Charging power distribution method and system for energy storage type urban rail train

Abstract

The invention discloses a charging power distribution method and a charging power distribution system for an energy storage type urban rail train. The method comprises the following steps: S1, acquiring the maximum allowable output current limit value of a ground charging device; S2, acquiring an auxiliary-power-supply real-time current value of a train assistance system; S3, calculating a traction-power-supply maximum allowable current value; S4, calculating a traction real-time current value; S5, calculating the maximum charging current limit value according to the traction-power-supply maximum allowable current value and the traction real-time current value; and S6, charging an energy storage device within the range of the maximum charging current limit value. The system comprises a parameter acquisition module, a traction calculation module, a calculation module and a charging control module. By reasonable distribution of the power required by charging of a traction system and an energy storage system of the train, the charging power distribution method and the charging power distribution system have the advantages that the power requirement of the train on the ground charging device can be easily and efficiently reduced, so that the construction cost of the ground charging device is reduced.

Description

technical field [0001] The invention relates to the field of charging control for energy storage urban rail trains, in particular to a charging power distribution method and system for energy storage urban rail trains. Background technique [0002] Some new urban rail trains represented by low-floor trams usually use energy storage station stop power supply, that is, there is no catenary power supply in the station operating section, and the electric energy required for train operation is provided by the on-board energy storage system through two-way DC- DC converter step-up chopper provides power supply for the train traction system (including traction subsystem and energy storage device), auxiliary system and air-conditioning system through the ground power supply device installed at each station when the station stops. Each station is usually equipped with a set of ground power supply devices. In order to save construction costs, the power of the ground power supply devic...

AI Technical Summary

Problems solved by technology

However, in the stage of train traction starting and accelerating out of the station, if the power of other systems of the train remains unchanged under the catenary power supply in the stop area, the power of the traction system will continue to rise with the acceleration of starting, resulting in the power of the ground power supply device being unable to meet the requirements of the traction system, Power requirements of on-board energy storage charging system, auxiliary system and air conditioning system

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