Dynamic Stray Current Evaluations on Cut-and-Cover Sections of DC Metro Systems

The tunneling construction in underground DC Metro Systems is mainly based on the bored tunnel method and the cut-and-cover method. Therefore, the stray current assessments and mitigation actions should be tailored according to which method of tunnel construction is used. This paper presents a topologically accurate model for assessing the dynamic stray current picture in cut-and-cover sections of DC metro systems. The dynamic stray current evaluation can provide an indication to the extent of the corrosion problem in the supporting and third-party infrastructures of the system. In this paper, the dynamic evaluations are based on a combination of various ideal and realistic train operation scenarios.

[1]  Ian Cotton,et al.  Influence of Soil Structures on Corrosion Performance of Floating DC Transit Systems , 2007 .

[2]  F. Foiadelli,et al.  Stray Current Effects Mitigation in Subway Tunnels , 2012, IEEE Transactions on Power Delivery.

[3]  P. J. Aylott.  Stray current is for life-not just for Christmas. Stray current corrosion management strategies for DC traction systems , 1999 .

[4]  Charalambos A. Charalambous,et al.  Stray current control and corrosion limitation for DC mass transit systems , 2005 .

[5]  M. R. Irving,et al.  Iterative techniques for the solution of complex DC-rail-traction systems including regenerative braking , 1996 .

[6]  D. Paul.  DC traction power system grounding , 2001, Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248).

[7]  R. S. Thomas,et al.  Analysis of stray current, track-to-earth potentials and substation negative grounding in DC traction electrification system , 2001, Proceedings of the 2001 IEEE/ASME Joint Railroad Conference (Cat. No.01CH37235).

[8]  A. Mariscotti,et al.  Estimation of Stray Current From a DC-Electrified Railway and Impressed Potential on a Buried Pipe , 2012, IEEE Transactions on Power Delivery.

[9]  Charalambos A. Charalambous,et al.  A Simulation Tool to Predict the Impact of Soil Topologies on Coupling Between a Light Rail System and Buried Third-Party Infrastructure , 2008, IEEE Transactions on Vehicular Technology.

[10]  Charalambos A. Charalambous,et al.  Stray current control in DC mass transit systems , 2005, IEEE Transactions on Vehicular Technology.

[11]  I. Cotton,et al.  A Holistic Stray Current Assessment of Bored Tunnel Sections of DC Transit Systems , 2013, IEEE Transactions on Power Delivery.

[12]  Stephen B Scharper Hilary Cunningham Joanna Ebbutt,et al.  Montréal , 1991, American journal of public health and the nation's health.

[13]  Chien-Hsing Lee,et al.  Effects of grounding schemes on rail potential and stray currents in Taipei Rail Transit Systems , 2001 .

[14]  I. Cotton,et al.  Modeling for Preliminary Stray Current Design Assessments: The Effect of Crosstrack Regeneration Supply , 2013, IEEE Transactions on Power Delivery.