Results 11 to 20 of about 6,985 (272)

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

Evaluating the Effect of the Communication Link of the Relays on the Operation Time of the Protection System

Energies, 2023
In case of an error in the power system, it is the duty of the protection relays to isolate the faulty part from the rest of the system as soon as possible.
Aliakbar Azari, Abass Saberi Noghabi, Farhad Zishan, Oscar Danilo Montoya, Alexander Molina-Cabrera   +4 more
doaj   +1 more source

Optimal Coordination Of Distance And Directional Overcurrent Relays Using GA [PDF]

مجله مدل سازی در مهندسی, 2017
Proper coordination between distance relays and overcurrent in the power system is one of the most important issues for security and stability of system.
زهرا مروج, mojtaba gharjehloo, کاظم مظلومی   +2 more
doaj   +1 more source

A Novel Hybrid Overcurrent Relay Characteristics Curve to Enhance Primary-Backup Overcurrent Relay Coordination

Mian Rizwan, Ciwei Gao, Lucheng Hong, Shafiq Ahmad, Abdelaty Edrees Sayed, Mazen Zaindin   +5 more
openaire   +2 more sources

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

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

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

Non-Communication Based Time-Current-Voltage Dual Setting Directional Overcurrent Protection for Radial Distribution Systems With DG

IEEE Access, 2020
This paper proposes a novel protection scheme equipped with time current voltage dual setting directional overcurrent relays for radial distribution systems with (distributed generation) DG without the need of communication assistance.
Ahmed Abdullah Balyith, Hebatallah Mohamed Sharaf, Mostafa Shaaban, Ehab F. El-Saadany, H. H. Zeineldin   +4 more
doaj   +1 more source

Harmonic Effects on Electromechanical Overcurrent Relays [PDF]

Doğuş Üniversitesi Dergisi, 2005
Elektromekanik asiri akim koruma roleleri sinusoidal akim altinda calismak uzere tasarlanmistir. Bu rolelerin harmonikli akimda calismalari guvenilir degildir. Literaturde harmonikler ve rolelerle ilgili pek cok teorik calisma bulunmaktadir. Bu makalede, harmoniklerin elektromekanik ters zamanli asiri akim rolesinin (TZAAR) calismasina etkileri ...
Dalcı, K. Burak, Yumurtacı, Recep, Bozkurt, Altuğ   +2 more
openaire   +3 more sources

Optimal Adjustment of Dualsetting Overcurrent Relays in Inverter-Based Microgrids [PDF]

Iranian Journal of Electrical and Electronic Engineering, 2023
Increasing the penetration of distributed generation (DG) systems in power systems has many advantages, but it also has problems, including interference with the proper functioning of the protection systems.
Seyed Masoud Barakati, Farzad Tahmasebi
doaj