Results 11 to 20 of about 80,021 (260)

Numerical Modeling of Space–Time Characteristics of Plasma Initialization in a Secondary Arc

open access: yesEnergies, 2019
A numerical model based on the finite element simulation software COMSOL was developed to investigate the secondary arc that can limit the success of single-phase auto-reclosure solutions to the single-phase-to-ground fault.
Jinsong Li   +4 more
doaj   +1 more source

Secondary Arc Extinction in Extra High Voltage Systems Using Grounding Switches

open access: yesDiyala Journal of Engineering Sciences, 2014
Long Extra High Voltage (EHV) transmission systems tend to bring a pronounced state of secondary arcing. Therefore, an essential pre-requisite for single-phase-switching application, is the possibility and speed of secondary arc final extinction during ...
Qais M. Alias, Wafaa F. Tobia
doaj   +1 more source

Influence of Hybrid Reactive Power Compensation on the Secondary Arc of Ultra-High-Voltage Transmission Lines (May 2018)

open access: yesIEEE Access, 2018
Hybrid reactive power compensation (HRPC) which consists of series compensation and a stepped-controlled shunt reactor will see use in China's future ultra-high-voltage (UHV) transmission system. As a result, some new characteristics of the secondary arc
Hongshun Liu   +6 more
doaj   +1 more source

Comparative investigation on ingot evolution and product quality under different arc distributions during vacuum arc remelting process

open access: yesJournal of Materials Research and Technology, 2022
The arc characteristics especially the arc distribution of the vacuum arc remelting (VAR) process are closely related to the ingot evolution and consequently the final product quality.
Jiajun Cui   +5 more
doaj   +1 more source

Modelling of Secondary Arc Using EMTP-RV [PDF]

open access: yesThe Transactions of The Korean Institute of Electrical Engineers, 2012
Most of faults occurred in transmission lines are single-phase to ground faults and transient faults. Single-phase auto reclosing is an appropriate scheme to maintain the system stability and restore the system effectively when those faults are occurred.
Yun-Sik Oh   +3 more
openaire   +1 more source

Structural relation matching: an algorithm to identify structural patterns into RNAs and their interactions

open access: yesJournal of Integrative Bioinformatics, 2021
RNA molecules play crucial roles in various biological processes. Their three-dimensional configurations determine the functions and, in turn, influences the interaction with other molecules.
Quadrini Michela
doaj   +1 more source

Interpretation of parabolic arcs in pulsar secondary spectra [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2004
12 pages, 9 figures, submitted to ...
Walker, Mark   +3 more
openaire   +2 more sources

Effect of secondary peak temperature on microstructure and toughness in ICCGHAZ of laser-arc hybrid welded X100 pipeline steel joints

open access: yesJournal of Materials Research and Technology, 2020
Intercritically reheat-coarse grained heat-affected zone (ICCGHAZ), as a brittle zone in double-pass welding, its toughness is affected by the peak temperature of the secondary thermal cycle.
Xiaonan Qi   +6 more
doaj   +1 more source

A New Approach to the Study of Multi-Pass Welds–Microstructure and Properties of Welded 20-mm-Thick Superduplex Stainless Steel

open access: yesApplied Sciences, 2019
Type 2507 superduplex stainless steel 20 mm in thickness was multi-pass-welded with Gas Metal Arc Welding (GMAW) and Flux-Cored Arc Welding (FCAW) processes. Recommended and higher arc energies and inter-pass temperatures were used.
Maria Asuncion Valiente Bermejo   +3 more
doaj   +1 more source

Determination of Auto Reclose Scheme by Assessing Multi Parameters

open access: yesIEEE Access
This article proposes a method for determining the optimal reclose scheme in power systems. The proposed approach involves analyzing multiple parameters such as the voltage and phase angle difference between buses, critical clearing time (CCT) of the ...
Nanang Hariyanto   +3 more
doaj   +1 more source

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