Results 41 to 50 of about 2,378 (215)

Kullback–Leibler Divergence‐Based Fault Detection Scheme for 100% Inverter Interfaced Autonomous Microgrids

Energy Science &Engineering, Volume 13, Issue 6, Page 2891-2900, June 2025.
ABSTRACT The development of a dependable and secure protection system is critical for further integration of renewable energy sources into electrical energy systems. To address the bidirectional power flow and limited fault current contribution of 100% inverter‐based microgrids, this article presents a differential fault detection scheme (DFDI) based ...
Ali Mallahi, Iman Sadeghkhani
wiley   +1 more source

Design of an intelligent system for comprehensive validation of protection settings [PDF]

, 2016
The reliable operation of protection systems depends on the correct settings of protective devices. The complexity of power networks and the large number of protection setting parameters make it extremely challenging to comprehensively validate the ...
Booth, C., Catterson, V., Dysko, Adam, Hong, Q.   +3 more
core   +1 more source

Research on the Adaptive Protection Method for Distribution Networks With Inverter‐Type Distributed Power Supplies: Based on Short‐Circuit Impedance Calculation

Engineering Reports, Volume 7, Issue 4, April 2025.
If the linear node voltage equation set obtained from the faulty composite sequential network is solved directly by linear transformation, it is not possible to accurately calculate and obtain the fault current and the voltage at the merging point of IIDG.
Zhuoran Song, Zhanjun Li, Yongji Tong, Wenlei Dou, Hongbo Zhu, Tao Jiang   +5 more
wiley   +1 more source

Improved Adaptive Protection Scheme Based Combined Centralized/Decentralized Communications for Power Systems Equipped With Distributed Generation

IEEE Access, 2022
Recently, numerical relays with communication capabilities have been employed to provide adaptive solutions for Distributed Generations (DGs) protection issues.
Alaa Hmam El-Hamrawy, Ahmed Abdel Mordi Ebrahiem, Ashraf Ibrahim Megahed   +2 more
doaj   +1 more source

Advanced voltage relay design for distance relay coordination in power networks equipped with low‐inertia areas

IET Generation, Transmission &Distribution, Volume 19, Issue 1, January/December 2025.
DR and OCR mis‐coordination challenges under the impact of DG. Abstract In modern power systems with high levels of distributed generation (DG), traditional protection schemes face challenges in ensuring reliable and efficient fault detection due to the complexities introduced by DG, particularly low‐inertia sources such as wind power.
Feras Alasali, Naser El‐Naily, Haytham Y. Mustafa, Hassen Loukil, Saad M. Saad, Abdelaziz Salah Saidi, William Holderbaum   +6 more
wiley   +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, Shady S. Refaat   +3 more
doaj   +1 more source

Harmonic Dual-Setting Directional Overcurrent Protection for Inverter-Based Islanded Microgrids

IEEE Access, 2023
Limited fault currents in inverter-interfaced islanded microgrids impose immense challenges on conventional overcurrent protection schemes. This paper proposes a sensitive and selective protection scheme for islanded microgrids using a third harmonic ...
Talal Elemamali Sati, Maher A. Azzouz, Mostafa F. Shaaban   +2 more
doaj   +1 more source

A novel protection scheme for an LVDC distribution network with reduced fault levels [PDF]

, 2017
Low Voltage Direct Current (LVDC) distribution is one of the new promising technologies that have the potential to accelerate the wider integration of distributed renewables.
Burt, Graeme, Emhemed, Abdullah, Wang, Dong   +2 more
core   +1 more source

Impacts of grid‐forming inverters on distance protection

IET Generation, Transmission &Distribution, Volume 19, Issue 1, January/December 2025.
This paper investigates the impacts of grid‐forming (GFM) inverters on distance protection, with the main objective of providing an improved understanding of the topic. Important interoperability issues are highlighted with simulation results and elaborated upon based on the theory behind the distance relay model and the behaviours of GFM inverters ...
Henrik Johansson, Qianli Xing, Nathaniel Taylor, Xiongfei Wang   +3 more
wiley   +1 more source

Impact analysis of flexible interconnection devices in distribution networks and a setting calculation method for overcurrent protection scheme

IET Generation, Transmission &Distribution, Volume 19, Issue 1, January/December 2025.
This article examines the impact of FIDs on existing current protection arrangements of flexible interconnected distribution network. We propose a method for calculating the overcurrent protection setting, ensuring the stability of urban power systems.
Ningyi He, Zhichang Yuan, Peiqian Guo, Hongtao Li, Zijin Li, Bo Wang, Chen Wang, Miaoyi Xiang   +7 more
wiley   +1 more source