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In order to solve the problem of mis-operation of transformer differential relay owing to the inrush current, internal faults and inrush current must be discriminate effectively. In this paper, a novel approach of identification between inrush current and internal faults based on hyperbolic S-transform (HST) which is a very powerful tool for nonstationary signal analysis giving the information of...
A novel approach to identify inrush current and internal fault current for power transformer protection based on generalized S-transform is presented. Generalized S-transform is a very powerful tool for non-stationary signal analysis giving the information of transient currents both in time and in frequency domains. It is used to extract patterns from inrush current and internal faults. The time-frequency...
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