NDLI: A new solution to inductive interference borrowed from electric railroad propulsion signal methodology

Content Provider	IEEE Xplore Digital Library
Author	Gilcher, H. Kwasizur, J.R. Lipsitz, I.
Copyright Year	1991
Description	Author affiliation: Union Switch & Signal Inc., Pittsburgh, PA, USA (Gilcher, H.)
Abstract	The mitigation of a severe case of inductive interference by using railroad signaling equipment designed for electrified railroad territory is detailed. In 1983, Consolidated Rail Corporation (Conrail) agreed to permit Philadelphia Electric Company (PECo) to build and operate a 230-kV transmission line on a seven-mile section of main line in suburban Philadelphia. It soon became apparent that only 600 MVA was sufficient to interrupt service and damage Conrail's signal facilities. A low-resistance path to ground for the 60-Hz interference currents was therefore provided. Since existing signal systems operating in electric propulsion territory provide this separate path, such equipment was used to resolve the induction problem in the subject nonelectrified railroad applications. Field measurements were taken with a transmission line load of 828 MVA and were used to predict the performance of the signal system at the maximum projected transmission line loading of 1418 MVA steady-state. Based on the calculated results, it was concluded that the signal system will operate satisfactorily at maximum load.<>
Starting Page	493
Ending Page	496
File Size	313068
Page Count	4
File Format	PDF
ISBN	0780301587
DOI	10.1109/ISEMC.1991.148283
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1991-07-12
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Interference Propulsion Transmission lines Magnetic fields Rails Conductors Signal design Steady-state Switches Transmission line measurements
Content Type	Text
Resource Type	Article

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