Details
| Original language | English |
|---|---|
| Article number | 6749571 |
| Pages (from-to) | 34-41 |
| Number of pages | 8 |
| Journal | IEEE Electrical Insulation Magazine |
| Volume | 30 |
| Issue number | 2 |
| Publication status | Published - 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.
Keywords
- diagnostic method, mechanical failure, power transformer, standard frequency responseanalysis assessment
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Engineering(all)
- Electrical and Electronic Engineering
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: IEEE Electrical Insulation Magazine, Vol. 30, No. 2, 6749571, 2014, p. 34-41.
Research output: Contribution to journal › Article › Research › 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 -