Title :
Integrated modelling of audiofrequency track circuits
Author :
D´Addio, G. ; Ferrari, P. ; Mariscotti, A. ; Pozzobon, P.
Author_Institution :
Centro di Ricerca Trasporti, Genova Univ., Italy
Abstract :
A 25 kV AC railway system is considered, where the variable length (10-20 km) section comprised between two electrical substations (ESSs) is equipped with audiofrequency track circuits (both transformer and s-bond coupled). The railway system is modelled using multiconductor transmission line (MTL) approach; the ESSs, the vehicle and the tuning unit of the track circuit are described by means of their equivalent circuit. The results consist of the analysis of the influence of s-bond circuits on the rail-to-rail impedance and the calculation of the disturbing voltage at the receiver terminals produced by samples of locomotive traction current from field data.
Keywords :
railways; 25 kV; AC railway system; EMC; audiofrequency track circuits; disturbing voltage; electrical substation; equivalent circuit; field data; integrated modelling; interference; locomotive traction current; multiconductor transmission line; overhead line; rail-to-rail impedance; receiver terminals; s-bond coupled circuits; signalling equipment; transformer coupled circuits; tuning unit; vehicle;
Conference_Titel :
Electromagnetic Compatibility, 1999. EMC York 99. International Conference and Exhibition on (Conf. Publ. No. 464)
Conference_Location :
York, UK
Print_ISBN :
0-85296-716-0
DOI :
10.1049/cp:19990252
