Results 1 to 10 of about 2,491 (81)

Optimal protection coordination of DOCRs for microgrids using a hybrid deep reinforcement learning and metaheuristic optimization framework [PDF]

Scientific Reports
Directional overcurrent relays (DOCRs) protection in modern microgrids is problematic, because of the massive inverter-based distributed generation penetration, the flow of power in both directions, lower fault currents, and an extremely high rate of ...
Yuxuan Chen
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Optimal Coordination of Directional Overcurrent Relays for Microgrids Using ‎Hybrid Interval Linear Programming - Differential Evolution [PDF]

Journal of Operation and Automation in Power Engineering, 2022
The relay coordination problem of directional overcurrent has  been an  active research issue in distribution networks and power transmission. In general, the problem of relay coordination is the nonlinearity of the optimization problem, which increases ...
P. Omidi, S. Abazari, S.M. Madani
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Application of Equilibrium Optimizer Algorithm for Solving Linear and non Linear Coordination of Directional Overcurrent Relays

Advances in Electrical and Electronic Engineering, 2022
The safety and reliability of an electrical network depend on the performance of the protections utilized. Therefore, the optimal coordination of the protective devices plays an essential role.
Khaled Guerraiche, Feriel Midouni, Nour Elhouda Sahraoui, Latifa Dekhici   +3 more
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An Improved Technique of Hybridization of PSO for the Optimal Coordination of Directional Overcurrent Protection Relays of IEEE Bus System

Energies, 2022
The use of a directional overcurrent protection relay (DOPR) to protect an electrical power system is a crucial instrument for keeping the system dynamic and avoiding undue interruption.
Kashif Habib, Xinquan Lai, Abdul Wadood, Shahbaz Khan, Yuheng Wang, Siting Xu   +5 more
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Optimal Coordination of Directional Overcurrent Relays Using Hybrid Firefly–Genetic Algorithm

Energies, 2023
The application of directional overcurrent relays (DOCRs) plays an important role in protecting power systems and ensuring their safe, reliable, and efficient operation.
Tareq Foqha, Maher Khammash, Samer Alsadi, Osama Omari, Shady S. Refaat, Khaled Al-Qawasmi, Ali Elrashidi   +6 more
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The Hybridization of PSO for the Optimal Coordination of Directional Overcurrent Protection Relays of the IEEE Bus System

Energies, 2023
The hybridization of PSO for the Optimal Coordination of Directional Overcurrent Protection Relays (DOPR) of the IEEE bus system proposes a new method for coordinating directional overcurrent protection relays in power systems.
Yuheng Wang, Kashif Habib, Abdul Wadood, Shahbaz Khan   +3 more
doaj   +1 more source

An Improved Optimal Solution for the Directional Overcurrent Relays Coordination Using Hybridized Whale Optimization Algorithm in Complex Power Systems

IEEE Access, 2019
The directional overcurrent relays (DOCRs) coordination is a useful tool in guaranteeing the safe protection of the power system by the proper coordination of primary and backup protection systems. The optimization model of this problem is non-linear and
Tahir Khurshaid, Abdul Wadood, Saeid Gholami Farkoush, Jiangtao Yu, Chang-Hwan Kim, Sang-Bong Rhee   +5 more
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Nature-Inspired Whale Optimization Algorithm for Optimal Coordination of Directional Overcurrent Relays in Power Systems

Energies, 2019
In power systems protection, the optimal coordination of directional overcurrent relays (DOCRs) is of paramount importance. The coordination of DOCRs in a multi-loop power system is formulated as an optimization problem.
Abdul Wadood, Tahir Khurshaid, Saeid Gholami Farkoush, Jiangtao Yu, Chang-Hwan Kim, Sang-Bong Rhee   +5 more
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Oppositional Jaya Algorithm With Distance-Adaptive Coefficient in Solving Directional Over Current Relays Coordination Problem

IEEE Access, 2019
The model of directional over current relays (DOCRs) coordination is considered as an optimization problem. It is generally formulated as linear programming (LP), non-linear programming (NLP) and mixed integer non-linear programming (MINLP), according to
Jiangtao Yu, Chang-Hwan Kim, Sang-Bong Rhee   +2 more
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Hybridized Symbiotic Organism Search Algorithm for the Optimal Operation of Directional Overcurrent Relays

Complexity, 2018
This paper presents the solution of directional overcurrent relay (DOCR) problems using Simulated Annealing based Symbiotic Organism Search (SASOS). The objective function of the problem is to minimize the sum of the operating times of all primary relays.
Muhammad Sulaiman, Ashfaq Ahmad, Asfandyar Khan, Shakoor Muhammad   +3 more
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