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

fYear

1999

fDate

13-12 July 1999

Firstpage

101

Lastpage

106

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;

fLanguage

English

Publisher

iet

Conference_Titel

Electromagnetic Compatibility, 1999. EMC York 99. International Conference and Exhibition on (Conf. Publ. No. 464)

Conference_Location

York, UK

ISSN

0537-9989

Print_ISBN

0-85296-716-0

Type

conf

DOI

10.1049/cp:19990252

Filename

791035