Transformer simulation useful for harmonic analysis

A computer algorithm for the harmonic analysis on the steady state of singl e phase power systems containing a transformer saturation model is presente d in this paper. The model proposed has been developed on the finite differ ence numerical method. The algorithm illustrates the application of the mod el. The numerical results have been validated with PSpice simulation progra m. The method proposed exploits the double-diagonal structure of the matrix and a fast resolution algorithm is obtained. Different forms of representi ng transformer saturation have been analysed for improvement of the converg ence. (C) 1999 Elsevier Science Ltd. All rights reserved.