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This paper shows a possible implementation for an auto configurable protection scheme based on the well-known logic selectivity concept, using an agent-based architecture with standard communication protocol (IEC 61850) and programming language (IEC 61499). An easy-to-use technique to integrate the two standards is shown, enabling the exploitation of encapsulation capabilities provided by IEC 61499 to provide easy to maintain and reusable code, along with interoperability with 61850-enabled IEDs. The proposed scheme can also implement automatic reconfiguration of protections following network topology changes.

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The operation of active distribution grids with high penetration of Distributed Energy Resources, connected to Medium Voltage bars and feeders, requires the implementation of new Medium Voltage regulation functions. Assuming that this control function is best positioned in the primary substations of the control hierarchy, the paper presents the architectural changes occurring at both the centre and the substation control levels. Possible cyber risk scenarios and mitigation countermeasures of the new SCADA architecture are discussed, in compliance with the IEC communication standards and the IEC/NIST cyber security technical recommendations related to the smart grid sector.