Design of Online Monitoring System of Switchgear Based on Multi-State Characteristics

With the continuous progress of condition maintenance of high voltage switchgear equipment, higher requirements are put forward for the condition monitoring of switchgear. In order to ensure the reliable operation of high voltage switchgear, this paper designs an on-line monitoring system of switchgear based on multi-state characteristics. Based on the principle of ultrasonic partial discharge detection, and the acquisition of ozone, temperature and humidity signals, combined with fuzzy theory and evidence reasoning algorithm, the state of the switchgear is evaluated. The application of this monitoring system realizes the remote operation and maintenance of high-voltage switchgear and meets the demand for real-time monitoring of high voltage switchgear equipment.