location of the fault point cannot be judged by direct observation by human eyes.

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