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Fast estimation of aggregated results of many load flow solutions in electric traction systems
KTH, School of Electrical Engineering (EES), Electric Power Systems.ORCID iD: 0000-0003-2109-060X
2008 (English)In: COMPUTERS IN RAILWAYS XI, WIT Press, 2008, Vol. 103, 411-423 p.Conference paper (Other academic)
Abstract [en]

Transports on rail are increasing and major railway infrastructure investments are expected. An important part of this infrastructure is the railway power supply system. The future railway power demands are naturally not known for certain. This means investment planning for an uncertain future. The more remote the uncertain future, the greater the amount of scenarios that have to be considered. Large numbers of scenarios make time demanding (some tens of minutes, each) simulations less attractive and simplifications more so. The aim of this paper is to present a fast approximator that uses aggregated traction system information as inputs and outputs. This facilitates studies of many future railway power system loading scenarios, combined with different power system configurations, for investment planning analysis. Since the electrical and mechanical relations governing an electric traction system are quite intricate, an approximator based on neural networks (NN), is applied. This paper presents a design suggestion for a NN estimating power system caused limits on active and reactive power load, i.e., limits on the levels of train traffic.

Place, publisher, year, edition, pages
WIT Press, 2008. Vol. 103, 411-423 p.
Keyword [en]
railway, neural networks, load flow
National Category
Mechanical Engineering
URN: urn:nbn:se:kth:diva-36826DOI: 10.2495/CR080411ISI: 000260454600041ScopusID: 2-s2.0-58849104391ISBN: 978-1-84564-126-9OAI: diva2:431230
11th International Conference on Computer System Design and Operation in the Railway and other Transit Systems Toledo, SPAIN, SEP 15-17, 2008
QC 20110718Available from: 2012-01-17 Created: 2011-07-15 Last updated: 2012-01-17Bibliographically approved

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Abrahamsson, LarsSöder, Lennart
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