Modelling of a 25 kV-50 Hz Railway Infrastructure for Harmonic Analysis

Caroline Stackler (1, 2) , Florent Morel (1, 3) , Philippe Ladoux (4) , Piotr Dworakowski (1)

1 SuperGrid Institute SAS
2 LAPLACE - LAboratoire PLasma et Conversion d'Energie
3 EE - Ampère, Département Energie Electrique
4 LAPLACE-CS - Convertisseurs Statiques

This paper presents a methodology for the modelling of a 25 kV-50 Hz railway infrastructure, for frequencies from 0 to 5 kHz. It aims to quantify the amplifications of current and voltage harmonics generated by on-board converters into the infrastructure. A circuit is developed to model the skin effect in the overhead line for time-domain simulations. A new approach, based on state space representation and transfer functions, is also proposed to analyze the interactions between trains. The methodology is then applied in Matlab-Simulink and validated with EMTP-RV. Harmonic interactions between the infrastructure and on-board converters are analyzed. Then, an extension of the model is proposed for higher frequencies in order to study harmonic interactions between new on-board converters and the infrastructure.

Mots clés: railway supply; impedance; skin effect; state space representation; harmonic interactions; EMC

Domaines: Energie électrique; Electronique; Electromagnétisme

Caroline Stackler, Florent Morel, Philippe Ladoux, Piotr Dworakowski. Modelling of a 25 kV-50 Hz Railway Infrastructure for Harmonic Analysis. European Journal of Electrical Engineering, 2020, 22 (2), pp.87-96. ⟨10.18280/ejee.220201⟩. ⟨hal-03120724⟩