The invention provides an optical storage and charging microgrid system and a control method thereof. The optical storage and charging microgrid system comprises a photovoltaic power generation unit,an energy storage unit, a photovoltaic controller, an energy storage converter and a grid-connected and off-grid switching unit, the photovoltaic power generation unit is connected with a direct current bus through the photovoltaic controller, an energy storage battery and the energy storage converter are connected with the direct current bus, and a charging pile is directly hung on the direct current bus to form a direct current network; wherein the energy storage converter is connected with a power grid and a load through the grid-connected and off-grid switching unit to form an alternatingcurrent network; the photovoltaic controller is used for controlling the photovoltaic power generation unit to charge the energy storage unit; and the grid-connected and off-grid switching unit is used for realizing grid-connected and off-grid state switching of the energy storage converter. By adopting the technical scheme of the invention, the energy loss is reduced, the economy is improved, thegrid-connected and off-grid seamless switching is realized, and the power supply quality of the system is ensured; and when the power grid is powered off or abnormally fluctuates, off-grid operationcan be fully automatically realized, and uninterrupted development of optical storage and charging services is ensured.

    本发明提供了一种光储充微网系统及其控制方法,该光储充微网系统包括光伏发电单元、储能单元、光伏控制器、储能变流器和并离网切换单元,所述光伏发电单元通过光伏控制器与直流母线连接,所述储能电池、储能变流器分别与直流母线连接,充电桩直接挂在直流母线上,形成直流组网;所述储能变流器通过并离网切换单元与电网、负载连接,形成交流组网;所述光伏控制器用于控制光伏发电单元给储能单元充电;所述并离网切换单元用于实现储能变流器并网和离网的状态切换。采用本发明的技术方案,减少了能量损失,提高了经济性,实现了并离网无缝切换,保障了系统供电质量;并在电网停电或异常波动时,可全自动实现离网运行,保障光储充业务不间断开展。


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    Title :

    Optical storage and charging microgrid system and control method thereof


    Additional title:

    一种光储充微网系统及其控制方法


    Contributors:
    HE SHAOQIANG (author) / LIAO CHENCHEN (author) / LIU CHENGYU (author)

    Publication date :

    2020-10-16


    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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