Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Ultrasonic Characteristics of Oil Corona by Wide-Band AE Sensor

광대역 AE 센서에 의한 유중코로나의 초음파 특성

  • Kim, In-Sik (Dept. of Electrical Engineering, Kyungil University) ;
  • Lee, Sang-Woo (School, of Electrical and Electronic Engineering, Yeungnam University) ;
  • Kim, Seung-Gyu (School, of Electrical and Electronic Engineering, Yeungnam University) ;
  • Gu, Kyung-Chul (School, of Electrical and Electronic Engineering, Yeungnam University) ;
  • Lee, Kwang-Sik (School, of Electrical and Electronic Engineering, Yeungnam University) ;
  • Lee, Dong-In (Dept. of Electrical Engineering, Kyungil University)
  • 김인식 (경일대학교 전기공학과) ;
  • 이상우 (영남대학교 전기전자공학부) ;
  • 김성규 (영남대학교 전기전자공학부) ;
  • 구경철 (영남대학교 전기전자공학부) ;
  • 이광식 (영남대학교 전기전자공학부) ;
  • 이동인 (영남대학교 전기전자공학부)
  • Published : 1999.07.19
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Abstract

In this paper measurements of AE (Acoustic Emission) signals caused by corona discharge were performed to analyze the electrical deterioration in oil. We also examined the relationship between discharge magnitude and peak-to-peak value of AE signals to diagnose the deterioration of liquid dielectrics. From these results, Vpp(peak to peak value) of AE signals was proportional to corona discharge magnitude. The main frequency band of AE signals in oil appeared to 130[kHz].

Keywords