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This paper presents a novel technique for distinguishing between transformer inrush currents and internal fault currents. On the basis of basic morphological transforms and their combined modes, transient current signals can be extracted meanwhile a variety of noises can be greatly suppressed by use of the novel morphological gradient (NMG) with adaptive weighting. Based on different characteristics...
This paper addresses a new relaying scheme for identifying the inrush current and short circuit current caused by internal fault on the basis of sudden changes detection using novel morphological gradient (NMG), transient current signals are then extracted by use of morphological opening and closing transform. Based on different characteristics of transient signals between the short circuit current...
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