Development And Application Of On-line Monitoring Of High-Voltage Switchgear Cabinet

With the development of electric power system, there is a much higher demand for the reliability of electric power equipment. As an enclosed body of High Voltage Switchgear, there is a situation that the HV Switchgears have excessive temperature rise in some areas of heavy electric load. The excessive temperature rise affects the safety and stable operation of electric power equipment. Existing measure equipment of temperature of high-voltage switchgear based on expensive sensor such as IR sensor or fiber bragg grating Sensor is faced on increasingly difficulty when being installed in switchgear with more and more complex structure.In this paper, a newly online monitoring system of high-voltage switchgear is described. The multi-point temperature field is obtained by utilizing ZigBee wireless sensor network implement. The state diagnosis and the fault alarm is acquired on base of online monitoring. Practical running manifest the accuracy and feasibleness of synthetic estimation of high-voltage made by this system. And it provides valuable experience for widely using the on-line monitoring system of high-voltage switchgear in xiaoshan power supply bureau in the future.