There is a continuous increase in the application of Gas Insulated Switchgear (GIS) into Electric Power Transmission and Distribution substations. Gas Insulated Switchgear is the most modern form of High Voltage Switchgear. The superior dielectric and arc quenching properties of the SF6 gas allow a substantial reduction in the size of the switchgear. GIS substations can therefore be smaller than conventional air-insulated substations. In a GIS, the active parts are metal enclosed and this increases the safety and reliability of the substation. Since the development of the first gas insulated switchgear in the late sixties, GIS technology has been used in both MV and HV switchgear.
This seminar aims to provide an overview of the most technical issues regarding GIS from both a manufacturer and user perspective. It is intended to assist engineers involved in the design, specification, installation, testing and maintenance of Gas Insulated Switchgear and substations. It covers many of the relevant topics in Gas Insulated Switchgear technology such as the understanding of the design and operation of the switchgear elements e.g. the Circuit Breaker, Disconnectors and Earth-Switches. The course also addresses GIS substation topics such as installation, substation design, insulation coordination, grounding, testing and condition monitoring.