Method for Railway Timetable Evaluation in Terms of Random Infrastructure Load

Haładyn, Szymon; Restel, Franciszek J.; Wolniewicz, Łukasz

doi:10.1007/978-3-030-19501-4_23

Cited by 3 publications

(5 citation statements)

References 16 publications

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“…The traction characteristics of the locomotive are illustrated in Figure 3e. (d) EP09 locomotive [6]; (e) EU44 locomotive 'Siemens EuroSprinter' [59]; (f) Electric multiple unit ED250 'Pendolino' [6].…”

Section: The Rolling Stockmentioning

confidence: 99%

“…In the case of the 3 kV DC power supply system used on the Polish railway network, such an increase in energy consumption by trains and the installation of additional equipment onboard railway vehicles may lead to overloading the power supply infrastructure [6]. The relatively low voltages (in comparison to the 15 kV AC and 25 kV AC supply systems) and the accumulation of higher-powered units mean very high current values [7].…”

Section: Introductionmentioning

confidence: 99%

“…More and more often, it is necessary to take into account not only the capacity of railway lines but also the permissible load of the power supply network when designing the timetable. The passage of units with high installed capacity disrupts traffic, especially in conurbations, or significantly reduces the capacity of railway lines [6]. In the absence of plans to change the railway supply system, it is reasonable to check the extent to which the supply network generates critical points, which must be taken into account in the process of scheduling the use of the railway system.…”

Section: Introductionmentioning

confidence: 99%

“…Traction characteristics of trains. Tractive effort (F(v) or Z(v)), power P(v), and electric current consumption I(A): (a) Electric multiple unit 31WE "Newag Impuls"; (b) electric multiple unit EN57 (simplified) (c) EU07 locomotive [61];(d) EP09 locomotive[6]; (e) EU44 locomotive 'Siemens EuroSprinter'[59]; (f) Electric multiple unit ED250 'Pendolino'[6].…”

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confidence: 99%

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The Problem of Train Scheduling in the Context of the Load on the Power Supply Infrastructure. A Case Study

Haładyn

2021

Energies

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This article deals with the new challenges facing modernising railways in Poland. We look at the problem of the efficiency of the power supply system (3 kV DC) used in the context of the increasing use of electric vehicles, which have a higher demand for electricity than the old type. We present and characterise the power supply system in use, pointing out its weaknesses. We consider a case study. The load of the power supply network generated by the rolling stock used in Poland was examined using a microsimulation. A real train timetable was taken into account on a fragment of one of the most important railway line sections in one of the urban agglomerations. Then the results were compared with the results of a microsimulation in which old units were replaced by new trains. These tests were carried out in several variants. We found critical points in the scheduling of railway system use. Our results indicate that it is becoming increasingly necessary to take into account the permissible load capacity of the supply network in certain traffic situations in the process of timetable construction.

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Section: The Rolling Stockmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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confidence: 99%

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The Problem of Train Scheduling in the Context of the Load on the Power Supply Infrastructure. A Case Study

Haładyn

2021

Energies

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“…According to the above, one of the most important things in transportation networks' analysis is the finding of the bottlenecks. They impose delays and restrictions in the normal flow of transportation [18][19][20][21][22]. There are three major types of bottlenecks:…”

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Graph Theory Approach to the Vulnerability of Transportation Networks

Guze

2019

Algorithms

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Nowadays, transport is the basis for the functioning of national, continental, and global economies. Thus, many governments recognize it as a critical element in ensuring the daily existence of societies in their countries. Those responsible for the proper operation of the transport sector must have the right tools to model, analyze, and optimize its elements. One of the most critical problems is the need to prevent bottlenecks in transport networks. Thus, the main aim of the article was to define the parameters characterizing the transportation network vulnerability and select algorithms to support their search. The parameters proposed are based on characteristics related to domination in graph theory. The domination, edge-domination concepts, and related topics, such as bondage-connected and weighted bondage-connected numbers, were applied as the tools for searching and identifying the bottlenecks in transportation networks. Furthermore, the algorithms for finding the minimal dominating set and minimal (maximal) weighted dominating sets are proposed. This way, the exemplary academic transportation network was analyzed in two cases: stationary and dynamic. Some conclusions are presented. The main one is the fact that the methods given in this article are universal and applicable to both small and large-scale networks. Moreover, the approach can support the dynamic analysis of bottlenecks in transport networks.

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The Analysis of Selected Factors Improving the Cargo Susceptibility to Modal Shift

Zając

2022

Energies

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The issue of shifting loads from road to rail is always vivid when it comes to reducing CO2 emissions from transport. Practically not every load transported by road vehicles over a long distance can be transferred to rail. Additionally, the potential of the railway lines is limited, which means that the network is not able to accept huge amounts of loads from road transport. In the article, attention was paid to the typology of cargo susceptible to changing the means of transport. The article discusses the factors influencing the real possibility of CO2 reduction by changing the mode of transport. The analysis and calculation example of the selected region in Poland is presented.

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Method for Railway Timetable Evaluation in Terms of Random Infrastructure Load

Cited by 3 publications

References 16 publications

The Problem of Train Scheduling in the Context of the Load on the Power Supply Infrastructure. A Case Study

The Problem of Train Scheduling in the Context of the Load on the Power Supply Infrastructure. A Case Study

Graph Theory Approach to the Vulnerability of Transportation Networks

The Analysis of Selected Factors Improving the Cargo Susceptibility to Modal Shift

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