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지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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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
- 1,487 - 1,496 (10page)
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초록· 키워드
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In this paper, a novel algorithm for PD localization in power transformers based on wavelet de-noising technique and energy criterion is proposed. Partial discharge is one of the main failures in power transformers. The localization of which could be very useful for maintenance systems. Acoustic signals due to a PD event are transient, irregular and non-repetitive. So wavelet transform is an efficient tool for this signal processing problem that gives a time-frequency demonstration. First, different wavelet based de-noising methods are analyzed. Then, a reasonable structure for threshold value determining and applying manner on signals is presented. Evaluated errors are good evidences for choices. Next, applying the elimination low energy frequency bands is discussed and developed as a de-noising method. Time differences between signals are used for PD localization. Different ways in time arrival detection are introduced and a novel approach in energy criterion method is presented. At the end, the quality of algorithm is verified through the different assays in lab.
목차
Abstract
1. Introduction
2. Wavelet Based De-noising
3. AE based PD localization
4. Experimental Results
5. Conclusion
References
참고문헌 (25)
참고문헌 신청
1. [학술지(정기간행물)] - P. Kundu. / 2008 / Classification of Acoustic Emission Based Partial Discharge in Oil Pressboard Insulation System Using Wavelet Analysis / International Journal of Electrical and Electronics Engineering 1 (4) : 208 ~ 215
2. [학술지(정기간행물)] - T. Boczar. / 2004 / Application of Wavelet Analysis to Acoustic Emission Pulses Generated by Partial Discharges / IEEE Trans. Dielectrics and Electrical Insulation 11 (3) : 433 ~ 449
3. [학술지(정기간행물)] - E. Grossman. / 2005 / Sensitive Online PDMeasurements of Onsite Oil/Paper-Insulated Devices by Means of Optimized Acoustic Emission Techniques(AET) / IEEE Trans. Power Delivery 20 (1) : 158 ~ 162
4. [학술지(정기간행물)] - A. Kelen / 1995 / Trends in PD diagnostics. When new options proliferate, so do old and new problems / IEEE Trans. Dielectrics and Electrical Insulation 2 (4) : 529 ~ 534
5. [학술대회논문] - J. L. Kirtley. / 1987 / Acoustic monitoring of transformer structures / In Proc. CIGRE Symposium on “New and Improved Materials for Electro-Technology : 1 ~ 5
2. [학술지(정기간행물)] - T. Boczar. / 2004 / Application of Wavelet Analysis to Acoustic Emission Pulses Generated by Partial Discharges / IEEE Trans. Dielectrics and Electrical Insulation 11 (3) : 433 ~ 449
3. [학술지(정기간행물)] - E. Grossman. / 2005 / Sensitive Online PDMeasurements of Onsite Oil/Paper-Insulated Devices by Means of Optimized Acoustic Emission Techniques(AET) / IEEE Trans. Power Delivery 20 (1) : 158 ~ 162
4. [학술지(정기간행물)] - A. Kelen / 1995 / Trends in PD diagnostics. When new options proliferate, so do old and new problems / IEEE Trans. Dielectrics and Electrical Insulation 2 (4) : 529 ~ 534
5. [학술대회논문] - J. L. Kirtley. / 1987 / Acoustic monitoring of transformer structures / In Proc. CIGRE Symposium on “New and Improved Materials for Electro-Technology : 1 ~ 5
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