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e-Prime: Advances in Electrical Engineering, Electronics and Energy, 2023 The optimum setting of directional overcurrent relays (DOCRs) is required to avoid miscoordination and avail fast response. To fulfill these requirements, it is required to prefer optimization techniques and modifications in objective functions (OF ...
Shanker D. Godwal +4 more
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Optimal Coordination of Directional Overcurrent Relays Using PSO-TVAC [PDF]
, 2015 This paper presents an efficient variant of particle swarm optimization (PSO) algorithm named Time Varying Acceleration Coefficients (PSO-TVAC) to solve the optimal coordination of directional overcurrent relays (DOCRs) in a practical power system ...
Hadji, B. +4 more
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Summary of useful concepts about the coordination of directional overcurrent protections
CSEE Journal of Power and Energy Systems, 2019 This paper summarizes some useful concepts about the coordination of directional overcurrent protections. The following key topics are described: the analysis of systems in a ring configuration and only one source of short-circuit currents; the ...
Elmer Sorrentino, Naren Gupta
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Harmonic Dual-Setting Directional Overcurrent Protection for Inverter-Based Islanded Microgrids
IEEE Access, 2023 Limited fault currents in inverter-interfaced islanded microgrids impose immense challenges on conventional overcurrent protection schemes. This paper proposes a sensitive and selective protection scheme for islanded microgrids using a third harmonic ...
Talal Elemamali Sati +2 more
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Energies, 2023 In recent years, with the growing popularity of smart microgrids in distribution networks, the effective coordination of directional overcurrent relays (DOCRs) has presented a significant challenge for power system operators due to the intricate and ...
Faraj Al-Bhadely, Aslan İnan
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Coordination of Overcurrent, Directional and Differential Relays for the Protection of Microgrid System [PDF]
, 2013 Microgrid implementation draws new challenges especially in the coordination of protective devices that are not likely to appear in a traditional distribution network.
Mohamed, Azah +2 more
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IET Generation, Transmission & Distribution, 2021 Abstract The main protection equipment in radial distribution networks are non‐directional overcurrent relays (NDOCR) and fuses which are coordinated using the conventional protection coordination method.
Mahdi Ghotbi‐Maleki +3 more
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IEEE Access, 2022 Microgrids are promising to enhance power distribution systems’ efficiency, quality, sustainability, and reliability. However, microgrids operation can impose several challenges to traditional protection schemes, like changes in the power flow ...
Cleberton Reiz, Jonatas Boas Leite
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Mehran University Research Journal of Engineering and Technology, 2020 In modern and large scale power distribution topologies, directional relays play an important role in the operation of an electrical system. These relays must be coordinated optimally so that their overall operating time is reduced to a minimum. They are
Muhammad Sulaiman +3 more
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Application of evolutionary algorithms for optimal directional overcurrent relay coordination [PDF]
, 2014 Includes bibliographical references.Relay coordination is necessary to ensure that while protection relays operate as fast as possible, they are also able to isolate only the faulted parts of the system from the network, ensuring that a power system ...
Stenane, Ndabeni Moses
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