... substation microcomputer monitoring device, town-level central station system, MIS and so on. GT8200 station automation system can be divided into three ... layer, communication layer and spacer layer. In this case, station-level control layer includes the standby server, operator working ... , like the local control unit (LCU) , public / switching station LCU (LCU), local control unit (LCU) of the gate, ...