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Pantograph Arcing in Electrified Railways—Mechanism and Influence of Various Parameters—Part I: With DC Traction Power Supply
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
2009 (English)In: IEEE Transactions on Power Delivery, ISSN 0885-8977, E-ISSN 1937-4208, Vol. 24, no Copyright 2009, The Institution of Engineering and Technology, 1931-9 p.Article in journal (Refereed) Published
Abstract [en]

Pantograph arcing is a common phenomenon in electrified railway systems. This is also a source of broadband-conducted and radiated electromagnetic interference (EMI) for vehicle as well as traction power and signaling systems. In this paper and the companion paper, experimental analyses of pantograph arcing phenomena are presented for dc and ac feeding systems, respectively. Influences of different parameters on dc traction system, such as supply-voltage polarity, relative motion between pantograph and overhead contact wire, namely, forward motion along the track (longitudinal), and lateral sliding motion of the pantograph (zigzag) are presented here. From the voltage and current waveforms of the test runs, it is shown that pantograph arcing is a polarity-dependent phenomenon. For the positive-fed overhead traction system, where pantograph is cathode, the supply interruptions due to zigzag motion are comparatively less compared to negatively fed traction systems. As a result, the transients, due to pantograph arcing, are more frequent in negatively fed traction systems. It is found that the arc root movement along the electrode surfaces (pantograph-contact wire) is governed by the relative motion and polarity of the electrodes. The analyses presented in this paper also form a foundation to understand the pantograph arcing process and the corresponding influential parameters with the ac supply presented in the companion paper. The findings presented in this paper could be beneficial for coming up with appropriate mitigation techniques from the EMI due to pantograph arcing in dc-fed traction systems.

Place, publisher, year, edition, pages
USA: IEEE , 2009. Vol. 24, no Copyright 2009, The Institution of Engineering and Technology, 1931-9 p.
Keyword [en]
arcs (electric), electromagnetic interference, pantographs, railway electrification, traction power supplies
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:uu:diva-139770DOI: 10.1109/TPWRD.2009.2021035OAI: oai:DiVA.org:uu-139770DiVA: diva2:382013
Note

10880716 electrified railway system dc traction power supply broadband-conducted interference electromagnetic interference pantograph arcing phenomena ac feeding system dc feeding system dc traction system supply-voltage polarity pantograph lateral sliding motion polarity-dependent phenomenon positive-fed overhead traction system supply interruption negatively fed overhead traction system arc root movement electrode

Available from: 2010-12-29 Created: 2010-12-29 Last updated: 2017-12-11

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Midya, SurajitThottappillil, Rajeev

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