The design for the conductor rail gaps of a rapid transit system complies with service and maintenance criteria for crossovers, pocket track turnouts, walkway side variations, terminal stations, and different power supply sections. The collector shoes of a moving train passing the gaps will produce mechanical abrasion and switching transient characteristics. If the transient voltage is very large, it will produce electrical erosion on the leaving termination of the conductor rail. Maintenance technicians must often replace the damaged components beside the gaps with a new one to maintain service quality, thus, deciding the position and the type of the gaps to reduce arc voltage is very important. This study analyzed transient voltage of Taipei transit train passing crossovers, pocket track turnouts, and the distinct power supply section from deducing electrical circuits. If non-bridgeable gaps are replaced with bridgeable gaps, the bridgeable gaps will produce more arcing current than non-bridgeable gaps for the circuit from transient to steady state. The analysis results indicate that the magnitude of transient voltage depends on the charge and discharge time of the line impedance, the train operation speed and the overlap time of the two collector shoes touching the two sides of the conductor rail.
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IEEE/ASME/ASCE 2008 Joint Rail Conference
April 22–24, 2008
Wilmington, Delaware, USA
Conference Sponsors:
- Rail Transportation Division
ISBN:
0-7918-4812-4
PROCEEDINGS PAPER
Electrical Transients Analysis for Conductor Rail Gaps of Taipei Rapid Transit System
Nanming Chen
,
Nanming Chen
National Taiwan University of Science and Technology, Taipei, Taiwan
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Wen-Lin Shih
,
Wen-Lin Shih
National Taiwan University of Science and Technology, Taipei, Taiwan
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Yii-Shen Tzeng
Yii-Shen Tzeng
Oriental Institute of Technology, Taiwan, China
Search for other works by this author on:
Nanming Chen
National Taiwan University of Science and Technology, Taipei, Taiwan
Wen-Lin Shih
National Taiwan University of Science and Technology, Taipei, Taiwan
Yii-Shen Tzeng
Oriental Institute of Technology, Taiwan, China
Paper No:
JRC2008-63027, pp. 343-350; 8 pages
Published Online:
June 8, 2009
Citation
Chen, N, Shih, W, & Tzeng, Y. "Electrical Transients Analysis for Conductor Rail Gaps of Taipei Rapid Transit System." Proceedings of the IEEE/ASME/ASCE 2008 Joint Rail Conference. IEEE/ASME/ASCE 2008 Joint Rail Conference. Wilmington, Delaware, USA. April 22–24, 2008. pp. 343-350. ASME. https://doi.org/10.1115/JRC2008-63027
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