Strategy Of Speed Restriction Allowing Extended
Running Times To Minimize Energy Consumption
And Passenger Disutility
Author(s)
N. Kimura & M. Miyatake
Abstract
Due to a power crisis caused by the Great East Japan Earthquake on 11 March
2011 and the subsequent accident of Fukushima Daiichi nuclear power station,
electrical energy consumption used in every sector including railway operators
was restricted by the government in the summer of the same year. Since then,
railway manufacturers, operators and research organizations have developed
technologies of reducing train energy consumption. Improvement of scheduling
and train speed control for energy-savings only needs software-based
improvements that lead to less cost and time. The authors consider \“restraining
maximum speed of the train allowing extended running times” in order to reduce
train energy consumption against power crisis or substation failure. The problem
was defined as a multiobjective optimization problem. Energy consumption and
total incremental trip time were calculated as objective functions by using speed
profile simulation. The total incremental trip time was calculated with the
increased sum of all passengers’ running, stoppage and waiting times by speed
restriction. All the feasible combinations of setting maximum speed restriction
for each train were tested to find the pareto-optimal solutions. The final solutions
which are better than the curtailed train service were selected from the paretooptimal
solutions. The efficacy of the proposed method was demonstrated with a
case study of one direction service of a double track commuter line.
Keywords: power crisis, energy-saving, multiobjective optimization, trip time,
maximum speed restriction, pareto-optimal solutions.
Keywords
power crisis, energy-saving, multiobjective optimization, trip time,
maximum speed restriction, pareto-optimal solutions.
Related Book
Other papers in this volume
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