Title :
A wavelet-based differential transformer protection
Author :
Gomez-Morante, M. ; Nicoletti, Denise W.
Author_Institution :
Worcester Polytech. Inst., MA, USA
fDate :
10/1/1999 12:00:00 AM
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;
Journal_Title :
Power Delivery, IEEE Transactions on
