The method of differentiation monitoring for distribution switch cabinet based on multi-state monitoring technology

This paper summarizes the current situation of the domestic and foreign power distribution switch cabinet sensing and monitoring technology. In view of the application occasions and different conditions of various kinds of PD monitoring how to select the detection method, according to the equipment to determine the status of the device to determine whether the PD present, that is combining with the ultrasonic wave, ground wave, HFCT, temperature and humidity and other monitoring means to monitor the running state of the power distribution switch cabinet. Finally, combined with examples, analysis and summarize the relationship between the discharge and the temperature and humidity and the state of the equipment, the results show that the proposed method is effective for the differential condition monitoring of switching devices.