The invention discloses an electric vehicle charging optimization method based on a day-ahead load prediction value. The method comprises the following steps: obtaining a charging station transformer parameter and a reactive economic equivalent; calculating the optimal comprehensive operation efficiency of the charging station transformer; one day is divided into 24 time periods, each hour is one time period, the charging power of the charging pile of the charging station in each time period is optimized in real time, the reference optimization coefficient of each time period is defined as ki, and the power reference optimization coefficient ki of the electric vehicle in each time period is obtained; obtaining the number of electric vehicles being charged in the charging station in a certain period of time and the battery remaining capacity SOC of each electric vehicle; obtaining the number of electric vehicles being charged in the charging station in a certain period of time and the battery remaining capacity SOC of each electric vehicle; according to the method, real-time power optimization can be carried out on the electric vehicle connected to the charging station in each time period of one day, and optimization is carried out by using the reference optimization coefficient of each time period, so that the operand is greatly reduced, and the transformer is enabled to operate at the optimal comprehensive efficiency.

    一种基于日前负荷预测值的电动汽车充电优化方法,包括以下步骤:获取充电站变压器参数和无功经济当量;计算充电站变压器的最优综合运行效率;将一天分成24个时段,每小时为一个时段,对每个时段充电站充电桩的充电功率分别进行实时优化,定义各时段的基准优化系数为ki,获取各时段电动汽车功率基准优化系数ki;获取某时段充电站内正在充电的电动汽车的数量和每辆电动汽车的电池剩余电量SOC;获取某时段充电站内正在充电的电动汽车的数量和每辆电动汽车的电池剩余电量SOC;本发明能够对一天各时段内接入充电站的电动汽车进行实时的功率优化,用各时段的基准优化系数进行优化,大大减少了运算量,使变压器以最优综合效率运行。


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    Title :

    Electric vehicle charging optimization method based on day-ahead load prediction value


    Additional title:

    一种基于日前负荷预测值的电动汽车充电优化方法


    Contributors:
    ZHOU XINGYUE (author) / WANG ZHIDONG (author) / ZHANG ZIFAN (author) / WANG GAN (author) / WU CAN (author) / GUO LIN (author)

    Publication date :

    2022-04-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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