Energy Efficiency of Railway Lines

Mlinarić, Tomislav Josip; Ponikvar, Klemen

doi:10.7307/ptt.v23i3.122

Cited by 13 publications

(11 citation statements)

References 1 publication

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“…The optimization of train routes reflects the transportation demands of passengers' arriving at the destinations as soon as possible and the intrinsic motivation of railway transportation enterprises improving the energy efficiency for energy consumption and cost reductions. Mlinarić and Ponikvar [18] pointed out that railway infrastructure, traffic management, and dynamic train movement have an important impact on the energy consumption of train operation. In other study results, the energy-efficient train control and timetabling are regarded as the effective measures to improve the global energy efficiency and reduce the total energy consumption, and the significant effects have been obtained [19].…”

Section: Energy Efficiency Analysis Of High-speed Train Operationmentioning

confidence: 99%

Energy efficiency emergence of high-speed train operation and systematic solutions for energy efficiency improvement

Pan

Meng

2020

SN Appl. Sci.

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Different from the concept of energy consumption, the energy efficiency reflects the efficiency of using energy resource and the service-oriented business philosophy of railway transportation enterprises. The energy efficiency of high-speed train operation is mainly embodied in the operation stage of railway transportation system, but involves a number of factors during the whole life cycle of railway transportation system. Based on the above understanding, the principle of making gradual and orderly progress is followed to broaden our research vision in space and time so that the global energy efficiency of high-speed train operation can be better studied. Firstly, we describe in detail the definition of the operational energy efficiency of high-speed train. Then the energy efficiency model of high-speed train operation is established to reveal the energy efficiency emergence mechanism of high-speed train operation. The simulation is carried out to analyze the complex influence of train light-weighting, control scheme, load ratio, and different inter-station distance on the operational energy efficiency of high-speed train moving through a block section. The proportion of the braking energy consumption of high-speed train with the non-regenerative braking mode is calculated in real time so that the maximum amount of available regenerative braking energy can be known for the better design of the regenerative energy recycling system in the future. This study can help to get the systematic solutions to further improve the operational energy efficiency of all in-service high-speed trains.

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Section: Energy Efficiency Analysis Of High-speed Train Operationmentioning

confidence: 99%

Energy efficiency emergence of high-speed train operation and systematic solutions for energy efficiency improvement

Pan

Meng

2020

SN Appl. Sci.

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“…Railway lines should have optimal construction parameters, which allows reducing energy consumption by trains running on them. This is most important in freight transport, because the energy needed to accelerate a heavy loaded freight train after being released at a point speed limit is much higher than for a much lighter passenger train [9]. The socio-economic situation in various regions of Poland is diversified.…”

Section: Analyzed Railway Linesmentioning

confidence: 99%

Determination of the Influence of Infrastructural and Economic Factors on the Volume of Freight Transport on Railway Lines in Poland

Kamiński

2020

Transport Problems

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This article assesses the effect of factors, such as the number of sidings, the number of station holds, and the occurrence of transit traffic on the volume of freight transport on railway lines in Poland. The volume of freight transport on a railway line was expressed by the operational work done by freight trains running on this line and the transported freight mass by them. Most often the effect of factors affecting on the volume of transport is assessed by a team of experts. In this analysis, calculations of partial correlation coefficients were performed. The calculations showed that there is a clear relationship between the volume of freight transport and the number of sidings on the line and the occurrence of transit traffic. Based on the obtained partial correlation coefficients, weights corresponding to the effects of individual factors on the volume of freight transport were calculated. The use of these weights for further analysis will avoid the subjective expert assessments that have been used in this type of analysis so far.

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“…Currently, CBTC systems apply radio devices to provide continuous and high-speed data communications such as monitoring train speeds and track conditions between train and tracksides. Since the CBTC systems can measure train speeds, the optimal design of CBTC ATO speed profiles that minimizes the energy consumption for a target running time, were studied [8,9]. From our above brief introduction, we know that both the TBTC system and CBTC system have complex hardware architectures.…”

Section: Introductionmentioning

confidence: 99%

Motion Control System of Unmanned Railcars Based on Image Recognition

Tseng

Hung

Pan

et al. 2019

ASI

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The main purpose of this paper is to construct an autopilot system for unmanned railcars based on computer vision technology in a fixed luminous environment. Four graphic predefined signs of different colors and shapes serve as motion commands of acceleration, deceleration, reverse and stop for the motion control system of railcars based on image recognition. The predefined signs’ strong classifiers were trained based on Haar-like feature training and AdaBoosting from Open Source Computer Vision Library (OpenCV). Comprehensive system integrations such as hardware, device drives, protocols, an application program in Python and man machine interface have been properly done. The objectives of this research include: (1) Verifying the feasibility of graphic predefined signs serving as commands of a motion control system of railcars with computer vision through experiments; (2) Providing reliable solutions for motion control of unmanned railcars, based on image recognition at affordable cost. The experiment results successfully verify the proposed methodology and integrated system. In the main program, every predefined sign must be detected at least three times in consecutive images within 0.2 s before the system confirms the detection. This digital filter like feature can filter out false detections and make the correct rate of detections close to 100%. After detecting a predefined sign, it was observed that the system could generate new motion commands to drive the railcars within 0.3 s. Therefore, both real time performance and the precision of the system are good. Since the sensing and control devices of the proposed system consist of computer, camera and predefined signs only, both the implementation and maintenance costs are very low. In addition, the proposed system is immune to electromagnetic interference, so it is ideal to merge into popular radio Communication Based Train Control (CBTC) systems in railways to improve the safety of operations.

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Energy Efficiency of Railway Lines

Abstract: ABSTRACT

Cited by 13 publications

References 1 publication

Energy efficiency emergence of high-speed train operation and systematic solutions for energy efficiency improvement

Energy efficiency emergence of high-speed train operation and systematic solutions for energy efficiency improvement

Determination of the Influence of Infrastructural and Economic Factors on the Volume of Freight Transport on Railway Lines in Poland

Motion Control System of Unmanned Railcars Based on Image Recognition

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