PSCC - Power Systems Computation Conference Proceedings 1966 Part 2. [antikvár]

Report 4.1 REPRESENTATION DE PLUSIEURS SOUS-RESEAUX COUPLES MAGNETIQUEMENT PAR DES TRANSFORMATEURS par P. AUGES Ingénieur a la Direction des Etudes Recherches d'ELECTRICITE DE FRANCE I - RESEAU EQUIVALENT A UN RESEAU DONNE VU A TRAVERS DES TRANSFORMATEURS PARFAITS. II - REPRESENTATION DE PLUSIEURS SOUS-RESEAUX COUPLES PAR DES TRANSFORMATEURS A - Chaque réseau représenté a sa tension propre B - Tous les réseaux ramenés a une tension de base unique III - CHANGEMENT DES RAPPORTS DE TRANSFORMATION DES TRANSFORMATEURS REPRESENTATION OF VARIOUS SUB-NETWORKS COUPLED MAGNETICALLY BY TRANSFORMERS Summary; First of all we establish general formulas which allow us to take into account the presence of perfect transformers across each pair of terminals of a network. This consists in expressing the terms of new representative matrixes in function of terms of the initial matrixes. From these we simply deduce the changes to be made in the network. This having been done, we show that we can represent a group of sub-Networks magnetically coupled: - Either by conserving each network at its actual nominal voltage, the equivalent networks of transformers taking into account the ratio of transformation of the real transformers. - Or, by referring the group to one basic voltage. On both cases the change of ratio of transformation appears as a variation in the individual equivalent networks of transformers.