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A Monovoltage Equivalent Model of Bi-Voltage Autotransformer-Based Electrical Systems in Railways
KTH, School of Electrical Engineering (EES), Electric Power Systems.ORCID iD: 0000-0003-2109-060X
2012 (English)In: IEEE Transactions on Power Delivery, ISSN 0885-8977, E-ISSN 0885-8877, Vol. 27, no 2, 699-708 p.Article in journal (Refereed) Published
Abstract [en]

This paper presents an equivalent model that allows representing bi-voltage autotransformer- based systems (such as 2 x 25 kV ac, 2 x 15 kV ac) as if they were monovoltage systems. This model can be used for symmetrical (such as 2 x25-kV 50-Hz systems) and unsymmetrical (such as 12/24-kV 25-Hz systems) configurations. It is based on two simplifying hypotheses that establish relationships between currents and voltages in the positive and negative phases. These hypotheses are discussed and the accuracy of the model is evaluated by comparing the results with a detailed conventional model of power-supply systems.

Place, publisher, year, edition, pages
2012. Vol. 27, no 2, 699-708 p.
Keyword [en]
Power system modeling, rail transportation power system
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
URN: urn:nbn:se:kth:diva-95114DOI: 10.1109/TPWRD.2011.2179814ISI: 000302503900031ScopusID: 2-s2.0-84859759310OAI: diva2:526839
QC 20120515Available from: 2012-05-15 Created: 2012-05-14 Last updated: 2012-05-15Bibliographically approved

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