Results 61 to 70 of about 1,625 (202)

Political Optimization Algorithm for Optimal Coordination of Directional Overcurrent Relays

2020 IEEE Electric Power and Energy Conference (EPEC), 2020
In this paper, the political optimization (PO) algorithm is applied to coordinate the directional overcurrent relays (DOCRs). Optimal coordination of DOCRs that used for protecting electrical networks is a nonlinear constrained optimization problem. The PO algorithm is duplicating five main phases of politics from the population which is divided into ...
Abdelhamid M., Kamel S., Mohamed M.A., Aljohani M., Rahmann C., Mosaad M.I.   +5 more
openaire   +2 more sources

Optimal Protection Planning and Coordination in Microgrids With SDGs, SFCLs, and OCR Using WOA

International Journal of Energy Research, Volume 2025, Issue 1, 2025.
One of the critical challenges in power system protection is ensuring proper relay coordination. To achieve optimal coordination of protection systems and ensure security, fast cleaning, and selection of types of faults is a necessary priority. This priority, when hosting synchronous distributed generations (SDGs), although technical factors like power
Mohammad Hassan Tanha, Majid Gandomkar, Javad Nikoukar, Ayman Al-Quraan   +3 more
wiley   +1 more source

Optimal coordination of overcurrent relays for microgrid operation using JAYA algorithm

e-Prime: Advances in Electrical Engineering, Electronics and Energy
In modern microgrids, relay coordination is a very tedious task because of the variation in magnitude and direction of fault current. The change in fault current is diverse for inverter interfaced DGs (IIDGs) and synchronous-based DGs (SBDGs) The ...
Naveen Kumar, Dinesh Kumar Jain
doaj   +1 more source

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
doaj   +1 more source

Advanced Three‐Level Characteristic of Overcurrent Relays Based on Non‐Standard Characteristic for Enhanced Microgrid Protection

International Journal of Energy Research, Volume 2025, Issue 1, 2025.
The growing integration of distributed generations (DGs) and the islanding capabilities of microgrids (MGs) have fundamentally changed the configuration of power distribution networks (DNs), significantly impacting short‐circuit current levels and thereby, challenging the reliability of conventional protection systems.
Feras Alasali, Naser El-Naily, Haytham Y. Mustafa, Hassen Loukil, Abdelaziz Salah Saidi, William Holderbaum, Rajashik Paul   +6 more
wiley   +1 more source

Enabling efficient engineering processes and automated analysis for power protection systems [PDF]

, 2018
The reliable operation of power networks depends on the correct configuration of protection systems. These systems involve the coordination of devices across a wide area, each with numerous setting parameters.
Blair, Steven M., Booth, Campbell D., Catterson, Victoria M., Dyśko, Adam, Hong, Qiteng, Rahman, Tahasin   +5 more
core   +1 more source

Impedance‐Based Adaptive Droop Control for Islanded AC Microgrids and Overview

International Transactions on Electrical Energy Systems, Volume 2025, Issue 1, 2025.
Recent improvements in the application of distributed energy resources (DERs) and microgrids (MGs) have made controlling these resources very important. However, there are still many challenges in this field. One of the anticipated challenges in islanded MGs (IMGs) is the mismatched output impedance of DERs, which affects the volt‐var regulation ...
Forough Qashqaie, Hadi Saghafi, Ramtin Sadeghi, Bahador Fani, Michele De Santis   +4 more
wiley   +1 more source

Optimal Coordination of Directional Overcurrent Relays Using an Exponential-Based Non-Standard Characteristic and the Nutcracker Optimizer

Gazi Üniversitesi Fen Bilimleri Dergisi
Directional overcurrent relays (DOCRs) play a crucial role in protecting sub-transmission and distribution systems due to their simplicity and cost- ffectiveness. For selective and rapid protection, proper coordination of these relays is essential.
Alişan Ayvaz
doaj   +1 more source

Considering Pilot Protection in the Optimal Coordination of Distance and Directional Overcurrent Relays

Iranian Journal of Electrical and Electronic Engineering, 2015
The aim of the relay coordination is that protection systems detect and isolate the faulted part as fast and selective as possible. On the other hand, in order to reduce the fault clearing time, distance protection relays are usually equipped with pilot ...
Y. Damchi, J. Sadeh, H. Rajabi Mashhadi
doaj  

Applying Hybrid PSO to Optimize Directional Overcurrent Relay Coordination in Variable Network Topologies

Journal of Applied Mathematics, 2013
In power systems, determining the values of time dial setting (TDS) and the plug setting (PS) for directional overcurrent relays (DOCRs) is an extremely constrained optimization problem that has been previously described and solved as a nonlinear ...
Ming-Ta Yang, An Liu
doaj   +1 more source