- Better information, Higher productivity
- Intelligent automation, Higher productivity and higher availability
Substation automation structure include Station level, Bay level and process level.
Station Level provides Remote communication to Network control center (NCC) ,HMI, Station level automation, data evaluation and archiving, condition monitoring, events and alarms, station level protection and Data exchange. Station level equipments are always separated in to two rooms - operation room and the communication equipment room.
Bay Level provides bay level automation, time synchronization, condition monitoring, bay level protection, bay level control, object protection and data acquisition.
Process Level includes GIS or AIS switchgear, instrument transformers, power transformers and surge arresters.Output of VT (100v or 200v) and CTs (1 or 5A)
Time synchronization has two general approches;
Separate synchronization pulse - separate wire for all the IEDs
Using communication buses- master clock broadcast time telegrams and slaves regularly ask for time
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