Journal of the Korean Institute of Illuminating and Electrical Installation Engineers (조명전기설비학회논문지)

The Korean Institute of IIIuminating and Electrical Installation Engineers (한국조명전기설비학회)
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Comparison of Discharge UV Intensity Due to AR Coating of Optic Lens on Polymer Insulator

광학렌즈 AR 코팅에 따른 폴리머애자에서의 방전 자외선 강도 비교

  • 김영석 (전기안전연구원 진단기술연구팀) ;
  • 송길목 (전기안전연구원 진단기술연구팀) ;
  • 방선배 (전기안전연구원 진단기술연구팀) ;
  • 김종민 (전기안전연구원 진단기술연구팀) ;
  • 최명일 (전기안전연구원 진단기술연구팀)
  • Received : 2012.01.17
  • Accepted : 2012.03.14
  • Published : 2012.04.30
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Abstract

In this study, the ultraviolet (UV) intensity of polymer insulator was measured using the Anti-Reflective (AR) coating lens on the occurrence of corona discharge. The UV intensity was compared before and after the AR coating. Under the 200-260[nm] of UV lens, the reflection rate before AR coating was 7.5~5.5[%] with 85-89[%] of transmission rate. After AR coating, however, the reflection rate decreased to 1.3~1.22[%] with improved transmission (97.4~97.6[%]). Then, the UV intensity by distance was measured in the polymer insulator. According to the measurement, the UV intensity increased 6.5 times at 37.5[%] of Vm/Vbd with 5[m] of distance. As distance increased, the growth rate declined. As high voltage increased, in addition, AR coating was less effective due to the count error caused by the UV sensor pulse signal overlap. Therefore, it appears that it would be more effective to detect corona discharge with 5[m] or less of distance at diagnosis of power facilities by AR coating and UV sensor sensitivity.

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References

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