A Fuzzy Approach for Evaluation of Reconfiguration Actions After Unwanted Events in the Railway System

Friedrich, Johannes; Restel, Franciszek J.

doi:10.1007/978-3-030-19501-4_19

Cited by 2 publications

(5 citation statements)

References 15 publications

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“…Kansky proposed in the 1960s [20,26]-through using graph theory to describe transport networks-several indicators describing transport networks with two levels of detail. The first one is related to determining parameters or indicators about the whole network, and the others concerning the nodes.…”

Section: Current Indicators For Transportation Network Descriptionmentioning

confidence: 99%

“…The first one is related to determining parameters or indicators about the whole network, and the others concerning the nodes. The main objective of their applicability is that they provide methods to [20]:…”

Section: Current Indicators For Transportation Network Descriptionmentioning

confidence: 99%

“…According to the above, the well-known graph theory parameters describing the transportation networks are as follows [20,26]…”

Section: Current Indicators For Transportation Network Descriptionmentioning

confidence: 99%

“…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:…”

mentioning

confidence: 99%

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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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Section: Current Indicators For Transportation Network Descriptionmentioning

confidence: 99%

Section: Current Indicators For Transportation Network Descriptionmentioning

confidence: 99%

“…According to the above, the well-known graph theory parameters describing the transportation networks are as follows [20,26]…”

Section: Current Indicators For Transportation Network Descriptionmentioning

confidence: 99%

mentioning

confidence: 99%

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Graph Theory Approach to the Vulnerability of Transportation Networks

Guze

2019

Algorithms

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“…This can consequently exacerbate delays and make the railway system unable to regain punctuality. Additionally, the problem of the resilience of the railway system to adverse events and their consequences has been described [9,10].…”

Section: Introductionmentioning

confidence: 99%

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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A Fuzzy Approach for Evaluation of Reconfiguration Actions After Unwanted Events in the Railway System

Cited by 2 publications

References 15 publications

Graph Theory Approach to the Vulnerability of Transportation Networks

Graph Theory Approach to the Vulnerability of Transportation Networks

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

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