Design method of voltage-regulating and capacitance-regulating switch with frequent on-off capability

The invention discloses a design method of a voltage-regulating and capacitance-regulating switch with frequent on-off capability. The method comprises the following steps: 1, designing a high-voltage side capacitance-regulating switch, wherein when a capacitance-regulating transformer performs capacitance-regulating operation on large and small capacities, the voltage-withstanding requirement on the capacitance-regulating switch is high, therefore, the high-voltage side capacitance-regulating switch is designed according to the design principle of increasing the voltage-withstanding level of the device and reducing the required cost by designing the structure of the device; and 2, designing a low-voltage side capacity-regulating and voltage-regulating switch, wherein the capacity regulating transformer is used for regulating the capacity of large and small capacities, the voltage level of the low-voltage side is low, and the voltage resistance requirement of the capacity regulating switch is low, so that a d