Gas-insulation completely-enclosed combined electrical appliance monitoring device and system

The invention discloses a gas-insulation completely-enclosed combined electrical appliance monitoring device and system. The device comprises a detector, a communication device and a server. The detector is used for detecting the discharging signals of a gas-insulation completely-enclosed combined electrical appliance GIS; the communication device receives the partial discharging signals in a manner of wireless communication and transmits the partial discharging signals to the server; the server is used for determining the failure type of the GIS according to the partial discharging signals. By the aid of the device, the problem that the GIS partial discharging monitoring system is complex in structure in the prior art is solved, and the effect of simplifying the GIS partial discharging monitoring system structure is achieved.