A light storage charging and discharging intelligent micro-grid system suitable for a smart rail station and a control method thereof

By adopting a shared high-voltage DC bus topology and hierarchical load distribution logic between the top pantograph and the vehicle-side interface in the smart rail depot, and combining energy scheduling driven by train operation plans, the charging adaptation and energy scheduling problems of the smart rail depot have been solved, the operational support capability and energy and carbon data integration have been improved, and an efficient and safe photovoltaic-storage-charging-discharging smart microgrid system has been realized.

CN122118768APending Publication Date: 2026-05-29SICHUAN SHUDAO NEW STANDARD RAIL GRP CO LTD +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SICHUAN SHUDAO NEW STANDARD RAIL GRP CO LTD
Filing Date
2026-02-10
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing photovoltaic-storage-charging solutions cannot meet the unique dual-mode charging requirements of pantographs and charging guns for intelligent rail vehicles. The energy dispatching strategy is not combined with the train operation schedule and lacks a graded load guarantee mechanism, resulting in insufficient operational support capabilities. Furthermore, the integration of energy and carbon data is low, making it difficult to meet the specific requirements of intelligent rail stations.

Method used

It adopts a topology structure in which the top pantograph and the vehicle-side interface share a high-voltage DC bus. Based on the energy dispatch strategy driven by the train operation plan, it constructs a hierarchical load distribution and emergency power supply logic. Combined with the energy and carbon data interface module, it realizes multi-mode coordinated operation of photovoltaic, energy storage, intelligent rail vehicles and the power grid.

Benefits of technology

It ensures the timely departure of intelligent rail vehicles and the power supply of key equipment, enhances the safety, resilience and energy efficiency of the power supply system, supports the carbon-neutral construction of intelligent rail stations, and provides traceable energy and carbon data support.

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Abstract

The application discloses a photovoltaic energy storage charging and discharging intelligent micro-grid system suitable for a smart rail station and a control method thereof, relates to the technical field of urban rail transit power supply and distributed energy utilization, and adopts a top pantograph and a vehicle-side interface shared high-voltage direct-current bus topology, an energy scheduling strategy based on a train operation plan and a battery state driving, and a hierarchical load power distribution and emergency power supply logic, so that multi-mode coordinated operation among photovoltaic power generation, energy storage, a smart rail vehicle and a power grid is realized, while ensuring that a train departs according to a diagram and the safety of power supply of key equipment, unified monitoring and accounting of station energy carbon data are completed.
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