Results 41 to 50 of about 1,625 (202)

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   +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

International White Book on DER Protection : Review and Testing Procedures [PDF]

, 2011
This white book provides an insight into the issues surrounding the impact of increasing levels of DER on the generator and network protection and the resulting necessary improvements in protection testing practices.
Abdulhadi, Ibrahim Faiek, Booth, Campbell, Burt, Graeme, Coffele, Federico, Crolla, Paul, Dysko, Adam, Li, Xinyao, Schafer, Nils   +7 more
core  

Grid Fragility, Blackouts, and Control Co‐Design Solutions

Advanced Control for Applications, Volume 7, Issue 3, September 2025.
Hierarchical grid control and GRADIENTS categories. ABSTRACT The grid is undergoing a large‐scale transformation, including a significant reduction of synchronous generators, a high penetration of inverter‐based resources and renewables, substantial demand growth, new extra‐large loads, aging infrastructure and a concerning vulnerability to ...
Mario Garcia‐Sanz, Mirjana Marden, Igor Cvetkovic, HyungSeon Oh, Ethan LoCicero, Saba Khalid   +5 more
wiley   +1 more source

Protection coordination of directional over current relay with distributed generation [PDF]

, 2022
The present study is focussed on a comparative analysis of different meta-heuristic optimization approaches for directional overcurrent relay (DOCRs) coordination which has been discussed and presented in the literature.
Chandel, Aseem, Gupta, Santosh Kumar, Kumar, Vikash, Ranjan, Mrinal, Singh, Smriti, Tripathi, Jayant Mani, Yadav, Shivam   +6 more
core   +3 more sources

Research on the Adaptive Protection Method for Distribution Networks With Inverter‐Type Distributed Power Supplies: Based on Short‐Circuit Impedance Calculation

Engineering Reports, Volume 7, Issue 4, April 2025.
If the linear node voltage equation set obtained from the faulty composite sequential network is solved directly by linear transformation, it is not possible to accurately calculate and obtain the fault current and the voltage at the merging point of IIDG.
Zhuoran Song, Zhanjun Li, Yongji Tong, Wenlei Dou, Hongbo Zhu, Tao Jiang   +5 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 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

An adaptive overcurrent protection scheme for distribution networks [PDF]

, 2015
Distribution networks are evolving toward the vision of smart grids, with increasing penetration of distributed generation (DG), introduction of active network management (ANM), and potentially islanded modes of operation.
Booth, C., Coffele, F., Dyśko, A.
core   +1 more source

Advanced voltage relay design for distance relay coordination in power networks equipped with low‐inertia areas

IET Generation, Transmission &Distribution, Volume 19, Issue 1, January/December 2025.
DR and OCR mis‐coordination challenges under the impact of DG. Abstract In modern power systems with high levels of distributed generation (DG), traditional protection schemes face challenges in ensuring reliable and efficient fault detection due to the complexities introduced by DG, particularly low‐inertia sources such as wind power.
Feras Alasali, Naser El‐Naily, Haytham Y. Mustafa, Hassen Loukil, Saad M. Saad, Abdelaziz Salah Saidi, William Holderbaum   +6 more
wiley   +1 more source