Results 51 to 60 of about 182 (135)

A Bi‐GRU–Based Protection Scheme for Reliable Fault Identification in Series‐Compensated Transmission Lines

IET Smart Grid, Volume 9, Issue 1, January/December 2026.
This paper presents a deep Bidirectional Gated Recurrent Unit (Bi‐GRU)‐based protection scheme for series‐compensated transmission lines using only local voltage and current measurements. The proposed method extracts fundamental‐frequency phasors through discrete Fourier transform and is trained on a comprehensive dataset covering various compensation ...
Majid Khezerloo, Mojtaba Beiraghi, Reza Ghanizadeh   +2 more
wiley   +1 more source

An Improved Communication-Free Dual Characteristic Over Current-Based Protection Scheme for AC Microgrids

International Transactions on Electrical Energy Systems
The entry of distributed generation causes the network to become complicated, and as a result, the protection coordination between the network equipment is lost.
Hossein Mohammadi Panah, Behrooz Zaker, Haidar Samet   +2 more
doaj   +1 more source

Ant Lion Optimizer for Optimal Coordination of DOC Relays in Distribution Systems Containing DGs

IEEE Access, 2018
Traditionally, the distribution system is typically radial and the protection system has been designed for this purpose. After increasing the distributed generations (DG) in distribution systems, the direction of the electrical power flow and the short ...
A. Y. Hatata, Alnufaie Lafi
doaj   +1 more source

Optimal Linear Protection Scheme of Inverter‐Based Distributed Energy Resources: Meeting Fault‐Ride‐Through Requirement

International Journal of Energy Research, Volume 2026, Issue 1, 2026.
This paper presents a new two‐stage protection strategy for active distribution networks that not only addresses selectivity constraints along protected lines but also incorporates fault‐ride‐through (FRT) requirements of inverter‐based distributed energy resources (IBDERs). The proposed coordination strategy (PCS), which distinguishes it from previous
Amin Yazdaninejadi, Hossein Ebrahimi, Sajjad Golshannavaz, Zhiyi Li, Rajashik Paul   +4 more
wiley   +1 more source

Real‐Time Fault Detection and Classification in Active MV Distribution Networks Using Compact Feature–Based Ensemble Learning Under DG Infeed With Field Validation on the Moroccan Grid

International Transactions on Electrical Energy Systems, Volume 2026, Issue 1, 2026.
Reliable fault diagnosis in medium‐voltage distribution networks remains difficult due to measurement noise, variability in operating conditions, and the limited computational resources typically available in protection hardware. To address these constraints, the present paper introduces a compact and relay‐compatible framework that integrates ...
Saad Sarih, Samira Chabaa, Zakaria Boulghasoul, Abdelhadi ElBacha, Abdelouahed Tajer, Anamika Yadav   +5 more
wiley   +1 more source

A Comprehensive Directional Overcurrent Protection Scheme for LVDC Microgrids Using Harmonic Voltage Injection: Analysis and Case Studies

IEEE Access
Low voltage DC microgrids represent a highly adaptable approach to bringing renewable power generation closer to consumers, however their large, bidirectional fault currents and quick settling times complicate traditional protection methods.
Christopher James Nardone, Talal Elemamali Sati, Maher A. Azzouz   +2 more
doaj   +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

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

Rekonfigurasi Relai Proteksi setelah Penambahan Pembangkit Tersebar pada Jaringan Distribusi

Jurnal Nasional Teknik Elektro, 2017
Installation of distributed generation (DG) on a distribution network can change the direction of electrical current during normal and faulted condition. This change can cause failures to operate of the existing relay protection.
Adrianti Adrianti, Nurul Mukhlisiah
doaj   +1 more source

Optimal Coordination of Distance and Directional Overcurrent Relays Considering Different Network Topologies

Iranian Journal of Electrical and Electronic Engineering, 2015
Most studies in relay coordination have focused solely on coordination of overcurrent relays while distance relays are used as the main protection of transmission lines.
Y. Damchi, J. Sadeh, H. Rajabi Mashhadi
doaj