The invention provides a bidirectional charging and discharging system and a control method and device thereof, and a medium, and the method comprises the steps: obtaining the electric energy data of a power utilization end load and the electric energy data outputted by the bidirectional charging and discharging system, and determining that a power grid generates countercurrent according to the electric energy data of the power utilization end load and the electric energy data outputted by the bidirectional charging and discharging system. And when the countercurrent power of the power grid is greater than the allowable countercurrent power of the power grid, lowering the discharge power output by the bidirectional charge-discharge system. Therefore, additional hardware equipment such as an anti-countercurrent control cabinet can be not arranged any more, and a contactor in the anti-countercurrent control cabinet is not cut off to cut off the electrical connection between the bidirectional charging and discharging equipment in a discharging state and the power grid, so that the control process of the bidirectional charging and discharging system is continuous and flexible, the impact on the power grid is reduced, and the reliability of the system is improved. The operation stability of the power grid is improved, and the service life and the safety of the bidirectional charging and discharging system can be improved.

    本申请提供了一种双向充放电系统及其控制方法、设备和介质,包括获取用电端负载的电能数据和双向充放电系统输出的电能数据,当根据用电端负载的电能数据和双向充放电系统输出的电能数据,判断出电网发生逆流,且电网的逆流功率大于电网允许逆流功率时,调低双向充放电系统输出的放电功率。这样,可以不再设置防逆流控制柜这种额外的硬件设备,也不会切断防逆流控制柜中的接触器,来切断处于放电状态下的双向充放电电设备与电网之间的电性连接,从而使得对双向充放电系统的控制过程为连续、柔性的,减小了电网的冲击,提高了电网运行稳定性,且还可以提高双向充放电系统的寿命、安全性。


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    Title :

    Bidirectional charging and discharging system, control method and equipment thereof and medium


    Additional title:

    双向充放电系统及其控制方法、设备和介质


    Contributors:
    ZHU JINGKAI (author) / DU YANG (author) / CUI YONG (author) / WU GUANGTAO (author) / TAN ZHUOHUI (author) / JIANG JINGSONG (author) / LIU JUN (author) / XIANG CHEN (author) / YAO ZHENJIA (author) / YANG ZHONGGUANG (author)

    Publication date :

    2024-01-02


    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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