No abstract

Gas Insulated Switchgear (GIS), as important equipment of power system, providesprimaryguarantee for its security and stability. Therefore it is significant to monitor the operating statusand working performance of GIS. In this paper, acomprehensive online monitoring system of GISwith amulti-layer distributed structure is proposed.The design realizes the monitoring of many important parameters of GIS, including the temperature of gas, the pressure of gas, operating status, three-phase mechanical properties, the characteristics of control loop, etc. The system has lots of functions such as the collectionof data, the storage and management of data, the calculation of parametersand remote communication. Field experimentsverify that the system is accurate and effective enough to meet the requirements of online monitoring.