Elettrificazione 25 kV-50 Hz della rete FS della Sardegna. Studio dell'influenza reciproca tra il sistema di alimentazione e quello di trazione

The article illustrates the methodology adopted for a prior determination of the maximum values of imbalance in the voltages of the high tension three-phase transmission network from the traction load envisaged by reason of the forthcoming electrification in single-phase ac (25 kV - 50 Hz) of the FS main line in Sardinia. The results obtained, both in fully in-service and out of service conditions of some of the main components of the electrical system, have made it possible to obtain indications regarding the adequacy of the solutions envisaged for the feed of the traction load, as well as to evaluate the influence of certain provisions to be respected during operation in the electric traction sub-stations, with the aim of reducing the imbalances in the three-phase network.