A wavelet-based differential transformer protection |
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| Authors: | Gomez-Morante M. Nicoletti D.W. |
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| Affiliation: | Worcester Polytech. Inst., MA; |
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| 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 |
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