The invention provides a flexible reuse type optical storage charging intelligent charging station based on a high-voltage direct-current microgrid. The system comprises a bidirectional rectification unit, a bidirectional charging pile unit, a switching unit, a charging gun, a photovoltaic power generation unit and an energy storage unit. The bidirectional rectification unit is connected with a 10kV AC power distribution network upwards, and converges with the bidirectional charging pile unit downwards at a 1kV DC bus. The switching unit is connected with the indoor machine room bidirectional charging pile unit, the energy storage unit, the outdoor charging guns and the photovoltaic power generation unit at the same time. Different direct-current charging and discharging channels are established by using a contactor fling-cut switch matrix, and different control strategies are adopted according to the charging power of the electric vehicle, so that the flexible charging of the electric vehicle can be realized; the power utilization of the fast charging station in the daytime load peak period is supported, and a photovoltaic power generation system is added for supplementation, so that the load peak-valley difference of the fast charging station can be effectively balanced, the peak clipping and valley filling effects are achieved, the stable operation of the power grid operation state is maintained, and the system operation efficiency is improved.

    本发明提供一种基于高压直流微网的灵活复用型光储充智慧充电站,该系统包括双向整流单元、双向充电堆单元、投切单元、充电枪、光伏发电单元、储能单元;双向整流单元向上与10kV交流配电网相连,向下与双向充电堆单元汇聚于1kV直流母线;投切单元同时连接室内机房双向充电堆单元、储能单元和室外若干充电枪、光伏发电单元。本发明使用接触器投切开关矩阵建立不同的直流充放电通道,根据电动汽车充电功率的大小采取不同的控制策略,可实现电动汽车柔性充电;对日间负荷高峰时期快充站用电进行支撑,并加以光伏发电系统进行补充,能够有效地平衡快充站的负荷峰谷差,起到“削峰填谷”的作用,从而维持电网运行状态的稳定运行,提高系统运行效率。


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    Title :

    Flexible reuse type optical storage charging intelligent charging station based on high-voltage direct-current microgrid


    Additional title:

    基于高压直流微网的灵活复用型光储充智慧充电站


    Contributors:
    XIANG MUCHAO (author) / LING ZAIXUN (author) / CUI YIBO (author) / JIN CHEN (author) / KANG YIQUN (author) / CHEN WEN (author) / YOU LI (author) / XIONG HAOZHE (author) / DING YONGMING (author) / WAN CHONG (author)

    Publication date :

    2021-04-13


    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 / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen



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