Results 41 to 50 of about 207,280 (252)

Recent Developments of Directional Overcurrent Relay Coordination in Ring Distribution Network Based on Hybrid Optimization Techniques

IEEE Access
As power distribution systems evolve from conventional radial structures to more complex ring networks, driven by the widespread integration of distributed generation (DG), the challenge of ensuring reliable and effective protection becomes increasingly ...
Annas Alamshah, S. Ramli, N. Mansor, Muhamad Usama, H. Mokhlis, H. Suyono, R. Hasanah   +6 more
semanticscholar   +1 more source

New overcurrent relay coordination method to enhance microgrid protection

IEEE Access, 2021
This paper presents a method to protect microgrids (MGs) through coordination of directional overcurrent relays (DOCRs). The new formulation is subjected to restrictions of pre-established time intervals to guarantee the primary and backup functions of ...
Y. González, A. Conde
semanticscholar   +1 more source

Design and Construction of Inverse Time & Definite Time Overcurrent Relay Based on Arduino Uno

Emitor: Jurnal Teknik Elektro
This system is designed to detect overcurrent faults, then disconnect them from the circuit. In inverse time overcurrent relay, the relay trip time will depend on the magnitude of the fault current.
rizky susilo, Lucianus Handri Gunanto, Ipniansyah Ipniansyah, Abdurrahim Abdurrahim, Toto Nugroho, Gusti Fikri Fadhillah, Muhammad Ary Sandy Saputra   +6 more
doaj   +1 more source

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, S. Refaat   +3 more
semanticscholar   +1 more source

Fault Analysis and Design of a Protection System for a Mesh Power System with a Co-Axial HTS Power Cable

Energies, 2020
The uses of high-temperature superconducting (HTS) cables pose a challenge of power system protection since the impedance of the HTS cable is varied during fault conditions. The protection systems should be designed properly to ensure the reliability and
Thai-Thanh Nguyen, Woon-Gyu Lee, Hak-Man Kim, Hyung Suk Yang   +3 more
doaj   +1 more source

Adaptive Protection for Active Distribution Networks: An Approach Based on Fuses and Relays With Multiple Setting Groups

IEEE Access, 2023
Protection schemes are essential in active distribution networks and microgrids’ reliable, efficient, and flexible operation. However, the protection of these networks presents significant challenges due to operational changes, such as variations ...
Adrian Barranco-Carlos, Cesar Orozco-Henao, Juan Marin-Quintero, Juan Mora-Florez, Andres Herrera-Orozco   +4 more
doaj   +1 more source

Development of overcurrent relay based on wavelet transform for fault detection in transmission line

Scientific Reports
This study proposes a protection relay using a microcontroller to detect and classify faults in transmission lines based on the wavelet transform. An experimental model was constructed from an actual 115 kV transmission system prototype.
S. Ananwattanaporn, Praikanok Lertwanitrot, A. Ngaopitakkul, C. Pothisarn   +3 more
semanticscholar   +1 more source

Enhancing Hydrophobic Stability of Silicone Rubber Insulators Under High‐Voltage Direct Current Stress Through Optimised Nano‐Fumed Silica Surface Area: A Dynamic Drop Test Study

High Voltage, EarlyView.
ABSTRACT The long‐term hydrophobic stability of silicone rubber (SiR) insulators is essential for their reliability in high‐voltage direct current (HVDC) applications. This study investigates the effect of nano‐silica fillers with varying specific surface areas (SSA = 120, 200 and 300 m2/g) and different concentrations of alumina trihydrate (ATH ...
Mahmoud A. Ali, Xingliang Jiang, Samir I. Gadow, Ruta W. Deusdedith   +3 more
wiley   +1 more source

Optimal Coordination of Directional Overcurrent Relays Using PSO-TVAC Considering Series Compensation

Advances in Electrical and Electronic Engineering, 2015
The integration of system compensation such as Series Compensator (SC) into the transmission line makes the coordination of directional overcurrent in a practical power system important and complex.
Nabil Mancer, Belkacem Mahdad, Kamel Srairi   +2 more
doaj   +1 more source

Defense Algorithm Based on Reinforcement Learning and Digital Twin for Distribution Protection Devices Adversarial Samples

Engineering Reports, Volume 8, Issue 6, June 2026.
Power system protection devices are vulnerable to adversarial samples. We propose a digital twin and reinforcement learning framework. It trains a virtual model within safe operational boundaries, reducing the false operation rate to below 3.5%. The model's inference delay is under 10 ms, meeting real‐time protection requirements.
Wei Zhang, Shuai Zhang, Song Wang, Zheran Zheng   +3 more
wiley   +1 more source