Results 11 to 20 of about 792,099 (261)
PoliGridRele arus lebih adalah perangkat yang penting dalam sistem proteksi untuk melindungi peralatan listrik dari kerusakan akibat arus lebih yang berlebihan. Tujuan dari penelitian ini adalah untuk merancang dan mengimplementasikan sebuah sistem rele arus lebih yang dapat mendeteksi dan menanggulangi arus lebih dengan prinsip proteksi inverse time, serta ...
Becky Arya Wijaya +3 more
openaire +2 more sources
Optimal Coordination of Directional Overcurrent Relays Using Hybrid Firefly–Genetic Algorithm
Energies, 2023 The application of directional overcurrent relays (DOCRs) plays an important role in protecting power systems and ensuring their safe, reliable, and efficient operation.
Tareq Foqha +6 more
doaj +2 more sources
Investigation of Overcurrent Relay Tripping Time Protection Using PSCAD Software
International Journal of Electrical Engineering and Applied Sciences, 2023 This paper studied the modelling of 132/33/11kV overcurrent protection by using PSCAD software. The objective of this project is to compare between IEC 60255 Standard and IEEE C37.112 Standard overcurrent relay response time in the event of fault ...
Mohd Hendra Hairi +3 more
doaj +2 more sources
EnergiesGuaranteeing the effective coordination of directional overcurrent relays (DOCRs) within microgrids (MGs) is a complex nonlinear problem due to bidirectional power flows, varying fault current levels, and the need for adaptive operation across multiple ...
León F. Serna-Montoya +4 more
doaj +2 more sources
EnergiesIn electrical power systems, ensuring a reliable, precise, and efficient relay strategy is crucial for safe and trustworthy operation, especially in multi-loop distribution systems.
Bakht Muhammad Khan +6 more
doaj +2 more sources
Scientific ReportsDirectional Overcurrent Relay (DOCR) coordination has become an increasingly important problem in modern distribution networks, where growing system complexity and high fault-current variability demand fast and highly selective protection strategies ...
İbrahim Arslanoğlu +2 more
doaj +2 more sources
EnergiesProtecting AC microgrids (MGs) is a challenging task due to their dual operating modes—grid-connected and islanded—which cause sudden variations in fault currents. Traditional protection methods may no longer ensure network security.
León F. Serna-Montoya +3 more
doaj +2 more sources
A new Lagrange multiplier approach for constructing structure preserving schemes, I. Positivity preserving [PDF]
Computer Methods in Applied Mechanics and Engineering, 2021 We propose a new Lagrange multiplier approach to construct positivity preserving schemes for parabolic type equations. The new approach introduces a space-time Lagrange multiplier to enforce the positivity with the Karush-Kuhn-Tucker (KKT) conditions. We
Q. Cheng, Jie Shen
semanticscholar +1 more source
Comparisons between Fourier and STFT multipliers: The smoothing effect of the short-time Fourier transform [PDF]
Journal of Mathematical Analysis and Applications, 2022 We study the connection between STFT multipliers $A^{g_1,g_2}_{1\otimes m}$ having windows $g_1,g_2$, symbols $a(x,\omega)=(1\otimes m)(x,\omega)=m(\omega)$, $(x,\omega)\in\mathbb{R}^{2d}$, and the Fourier multipliers $T_{m_2}$ with symbol $m_2$ on ...
P. Balázs +4 more
semanticscholar +1 more source
Protection and Control of Modern Power Systems, 2022 Fault current magnitude in a microgrid depends upon its mode of operation, namely, grid-connected mode or islanded mode. Depending on the type of fault in a given mode, separate protection schemes are generally employed.
R. Tiwari +2 more
semanticscholar +1 more source