A Distributed Coordination Approach for Enhancing Protection System Adaptability in Active Distribution Networks

Manuel Acevedo-Iles, David Romero-Quete and Camilo A. Cortes ()
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Manuel Acevedo-Iles: Department of Electrical and Electronic Engineering, Universidad Nacional de Colombia, Bogotá 111321, Colombia
David Romero-Quete: Department of Electrical and Electronic Engineering, Universidad Nacional de Colombia, Bogotá 111321, Colombia
Camilo A. Cortes: Department of Electrical and Electronic Engineering, Universidad Nacional de Colombia, Bogotá 111321, Colombia

Energies, 2024, vol. 17, issue 17, 1-19

Abstract: The electrical protection of active distribution networks is crucial for ensuring reliable, safe, and flexible operations. However, protecting these networks presents several challenges due to the emergence of bi-directional power flows, network reconfiguration capabilities, and changes in fault current levels resulting from the integration of inverter-based resources. This paper introduces an innovative protection strategy for active distribution networks, leveraging the principles of distributed coordination and multi-agent systems. The proposed strategy consists of two stages. The first stage involves a fault detection algorithm that relies solely on local measurements, while the second stage uses agent classification to compute the optimal operating time based on a dynamic matrix representation of the fault path, combined with a simplified distributed optimization problem. The coordination process is formulated as a set of linear optimization problems, simplifying the solution. The proposed protection strategy is validated in a real-time simulation environment using a modified CIGRE MV European grid as a case study, considering low-impedance symmetric fault scenarios and topological changes. The results demonstrate that the protection scheme exhibits robust performance, enhancing the adaptability of the protection equipment while ensuring suitable sensitivity and operational speed.

Keywords: active distribution network; adaptive protection; distributed coordination; fault analysis; hardware in the loop (HIL); inverter-based resource (IBR) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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