Research on Novel Uninterruptible Flexible Connector Device for Phase Separation in Electrified Railways

Abstract:

Loss and recovery of power supply to electrified locomotives when passing neutral section will caused over voltage and over current in locomotives, which greatly threatens the safety of electrified railways and passengers. A novel uninterruptible flexible connector device is proposed, which comprises of two breakers, back-to-back converters and two transformers. This device can realize flexible switch between voltages of two traction feeders using phase shift technology at variable frequency and make locomotives run pass neutral section at rated power. System configuration, working principle, system-level and device-level control of uninterruptible flexible connector device are introduced and their correctness and effectiveness are validated through simulation.

• Periodical: Advanced Materials Research (Volumes 616-618)
• Pages: 580-585
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.616-618.580
• Online since: December 2012
• Authors: Xu Tian, Ying Dong Wei, Qi Rong Jiang
• Keywords: Back-to-Back Converter, Phase Shift at Variable Frequency, Two Closed-Loop Control, Uninterruptible Flexible Connector

References

[1] Wenji Luo and Bing Xie, Study and Application of the Technology of Ground Auto-phase-break-system for Electrified Railway[In Chinese], Railway Locomotive & Car, 2008(28),pp.27-33

[2] Mingguang Liu, Yan'an Lu, Hongwei Wei, Xunhui Zhu, Zhongqiu Kong, Liangtian Zhao, etc. Study on Articulated Neutral Section Over-voltage Test[In Chinese], Railway quality control, 2007(04),pp.15-17.

[3] ZongZhi Li, Analysis of Causes of Tripping during Electric Locomotive's Passage of Neutral Section and Study of its Prevention Measures[In Chinese], Electric Railway,2008(04),pp.10-12

[4] Dali Feng, Impact analysis on train equipment by automatic passing pahse seperation in Zhengzhou-Xian Railway[In Chinese], Railway Technical Innovation, 2011(01), 97-98

[5] Xiaojuan Wei, Hongtao Wang, Yusheng Wu, Study of Scheme for Ground Automatic Passing over of Articulated Phase Insulator with Parallel Resistance[In Chinese], Electric Railway,2011(01),pp.5-8

[6] Bing Liu, Wang Ran, Xiong Li, QiongLin Zheng, Research on Power Electronic Switch Used in the Auto-Passing Neutral Section With Electric Load[In Chinese], Power Electronics, 2011(03), pp.26-29

DOI: 10.1109/icems.2011.6073775

[7] Zhijie Dong, Study of Technology and Scheme About Ground Automatic Convert[In Chinese], Southeast Jiaotong University, (2004)