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, Toletti, Ambra, De Martinis, Valerio, Weidmann, Ulrich, 2015 >>
Autor(en): Toletti, Ambra, De Martinis, Valerio, Weidmann, Ulrich
Titel: What about Train Length and Energy Efficiency of Freight Trains in Rescheduling Models
Kurzbeschreibung: Energy efficiency and train length may be critical during rescheduling, in particular if long freight trains are considered. The first aim of this paper is to investigate how current scheduling and rescheduling models consider train length and energy efficiency. The second aim is to extend a scheduling model that considers train length and energy efficiency for drafting a rescheduling model that minimizes not only delays but also energy consumption. A small numerical example shows that this rescheduling procedure can be fast and yield to a significant reduction of energy consumption. Thus, it is worth further research. However, validation on larger instances, calibration of parameters with real operational data, and methods to speed up the procedure are still needed.2
Publiziert in: Transportation Research Procedia
Band: 10
Seiten: 584 - 594
ISSN: 2352-1465
Publikationsdatum / Empfangsdatum: 2015-01-01
Publikations-Status: Amsterdam
Publikations-Status: Published
Einordnungen: Energy efficiency, Freight train, Rail operation, Rescheduling, Train length
Eventname: 18th Euro Working Group on Transportation (EWGT 2015)
Eventdatum: July 14-16, 2015
Ort: Delft, The Netherlands
Sprache: English
Schlüsselwort: Energy efficiency, Freight train, Rail operation, Rescheduling, Train length
DBID Quelle: FORM-1443800583
DOI: 10.1016/j.trpro.2015.09.012
Nebis System Nummer: 010514383
, De Martinis, Valerio, Weidmann, Ulrich, Gallo, Mauro, 2014 >>
Autor(en): De Martinis, Valerio, Weidmann, Ulrich, Gallo, Mauro
Titel: Towards a simulation-based framework for evaluating energy-efficient solutions in train operation
Kurzbeschreibung: In this paper we propose a simulation-based framework for evaluating energyefficient solutions in train operation. The general framework is composed of an optimisation system able to generate energy-efficient station-to-station speed profiles, looped with a micro-simulation tool for simulating railway traffic conditions, in order to evaluate the impacts on railway systems (delays, conflicts) and energy savings. The optimisation system is a subroutine consisting of a Genetic Algorithm for optimal speed profile parameters optimisation, a speed profile generator, and an energy consumption model. The micro simulation tool allows the evaluation of the impact of energy efficient speed profiles on rail operation. The framework operates on a database composed of 4 subsets: timetable, rolling stock characteristics, signalling system, infrastructure features; the first subset can be considered as the result of scheduling or rescheduling procedures, while the others can be assumed to be fixed. The proposed framework has been applied on a real-scale case of an Italian suburban railway system.
Buchtitel: Computers in railways XIV : railway engineering design and optimization ; Fourteenth International Conference on Railway Engineering Design and Optimization, COMPRAIL XIV ; Rome, 2014
Seiten: 721 - 732
ISBN: 978-1-84564-766-7, 978-1-84564-767-4
Publikationsdatum / Empfangsdatum: 2014-01-01
Publikations-Status: WIT Press
Publikations-Status: Published
Eventname: 14th International Conference on Railway Engineering Design and Optimization (COMPRAIL 2014)
Eventdatum: June 25, 2014
Ort: Rome, Italy
Sprache: English
DBID Quelle: FORM-1407773530
DOI: 10.2495/CR140601
, De Martinis, Valerio, Weidmann, Ulrich, 2014 >>
Autor(en): De Martinis, Valerio, Weidmann, Ulrich
Titel: The evaluation of energy efficient solutions in train operation
Untertitel: A simulation-based approach
Kurzbeschreibung: In this paper we draft the lines of a simulation-based framework for evaluating energy-efficient solutions in train operation. The general framework is composed by an optimisation model able to generate energy-efficient station-to-station speed profiles, looped with a micro-simulation tool for simulating railway traffic conditions, in order to evaluate the impacts on railway systems in terms of differences between planned and estimated services and related energy consumption. The optimisation model is a subroutine composed by a genetic algorithm for generating optimal speed profile parameters, a speed profile generator, and an energy consumption evaluation tool. The framework operates on a database composed by 4 subsets: timetable, rolling stock characteristics, signalling system, infrastructure characteristics. A numerical example on a real scale case is proposed, specifically a part of a suburban line that operates in the Canton of Zurich.
Publikationsdatum / Empfangsdatum: 2014-01-01
Publikations-Status: Ascona
Publikations-Status: Published
Einordnungen: Energy saving, Simulation, Railway
Eventname: 14th Swiss Transport Research Conference (STRC 2014)
Eventdatum: May 14-16, 2014
Ort: Ascona, Switzerland
Sprache: English
Schlüsselwort: Energy saving, Simulation, Railway
DBID Quelle: FORM-1400077024

 

 

 

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