Impact Of High-speed Trains In Small Isolated
Power System Phase To Phase Imbalances
Author(s)
I. Saboya, I. Egido, E. Pilo & L. Rouco
Abstract
High-speed trains are more and more widely used around the world. They are
commonly installed in interconnected power systems by connecting each traction
substation directly in different nodes among the network. The single-phase loads
of high-speed railway systems do not produce excessive dangerous phase to
phase imbalances in these robust networks. However, if high-speed trains are to
be used in small isolated power systems, such as islands or non-interconnected
power systems, problems of unacceptable phase to phase imbalances may
appear. This is due to the small size of the system and its relatively weak
network that lead to a low short-circuit power in their nodes. This paper studies
the impact of high-speed trains in small isolated power systems. Two different
connections proposed by the infrastructure manager are analyzed. These
connections try to reduce the impact of the railway network in power system
network imbalances. Both connection schemes have been tested in a real small
isolated power system in which a high-speed railway system is expected to be
installed by the year 2018. Representative peak and valley scenarios for this year
have been used in the analysis. The results obtained evidence that small isolated
power systems are very sensitive to the incorporation of high-speed trains in
their weak networks since high imbalances are obtained. Moreover, the results
allow the selection of the connection that is more capable of reducing power
system imbalances.
Keywords: high-speed train, phase to phase imbalances, small isolated power
system.
Keywords
high-speed train, phase to phase imbalances, small isolated power
system
Related Book
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