Ultrahigh-voltage capacitor bank bridge difference protection debugging equipment and method thereof

The invention relates to debugging equipment and a debugging method for bridge differential protection of an ultrahigh-voltage capacitor bank. The debugging equipment comprises a wiring terminal 1, a wiring terminal 2, a voltage measuring terminal, a current measuring terminal, a voltmeter, a microammeter, two groups of combined switches, a plurality of capacitors, an insulator and an equipment box body, capacitance values of bridge arms of the capacitor tower are slightly changed mainly through an external capacitor adjusting combination switch, so that products obtained by cross multiplication of capacitance values of the four bridge arms of the capacitor tower are equal, or the capacitance values of the four bridge arms are almost equal, and then the unbalanced current value reaches the standard; components such as a discharge coil, a discharge resistor and a post insulator, capacitance balance among each group of three phases, chessboard type symmetrical layout installed on two sides of a capacitor tower