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Characteristic analysis of the VCB operational overvoltage for high-speed trains considering arc reignition phenomenon

Author

Listed:
  • Song Xiao
  • Hao Hou
  • Yaoyao Jin
  • Guoqiang Gao
  • Yujun Guo
  • Jie Zhou
  • Changlei Ju
  • Yixiang Shen
  • Jie Liu
  • Siyan Chen
  • Guangning Wu

Abstract

Due to the constant pursuit for higher operating velocity, the traction power capacity for high-speed trains needs to be enlarged. When the train passes approach the insulating sections set between the two neighbouring contact lines carrying the traction current with different phases, the vehicle-mounted vacuumed circuit breaker (VCB) needs to be switched off. Generally, the arc may generate when connecting or separating the contacts, when switching on or off the VCB. In order to investigate the characteristics of the reignition overvoltage the ‘train-rail-catenary’ traction power supply model considering the reignition process between the VCB’s contacts is launched in this paper. The impact of the dielectric strength recovery rate between the contacts of the VCB on the number of reignition and the amplitude of the reignition overvoltage is analysed based on the experimental and simulation results. Ultimately, the corresponding restraining measures are proposed for suppressing the reignition overvoltage.

Suggested Citation

  • Song Xiao & Hao Hou & Yaoyao Jin & Guoqiang Gao & Yujun Guo & Jie Zhou & Changlei Ju & Yixiang Shen & Jie Liu & Siyan Chen & Guangning Wu, 2023. "Characteristic analysis of the VCB operational overvoltage for high-speed trains considering arc reignition phenomenon," International Journal of Rail Transportation, Taylor & Francis Journals, vol. 11(5), pages 790-810, September.
    • Handle: RePEc:taf:tjrtxx:v:11:y:2023:i:5:p:790-810
    DOI: 10.1080/23248378.2022.2105268
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