Railway Modelling For Power Quality Analysis
Author(s)
M. Chymera, A. C. Renfrew & M. Barnes
Abstract
Power quality is increasingly important in the consideration of railway systems.
Poor power quality affects the performance of trains and introduces problems for
local distribution networks.
This paper looks at improving modelling techniques to assess the power
quality of a railway system. Modelling techniques used to simulate electrified
railways are adapted to simulate power quality aspects with improved
computational efficiency. The model developed is used to assess the voltage
regulation and harmonic distortion of a rail system, and harmonic distortion on
the local distribution network.
Keywords: power quality, harmonics, electric traction, modelling.
1 Introduction
Power quality has become an increasing concern in railway systems. Poor power
quality affects the performance, reliability of the railway system as well as
having an effect on equipment attached to the local distribution network. The
analysis of power quality on a rail system is essential, to enable the analysis of
train performance and to assess the effects of a rail system on the adjacent
distribution network.
Railway systems are electrically complex. The loads, trains, are constantly
moving and their electrical behaviour is constantly changing. Modelling is an
ideal tool to analyse the power quality of such a complex system. An ideal model
would be accurate yet computationally efficient.
2 Power quality
Power qQuality has to be considered from two perspectives, the railway system
and the local distribution network to which it is attached. Poor power quality on
Keywords
power quality, harmonics, electric traction, modelling.
Related Book
Other papers in this volume
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