Railway vehicle energy consumption management device

Abstract

A railway vehicle energy consumption management device includes an information collection unit, a power calculation unit, an energy consumption prediction unit, a margin assessment unit, a management decision unit, and a cross-system control unit. The information collection unit receives information about the railway vehicle. The power calculation unit calculates the power of individual components. The energy consumption prediction unit calculates the estimated remaining energy using a forward-looking segmentation method. The margin assessment unit compares the estimated remaining energy with a safety threshold value. When energy is insufficient, the management decision unit actively outputs at least one energy-saving control command to the cross-system control unit to regulate the power consumption of the onboard subsystem.

Claims

1. A railway vehicle energy consumption management device, installed in a railway vehicle, the railway vehicle having an on-board energy storage unit, the railway vehicle energy consumption management device comprising: an information collection unit for receiving train operation information, route information, energy storage system information of the on-board energy storage unit, and external environmental information of the railway vehicle; a power calculation unit electrically connected to the information collection unit, the power calculation unit calculating, based on the train operation information, route information, energy storage system information, and external environmental information, a traction power, an air conditioning power, a braking power, and a lighting power of the railway vehicle, to calculate a total energy demand; and an energy consumption prediction unit electrically connected to the power calculation unit, the energy consumption prediction unit dividing a full route into multiple micro-segments based on the route information, and cumulatively calculating, based on the total energy demand, the future operating energy consumption, station recharging energy, and regenerated energy of each micro-segment, to calculate an estimated remaining energy. A margin assessment unit, electrically connected to the energy consumption prediction unit, continuously compares the estimated remaining energy with a safety threshold value; a management decision unit, electrically connected to the margin assessment unit, actively outputs an energy-saving control command when the estimated remaining energy is lower than the safety threshold value; and a cross-system control unit, electrically connected to the management decision unit and electrically connected to the on-board energy storage unit, receives the energy-saving control command and regulates the power consumption of the multiple on-board subsystems of the railway vehicle according to the energy-saving control command.

2. The railway vehicle energy consumption management device as described in claim 1, wherein, The information collection unit includes: an operation information receiving module for receiving train operation information; a route information receiving module for receiving route information; an energy storage information receiving module for receiving energy storage system information; and an environmental information receiving module for receiving external environmental information.

3. The railway vehicle energy consumption management device as described in claim 1, wherein, The cross-system control unit is used to regulate one of the train's operating strategies, one air conditioning set temperature, one passenger compartment overall brightness, and one stop charging time, so as to directly regulate the power consumption of the multiple onboard subsystems.

4. The railway vehicle energy consumption management device as described in claim 2, wherein, The train operation information includes the train's load and its real-time speed.

5. The railway vehicle energy consumption management device as described in claim 2, wherein, The route information includes the distance between stations, the gradient, the curve radius, the speed limit, and the location where charging stations are available.

6. The railway vehicle energy consumption management device as described in claim 2, wherein, The energy storage system information includes the real-time power level and health status of one of the on-board energy storage units.

7. The railway vehicle energy consumption management device as described in claim 2, wherein, The external environmental information includes the outside temperature, the ambient wind speed, and the sunlight intensity.

8. The railway vehicle energy consumption management device as described in claim 3, wherein, In response to the energy-saving control command, the cross-system control unit performs at least one of the following actions: reducing a target maximum vehicle speed, smoothing an acceleration curve, adding a coasting section, increasing the air conditioning set temperature, limiting the operating power of a compressor, reducing the overall brightness of the passenger compartment, implementing zone lighting control, increasing the charging time at the station, and activating a pantograph in advance.

9. The railway vehicle energy consumption management device as described in claim 1, wherein, The safety threshold value is stored in the management decision unit, and the safety threshold value has a preset power threshold corresponding to the on-board energy storage unit.

10. The railway vehicle energy consumption management device as described in claim 1, wherein, The information collection unit, the power calculation unit, the energy consumption prediction unit, the margin assessment unit, and the management decision-making unit employ a high-frequency rolling closed-loop update mechanism, updating once every 10 seconds, to execute a control cycle.

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