NDLI: Distribution of the traction return current in AT electric railway systems

Content Provider	IEEE Xplore Digital Library
Author	Mariscotti, A. Pozzobon, P. Vanti, M.
Copyright Year	1986
Abstract	The problem of determination of the accurate distribution of the return current in AT (autotransformer) electric traction systems (supplied at 2/spl times/25 kV) for High Speed Railways is considered. The path of the traction return current flowing from the rolling stock axles back to the supply (i.e., substation) is composed of the traction rails and additional earth potential conductors. The overhead supply conductors in contact with the train pantograph are connected to a symmetrical circuit (the feeder) with the purpose of current balancing. This arrangement and its influence on current to earth are considered: the return current divides among rails (as signalling disturbing current) and earth, depending on the value of the electric parameters of the system and the earth and on the circuit arrangement and on the relative position of system devices. The amplitude (as a percentage of the total return current) of the disturbing current may be high enough to cause interference to signalling. This work investigates the behavior of the return current in AT electric railway systems, on the basis of a reference system for the variation of the most important electrical parameters.
Sponsorship	IEEE Power Engineering Society
Starting Page	2119
Ending Page	2128
Page Count	10
File Size	1210474
File Format	PDF
ISSN	08858977
Volume Number	20
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-07-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Rail transportation Circuits Earth Insulation life Interference Frequency conversion Electromagnetic compatibility Voltage Axles Conductors power system harmonics Guideway transportation power systems power distribution interference
Content Type	Text
Resource Type	Article
Subject	Energy Engineering and Power Technology Electrical and Electronic Engineering

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