Development of UV Corona Camera for the Detecting of Discharge on Power Facility using UV Transmittance Improvement Filter
Young-Seok Kim, Myeong-Il Choi, Chong-Min Kim, Sun-Bae Bang, Kil-Mok Shong · The Transactions of The Korean Institute of Electrical Engineers · 2012
UV inspection technology is being used for predictive maintenance of power facility together with IR-thermography and ultrasonic devices. In this paper, the UV corona camera design, fabrication, and perform a simple test to be take advantage of the diagnostic equipment. The UV corona camera developed a 6.4 °×4.8 ° of the field of view as a conventional camera to diagnose a wide range of slightly enlarged, and power equipment to measure the distance between the camera and the distance meter has been attached. The transmission between 250 to 280㎚ was 11% (12.5% x 88% x 98%) by combing the transmission on absorption film, window and other filter(UG 5, nickel sulphate and so on). In a distance of 5m with the UV corona camera it is possible to detect partial discharge with a PD level of 2.5pC and a RIV level of 3.6㏈㎶.