Self-induced photoelectric mixed current transformer

The invention relates to a self-induced photoelectric mixed current transformer, which detects the ultrahigh voltage large current by using an optical fiber sensor to detect the vibration information of two screws in a double screw spool with an iron core. The self-induced photoelectric mixed current transformer comprises a current bus, a precise Rogowski coil, a double screw spool with the iron core, an optical fiber grating, optical fiber, an optical fiber coupler, an optical fiber vibrating sensor, an optical fiber separator, a wavelength demodulator, a multi-wavelength LD (laser disc) light source, a photoelectric detector and a signal processing unit. The precise Rogowski coil is connected and arranged on the current base, and the double screw spool with the iron core is arranged on the precise Rogowski coil. The double screw spool with the iron core is further connected with the optical fiber grating and the optical fiber vibrating sensor. The optical fiber vibrating sensor is connected to the signal pr