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10110 Coordinated Efforts to Sustain Stray Current Mitigation on an Aging Heavy-Rail DC Transit System

Picture for 10110 Coordinated Efforts to Sustain Stray Current Mitigation on Aging Heavy-Rail DC Transit System
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Product Number: 51300-10110-SG
ISBN: 10110 2010 CP
Author: Timothy Ledbetter and Robert Vail
Publication Date: 2010
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Much has been written to address various aspects of designing heavy-rail DC transit systems to minimize stray current interference. Most modern heavy-rail DC transit systems are designed with ungrounded traction power distribution systems to control stray current at the source. As a transit system ages, sustaining the stray current mitigation near the as-constructed condition requires a coordinated effort that involves the transit agency and operators of neighboring structures. This paper briefly discusses some design features of an ungrounded traction power distribution system and the stray current that can be produced by DC transit operations. Guidelines are then presented as tools for the development of a coordinated effort to meet the challenges of sustaining effective stray current control.

Keywords: DC transit system, stray current, mitigation, traction power distribution, interference, track-to-earth resistance, track-to-earth potential, coordinated effort, education, communication, cooperation
Much has been written to address various aspects of designing heavy-rail DC transit systems to minimize stray current interference. Most modern heavy-rail DC transit systems are designed with ungrounded traction power distribution systems to control stray current at the source. As a transit system ages, sustaining the stray current mitigation near the as-constructed condition requires a coordinated effort that involves the transit agency and operators of neighboring structures. This paper briefly discusses some design features of an ungrounded traction power distribution system and the stray current that can be produced by DC transit operations. Guidelines are then presented as tools for the development of a coordinated effort to meet the challenges of sustaining effective stray current control.

Keywords: DC transit system, stray current, mitigation, traction power distribution, interference, track-to-earth resistance, track-to-earth potential, coordinated effort, education, communication, cooperation
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