Results 41 to 50 of about 2,500 (192)

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

Physics‐Informed Graph Reinforcement Learning for Hosting Capacity Maximization in Distribution Networks

IET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.
This paper proposes a physics‐informed graph reinforcement learning (PI‐GRL) framework that combines graph neural networks (GNNs) with deep reinforcement learning and physics‐based regularization for unified HC maximization. The distribution network is modelled as a heterogeneous graph with typed nodes and edges, processed by a multi‐relational GNN ...
Aamir Nawaz, Aftab Ahmed Almani, Rizwan Ul Hassan, Zahid Javid, William Holderbaum   +4 more
wiley   +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

Optimal Coordination of Directional Overcurrent Relays Using PSO-TVAC

Energy Procedia, 2015
AbstractThis paper presents an efficient variant of particle swarm optimization (PSO) algorithm named Time Varying Acceleration Coefficients (PSO-TVAC) to solve the optimal coordination of directional overcurrent relays (DOCRs) in a practical power system, considering the optimum pickup current (Ip) as discrete parameter and time dial setting (TDS) as ...
Mancer, Nabil., Mahdad, B., Srairi, K., Hamed, M., Hadji, B.   +4 more
openaire   +1 more source

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

An Intelligent Machine Learning‐Based Algorithm to Adapt the Behaviour of Differential Protection During Sub‐Synchronous Resonance in Smart Grids

IET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.
The smart grid requires self‐healing protection; therefore, this paper proposes an intelligent machine learning‐based algorithm capable of adapting the behaviour of transformer differential protection during SSR. ABSTRACT The smart grid incorporates renewable energy generation sources, such as doubly fed induction generators in wind farms and ...
Salman Rezaei
wiley   +1 more source

Performance comparison of PSO, HGSO, and DE optimization techniques for computation of directional overcurrent relay coordination in power systems

Engineering review
Directional over current relays (DOCRs) have been in use for ensuring the complete protection of the power system network. However, the modern power system is getting complex with the increased penetration of Renewable Energy Source (RES) based ...
Nidhi R, Biman Kumar Saha Roy, Debasree Saha, M. Mukherjee   +3 more
semanticscholar   +1 more source

Review of Fault Detection Methods in Microgrids: From Conventional to Innovative Perspective

IET Renewable Power Generation, Volume 20, Issue 1, January/December 2026.
The increasing global energy demand and the limitations of conventional resources have intensified the need for flexible, reliable, and sustainable energy solutions, highlighting the importance of microgrids. This study presents a comprehensive review of fault detection and management methods in microgrids, comparing traditional, signal processing ...
Mehmet Hasir, Alper Nabi Akpolat, Kürşat Ayan   +2 more
wiley   +1 more source

Communication-less adaptive directional overcurrent protection strategy considering islanded mode detection in active distribution networks

Results in Engineering, 2023
The integration of distributed energy resources (DERs) in electric distribution networks originates the Active Distribution Networks (ADNs). The presence of DERs introduces challenges to conventional protection schemes due to bidirectional power flows ...
J. Orozco-Álvarez, A. Herrera-Orozco, J. Mora-Flórez   +2 more
doaj   +1 more source

Comprehensive Study of DC Microgrids Protection: Challenges, Cutting‐Edge Techniques, Machine‐Learning‐Driven Solutions

IET Renewable Power Generation, Volume 20, Issue 1, January/December 2026.
ABSTRACT This paper provides a comprehensive examination of the evolving protection challenges within DC microgrids powered by renewable resources and energy storage systems. It begins by delineating the methodological framework of conventional protection, critically assessing schemes based on current, voltage, and impedance to expose their limitations
Mohamed Elmadawy, Ahmed Shahin, Abdelhady Ghanem, Almoataz Y. Abdelaziz, Fujin Deng, Ahmad S. Ayub, Abdalbaset Mnider, Sayed Abulanwar   +7 more
wiley   +1 more source