Computer-aided Design Of ATO
Speed Commands According To
Energy Consumption Criteria
Author(s)
M. Domínguez, A. Fernández, A. P. Cucala & L. P. Cayuela
Abstract
Traffic regulation systems of metro lines equipped with Automatic Train
Operation (ATO) use a set of pre-programmed speed commands selecting
coasting points and brake deceleration. Different speed commands provides
different travel times between stations and the regulation system on-line selects
and sends to the train one of these commands. Nowadays, speed commands are
designed based on time and comfort criteria. In this paper a new approach of
speed commands design, which takes into account not only present operational
criteria but also energetic ones, is proposed in order to obtain energy efficient
ATO commands. Firstly, the travel time and energy consumption of every
command is calculated using a simulator that combines all the possible discrete
values of the ATO configuration parameters. A set of systematic rules has been
defined to include the consumption, operative and comfort criteria in the
selection of the speed commands applying decision theory techniques. A
software tool has been implemented for a computer-aided design of the speed
commands. This tool includes a thorough simulation module of the train
movement (ATO, motor and train dynamics), an automatic generator of every
possible command and a graphical assistant for the speed commands selection
according to the mentioned rules. The methodology described in this paper has
been used to redesign the current ATO commands (4 for each station) of Line 1
of Madrid Underground. The results are presented in this paper. According to the
simulation results, about 10% of energy savings are expected to be achieved with
these new speed commands.
Keywords: energy consumption, speed commands design, train simulation.
Keywords
energy consumption, speed commands design, train simulation.
Related Book
Other papers in this volume
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