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

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 type...

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Bibliographic Details
Published inEnergies (Basel) Vol. 16; no. 23; p. 7862
Main Authors Elsadd, Mahmoud A., Zobaa, Ahmed F., Khattab, Heba A., Abd El Aziz, Ahmed M., Fetouh, Tamer
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.12.2023
Subjects
adaptive coordination
Algorithms
Communication channels
Cost control
directional relay
distributed generator
Electric power
HOMER
photovoltaic (PV)
Test systems
wind turbine
Egypt
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Summary: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.
ISSN:1996-1073
1996-1073
DOI:10.3390/en16237862