EMC disturbances on track circuits in the 2&amp;#x00D7;25kV high speed AC railways systems

Dolara, Alberto; Gualdoni, M.; Leva, Sonia

doi:10.1109/ptc.2011.6019206

Cited by 13 publications

(7 citation statements)

References 10 publications

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“…Assessments of rolling stock distortions are carried out for several reasons: traditionally, compliance to limits of emission to prevent interference to signalling [29,30], and in general, excessive induction [31,32]; more recently, attention has been placed on power quality with respect to the rest of the network [33], to resonance triggering and consequential overvoltages [28,34,35]. Finally, distortion has implications for power and energy consumption [36][37][38]; this is gathering more attention, i.e., in order to improve the energy efficiency of electrified transportation systems [39] in a sustainability perspective.…”

Section: Ac Railway System and Electrical Quantitiesmentioning

confidence: 99%

Non-Intrusive Load Monitoring Applied to AC Railways

Mariscotti

2022

Energies

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Non-intrusive load monitoring takes place in residential and industrial contexts to disaggregate and identify loads connected to a distribution grid. This work studies the applicability and effectiveness for AC railways, considering the highly dynamic behavior of rolling stock as an electric load, immersed in varying contexts of moving loads. Both voltage–current diagrams and harmonic spectra were considered for identification and extraction of features relevant to classification and clustering. Principal components were extracted, approaching the problem using principal component analysis (PCA) and partial least square regression (PLSR). Clustering methods were then discussed, verifying separability performance and applicability to the railway context, checking the performance by means of the balanced accuracy index. Based on more than one hundred measured spectra, PLSR has been confirmed with superior performance and lower complexity. Independent verification based on dispersion and correlation were used to spot relevant spectrum components to use as clustering features and confirm the PLSR outcome.

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Section: Ac Railway System and Electrical Quantitiesmentioning

confidence: 99%

Non-Intrusive Load Monitoring Applied to AC Railways

Mariscotti

2022

Energies

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“…The impedance matrix [ ] is given below: The coefficients ii is the impedance of the line "i" and per unit length and the coefficients ij and to the ground which represent the mutual impedance between the "i", "j" lines related to the ground [5]. Current and Voltage vectors are given below:…”

Section: Front View Of the Railway Trackmentioning

confidence: 99%

The electromagnetic interferance caused by high voltage power lines along the electrical railway equipment

Hajji

Mahmoudi

Labbadi

2020

IJECE

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The identification of risks linked to electromagnetic compatibility (EMC) in the electric railway is a major concern in identifying EMC problems and analyzing the unintentional various external disturbing sources as well as the probability of occurrence of interference, the level of interference along the railway system. The purpose of this analysis is to determine the electromagnetic interaction coupling generated by the high voltage (HV) lines located along the railway line by analyzing the voltage induced in the signaling transmission cables such as the European rail traffic management system/European train control system (ERTMS/ETCS) through the multi-conductor transmission line (MTL) theory which may have an impact on the transmitting information. Dubanton method and approximate calculation will be applied and simulated through COMSOL Multiphysics tool in order to analyze if the protection distance and coupling conditions are respected by the railway standards.

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“…Rolling stock harmonic emissions are assessed and analysed for a variety of purposes: first of all prevention of interference to signalling, directly conducted or by induction [11,12], and more recently for assessment of power and energy consumption [3][4][5]13] [14], all carried out in a single-train perspective. Thus information on network and its quantities is limited to what can be measured at the line-pantograph interface.…”

Section: Introductionmentioning

confidence: 99%

Experimental characterisation of active and non‐active harmonic power flow of AC rolling stock and interaction with the supply network

Mariscotti

2021

IET Electrical Syst in Trans

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In AC electrified railways, there is a significant exchange of power at fundamental and harmonics in quite dynamic conditions. Harmonic patterns of AC rolling stock and railway networks are analysed in terms of active and non‐active power flow, relating it to the characteristic of the network and to operating conditions, synthesised in the fundamental current intensity and speed. Herein, it is shown that correlation and clustering can separate distortion terms of internal and external origin also without a priori information. The use of harmonic power terms (product of voltage and current components) shows improved robustness with respect to the analysis of the voltage and current components alone.

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EMC disturbances on track circuits in the 2×25kV high speed AC railways systems

Cited by 13 publications

References 10 publications

Non-Intrusive Load Monitoring Applied to AC Railways

Non-Intrusive Load Monitoring Applied to AC Railways

The electromagnetic interferance caused by high voltage power lines along the electrical railway equipment

Experimental characterisation of active and non‐active harmonic power flow of AC rolling stock and interaction with the supply network

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