Multi-array-element optical fiber micro-water and ultrasonic partial discharge combined detection system for transformer bushing

The invention provides a transformer bushing multi-array-element optical fiber micro-water and ultrasonic partial discharge combined detection system, which comprises an adjustable laser source configured to emit laser signals with different wavelengths according to settings; the optical splitter is configured to divide one path of laser signals emitted by the adjustable laser source into N paths of laser signals, and N is greater than or equal to 2; the optical fiber micro-water sensor is arranged in the transformer bushing and is configured to receive the laser signal output by the optical splitter so as to detect the micro-water content in the insulating oil in the transformer bushing; and the optical fiber partial discharge ultrasonic sensor is arranged on the edge surface of the insulating capacitor core in the transformer bushing and is configured to receive the laser signal output by the optical splitter so as to detect the discharge condition of the edge surface of the insulating capacitor core in the