Electrohydraulic dynamic shift arc extinguishing structure, arc extinguishing method, and application

An electrohydraulic dynamic shift arc extinguishing structure, wherein the shift arc extinguishing structure comprises an insulating enclosure (1), an air terminal (2), a lower electrode plate (4), and a free telescoping shift assembly (6) vertically arranged in a cavity of the insulating enclosure (1), wherein the cavity of the insulating enclosure (1) is filled with an insulating liquid (7);

• the air terminal (2) is vertically arranged at a top end of the insulating enclosure (1), a lower end of the air terminal (2) extends downward into the insulating enclosure (1) and is electrically connected to an upper end of the free telescoping shift assembly (6);
• the lower electrode plate (4) is horizontally arranged in a bottom end of the insulating enclosure (1), a screw (5) is vertically arranged at the bottom end of the insulating enclosure (1), an upper end of the screw (5) vertically extends upward into a bottom end in the cavity of the insulating enclosure (1) and is connected to a lower surface of the lower electrode plate (4), and a lower end of the free telescoping shift assembly (6) vertically extends downward to a position above the lower electrode plate (4) and is in contact with an upper surface of the lower electrode plate (4), or separated from the upper surface of the lower electrode plate (4) by a gap.