지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한전기학회 Journal of Electrical Engineering & Technology Journal of Electrical Engineering & Technology Vol.8 No.6
- 발행연도
- 2013.11
- 수록면
- 1,468 - 1,473 (6page)
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초록· 키워드
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This paper dealt with the propagation characteristics of acoustic signals produced by partial discharges and the positioning of PD origin in insulation oil to develop insulation diagnostic techniques of oil-immerged transformers. Electrode systems such as needle to plane, plane to plane, and particle electrodes were fabricated to simulate some defects of power transformers. In addition, the frequency spectrum and propagation characteristics of acoustic signals with partial discharge (PD) in insulation oil were analyzed. Although there were differences based on the type of defect, the frequency spectra of the acoustic signals measured by wide and narrow band acoustic emission (AE) sensors were distributed in the range of 50 kHz-400 kHz. Therefore, a narrowband AE sensor is suitable for the diagnosis of oil-immersed power transformers. We could find the position of the PD source with an error margin of 10% in the experiments by calculating the position of the PD occurrence using the time difference of arrival measured by five AE sensors.
목차
Abstract
1. Introduction
2. Experimental Set-up
3. Characteristic Analysis
4. Conclusion
References
참고문헌 (13)
참고문헌 신청
1. [학술지(정기간행물)] - M. MacAlpine. / 2002 / Development of a fiber-optic sensor for partial discharges in oil-filled power transformers / Electr. Power Syst. Res 63 (1) : 27 ~ 36
2. [학술지(정기간행물)] - H. Kawada. / 1984 / Partial discharges automatic monitor for oil-filled power transformer / IEEE Trans. Power Appar. Syst. PAS-103 (2) : 422 ~ 428
3. [학술지(정기간행물)] - Dae-Won Park / 2012 / Frequency Spectrum Analysis of Electromagnetic Waves Radiated by Electric Discharges / Journal of Electrical Engineering & Technology 7 (3) : 389 ~ 395
4. [학술지(정기간행물)] - S. Coenen. / 2008 / Sensitivity of UHF PD measurements in power transformers / IEEE Transactions on Dielectrics and Electrical Insulation 15 (6) : 1553 ~ 1558
5. [학술지(정기간행물)] - Kwang-Jin Lim / 2008 / A Study on the Design of a Planar Loop Sensor for Partial Discharge Diagnosis of 22.9 kV XLPE Power Cables / Journal of Electrical Engineering & Technology 3 (4) : 559 ~ 565
2. [학술지(정기간행물)] - H. Kawada. / 1984 / Partial discharges automatic monitor for oil-filled power transformer / IEEE Trans. Power Appar. Syst. PAS-103 (2) : 422 ~ 428
3. [학술지(정기간행물)] - Dae-Won Park / 2012 / Frequency Spectrum Analysis of Electromagnetic Waves Radiated by Electric Discharges / Journal of Electrical Engineering & Technology 7 (3) : 389 ~ 395
4. [학술지(정기간행물)] - S. Coenen. / 2008 / Sensitivity of UHF PD measurements in power transformers / IEEE Transactions on Dielectrics and Electrical Insulation 15 (6) : 1553 ~ 1558
5. [학술지(정기간행물)] - Kwang-Jin Lim / 2008 / A Study on the Design of a Planar Loop Sensor for Partial Discharge Diagnosis of 22.9 kV XLPE Power Cables / Journal of Electrical Engineering & Technology 3 (4) : 559 ~ 565
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