Title :
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
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;
Journal_Title :
Power Delivery, IEEE Transactions on
DOI :
10.1109/TPWRD.2006.874561
