The invention discloses a modeling and control method for an electric vehicle charging station participating in power grid voltage regulation, and relates to the field of modeling and control of new energy equipment of a power system. The objective of the invention is to solve the problem that there is no method for controlling a charger load model and a voltage support characteristic thereof from a power system level at present. On the basis of establishing a charger model containing a voltage source type PWM rectifier, a phase-shifted full-bridge ZVS direct-current converter and the like, model simplification is carried out on the charger by utilizing an average switch model and an impedance model, and the purpose that a charging station participates in power grid voltage regulation is achieved by adopting a control method combining droop control and voltage support control. Reactive power support can be provided when the power grid voltage drops, the voltage quality of the system is improved, and the voltage stability of the system is improved. According to the method, the charger load model and the voltage support characteristics thereof are mainly controlled from the level of a power system.

    电动汽车充电站参与电网调压的建模与控制方法,涉及电力系统新能源设备建模与控制领域。为了解决目前还没有一种方法能够从电力系统层面上对充电机负荷模型及其电压支撑特性进行控制的问题。本发明在建立含有电压源型PWM整流器、移相全桥ZVS直流变换器等设备的充电机模型的基础上,利用平均开关模型和阻抗模型对充电机进行了模型简化,并且采用下垂控制与电压支撑控制相结合的控制方法实现了充电站参与电网调压的目的。本发明可以在电网电压跌落时提供无功支撑,改善系统电压质量,提高系统电压稳定性。本发明主要从电力系统层面上对充电机负荷模型及其电压支撑特性进行控制。


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    Title :

    Modeling and control method for electric vehicle charging station participating in power grid voltage regulation


    Additional title:

    电动汽车充电站参与电网调压的建模与控制方法


    Contributors:
    TIAN ZENGYAO (author) / LIU SHAOWU (author) / LI CHUNSHAN (author)

    Publication date :

    2022-06-14


    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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