Switchgear fault monitoring system and judging method

The invention discloses a switchgear fault monitoring system and a judging method. The system comprises a controller, a display, an alarm device and a plurality of ultrasonic sensors, a vibration sensor, an infrared thermal imager and a temperature and humidity sensor arranged inside the switchgear. The ultrasonic sensor is used to monitor the ultrasonic waves generated by partial discharge in theswitchgear. The vibration sensor is used to monitor the vibration signals of the switchgear generated by the action of a circuit breaker. The infrared thermal imager is used to monitor the infrared thermal image inside the switchgear. The ultrasonic sensor, the vibration sensor, the infrared thermal imager and the temperature and humidity sensor are respectively connected with the input end of the controller, and the output end of the controller is electrically connected with the display and the alarm respectively. According to the switchgear fault monitoring system and the judging method disclosed in the invention,