Design, implementation and real-time testing of an IEC 61850 based FLISR algorithm for smart distribution grids

This paper presents a novel Distributed FLISR algorithm that uses Intelligent Electronic Devices (IEDs) configured to communicate the status changes and the measurements with one another using IEC 61850 GOOSE messages. Evaluation of the performance of the algorithm requires real-time simulation; therefore, a modular real time test platform using Real Time Digital Simulator (RTDS) and IEDs supporting IEC 61850 GOOSE is setup. A list of userdefined information including status changes and measurements that needs to be exchanged by the IEDs, required for implementing the proposed algorithm is presented. To validate the performance and showcase the flexibilities offered by the algorithm, like measurement-based selectivity in Service Restoration and covering of multiple faults, three case scenarios are simulated with a model of the real distribution grid, managed by A2A Reti Elettriche SpA in Brescia.