Charles Newton - Newton- Evans Research Company- Niroo Research Institute USA-IRAN
Mahmood Makhdoomi - Newton- Evans Research Company- Niroo Research Institute USA-IRAN

Now a days T&D Automation Systems is one of the most important subjects in this fields . A survey about SCADA, EMS and DMS in electrical utilities in several Countries are gathered and classified in following four Regions : - Eastern Europe - Latin America - Mid East /Mediterranean/ Africa - Asia Pacific. In this paper the trend of development of SCADA , EMS, DMS , OMS, RTUs ,PLCs as well as theirs required OS , CPU platforms and protocols in the sample countries are investigated . The obtaining results from the abovementioned survey will lead the power network operators to select the best system for their own networks.

SCADA, EMS, DMS, T&D Automation,