DocumentCode :
1252072
Title :
A wavelet-based differential transformer protection
Author :
Gomez-Morante, M. ; Nicoletti, Denise W.
Author_Institution :
Worcester Polytech. Inst., MA, USA
Volume :
14
Issue :
4
fYear :
1999
fDate :
10/1/1999 12:00:00 AM
Firstpage :
1351
Lastpage :
1358
Abstract :
Transformer inrush currents were traditionally evaluated by means of Fourier analysis. Such an approach affects the design of transformer differential relays concerning their immunity to inrush currents. This paper presents a wavelet-based method, which seems to provide a reliable and computationally efficient tool for distinguishing between internal faults and inrush currents
Keywords :
power transformer protection; relay protection; wavelet transforms; inrush currents; inrush currents immunity; internal faults; transformer differential relays; transformer inrush currents; wavelet-based differential transformer protection; Circuit faults; Frequency; Magnetic analysis; Magnetization; Power transformers; Protective relaying; Relays; Surge protection; Transient analysis; Wavelet analysis;
fLanguage :
English
Journal_Title :
Power Delivery, IEEE Transactions on
Publisher :
ieee
ISSN :
0885-8977
Type :
jour
DOI :
10.1109/61.796228
Filename :
796228
Link To Document :
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