Details
| Originalsprache | Englisch |
|---|---|
| Aufsatznummer | 6749571 |
| Seiten (von - bis) | 34-41 |
| Seitenumfang | 8 |
| Fachzeitschrift | IEEE Electrical Insulation Magazine |
| Jahrgang | 30 |
| Ausgabenummer | 2 |
| Publikationsstatus | Veröffentlicht - 2014 |
Abstract
The standardized frequency response analysis (FRA) method that measures four different frequency responses of transfer functions of voltage ratios, such as end-to-end opencircuit (EEOC), end-to-end short-circuit (EESC), capacitive (CAP), and inductive (IND) interwinding, is considered useful for detection of mechanical failures in transformer windings since the failures cause certain changes on measured frequency responses at frequencies from several tens of kilohertz to several hundreds of kilohertz where the interaction between electrical parameters of windings take place [1]¿[7]. However, the current draft standards can only provide a nonphysical assessment based on explanation of waveform change and evaluation of statistical coefficients calculated from comparisons of the standard frequency responses [1]¿[4]. It is therefore required that detailed information of physical electrical parameters of windings should be accompanied for a better diagnostic, since the current nonphysical assessment is not really efficient for all transformers with different power/voltage ratings in reality.
ASJC Scopus Sachgebiete
- Werkstoffwissenschaften (insg.)
- Elektronische, optische und magnetische Materialien
- Ingenieurwesen (insg.)
- Elektrotechnik und Elektronik
Zitieren
- Standard
- Harvard
- Apa
- Vancouver
- BibTex
- RIS
in: IEEE Electrical Insulation Magazine, Jahrgang 30, Nr. 2, 6749571, 2014, S. 34-41.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - A new diagnostic method to support standard frequency response analysis assessments for diagnostics of transformer winding mechanical failures
AU - Pham, D. A.K.
AU - Pham, T. M.T.
AU - Borsi, H.
AU - Gockenbach, Ernst
N1 - Copyright: Copyright 2014 Elsevier B.V., All rights reserved.
PY - 2014
Y1 - 2014
N2 - The standardized frequency response analysis (FRA) method that measures four different frequency responses of transfer functions of voltage ratios, such as end-to-end opencircuit (EEOC), end-to-end short-circuit (EESC), capacitive (CAP), and inductive (IND) interwinding, is considered useful for detection of mechanical failures in transformer windings since the failures cause certain changes on measured frequency responses at frequencies from several tens of kilohertz to several hundreds of kilohertz where the interaction between electrical parameters of windings take place [1]¿[7]. However, the current draft standards can only provide a nonphysical assessment based on explanation of waveform change and evaluation of statistical coefficients calculated from comparisons of the standard frequency responses [1]¿[4]. It is therefore required that detailed information of physical electrical parameters of windings should be accompanied for a better diagnostic, since the current nonphysical assessment is not really efficient for all transformers with different power/voltage ratings in reality.
AB - The standardized frequency response analysis (FRA) method that measures four different frequency responses of transfer functions of voltage ratios, such as end-to-end opencircuit (EEOC), end-to-end short-circuit (EESC), capacitive (CAP), and inductive (IND) interwinding, is considered useful for detection of mechanical failures in transformer windings since the failures cause certain changes on measured frequency responses at frequencies from several tens of kilohertz to several hundreds of kilohertz where the interaction between electrical parameters of windings take place [1]¿[7]. However, the current draft standards can only provide a nonphysical assessment based on explanation of waveform change and evaluation of statistical coefficients calculated from comparisons of the standard frequency responses [1]¿[4]. It is therefore required that detailed information of physical electrical parameters of windings should be accompanied for a better diagnostic, since the current nonphysical assessment is not really efficient for all transformers with different power/voltage ratings in reality.
KW - diagnostic method
KW - mechanical failure
KW - power transformer
KW - standard frequency responseanalysis assessment
UR - http://www.scopus.com/inward/record.url?scp=84896282093&partnerID=8YFLogxK
U2 - 10.1109/MEI.2014.6749571
DO - 10.1109/MEI.2014.6749571
M3 - Article
AN - SCOPUS:84896282093
VL - 30
SP - 34
EP - 41
JO - IEEE Electrical Insulation Magazine
JF - IEEE Electrical Insulation Magazine
SN - 0883-7554
IS - 2
M1 - 6749571
ER -