Elektromagnetische Verträglichkeit der Traktionsystemen 3 kV DC und 25 kV, 50 Hz der ČD, Probleme und Lösungen

Abstract

The paper analyses three fundamental characteristics (displacement power factor DPF, harmonics and load symmetrie), that describe the electromagnetic compatibility (EMC) of both Czech rail traction systems under requirements of the electric energy deliveres. For the 3 kV DC traction system the paper points out, that all EMC - requirements of the energy deliveres have been fulfilled up to this time owing to using of the 12-pulse traction substation rectifier. On the other hand a complementation of all traction substations with a filter-compensation-equipment (FKZ) is necessary because of undesirable EMC - properties of the electric motive power. Two constructions of the FKZ are given with instructions for their adjusting. Finally directions are given for FKZ-design that ensured the required traction substation input impedance for the remote control frequency.