With the development of power system, the reliability and automation requirements of high voltage switchgear including gas insulated switch (GIS) equipment are also gradually improved, especially the implementation of unattended operation mode of substation automation system. To a large extent, it is required that GIS equipment be fully automatic and intelligent in monitoring, control and protection. At the same time, with the development of power electronics technology, microelectronics technology, network communication technology and computer control technology, an intelligent GIS equipment with digital processing technology as the core emerges. Intelligent GIS equipment is a combination of micro electronic technology, computer technology sensing technology and digital processing technology with electrical control technology, and is applied to the primary and secondary parts of GIS equipment. The traditional electromechanical system is developed into a modern intelligent system centered on computer. Intelligent GIS equipment mainly displays in two aspects: online measurement and control operation.<br>
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