Active detection apparatus and method for discharge defect of line insulator

An active detection apparatus for a discharge defect of a line insulator, comprising:

• a repetition frequency x-ray pulse light source, a solar-blind ultraviolet photosensitive detection unit, a switching quantity counter, an ultrasonic distance measurement unit, an information calculation unit and an execution control unit, wherein,
• the execution control unit is connected to each of the repetition frequency x-ray pulse light source, the solar-blind ultraviolet photosensitive detection unit, the switching quantity counter, the ultrasonic distance measurement unit and the information calculation unit, and the execution control unit is configured to control at least one of an operation start and end and an output parameter of the repetition frequency x-ray pulse light source, at least one of an operation start and end and an output parameter of the solar-blind ultraviolet photosensitive detection unit, at least one of an operation start and end and an output parameter of the switching quantity counter, at least one of an operation start and end and an output parameter of the ultrasonic distance measurement unit, and at least one of an operation start and end and an output parameter of the information calculation unit;
• and
• the repetition frequency x-ray pulse light source is configured to generate an x-ray light pulse with a repetition frequency, the ultrasonic distance measurement unit is configured to obtain a distance between the solar-blind ultraviolet photosensitive detection unit and a measured insulator, the solar-blind ultraviolet photosensitive detection unit, the switching quantity counter and the information calculation unit are connected in sequence, the solar-blind ultraviolet photosensitive detection unit is configured to detect an insulation discharge ultraviolet photon generated after x-ray excitation, the switching quantity counter is configured to count a high-level pulse sequence output by the solar-blind ultraviolet photosensitive detection unit, and the information calculation unit is configured to process information output by the switching quantity counter and provide a state determination result of the measured insulator.