Results 31 to 40 of about 247 (173)

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

Multi‐point‐line Grounding Fault Section Identification in Urban Distribution Networks by Using Coordinated Multi‐Source Data

IET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.
A multi‐source data collaborative fault section identification method for high fault‐tolerant distribution networks is proposed. The method constructs a robust mixed‐integer linear programming cooperative model by integrating zero‐sequence current direction features and fault indicator alarm signals.
Wangqing Mao, Hangyu Zhao, Xiuru Wang, Jian Sun, Rao Fu, Yuanming Zhang   +5 more
wiley   +1 more source

Directional Overcurrent Relays Coordination Problems in Distributed Generation Systems

Energies, 2017
This paper proposes a new approach to the distributed generation system protection coordination based on directional overcurrent protections with inverse-time characteristics.
Jakub Ehrenberger, Jan Švec
doaj   +1 more source

Implementation of Optimal Protection Coordination for Microgrids with Distributed Generations Using Quaternary Protection Scheme

Journal of Electrical and Computer Engineering, 2020
The flexible operation of microgrids, along with the availability of distributed generation (DG) units, causes a variety of changes in short-circuit current levels, magnitudes, and directions, which has undesirable effects on the operation of protection ...
Panida Thararak, Peerapol Jirapong
doaj   +1 more source

Microgrid Protection through Adaptive Overcurrent Relay Coordination

Electricity, 2021
The inclusion of distributed energy resources (DER) in Microgrids (MGs) comes at the expense of increased changes in current direction and magnitude.
Haneen Bawayan, Mohamed Younis
doaj   +1 more source

Short‐Circuit Current Analysis of Grid‐Connected Inverters: An Analytical Approach Using Hardware Natural Response and Control Superposition

IET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.
This paper proposes a closed‐form analytical framework predicting the sub‐cycle transient peak currents of grid‐following and grid‐forming inverters during short‐circuit faults. The method uniquely decouples the fault current into a hardware natural response and a control‐commanded response, enabling rapid estimation of instantaneous initial peaks ...
Ziqian Zhang, Robert Schuerhuber
wiley   +1 more source

Fast Protection Scheme for Active Distribution Networks: Breaking Chains by Utilizing Auxiliary Relays

Journal of Modern Power Systems and Clean Energy, 2020
Due to the swift expansion and the deployment of distributed generation, protection systems of active distribution networks are more expected to be fast.
Amin Yazdaninejadi, Daryoush Nazarpour, Vahid Talavat   +2 more
doaj   +1 more source

5G for IEC 61850 Smart Grid Communications: Mapping Technology Enablers and Network Slicing Performance Insights

IET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.
This paper maps key 5G technology enablers, such as carrier aggregation, dual connectivity, and network slicing (NS), to IEC 61850 smart grid communication traffic types and experimentally evaluates their performance in commercial 5G networks. Results show that NS enhances reliability for grid protection and automation but still falls short of ultra ...
Petra Raussi, Heli Kokkoniemi‐Tarkkanen, Seppo Horsmanheimo, Lotta Tuomimäki, Petri Hovila, Anna Kulmala   +5 more
wiley   +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 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