ANN-Based Protection Scheme for Power Transformer

The implementation of a pattern recognizer for power system diagnosis can provide great advancement in the protection field. The work reported in this paper demonstrates the use of an Artificial Neural Network (ANN) as a pattern classifier for differential relay operation in the protection scheme for power transformer protection. The proposed relay takes care of maloperation due to inrush current, overexcitation, and ensures operation during internal fault. The off-line experimental result presented in this paper shows that a FeedForward Neural Network (FFNN) can be considered as an attractive alternative method to make the discrimination among normal, magnetizing inrush, overexcitation, and internal fault currents in a digital relay implementation. Results showing the performance of the protection scheme indicate that it is fast and reliable.

[1]  Pei Liu,et al.  Improved operation of differential protection of power transformers for internal faults , 1992 .

[2]  P. Bastard,et al.  Neural network-based algorithm for power transformer differential relays , 1995 .

[3]  M. R. Zaman,et al.  Artificial neural network based protection of power transformers , 1998 .

[4]  G. D. Rockefeller,et al.  Fault Protection with a Digital Computer , 1969 .

[5]  B. Kulicke,et al.  Neural network approach to fault classification for high speed protective relaying , 1995 .

[6]  M. S. Sachdev,et al.  Design, implementation and testing of a microprocessor-based high-speed relay for detecting transformer winding faults , 1992 .

[7]  Simon Haykin,et al.  Neural Networks: A Comprehensive Foundation , 1998 .

[8]  M. S. Sachdev,et al.  Online identification of magnetizing inrush and internal faults in three-phase transformers , 1992 .

[9]  G. Swift,et al.  Detection of high impedance arcing faults using a multi-layer perceptron , 1992 .

[10]  Zoran Obradovic,et al.  Training an artificial neural network to discriminate between magnetizing inrush and internal faults , 1994 .

[11]  Richard P. Lippmann,et al.  An introduction to computing with neural nets , 1987 .

[12]  Drago Dolinar,et al.  Improved operation of power transformer protection using artificial neural network , 1997 .

[13]  Denis V. Coury,et al.  Artificial neural network approach to distance protection of transmission lines , 1998 .

[14]  B. Jeyasurya,et al.  A state-of-the-art review of transformer protection algorithms , 1988 .

[15]  M. A. Rahman,et al.  Testing of algorithms for a stand-alone digital relay for power transformers , 1998 .