The invention relates to the technical field of electric vehicle charging control, in particular to an electric vehicle charging load modeling method and system. The method comprises the following steps: firstly, calculating a vehicle battery charge state when a vehicle related to a charging behavior arrives at a charging station, the time when the vehicle arrives at the charging station, and a distribution function and parameters required by the battery charge state when the vehicle finishes charging according to statistical information related to travel of the electric vehicle; according to the vehicle constant-power constant-voltage charging mode, the distribution function and the parameter information, the charging process of each electric vehicle is modeled in a minute-level simulation step length through Monte Carlo simulation; and superposing the charging power of the electric vehicle in each time period to obtain a daily charging load prediction curve. Therefore, the vehicle is set to adopt a constant-power and constant-voltage charging mode, compared with a constant-current and constant-voltage charging mode, the constant-power and constant-voltage charging mode is suitable for 300kW and above high-power charging load modeling, and has lower available energy loss and higher charging efficiency in the initial charging stage.
本发明涉及电动汽车充电控制技术领域,尤其涉及一种电动汽车充电负荷建模方法及系统,该方法首先根据电动汽车出行相关统计信息计算与充电行为有关的车辆到达充电站的车辆电池荷电状态、车辆到达充电站的时间、车辆在充电结束时的电池荷电状态要求的分布函数及参数;根据车辆恒功率恒压充电方式、分布函数及参数信息,通过蒙特卡洛模拟以分钟级仿真步长建模各电动汽车的充电过程;叠加电动汽车各时段的充电功率,得到日充电负荷预测曲线。这样,设定车辆采用恒功率恒压的充电方式,相比恒流恒压的充电方式,适用于300kW及以上的大功率充电负荷建模,在充电初期具有更低的可用能量损失和更高的充电效率。
Electric vehicle charging load modeling method and system
一种电动汽车充电负荷建模方法及系统
2024-05-24
Patent
Electronic Resource
Chinese
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