Results 1 to 10 of about 224 (167)

Optimization Techniques for Directional Overcurrent Relay Coordination: A Comprehensive Review

IEEE Access
This paper provides a comprehensive review of optimization techniques for coordinating directional overcurrent relays in power systems. It covers a wide range of techniques, including conventional and deterministic methods, metaheuristic algorithms, and ...
Tareq Foqha, Samer Alsadi, Osama Omari, Shady S. Refaat   +3 more
doaj   +4 more sources

Improving Directional Overcurrent Relay Coordination in Distribution Networks for Optimal Operation Using Hybrid Genetic Algorithm with Sequential Quadratic Programming

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
doaj   +3 more sources

Optimal coordination of directional overcurrent relay based on combination of Firefly Algorithm and Linear Programming

Ain Shams Engineering Journal, 2022
Optimal coordination and settings of directional overcurrent relays (DOCRs) are crucial task to ensure reliable and effective protection in power system networks. The settings of DOCRs are plug setting current (PSC) and time multiplier setting (TMS). The
Suzana Pil Ramli, Hazlie Mokhlis, Wei Ru Wong, Munir Azam Muhammad, Nurulafiqah Nadzirah Mansor   +4 more
doaj   +3 more sources

Performance evaluation of advanced metaheuristic algorithms for directional overcurrent relay coordination in distribution networks [PDF]

Scientific Reports
Directional Overcurrent Relay (DOCR) coordination has become an increasingly important problem in modern distribution networks, where growing system complexity and high fault-current variability demand fast and highly selective protection strategies ...
İbrahim Arslanoğlu, İsmail Hakkı Altaş, Heybet Kılıç   +2 more
doaj   +2 more sources

OptiCoord: Advancing directional overcurrent and distance relay coordination with an enhanced equilibrium optimizer [PDF]

Heliyon
In this article, an improved optimization technique is used to get a solution to the problem of coordination between directional overcurrent relays (DOCR) and distance relays. An enhanced version of an equilibrium optimization algorithm (EO), referred to
Ahmed Korashy, Salah Kamel, Francisco Jurado, Wulfran Fendzi Mbasso   +3 more
doaj   +2 more sources

A novel scheme for current-only directional overcurrent relay

International Journal of Electrical Power and Energy Systems, 2016
Abstract Overcurrent relays are widely used as main protection in sub-transmission and distribution systems. In mesh and multi-source networks, application of directional relay is unavoidable. Traditional directional overcurrent relays use the reference voltage phasor as the polarizing quantity to estimate the direction of the fault.
Morteza Nojavan, Mehdi Mehdinejad, Heresh Seyedi   +2 more
exaly   +2 more sources

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
doaj   +1 more source

PESA II Algorithm-Based Optimal Coordination of Directional Overcurrent Relays in microgrid [PDF]

هوش محاسباتی در مهندسی برق, 2022
This paper deals with the optimal set of directional overcurrent relays using intelligent methods when the problem has multi-objective functions with different constraints.
Parviz Omidi Brojeni, Saeed Abazari, mohammad madani   +2 more
doaj   +1 more source

Coordination of overcurrent relays in microgrids according to the input and output of resources [PDF]

مجله مدل سازی در مهندسی, 2022
In this paper, the directional overcurrent relays are adjusted according to the input and output of resources in the microgrid. Changes in the network structure will change the performance of the relays, so they will cause interruptions and thus reduce ...
saeed abazari, parviz omidi
doaj   +1 more source

Optimal overcurrent relay coordination for interconnected power systems: A proper approach and improved technique

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, Kartik S. Pandya, Santosh C. Vora, Chintan R. Mehta, Vipul R. Rajput   +4 more
doaj   +1 more source