Apparatus and method for measurement of corona discharge of power facilities by UV sensor with optic lens

• US 20110273560A1
• Filed: 08/17/2010
• Published: 11/10/2011
• Est. Priority Date: 05/04/2010
• Status: Active Grant

• Current Assignee: Korea Electrical Safety Corporation (Government of South Korea)
• Original Assignee: Korea Electrical Safety Corporation (Government of South Korea)
• Inventors: Kim, Young Seok, Shong, Kil Mok
• Granted Patent: US 8,405,719 B2
• Time in Patent Office: Days
• US Class Current: 348/135
• CPC Class Codes: G01N 21/33 using ultraviolet light G01N21/39 takes precedence
• CPC Class Codes: G01N 21/88 Investigating the presence of flaws or contamination
• CPC Class Codes: G01R 31/1218 using optical methods; using charged particle, e.g. electron, beams or X-rays

Abstract

The present disclosure relates to a method and apparatus for measuring corona discharge of power facilities by a UV sensor with an optical lens. The apparatus includes a UV sensor array receiving UV rays from an analyzing target of a power facility at a location separated a predetermined distance from the target, an optical lens unit focusing the UV rays to the UV sensor array, a signal detector detecting the UV rays in the form of a pulse voltage waveform signal, a UV image processor processing the detected pulse voltage waveform signal into a UV image, a real image measurement unit photographing a real image of the analyzing target, a real image processor displaying a photographed real image; a matching unit combining the photographed real image with the UV image, and an image/data output unit detecting a location of corona discharge based on the combined UV image and real image.

Claims

1. An apparatus for measuring corona discharge of power facilities using a UV sensor with an optical lens, comprising:

a UV sensor array including a plurality of sensors receiving UV rays emitted from an analyzing target of a power facility at a location separated a predetermined distance from the analyzing target;

an optical lens unit focusing the UV rays emitted from analyzing target of the power facility to the UV sensor array;

a signal detector detecting the UV rays received by the UV sensor array in the form of a pulse voltage waveform signal;

a UV image processor processing the detected pulse voltage waveform signal into a UV image on a screen;

a real image measurement unit disposed in front of the optical lens unit and photographing a real image of the analyzing target;

a real image processor displaying a photographed real image of the analyzing target on the screen;

a matching unit combining the photographed real image of the analyzing target with the UV image of the UV image processor; and

an image/data output unit detecting a location of corona discharge based on the combined UV image and real image.

2. The apparatus according to claim 1, wherein the real image measurement unit is inserted into and coupled to a center of the optical lens unit.

3. A method for measuring corona discharge of power facilities using a UV sensor with an optical lens, comprising:

focusing UV rays emitted from an analyzing target of a power facility by an optical lens unit at a location separated a predetermined distance from the analyzing target, and receiving the UV rays by a UV sensor array including a plurality of sensors;

detecting, by a signal detector, the UV rays received by the UV sensor array in the form of a pulse voltage waveform signal;

processing the detected pulse voltage waveform signal into a UV image on a screen by a UV image processor;

photographing a real image of the analyzing target by a real image measurement unit while displaying a photographed real image of the analyzing target on the screen by a real image processor;

combining the photographed real image of the analyzing target with the UV image of the UV image processor by a matching unit; and

detecting a location of corona discharge based on the combined UV image and real image by an image/data output unit.