Introduction to automatic transmission system of power system information
Power system information automatic transmission system Referred to as telecontrol system. Its function is to realize real-time information transmission between the dispatch center and the power plant substation. The automatic transmission system consists of a telecontrol device and a telecontrol channel. The telecontrol channel has various forms such as microwave, carrier wave, high frequency, audio and light guide communication. Telecontrol devices are classified into three categories: telemetry, remote signaling, and remote control. The process of transferring the analog quantity of the plant station to the receiving end located at the dispatching center and displaying it is called telemetry. The process of conveying the switch quantity of the plant station to the receiving end and displaying it is called remote signaling. The process of transmitting the control and adjustment signals of the dispatching terminal to the receiving end located at the plant station to realize the control of the adjustment object is called remote control or remote adjustment. The telecontrol device can be divided into a wired logic type remote device and a stored program logic device according to the composition mode. The former is implemented by a hardware logic circuit in a fixed wiring manner, and the latter is a computerized remote device.