Following the advanced technology applied in the automated substation systems, coupled with the adoption of the standards laid down in IEC 61850, CTEEP started implementing a digitalization program in substations, which covered, in the initial stage, the substations of Mongaguá, Jaguari, Porto Ferreira, Mairiporã and Edgar de Souza.

The substations of Mongaguá, located in the shoreline of São Paulo State, was the first to be fully digitalized in early 2009. The digitalization of the substations of Jaguari, Porto Ferreira and Mairiporã, received investments of R$ 12 million. At present, the digitalization of the SE Edgard de Souza substation is in progress, expected to be completed during the first half of 2014, which will absorb investments of R$ 20 million.

This solution happens to meet all functions required by the substation`s protection and automation system, conferring interoperability with equipment from other manufacturers, further enabling a more intelligent and economic maintenance. In the event of malfunction, this system allows for a more accurate and nimbler assessment, thus ensuring a shorter period of unavailability of the electric system. Moreover, the architecture model used has proved to be safe as regards the transmission of information throughout the communication network, thus allowing for increased reliability as concerns the data integrity required for the substation operation.