A Novel Peak Power Demand Reduction Strategy
Under A Moving Block Signalling System
Author(s)
Q. Gu, L. Pei, F. Cao & T. Tang
Abstract
The Moving Block Signalling (MBS) system is a system where the tracking
target point of the following train is moving forward with the leading train. In the
MBS system, a dense queue of trains starting (or re-starting) in very close
succession would cause an overload of the substations. The time delay and
acceleration rate limit are introduced in the traditional approaches to solve this
problem. However, such approaches increase the travel time between the
successive stations, and the service quality decreases. In this paper, a novel
approach ‘Service Headway Braking’ (SHB) is proposed based on some
knowable extra station dwell time. It can efficiently avoid the peak electrical
demand problem without increasing the time delay. The simulation result shows
that, with flexible adjustment of the start (or restart) time and velocity, the
passenger waiting time can be shortened while considering energy saving.
Keywords: peak power demand, moving signalling block system, station time
delay, energy saving.
1 Introduction
Moving-block signalling (MBS) was proposed a few decades ago [1] to reduce
headway among successive trains in a track line. Theoretically, two successive
trains are separated by a distance equivalent before the braking point of the
following train to brake to a complete stop from its current speed, as well as a
safety margin. The separation can be reduced and changed with the limit for the
given operating speed and train characteristics, such as train length and braking
rate.
Keywords
peak power demand, moving signalling block system, station timedelay, energy saving
Related Book
Other papers in this volume
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