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Computation and Validation of Rail-to-Earth Potential for Diode-Grounded DC Traction System at Taipei Rapid Transit System

[+] Author Affiliations
Bih-Yuan Ku

National Taipei University of Technology, Taipei, Taiwan

Thomas Hsu

Siemens, Ltd., Taipei, Taiwan

Paper No. RTD2004-66024, pp. 41-46; 6 pages
  • ASME/IEEE 2004 Joint Rail Conference
  • Joint Rail
  • Baltimore, Maryland, USA, April 6–8, 2004
  • Conference Sponsors: Rail Transportation Division
  • ISBN: 0-7918-4163-4
  • Copyright © 2004 by IEEE


In this paper we present a case study of frequent surges of unusually high rail-to-earth potential values at Taipei Rapid Transit System. The rail potential values observed and the resulting stray current flow associated with the diode-ground DC traction system during operation are contradictory to the moderate values on which the grounding of the DC traction system design was based. Thus we conducted both theoretical study and field measurements to obtain better understanding of the phenomenon, and to develop a more accurate algorithm for computing the rail-to-earth potential of the diode-ground DC traction systems.

Copyright © 2004 by IEEE



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