Three-Level Secure Smart Protection for Ring Grid-Connected Distributed Generation

Mostafa Bakkar, Santiago Bogarra, Felipe Córcoles, Ahmed Aboelhassan, Shuo Wang () and Javier Iglesias
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Mostafa Bakkar: Department of Electrical Engineering, Universitat Politècnica de Catalunya (UPC), C. Colom 1, 08222 Terrassa, Spain
Santiago Bogarra: Department of Electrical Engineering, Universitat Politècnica de Catalunya (UPC), C. Colom 1, 08222 Terrassa, Spain
Felipe Córcoles: Department of Electrical Engineering, Universitat Politècnica de Catalunya (UPC), C. Colom 1, 08222 Terrassa, Spain
Ahmed Aboelhassan: College of Electrical Engineering, Zhejiang University, Hangzhou 310058, China
Shuo Wang: Key Laboratory of More Electric Aircraft Technology of Zhejiang Province, University of Nottingham Ningbo China, Ningbo 315104, China
Javier Iglesias: ABB Power Grids Spain S.A.U., San Romualdo 13, 28037 Madrid, Spain

Energies, 2024, vol. 17, issue 13, 1-26

Abstract: The penetration increase in distributed generators (DGs) into smart grids (SGs) will lead to new challenges, especially in protection systems. In the case of ring grids, the behavior of the short-circuit current is affected by DGs, and the medium voltage (MV) transformer connections significantly influence the changes; therefore, the protection strategies must be adapted for these scenarios. This study provides a comprehensive protection system for the MV distribution system (DS), including reconfigurable smart ring grids. The proposed protection methods contain three protection algorithms. The first protection algorithm relies on communication among all protective devices (PDs) in the grid, whereas the second protection method uses communication among PDs along the same line. Then, a third algorithm built on the local data of each PD is suggested as a backup to prevent communication issues and offer more reliable protection. MATLABTM SIMULINK simulations and experimental results on a scalable hardware grid were also employed to validate the protection algorithms.

Keywords: artificial neural network-based relay; protection strategies; smart grids; distribution system (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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