During the third quarter of 2008, Efacec concluded an implementation of a substation automation system for EDA’s Quatro Ribeiras substation (30/15 kV). EDA is an electric power production, transmission and distribution company of the Azores, Portugal.

The project included the installation of the following systems:

-	Substation automation system based on CLP 500SCC
-	Protection, from Efacec and third parties

The supplied system is based on a distributed architecture, supported by CLP 500SCC, a supervision, command, control and protection platform, made essentially by the following hierarchical levels:

-	Central unit – a central processing module, including, among others, functions for the system database management, for the communication with bay management units and for the communication with EDA’s network control centre;
-	Bay management units – integrating protection, acquisition, automation functions, as well as a distributed human machine interface and a communications local area network.

The system installed in this substation communicates with another substation automation system, also by Efacec, existing in the Vinha Brava substation, through the IEC 60870-5-104 protocol.

With this commissioning, Efacec reaffirms its leadership in the domestic market, within the scope of sophisticated protection, command and control systems for distribution substations.