Abstract
The pantograph arcing phenomenon may shorten the service life of a pantograph and even destroy onboard devices and instruments, due to the irregular motions of the train and the intermittent line–pantograph disconnection. This paper points out that abrupt inductive energy from the magnetizing inductance of the traction transformer can lead to an electromagnetic transient process with unexpected overvoltage across it. Further, a supercapacitor-based power electronic system is proposed, which can not only redirect the inductive energy to the supercapacitor pack through bidirectional converters but also mitigate the overvoltage across the main electrical equipment when pantograph arcing occurs. Simulation results show the overvoltage could be reduced and the energy stored in the supercapacitor which could also be used to provide energy for sensors or other devices.
Highlights
In recent years, the high-speed railway (HSR) has been fully developed in most countries because of many unique advantages such as high speed, large transportation volume, high efficiency, and low pollution
One tough issue is that pantograph arcing could affect the performance of the catenary system, shortening the service life of the pantograph, damaging devices on the train, and even paralyzing the regional power system [2,3] since there will be high voltage difference and current surge
The present research around pantograph arcing has been focused on the analysis of the dynamic characteristic and the model of the arcing [6,7,8]
Summary
The high-speed railway (HSR) has been fully developed in most countries because of many unique advantages such as high speed, large transportation volume, high efficiency, and low pollution. Considering the influence of the pantograph/catenary detachment process on the train system, an system, an effectiveblack-box extendedmodel black-box model of pantograph arcing isinproposed in [9] by introducing effective extended of pantograph arcing is proposed [9] by introducing a dynamic apantograph dynamic pantograph and the overhead line detachment trajectory model. [24] can overvoltage caused by caused by pantograph arcing by aparalleling a capacitance in the high-voltage side of transformer, the traction pantograph arcing by paralleling capacitance in the high-voltage side of the traction transformer, it fails to provide detailed design of such ain capacitance in practice Different but it fails to but provide detailed design of such a capacitance practice. An energy system was built by multiple energy balancing subsystems subsystems could bear the high which couldwhich bear the high voltage and voltage current.and current
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
