Results 41 to 50 of about 1,041,598 (189)

Overcurrent relay coordination of 154/34,5 kV Hasançelebi substation by league championship algorithm

, 2017
In this study, non-directional overcurrent relay coordination was done in 154/34.5 kV Malatya Teias Hasancelebi transformer centre using League Championship Algorithm (LCA). Standard inverse time characteristic based on IEC 255-3 is used for the relay is
Cengiz Hark, Seyyarer, Abubekir, Abubekir Seyyarer, Ali Karci, YEROĞLU, CELALEDDİN, Celaleddin Yeroglu, KARCI, ALİ, Akdag, Ozan, Hark, Cengiz, Ozan Akdag   +9 more
core   +1 more source

Advanced Clustering and Optimisation Techniques for Adaptive Protection in AC Microgrids With Hardware‐in‐the‐Loop Testing

Energy Science &Engineering, Volume 14, Issue 1, Page 377-398, January 2026.
Standard and proposed non‐standard OCR characteristics. ABSTRACT This study introduces an advanced adaptive protection approach for AC power systems, designed to address key limitations in current clustering‐based relay coordination methods. Using K‐means, hierarchical, and spectral clustering techniques, the proposed scheme classifies grid operating ...
Feras Alasali, Naser El‐Naily, Mohamed Salem, Hassen Loukil, Haytham Y. Mustafa, Abdelaziz Salah Saidi, William Holderbaum   +6 more
wiley   +1 more source

Optimal Coordination of Standard and Non-Standard Direction Overcurrent Relays Using an Improved Moth-Flame Optimization

IEEE Access, 2020
In this paper, an efficient optimization technique, called improved moth-flame optimization (IMFO) is proposed to improve the performance of conventional Moth-flame optimization (MFO).
Ahmed Korashy, Salah Kamel, Thamer Alquthami, Francisco Jurado   +3 more
doaj   +1 more source

An Optimized Adaptive Protection Scheme for Numerical and Directional Overcurrent Relay Coordination Using Harris Hawk Optimization

Energies, 2021
The relay coordination problem is of dire importance as it is critical to isolate the faulty portion in a timely way and thus ensure electrical network security and reliability.
Muhammad Irfan, Abdul Wadood, Tahir Khurshaid, Bakht Muhammad Khan, Ki-Chai Kim, Seung-Ryle Oh, Sang-Bong Rhee   +6 more
doaj   +1 more source

Adaptive Protection Coordination for Microgrids Using Dual‐Setting Directional Overcurrent Relays: A Real‐Time HIL Validation Approach

IET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.
This research presents a robust protection coordination strategy using dual‐setting directional overcurrent relays (DS‐DOCRs) and a novel optimisation approach to address challenges in adaptive protection. A modified objective function, incorporating primary and backup relay operating times along with coordination time intervals (CTIs), is designed to ...
Oussama Merabet, Aissa Kheldoun, Aidil Azwin Zainul Abidin, Saad Mekhilef, Nima Khosravi   +4 more
wiley   +1 more source

Optimal Coordination of Directional Overcurrent Relays Using Bacteria Foraging Algorithm [PDF]

, 2016
557-561Optimal setting in relay coordination of Directional overcurrent relay (DOCR) is a major challenge for protection engineers. This paper throws light on the application of Bacteria Foraging Algorithm (BFA) in solving problems related to ...
Sinha, N, Adhikari, S
core  

Mitigating the impact of distributed generation on directional overcurrent relay coordination by adaptive protection scheme

, 2016
Distributed Generation (DG) brought new challenges for protection engineers since standard relay settings of traditional system may no longer function correctly under the new conditions of DG.
Leonowicz, Zbigniew M., Luigi Martirano, Enriquez, Arturo Conde, Meng Yen Shih, MARTIRANO, Luigi, Arturo Conde Enriquez, Shih, Meng Yen, Zbigniew M. Leonowicz   +7 more
core   +1 more source

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
doaj   +1 more source

Multi‐point‐line Grounding Fault Section Identification in Urban Distribution Networks by Using Coordinated Multi‐Source Data

IET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.
A multi‐source data collaborative fault section identification method for high fault‐tolerant distribution networks is proposed. The method constructs a robust mixed‐integer linear programming cooperative model by integrating zero‐sequence current direction features and fault indicator alarm signals.
Wangqing Mao, Hangyu Zhao, Xiuru Wang, Jian Sun, Rao Fu, Yuanming Zhang   +5 more
wiley   +1 more source

Optimal coordination of overcurrent relay protection using evolutionary programming / Noor Shah Rizal Abdul Manap [PDF]

, 2018
Protection of distribution system is one of the major significant elements in power systems. Overcurrent relay is one of most commonly used protective relays and commonly used for the protection of ring and radial sub transmission systems, and ...
Noor Shah Rizal, Abdul Manap
core   +2 more sources