Influence of railway line characteristics in inductive interference on railway track circuits

Lucca, Giovanni

doi:10.1049/iet-smt.2018.5021

Cited by 13 publications

(6 citation statements)

References 11 publications

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“…Thus, when an abnormal return current appears (such as that caused by breakage of one earth conductor or bonding conductor) this can lead to loss of balance and performance of the return circuit, causing in turn increased induction, interference in wayside cables and possible diminishment in tuning and in performance of track circuits [ 45 , 46 , 47 , 48 , 49 , 50 , 51 ].…”

Section: Methods and Functional Scheme Of The Fault Location System From Power Supply System Of Railway Infrastructurementioning

confidence: 99%

Innovative Integrated Solution for Monitoring and Protection of Power Supply System from Railway Infrastructure

Andruşcă

Adam

Dragomir

et al. 2021

Sensors

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This paper describes an innovative integrated solution for monitoring and protection of the power supply system of electric traction. The development of electronics devices, new possibilities to communicate (wireless), and new sensors makes it possible to design, develop and implement new hardware–software structures in various fields such as energy systems, transportation infrastructure, etc. This contributes to increasing developments in the monitoring and protection of railway infrastructure. A monitoring and protection system that uses sensors and devices to acquire electrical parameters from railway infrastructure has been developed and applied for fault detection and protection of power supply systems from electric traction. The solution of monitoring and protection presented are composed of a hardware–software structure with Global System for Mobile Communications (GSM) communication for monitoring of power supply installations from the electric traction and a central remote system composed of a device with GSM communication and a server that will allow, among others things, accurate detection of the block section (SC), in which an electrical fault (short circuit) has occurred, determination of the circuit breakers electro-erosion from the railway installations and an indication of the opportune moment for maintenance activity, respectively, as well as knowledge of the technical condition of some equipment from the return circuit. The proposed and developed method for monitoring devices has been validated in the railway laboratory to confirm its capability to detect defects and was tested in the field. Experimental results in the field and appropriate data analysis are included in this article.

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Section: Methods and Functional Scheme Of The Fault Location System From Power Supply System Of Railway Infrastructurementioning

confidence: 99%

Innovative Integrated Solution for Monitoring and Protection of Power Supply System from Railway Infrastructure

Andruşcă

Adam

Dragomir

et al. 2021

Sensors

View full text Add to dashboard Cite

show abstract

“…The algorithm we present here is largely based on the one described in [1] which consists essentially in the discretization of the multi-conductor transmission line equations (1); we generalize them by assuming that the pul square matrix [z] is not constant but, on the contrary, one or more, among its diagonal elements, have non-linear characteristics and depend on the current. The next paragraph is devoted to the description of the multi-conductor algorithm core; for reasons of brevity, this description shall be concise while, for detailed information, one should refer to [1] or more shortly in [10].…”

Section: Generalmentioning

confidence: 99%

Multi-conductor transmission line with nonlinear impedances: Application to 50Hz studies

Lucca

2022

Serb J Electr Eng

Self Cite

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This paper presents an algorithm for the evaluation of currents and voltages along a multi-conductor transmission line having non-linear impedances due to the presence of ferromagnetic conductors; we assume that these impedances are function of the current carried by the relevant conductor so that the equivalent circuit modelling the line is non-linear and has to be solved by means of an iterative procedure. The present paper can be considered as a generalization of our previous works successfully applied to single-conductor lines with earth return. Some examples of application to typical 50-60 Hz interference studies between power/railway lines on telecommunication cables and pipelines are shown.

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“…As a traditional and inherent problem of railway signals, adjacent line interference has always attracted the attention of domestic and foreign researchers. Lucca [3] et al studied the influence of inductive interference caused by the electrified double track on the track circuit, and proposed an algorithm for sensitivity analysis of the electromagnetic interference level generated; E. M. Tarasov [4] et al proposed a method to determine the parameter matrix coefficients of railway multiple lines and analyzed the adjacent line interference between asymmetrical track circuits; Manakov AD [5] et al proposed a method to determine the interference current of the double-track circuit; Cuiqin Zhao [6] et al established a multi-line parallel ballasted track coupling interference equivalent circuit model; Yuequan Li [7] et al studied the coupling interference at the transverse connecting line at the entrance of electrified railway; Jialiang Liu [8] and others realized the numerical calculation of interference current in the adjacent segment. Most of the above-mentioned research is based on general-speed railways, while high-speed railways have different configurations.…”

Section: Introductionmentioning

confidence: 99%

Simulation on adjacent line mutual interference of high-speed railway track circuit

2022

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As the density of the high-speed railway network continues to increase, the problem of electromagnetic interference on adjacent lines has become increasingly prominent. This paper focuses on the electromagnetic interference of adjacent lines caused by rail and line in the signal transmission process of the high-speed rail track circuit. Firstly, complete the establishment of the four-terminal network model of the ZPW-2000A track circuit system and the cab signal entry current crosstalk model, calculation of interference voltage under different parallel length of signal frequency. Then the interference factors and coupling mechanism of adjacent lines are analysed to realize calculation of interference amount. Finally, according to the sensitivity index of the cab signal, the maximum parallel length of adjacent sections is given respect, and the interference protection suggestions of adjacent lines are put forward. The research work of this paper provides a theoretical basis for suppressing the interference of adjacent lines and guarantees the safe and efficient operation of high-speed trains.

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Influence of railway line characteristics in inductive interference on railway track circuits

Cited by 13 publications

References 11 publications

Innovative Integrated Solution for Monitoring and Protection of Power Supply System from Railway Infrastructure

Innovative Integrated Solution for Monitoring and Protection of Power Supply System from Railway Infrastructure

Multi-conductor transmission line with nonlinear impedances: Application to 50Hz studies

Simulation on adjacent line mutual interference of high-speed railway track circuit

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