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The inrush current occurs when transformers are initially energized at no load, which lead to mal-operations of protective relays and issues of power quality. However, it is very necessary to discriminate between inrush condition and faulty condition for modern protection of power transformer. This paper presents an alternative approach of using artificial neural network for discrimination and detection...
This paper presents a new algorithm for transformer differential protection, based on pattern recognition of the instantaneous differential currents. A decision logic by wavelet Transform has been devised using extracted feature from differential currents due to internal fault and inrush currents. In this logic, diagnosis criterion is based on time difference of amplitudes of wavelet coefficients...
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