Numerical Optimisation Of The Charge/discharge
Characteristics Of Wayside Energy Storage
Systems By The Embedded Simulation Technique
Using The Railway Power Network Simulator
RTSS
Author(s)
K. Shiokawa & R. Takagi
Abstract
Railways have been believed to be the best mode of transport in terms of energy
consumption. However, because other modes of transport are rapidly catching up
and improving energy efficiency, the railway industry is now keen to reduce its
energy consumption. Recent years have seen the active development of high
performance secondary batteries for pure and hybrid electric vehicles. It is
believed that these batteries can be applied to electric railways to reduce energy
consumption. The ESSs (Energy Storage Systems), in which batteries are used as
storage media, can be installed somewhere in the power supply network for
railways to charge electric energy when there is excessive regenerated power in
the network. These ESSs can also be used to assist the supply substations when
there is a high power demand. ESSs can be installed either as stationary wayside
installations or as added equipment on-board the running trains. In this paper, the
wayside installation type will be discussed.
In Japan, several ESS installations have already been commissioned and are
in use within the working railway power networks. However, the \“properness” of
their charge/discharge characteristics has not been actively evaluated. It is
believed that small changes in the voltage-current characteristics of an ESS may
have a significant impact on the actual effect of the introduction of the ESS
itself.
The effects of the introduction of ESSs can be evaluated using the multi-train
power network simulation program. Once the characteristics of the ESSs are
Keywords
optimisation, DC power feeding networks for electric railways, energy storage systems, multi-train power feeding network simulator, electric railways
Related Book
Other papers in this volume
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