Operation Simulation Of Traction Systems
Author(s)
L. Abrahamsson & L. S¨oder
Abstract
The objective of this paper is initially to present a basic modeling of the railway
traction system. This model includes the basic technologies used today. The
voltage dependencies of the maximal possible power consumption as well as the
maximal velocity of the common Rc-locomotives are included. The latter is very
crucial for the studies of time table sensitivity, which is of our immediate interest.
Moreover, a method is presented that estimates the expected train delay time for
a given feeding technology. The reference timetable assumes the same train and
surrounding conditions, but no voltage drops. In the numerical example where the
developed model is applied to a realistic test system, a set of possible amounts of
railway traffic are treated as uncertainties.
Mainly, the contributions of this paper are three: compiling and connecting already
accepted models, the development of a method for numerical calculations
using this model compilation, and an example to apply this model on.
Keywords: railway, traction system, simulation, uncertainty.
1 Introduction
During the last decade, the railway has in many countries has experienced a renaissance
after several decades of decay, cut downs, and a lack of newinvestments. The
main reasons for the expansion of the railways are: environmental and economical,
as well as related to safety issues. This in turn has increased the interest in the
development of models of the railway net.
When making a decision about the future costs, possible under investments
or over investments need to be estimated in an appropriate manner. In a railway
system, a voltage drop causes the trains to run slower, while in the ordinary
power system some consumers occasionally have to be disconnected. Furthermore,
Keywords
railway, traction system, simulation, uncertainty.
Related Book
Other papers in this volume
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