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A Study on the Safety Diagnosis for Power Systems Using a UV Camera

자외선 검출 카메라를 이용한 전력시스템의 안전진단에 관한 연구

  • Yu, Byeong-Yeol (Graduate School of Energy and Environment, Seoul National University of Science and Technology) ;
  • Kim, Chan-O (Department of Safety Engineering, Seoul National University of Science and Technology)
  • 유병열 (서울과학기술대학교 에너지환경대학원) ;
  • 김찬오 (서울과학기술대학교 안전공학과)
  • Received : 2011.11.07
  • Accepted : 2012.02.15
  • Published : 2012.02.29

Abstract

This paper describes the diagnosis techniques using UV images taken in the field under energized condition of power equipments in order to figure out and analyze the abnormal states on the terminals of power equipments. To classify the features of the terminals, the counted No. of the corona generated at the terminals is defined. According to the result detected, the No. of corona detected on the power equipments installed inside a building is less than that installed outside a building, and it strongly depends on the environment and installed condition. Thus, the environmental condition needs enhanced, and stable operation by the periodic inspection under energized condition of the power equipments is required. Especially, the event counting technique using UV camera is useful for the power equipments apart more than 20 m to apply, and there can be an error due to the features of the sensing techniques when the distance between the user and the objects is close less than 15 m. Therefore, the experimental result shows that event counting technique is employed in the case of the distance more than 15 m. The electrical safety can be ensured by using the UV detection technique and the criteria.

Keywords

diagnosis techniques;UV image;power equipment;terminal;No. of the corona

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