Details
| Original language | English |
|---|---|
| Pages | 622-625 |
| Number of pages | 4 |
| Publication status | Published - 1994 |
| Event | 1994 IEEE 4th International Conference on Properties and Applications of Dielectric Materials. Part 2 (of 2) - Brisbane, Aust Duration: 3 Jul 1994 → 8 Jul 1994 |
Conference
| Conference | 1994 IEEE 4th International Conference on Properties and Applications of Dielectric Materials. Part 2 (of 2) |
|---|---|
| City | Brisbane, Aust |
| Period | 3 Jul 1994 → 8 Jul 1994 |
Abstract
This paper introduces a new method of PD localization in a transformer. For this purpose, the electrical PD signals are decoupled via the transformer-bushings. After digitizing, the energy share of reference signals with known origins in each PD pulse is processed. Therefore, the PD pulse is computed via the Karhunen-Loeve-transform to one spectral component of the obtained spectrum. The quotient of this spectral component and the energy of the PD pulse is used for classifying pulses with different origins. This way, the procedure is independent of the pulse-charges. The efficiency of this new localization method is demonstrated on signals measured on the coil of a distribution transformer. Another advantage of this method is the possibility of separating PD and pulse shaped noise signals, which is confirmed with signals measured on a distribution transformer and a power transformer. Finally, it is shown that the Karhunen-Loeve-transform also allows a very efficient data reduction of the sampled PD signals.
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
- Materials Science(all)
- Materials Chemistry
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1994. 622-625 Paper presented at 1994 IEEE 4th International Conference on Properties and Applications of Dielectric Materials. Part 2 (of 2), Brisbane, Aust.
Research output: Contribution to conference › Paper › Research › peer review
}
TY - CONF
T1 - New method of partial discharge localization on transformers via the Karhunen-Loeve-transform
AU - Wenzel, D.
AU - Borsi, H.
AU - Gockenbach, Ernst
N1 - Copyright: Copyright 2004 Elsevier B.V., All rights reserved.
PY - 1994
Y1 - 1994
N2 - This paper introduces a new method of PD localization in a transformer. For this purpose, the electrical PD signals are decoupled via the transformer-bushings. After digitizing, the energy share of reference signals with known origins in each PD pulse is processed. Therefore, the PD pulse is computed via the Karhunen-Loeve-transform to one spectral component of the obtained spectrum. The quotient of this spectral component and the energy of the PD pulse is used for classifying pulses with different origins. This way, the procedure is independent of the pulse-charges. The efficiency of this new localization method is demonstrated on signals measured on the coil of a distribution transformer. Another advantage of this method is the possibility of separating PD and pulse shaped noise signals, which is confirmed with signals measured on a distribution transformer and a power transformer. Finally, it is shown that the Karhunen-Loeve-transform also allows a very efficient data reduction of the sampled PD signals.
AB - This paper introduces a new method of PD localization in a transformer. For this purpose, the electrical PD signals are decoupled via the transformer-bushings. After digitizing, the energy share of reference signals with known origins in each PD pulse is processed. Therefore, the PD pulse is computed via the Karhunen-Loeve-transform to one spectral component of the obtained spectrum. The quotient of this spectral component and the energy of the PD pulse is used for classifying pulses with different origins. This way, the procedure is independent of the pulse-charges. The efficiency of this new localization method is demonstrated on signals measured on the coil of a distribution transformer. Another advantage of this method is the possibility of separating PD and pulse shaped noise signals, which is confirmed with signals measured on a distribution transformer and a power transformer. Finally, it is shown that the Karhunen-Loeve-transform also allows a very efficient data reduction of the sampled PD signals.
UR - http://www.scopus.com/inward/record.url?scp=0028749555&partnerID=8YFLogxK
M3 - Paper
AN - SCOPUS:0028749555
SP - 622
EP - 625
T2 - 1994 IEEE 4th International Conference on Properties and Applications of Dielectric Materials. Part 2 (of 2)
Y2 - 3 July 1994 through 8 July 1994
ER -