Results 31 to 40 of about 77 (68)

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

Decentralised Zone‐Based Protection of Radial Smart Grids Using a Multi‐Agent Scheme

IET Smart Grid, Volume 9, Issue 1, January/December 2026.
A decentralised zone‐based protection is proposed where a multi‐agent scheme is used to manage faults using local agents assigned to each zone of smart grids. ABSTRACT This paper proposes a multi‐agent, zone‐based protection scheme for modern radial smart distribution grids with high penetration of Distributed Energy Resources (DERs).
Hamed Rezapour, Sadegh Jamali, Pierluigi Siano, Josep M. Guerrero   +3 more
wiley   +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

A Novel Reactive Current Injection (RCI) Control for Microgrid Protection with Inverter Based Distributed Generation (IBDG)

Energies, 2019
As the development of renewable distributed generations (DGs) is growing rapidly, the autonomous self-healing microgrid had emerged as an effective solution for integrating renewable DGs in the distribution networks.
Kheng Heong Oon, ChiaKwang Tan, A.H.A. Bakar, Hang Seng Che, Jorinda Y.R. Wong   +4 more
doaj   +1 more source

Optimal Protection Planning and Coordination in Microgrids With SDGs, SFCLs, and OCR Using WOA

International Journal of Energy Research, Volume 2025, Issue 1, 2025.
One of the critical challenges in power system protection is ensuring proper relay coordination. To achieve optimal coordination of protection systems and ensure security, fast cleaning, and selection of types of faults is a necessary priority. This priority, when hosting synchronous distributed generations (SDGs), although technical factors like power
Mohammad Hassan Tanha, Majid Gandomkar, Javad Nikoukar, Ayman Al-Quraan   +3 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, Volume 2025, Issue 1, 2025.
The entry of distributed generation causes the network to become complicated, and as a result, the protection coordination between the network equipment is lost. In previous studies, three decision variables were considered for each directional overcurrent relay: time dial setting in the main mode, time dial setting in the backup mode, and pickup ...
Hossein Mohammadi Panah, Behrooz Zaker, Haidar Samet, Paulo Moisés Almeida Costa   +3 more
wiley   +1 more source

Optimal directional overcurrent relay settings for stable microgrids with synchronous and inverter-based resources

International Journal of Electrical Power & Energy Systems
Microgrid (MG) is a small-scale system that offers on-site energy production and storage capabilities, allowing for the seamless integration of different technology-driven distributed energy resources (DERs), including inverter-based and synchronous ...
Abdelfattah A. Eladl, Ahmed N. Sheta, M. Elgamal, Juan C. Vasquez, Bishoy E. Sedhom   +4 more
doaj   +1 more source

Optimal overcurrent relay coordination: Balancing costs, time performance and generator placement in fault current limiter optimization

IET Generation, Transmission &Distribution, Volume 18, Issue 7, Page 1431-1448, April 2024.
This work investigates FCL cost minimization through the placement of the synchronous generator location within the network. This will be achieved by implementing JSO algorithm. Restoring the coordination through the FCLs without changing the directional over current relays settings is one goal of this work.
Ribin Mohamedshareef, Mehdi Abapour, Seyed Hossein Hosseini, Heresh Seyedi   +3 more
wiley   +1 more source

The recent development of protection coordination schemes based on inverse of AC microgrid: A review

IET Generation, Transmission &Distribution, Volume 18, Issue 1, Page 1-23, January 2024.
The traditional OCR faced many protection performance challenges and miss‐coordination events due to the high DG penetration. Therefore, the main goal of using the voltage value that the relay discovers is to offer reliable relay coordination under high DG penetration.
Feras Alasali, Haytham Mustafa, Abdelaziz Salah Saidi, Naser El‐Naily, Salima Abeid, William Holderbaum, Emad Omran, Saad M. Saad   +7 more
wiley   +1 more source

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, Suzana Pil Ramli, Nurulafiqah Nadzirah Mansor, Muhamad Usama, Hazlie Mokhlis, Hadi Suyono, Rini Nur Hasanah   +6 more
doaj   +1 more source