Detrimental effect of stray current on rails and fastening systems in urban railway tracks

Vranešić, Katarina; Lakušić, Stjepan; Serdar, Marijana; Alar, Vesna

doi:10.1016/j.conbuildmat.2023.132645

Cited by 5 publications

(2 citation statements)

References 38 publications

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“…However, the resistive network model can only be calculated based on the equivalent of the set resistance value, which makes it difficult to accurately reflect the diffusion distribution of stray current around the line. The advantage of the finite element method, on the other hand, lies in the modeling of complex three-dimensional diffusion scenarios [7,[15][16][17] of stray currents or the calculation of dynamic processes in complex structures to accurately simulate real physical systems. When using finite element for the dynamic simulation of stray current, each simulation moment needs to manually modify the size and location of the equivalent current source of the train, and then carry out the repetitive dissections of the whole model, which leads to a greatly extended time for the dynamic simulation of the stray current distribution.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Stray Current Leakage in Subway Traction Power Supply System Based on Field-Circuit Coupling

Lin,

Tang,

Chen

et al. 2024

Energies

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In a rail transit system, there is a constant leakage of current from the subway rails to the earth, and these stray currents have complex propagation paths and a wide range of influence. Since no stray current collection devices are installed at subway depots, some of the stray current leaking from the mainline will converge at the depot, seriously corroding the structural reinforcement and buried metal of the station, thereby jeopardizing the normal operation of subway trains and passenger safety. In this paper, a field-circuit coupling method is proposed to analyze the current leakage and distribution law of the subway mainline and depot. It is found that the failure of the gauge block at the mainline will trigger the maximum leakage of rail current. Additionally, it is observed that the stray current distribution at the depot is mainly influenced by the operating status of the one-way conduction device (OWCD) and the change of rail potential. These results validate the applicability and effectiveness of the field-circuit coupling method proposed in this paper and provide new technical support for the study of stray current leakage distribution in subways.

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Section: Introductionmentioning

confidence: 99%

Analysis of Stray Current Leakage in Subway Traction Power Supply System Based on Field-Circuit Coupling

Lin,

Tang,

Chen

et al. 2024

Energies

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“…The effects of stray current on rail and fastening system components are discussed in [28,29], where several rail samples fastened to a concrete base using different types of fastening systems were immersed in water (simulating inadequate track drainage) and subjected to DC current flow. It was concluded that stray current causes localized damage to the rail foot and fastening system components, particularly the clips.…”

Section: Introductionmentioning

confidence: 99%

Measures and Prescriptions to Reduce Stray Current in the Design of New Track Corridors

Vranešić,

Bhagat,

Mariscotti

et al. 2023

Energies

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Stray currents can cause very rapid degradation and material loss at the points where the current leaves the metal and enters the electrolyte. Nowadays, many resources are invested in the protection of jeopardized structures, such as buried pipelines, from stray current corrosion. This paper describes the measures that need to be considered in the design and construction of track structures to ensure high rail-to-ground resistance and consequently reduce stray currents. The main conclusions from existing guidelines and standards for reducing and controlling stray currents that are applied by various track operators are presented in the paper. Rail-to-ground resistance in different types of tracks structures and rail fastening systems is analyzed, and the optimal type of the track and type of the fastening system is defined. The grounding schemes used on the tracks and their influence on stray current values are described, as well as the influence of traction power stations (TPS) and rail cross bonding on stray current. Since it is not necessary to apply all the measures described to the same track structure, the paper gives recommendations on which measures to apply when building tracks with continuously fastened rails and which to apply when building tracks with discretely supported and fastened rails.

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Intelligent detection of loose fasteners in railway tracks using distributed acoustic sensing and machine learning

Han,

Wang,

Madan

et al. 2024

Engineering Applications of Artificial Intelligence

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Detrimental effect of stray current on rails and fastening systems in urban railway tracks

Cited by 5 publications

References 38 publications

Analysis of Stray Current Leakage in Subway Traction Power Supply System Based on Field-Circuit Coupling

Analysis of Stray Current Leakage in Subway Traction Power Supply System Based on Field-Circuit Coupling

Measures and Prescriptions to Reduce Stray Current in the Design of New Track Corridors

Intelligent detection of loose fasteners in railway tracks using distributed acoustic sensing and machine learning

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