The invention discloses a relay protection method and device for an electric vehicle photovoltaic charging station. The method comprises the steps of 1, communication connection; step 2, comparing electrical quantities; step 3, fault judgment; step 4, implementing protection; the device comprises a base, a protective shell, a relay protection device body, a shutter adjusting assembly, a damping assembly, a supporting leg, a telescopic spring, a ball, a third rotating shaft, an arc-shaped groove and a torsion spring. A low-voltage-difference-current starting element is additionally arranged on the weak current side to enhance the protection sensitivity; according to the designed shutter adjusting assembly, the angles of the shutters can be circularly adjusted, so that dust on the shutters can be uniformly removed when the cooling fan works; according to the damping assembly designed by the invention, through a double buffering mode, the risk that the structure is damaged due to external impact is effectively reduced, and the service life of equipment is prolonged.

    本发明公开了电动汽车光伏充电站的继电保护方法及装置,方法包括步骤一,通信连接;步骤二,电气量对比;步骤三,故障判断;步骤四,实施保护;装置包括底座、保护壳、继电保护装置本体、百叶调节组件、减震组件、支撑脚、伸缩弹簧、滚珠、第三转轴、弧形槽和扭力弹簧,本发明相较于现有的继电保护方法,通过在长线路上进行电容电流补偿避免保护信号误动,并在弱电侧加装低压差流起动元件来增强保护灵敏性;本发明设计的百叶调节组件,能够循环调整百叶角度,使散热扇工作时能均匀的将百叶上的灰尘去除;本发明设计的减震组件,通过双重缓冲的方式,有效的降低了外部冲击使结构受损的风险,延长了设备的使用寿命。


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    Titel :

    Relay protection method and device of electric vehicle photovoltaic charging station


    Weitere Titelangaben:

    电动汽车光伏充电站的继电保护方法及装置


    Beteiligte:
    FU FUPAN (Autor:in)

    Erscheinungsdatum :

    2024-01-05


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / B08B Reinigen allgemein , CLEANING IN GENERAL / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / F16F SPRINGS , Federn / G08C Übertragungssysteme für Messwerte, Regel-, Steuer- oder ähnliche Signale , TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS / H02B BOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER , Schalttafeln, Unterstationen oder Schaltanordnungen für die Abgabe oder Verteilung elektrischer Energie



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