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5 HATZIARGYRIOU, N. D., PROUSALIDIS, J. M. and PAPADIAS, B. C.: 'Generalised transformer model based on analysis of its magnetic circuit', IEE Proceedings Part C, 1993, 140 (4), pp. 269 78

6 CHEN, X. S. and NEUDORFER, P.: 'The development of a three-phase multi-legged transformer model for use with EMTP', technical report, Dept. of Energy Contract DE-AC79-92BP26702, USA, 1993

7 LEON, F. D. and SEMLYEN, A.: 'Complete transformer model for electromagnetic transients', IEEE Transactions on Power Delivery, 1994, 9 (1), pp. 231 9

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9 ENRIGHT, W. G., WATSON, N. R. and ARRILLAGA, J.: 'Improved simulation of HVdc converter transformers in electromagnetic transients programs', Proceedings of IEE, Part-C