The Transactions of the Korean Institute of Electrical Engineers C (대한전기학회논문지:전기물성ㆍ응용부문C)

The Korean Institute of Electrical Engineers (대한전기학회)
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Characteristics and Signal Analysis of Fiber-optic Sensor for Detecting Ultrasonic Waves Generated by Discharge in Insulation Oil

유중 방전에 의한 초음파 측정용 광섬유 센서 특성 및 측정 데이터 분석

  • 이상훈 (영남대 공대 전자정보공학부) ;
  • 송현직 (구미1대학 컴퓨터응용전기전공) ;
  • 이광식 (영남대 공대 전자정보공학부) ;
  • 김달우 (포항산업과학연구원(RIST))
  • Published : 2003.10.01
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Abstract

It is well known that a discharge in oil is the source of various physical phenomena. Ultrasonic-wave detection is a useful method to the diagnosis of the transformer-insulation condition. Conventionally, ultrasonic waves are detected by Piezo-electric transducer, and we use optical method that has many advantages. In this paper, we constructed a Mach-Zehnder interferometer with optical fiber and investigated the principle of operation. Test arrangement is based on the needle-plane electrode system in oil and applied AC high voltage. Ultrasonic waves were detected and analyzed with wavelet transform.

Keywords

References

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