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Abstract
The paper presents a preliminary technical-economic comparison between a 3 kV DC railway and the use of trains with on-board storage systems. Numerical simulations have been carried out on a real railway line, which presents an electrified section at 3 kV DC and a non-electrified section, currently covered by diesel-powered trains. Different types of ESS have been analyzed, implementing the models in Matlab/Simulink environment. A preparatory economic investigation has been carried out.
Highlights
The International Energy Agency and the International Union of Railways have stated that the23.1% of worldwide CO2 emissions from fuel combustion are attributable to the transport sector (8258 million tons of CO2 )
This paper presents the evaluation taken into consideration to perform a comparison between direct current electrification and the use of trains with on-board energy storage systems
Contrariwise, the use of trains equipped with high autonomy on-board energy storage systems (ESS) allows to minimize the capital costs since it involves the recharge of the battery and supercapacitor pack in the electrified section of the line
Summary
The International Energy Agency and the International Union of Railways have stated that the. Shifting from road freight transport to electrified railways is a possible solution, several studies indicate that the potential for this is limited New technologies such as electrified highways (eHighways) are proposed, in which an overhead line supply energy to trucks provided with an integrated pantograph. Trains with on-board storage systems could be adopted for expansion of already electrified railways, point-to-point connections or commuter transport systems [17,18,19] It will be important in the near future to considerate the need for prospective analysis of the marketing of rolling stock approved for bimodal operation (i.e., with and without contact lines supplying different voltages). The roof-mounted traction batteries powered regional train, proposing it as a solution for non-electrified railway lines. This paper presents the evaluation taken into consideration to perform a comparison between direct current electrification and the use of trains with on-board energy storage systems.
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