T&D World Magazine

SEL Energizes the First of 30 IEC 61850-Based Substations for Elektro

Schweitzer Engineering Laboratories, Inc. (SEL) has completed the modernization and energization of Guarujá 2, an electrical substation integrated with the IEC 61850 suite of protocols, 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.

Guarujá 2 is one of three electrical distribution substations serving 210,000 people in the city of Guarujá, situated on the island of Santo Amaro, 55 miles southeast of São Paulo. Guarujá, with an excellent tourist infrastructure and beaches, is a fashionable and active resort area in southeast Brazil.

For Guarujá 2, SEL created new HMIs and modernized all supervisory control and data acquisition (SCADA) systems, substation automation, and old electromechanical protection relay panels. SEL automated the control of 12 circuit breakers, seven new motorized disconnect switches, and two parallel 30 MVA power transformers with load tap changer controls.

SEL technology, known for its high reliability, provided seamless system integration of both IEC 61850 MMS and DNP3 LAN/WAN to exchange control data between relays, programmable automation controllers, load tap changer controls, and rugged computers.

SEL feeder, bay control, and transformer relays communicate using peer-to-peer IEC 61850 GOOSE messages for the protection and control schemes, such as breaker failure and automatic transfer between two 138 kV lines.

"The next substation, Guarujá 3, is on schedule, with multiple feeders and a lot more substation automation and SCADA integration based on IEC 61850," said SEL Brazil District Sales Director Fernando Ayello. "We are all proud to help Elektro improve the reliability of electric power across southeast Brazil."

The integrated systems draw from SEL’s complete line of IEC 61850 products, software, engineering tools, and experience.

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