Assessment of grounding schemes on rail potential and stray currents in a DC transit system

Author

Lee, Chien-Hsing ; Lu, Chien-Jung

Author_Institution

Dept. of Syst. & Naval Mechatronic Eng., Nat. Cheng Kung Univ., Tainan

Volume

21

Issue

4

fYear

2006

Firstpage

1941

Lastpage

1947

Abstract

This paper studies the effects of different grounding strategies, including ungrounded, solidly grounded, and diode grounded on rail potential and stray currents in the Taipei Rail Transit Systems (TRTS). The TRTS is a dc transit railway and the running rails are used as the return conductor for traction currents. The advantage is that no dedicated return conductor is required while the disadvantages are rail potential and stray current problems. Thus, the analysis of grounding strategies is important and necessary. Sample simulation results for the red line between Tamshui (R33) and Chuwei (R31) stations are presented

Keywords

earthing; railway electrification; rapid transit systems; DC transit railway; Taipei Rail Transit Systems; diode grounding; grounding schemes; grounding strategies; rail potential currents; return conductors; stray currents; traction currents; Circuits; Conductors; Control systems; Diodes; Grounding; Immune system; Local government; Rail transportation; Road transportation; Steel; Diode grounded; direct grounded; rail potential; stray currents; ungrounded;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/TPWRD.2006.874561

Filename

1705553