Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2000.07c
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- Pages.1936-1938
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- 2000
Diagnosis of Insulation Deterioration in Cast Resin Transformer Using Method of AE Measurement
음향 방출 측정법을 이용한 몰드변압기 열화진단
- Lee, Sang-Woo (School of Electrical and Electronic Engineering, Yeungnam University) ;
- Gu, Kyung-Chul (School of Electrical and Electronic Engineering, Yeungnam University) ;
- Kim, Seung-Gyu (School of Electrical and Electronic Engineering, Yeungnam University) ;
- Kim, In-Sik (School of Electrical and Electronic Engineering, Kyungil University) ;
- Lee, Dong-In (School of Electrical and Electronic Engineering, Yeungnam University) ;
- Kim, Ki-Chai (School of Electrical and Electronic Engineering, Yeungnam University) ;
- Park, Won-Zoo (School of Electrical and Electronic Engineering, Yeungnam University) ;
- Lee, Kwang-Sik (School of Electrical and Electronic Engineering, Yeungnam University)
- 이상우 (영남대학교 전기전자공학부) ;
- 구경철 (영남대학교 전기전자공학부) ;
- 김성규 (영남대학교 전기전자공학부) ;
- 김인식 (경일대학교 전기전자공학부) ;
- 이동인 (영남대학교 전기전자공학부) ;
- 김기채 (영남대학교 전기전자공학부) ;
- 박원주 (영남대학교 전기전자공학부) ;
- 이광식 (영남대학교 전기전자공학부)
- Published : 2000.07.17
Abstract
In this paper, a frequency spectra of AE (acoustic emission) signals detected from the partial discharges of an epoxy resin void and a cast resin transformer in operating were analyzed to offer the proper frequency range of AE signals from the corona discharge for the purpose of AE sensor selection, From these results, a frequency spectra of AE signals emitted from the corona discharges in the void of an epoxy resin sample were about 190[kHz] to 220[kHz] by the FFT(fast fourier transform), A frequency spectra of AE signals emitted from a cast. resin transformer with non-load were appeared to be downward of about 140[kHz] by the FFT, and then a frequency spectra of AE signals emitted from the above of cast resin transformer with load were appeared to increase from about 190[kHz] to 220[kHz] by the FFT.
Keywords