Results 61 to 70 of about 226 (183)

Magnetizing Characteristics of Bridge Type Superconducting Fault Current Limiter (SFCL) with Simultaneous Quench Using Flux-Coupling

Energies, 2020
A bridge type superconducting fault current limiter (SFCL) with simultaneous quench using two high-temperature superconducting (HTSC) elements and two coils was fabricated to analyze the fault current limiting characteristics.
Seok-Cheol Ko, Tae-Hee Han, Sung-Hun Lim
doaj   +1 more source

A Modified Loss of Synchronism Condition for Efficient Critical Clearing Time (CCT) Estimation in Transient Stability Analysis

International Transactions on Electrical Energy Systems, Volume 2025, Issue 1, 2025.
Accurate determination of critical clearing time (CCT) remains a fundamental challenge in transient stability analysis of power systems, primarily due to the highly nonlinear and complex dynamic behavior of multimachine networks. Existing methods based on the loss of synchronism (LOS) condition often require intensive numerical iterations and may ...
Ardyono Priyadi, Ony Asrarul Qudsi, Adi Soeprijanto, Naoto Yorino, Arnab Biswas   +4 more
wiley   +1 more source

Recent Advances in Design of Fault Current Limiters for Modern Power Grid Networks: A Critical Review

Journal of Electrical and Computer Engineering, Volume 2025, Issue 1, 2025.
Fault current limiters (FCLs) are essential components in modern power systems for critical protection against the damaging effects of fault currents. With extensive short circuits, routine electrical faults, and an increasing risk of failure due to unprecedented events, the development of different types of FCL has gained attention.
Tamalika Chowdhury, Arpita Bhaumik, Manuela Minetti   +2 more
wiley   +1 more source

Presaturated iron‐core fault current limiters for MVDC power system applications

IET Electric Power Applications, Volume 18, Issue 12, Page 1978-1990, December 2024.
This paper presents design and dynamic performance investigation of a 25 kV full‐scale, modular topology (arranged on the sides of a regular hexagon), medium voltage direct current (MVDC) permanent magnet (PM) biased presaturated fault current limiter (PMFCL).
Ibrahim A. Metwally, Mohamed Eladawy
wiley   +1 more source

Modeling the limiting performance of resistive superconductor fault current limiters for 2G HTS tape

Firat University Journal of Experimental and Computational Engineering, 2022
Fault currents in power systems force valuable power system elements thermally, electro-dynamically and electromagnetically. Due to the increase in fault current levels, the installation of components resistant to fault currents and the damage of these ...
Muhsin Tunay Gençoğlu, Buğra Yılmaz
doaj  

Sources and Sinks of N in Ecosystem Solutions Along the Water Path Through a Tropical Montane Forest in Ecuador Assessed With δ15N Values of Total Dissolved Nitrogen

Journal of Geophysical Research: Biogeosciences, Volume 129, Issue 10, October 2024.
Abstract The globally increasing reactive N richness affects even remote ecosystems such as the tropical montane forests in Ecuador. We tested whether the δ15N values of total dissolved N (TDN), measured directly in solution with a TOC‐IRMS, can be used to help elucidate N sources and sinks along the water path and thus might be suitable for ecosystem ...
Pablo Alvarez, Andre Velescu, Kerstin Pierick, Juergen Homeier, Wolfgang Wilcke   +4 more
wiley   +1 more source

A modified synchronverter for a weak grid with virtual power circles‐based PQ decoupling scheme

IET Renewable Power Generation, Volume 18, Issue 14, Page 2723-2736, 26 October 2024.
A VSG is essential for ensuring stability of a power systems with high penetration of renewable energies, weak grid. Its control, however, is challenging due to the coupling of the active and reactive power which thus, requires virtual impedance. This article simplifies what type, kind and magnitude of the virtual impedance required to achieve a ...
Daniel Angelo Kisinga, Peter Makolo, Paul Trodden   +2 more
wiley   +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

Enhancing FRT performance and smoothing output power of DFIG wind farm equipped by SFCL and SMES in a fuzzy framework

Engineering Science and Technology, an International Journal, 2019
Wind farms equipped by Doubly-Fed Induction Generators (DFIG) should have two capabilities so that system operators can efficiently utilizes them. These capabilities include Fault-Ride-Through (FRT) and smoothing the output active power fluctuations ...
Mostafa Sedighizadeh, Hesam Yarmohammadi, Masoud Esmaili   +2 more
doaj   +1 more source

Influence of Shunt Branch on the Current Limiting and Recovery Performance of Variable Resistance SFCL

IEEE Access
With the continuous development of power grid, the high short-circuit threatens the stability of the power system. The short-circuit exceeds the disconnection capacity of the circuit breaker and has a negative impact on the integrity and stability of the
Duanjiao Li, Bin Xiang, Congwei Yao, Qi Zhang, Xiaofeng Pang, Wenxing Sun, Haiyun Tang, Xue Zhang, Zhongbin Yuan, Linglong Cai   +9 more
doaj   +1 more source