Substation automation systems commonly used network structure

Currently, the substation integrated automation system main station voltage, current, power, power switch and other metrics and information collection, and the information is sent to the control center of the station, station-level and the control center level control commands to achieve change The electric power monitoring system integration.

Integrated substation monitoring computer station attendant integrated workstation in the control room to complete the work site monitoring, control center workstation complete line of power dispatching stations to monitor the work of electrical equipment. Under normal circumstances, the control center operator workstation ESC electrically

Equipment control work force, while maintaining and debugging, decentralization of control over the control center by the substation monitoring computer for control and maintenance functions.

Substation integrated automation system (such as the use of Nanjing NARI Group Corporation production RT21-SAS-type substation integrated automation system) using hierarchical  electric transformer  architecture. System is divided into three layers: the station's senior management, network communication layer and the spacer layer.

1) station level management to set the control signal pan hot standby redundancy communication controller, universal measurement and control devices and integrated monitoring computer.

2) spacer layer comprising a dispersion of power equipment installed in a variety of computer protection and control unit, information collection devices, and the use of intelligent control unit Yingjie point of access to the field devices. Equipment includes 400V and 10kV AC protection and control unit, DC protection and control unit, variable

Pressure Thermostat, rail potential limiting device, the braking energy absorption devices, stray current monitoring unit, UPS DC panel, meter, Internet isolating switches, load switches, etc. are followed;

3) is the inner layer of the network communication and a communication network interface device, the inner bay unit via a communication network layer and the data exchange management station level.
For the substation, pulling into the buck and buck mixing, the following figure shows a typical buck hybrid  mcb circuit breaker  integrated automation system structure (thick lines dual network redundancy).

Substation monitoring network by the vendor responsible for their own configuration, and with the switch cabinet within the next bit monitoring unit (Protection and Control Unit), AC-DC device centralized monitoring, transformers thermostats and other digital communication.