Energy saving by using regenerating braking as normal train operation

Goh, S.E.; Griffith, Mike; Larbi, K.

doi:10.1049/ic.2010.0041

Cited by 8 publications

(3 citation statements)

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“…The TPC model covers the movement modelling of each train given in the forecasted or current timetable. The train movement parameters could be determined by (1) according to the Newton's second law of motion.…”

Section: Model Of the Electrified Railway Line (Erl)mentioning

confidence: 99%

“…Meanwhile due to the rolling stock modernization the and replacing programs in perspective of the next years the absolute majority of the rolling stock is going to be equipped with regenerative braking. That condition gives the opportunity of braking power utilization, which in the case of a large number of stops enables to save between 10 % and 30 % of traction energy [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

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Case study of stationary energy storage device in a 3 kV DC traction system

Jefimowski

Nikitenko

2018

MATEC Web of Conferences

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The paper presents the results of economic study of energy storage system (ESS) implemented in 3 kV DC power supply system. Two conceptions of ESS have been investigated: ESS with supercapacitor (SC) and hybrid ESS (HESS) with SC and LFP battery. The investigated locations of energy storage systems are considered among existing traction substations in two railway lines with different density of train operation. The considered aims of energy storage system implementation are decreasing of energy consumption by maximum regenerative energy utilization and reduction of peak 15min power demand of traction substation. The paper presents a method of regenerative power estimation depending on the location of the considered ESS implementation point. Also the method of optimal location selection of ESS in terms of minimization of Simple Payback Time (SPBT) of investment is presented. Besides the influence of initial cost value as well as energy price on the SPBT value are investigated. The results are compared between two railway lines with different number of trains operating.

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Section: Model Of the Electrified Railway Line (Erl)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Case study of stationary energy storage device in a 3 kV DC traction system

Jefimowski

Nikitenko

2018

MATEC Web of Conferences

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“…It is reported that the traction energy used to drive the rail vehicles accounts for the majority of the total energy consumption in rail transport systems [2], [3]. Regenerative braking of the traction electric motors converts the kinetic energy into the electrical energy for reuse and thus improve the energy efficiency.…”

Section: Introductionmentioning

confidence: 99%

Maximise the Regenerative Braking Energy using Linear Programming

Weston

Zhao

2014

17th International IEEE Conference on Intelligent Transportation Systems (ITSC)

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Regenerative braking improves the energy efficiency of railway transportation by converting the kinetic energy into the electrical energy. In this paper, Linear Programming (LP) is applied to search for the train braking trajectory with the maximum Regenerative Braking Energy (RBE). LP takes the advantages of simplicity in modelling, efficiency in computation, flexibility in applications. Compared with the previously proposed model in [1], the proposed LP optimisation model takes into account the speed limit constraints during the braking operation. Four case studies have been performed with different speed limits and initial braking speeds. While the maximum allowed braking time takes a key role for the RBE recovery, a threshold exists when the impact of maximum allowed braking time starts to become negligible. It has been demonstrated in this paper that LP is a robust and effective method to locate the optimal braking trajectory with the maximum RBE. The results of the optimisation are of significant interest for urban transportation systems where the regenerative braking is frequently applied. Future work of this paper is to investigate the optimisation of RBE in a more complicated scenario where the gradients are present and the motoring operation of train is allowed.

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