Schweitzer Engineering Laboratories, Inc. (SEL) has completed the modernization and energization of Guarujá 2, a substation integrated with the IEC 61850 protocol, belonging to Elektro Eletricidade e Serviços S.A., a large electric distribution utility in Brazil. This is the first of 30 substations SEL will modernize for Elektro by creating new HMIs and updating all SCADA systems, substation automation, and old electromechanical protection relay panels. SEL automated the control of 12 circuit breakers, 7 new motorized disconnect switches, and 2 parallel 30 MVA power transformers with load tap changer controls.
SEL integrated both IEC 61850 MMS and DNP3 LAN/WAN to exchange control data between relays, programmable automation controllers, load tap changer controls, and rugged computers.