Communicationless Overcurrent Relays Coordination for Active Distribution Network Considering Fault Repairing Periods

Mahmoud A. Elsadd, Ahmed F. Zobaa (), Heba A. Khattab, Ahmed M. Abd El Aziz and Tamer Fetouh
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Mahmoud A. Elsadd: Electrical Engineering Department, Faculty of Engineering, Damanhour University, Damanhour 22511, Egypt
Ahmed F. Zobaa: Electronic and Electrical Engineering Department, Brunel University London, Uxbridge UB8 3PH, UK
Heba A. Khattab: Electrical Engineering Department, Faculty of Engineering, Menoufia University, Menoufia 32511, Egypt
Ahmed M. Abd El Aziz: Electrical Engineering Department, Faculty of Engineering, Menoufia University, Menoufia 32511, Egypt
Tamer Fetouh: Electrical Engineering Department, Faculty of Engineering, Menoufia University, Menoufia 32511, Egypt

Energies, 2023, vol. 16, issue 23, 1-32

Abstract: This paper presents an integrated overcurrent relays coordination approach for an Egyptian electric power distribution system. The protection scheme suits all network topologies, including adding distribution generation units (DGs) and creating new paths during fault repair periods. The optimal types, sizes, and locations of DGs are obtained using HOMER software (Homer Pro 3.10.3) and a genetic algorithm (GA). The obtained values align with minimizing energy costs and environmental pollution. The proposed approach maintains dependability and security under all configurations using a single optimum setting for each relay. The calculations consider probable operating conditions, including DGs and fault repair periods. The enhanced coordination procedure partitions the ring into four parts and divides the process into four paths. The worst condition of two cascaded overcurrent relays from the DGs’ presence viewpoint is generalized for future work. Moreover, a novel concept addresses the issue of insensitivity during fault repair periods. The performance is validated through the simulation of an Egyptian primary distribution network.

Keywords: adaptive coordination; directional relay; distributed generator; HOMER; photovoltaic (PV); wind turbine; fuel cell genetic algorithm; overcurrent protection (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: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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