Device and method for realizing high-voltage cantilever measurement by using breakdown distance

The invention discloses a device and a method for realizing high-voltage cantilever measurement by using a breakdown distance, and relates to the field of cantilever voltage measurement. The controller is used for controlling the high-voltage vacuum circuit breaker contact system to output contact pressure under a set voltage condition; controlling the metal probe to move from the initial position to the metal shielding cover until the oscilloscope displays a pulse signal; acquiring a control distance; the control distance is the distance between the metal probe and the metal shielding cover when a pulse signal is displayed on the oscilloscope; according to the control distance, the high-voltage metal cantilever potential is determined through the breakdown characteristic curve; the high-voltage metal cantilever potential is the potential generated in the metal shielding case by the pressure intensity of the contact; according to the invention, high-voltage cantilever measurement can be rapidly realized, and