New generation traction power supply system and its key technologies for electrified railways

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• 作者：Qunzhan Li (1)
  
  1. School of Electrical Engineering ; Southwest Jiaotong University ; Chengdu ; 610031 ; China
  
• 关键词：New generation traction power supply system ; Combined co ; phase power supply ; Bilateral power supply ; Segmental power supply technology ; Synchronous measurement and control
• 刊名：Journal of Modern Transportation
• 出版年：2015
• 出版时间：March 2015
• 年：2015
• 卷：23
• 期：1
• 页码：1-11
• 全文大小：969 KB
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  7. Li, QZ (2006) Electrical analysis of traction substation and technology of comprehensive compensation. Press of Chinese Railway, Beijing
  Application manual of voltages, current, frequency and power quality standards. China Electric Power Press, Beijing
  8. Li, QZ, He, JM, Jie, SF (2011) Analysis and control of power quality of electrified railway. Press of Southwest Jiaotong University, Chengdu
  9. Arai, Koichi (1980) Balancing circuit for single phase load with scalene Scott connected transformer. Res Inf Railw Technol 37: pp. 23-28
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  18. Li, QZ, Guo, L, Shu, ZL (2013) On-line anti-icing technology for catenary of electrified railway. J China Railw Soc 35: pp. 46-51
  19. Guo, JC (2013) Research on power-supply technology applying on shenshuo railway. Electr Drive Locomot 4: pp. 47-50
  
• 刊物主题：Automotive Engineering; Geoengineering, Foundations, Hydraulics; Regional/Spatial Science;
• 出版者：Springer Berlin Heidelberg
• ISSN：2196-0577

文摘

Unlike the traditional traction power supply system which enables the electrified railway traction substation to be connected to power grid in a way of phase rotation, a new generation traction power supply system without phase splits is proposed in this paper. Three key techniques used in this system have been discussed. First, a combined co-phase traction power supply system is applied at traction substations for compensating negative sequence current and eliminating phase splits at exits of substations; design method and procedure for this system are presented. Second, a new bilateral traction power supply technology is proposed to eliminate the phase split at section post and reduce the influence of equalizing current on the power grid. Meanwhile, power factor should be adjusted to ensure a proper voltage level of the traction network. Third, a segmental power supply technology of traction network is used to divide the power supply arms into several segments, and the synchronous measurement and control technology is applied to diagnose faults and their locations quickly and accurately. Thus, the fault impact can be limited to a minimum degree. In addition, the economy and reliability of the new generation traction power supply system are analyzed.