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

• US 8,405,719 B2
• Filed: 08/17/2010
• Issued: 03/26/2013
• 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: Shong, Kil Mok, Kim, Young Seok
• Primary Examiner(s): Dastouri, Mehrdad
• Assistant Examiner(s): SANFORD, JOSEPH L
• Application Number:
  US12/806,578
• Publication Number:
  US 20110273560A1
• Time in Patent Office: 952 Days
• Field of Search: 250/330, 250/372, 348/135
• 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 of the power facility;

an optical lens unit focusing the UV rays emitted from the analyzing target of a 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 of the power facility, wherein the real image measurement unit is inserted into and coupled to a center of the optical lens unit;

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

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

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

2. 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 of the power facility, 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 of the power facility by a real image measurement unit while displaying a photographed real image of the analyzing target of the power facility on the screen by a real image processor, wherein the real image measurement unit is inserted into and coupled to a center of the optical lens unit;

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

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