Design and Manufacturing of a Wireless Temperature Monitoring System for Gas Insulated Switchgear

The design, manufacturing, and characterization of a temperature monitoring system is presented in this work. The system is used to measure the temperature of critical locations on the Gas Insulated Switchgear (GIS) including bus bar, contact, and switches. A compensation algorithm is developed to eliminate the influence of glass window, SF6 gas and the surface profile of the bus bar. The system is also capable of provide warning information on the overheating issues at the early stage of different equipment failures. The proposed temperature monitoring system is capable of measuring temperature of the GIS key locations in the range of 30-100°C, and an accuracy of ±2°C. The temperature monitoring system and its integration to GIS are intended to be the initial stage of the development of new GIS product line and its standard with temperature monitoring and warning function.