Results 31 to 40 of about 36,891 (314)

Waveform dissimilarity factor-based protection for main transformers in wind farms

open access: yesEnergy Reports, 2023
Current differential protection (CDP) is widely used as main protection for transformers due to its high reliability and selectivity. Owing to non-fundamental frequency current, magnetizing inrush and current transformer (CT) saturation, CDP may undergo ...
Yingyu Liang   +3 more
doaj   +1 more source

A Pilot Directional Protection for HVDC Transmission Line Based on Relative Entropy of Wavelet Energy

open access: yesEntropy, 2015
On the basis of analyzing high-voltage direct current (HVDC) transmission system and its fault superimposed circuit, the direction of the fault components of the voltage and the current measured at one end of transmission line is certified to be ...
Sheng Lin   +3 more
doaj   +1 more source

Part I. Slip Behavior of the San Andreas Fault Through Several Earthquake Cycles Part II. A Structural Interpretation of the Aftershock "Cloud" of the 1992 Mw 7.3 Landers Earthquake [PDF]

open access: yes, 2003
Part 1 of this thesis addresses the question of how variable fault slip per event is through time. This question is important, because progress in understanding and forecasting large earthquakes depends critically on precise reconstruction of the ...
Liu, Jing, Jing Liu
core   +1 more source

Research of influence of open-winding faults on properties of brushless permanent magnets motor

open access: yesOpen Physics, 2017
The paper presents an analysis of influence of selected fault states on properties of brushless DC motor with permanent magnets. The subject of study was a BLDC motor designed by the authors for unmanned aerial vehicle hybrid drive.
Bogusz Piotr   +4 more
doaj   +1 more source

Fast single-end line protection method for the meshed multi-terminal HVDC grid

open access: yesThe Journal of Engineering, 2019
In view of the short-circuit fault characteristics, the protection technique of the dc lines limits the development of the modular multi-level converter (MMC)-based HVDC grid in a large extent. This study derives the calculation formulas of the transient
Qiang Huang   +4 more
doaj   +1 more source

Novel Fault Protection Method for Flexible DC Power Systems

open access: yesEnergies
A fault protection method is proposed for flexible direct-current (DC) power systems based on the cosine similarity of currents in current-limiting reactors.
Genqi Chen   +7 more
doaj   +1 more source

Detailed Simulation of Transformer Internal Fault in Power System by Diakoptical Concept

open access: yesAdvances in Electrical and Computer Engineering, 2010
This paper presents a novel method for modeling internal faults in a power transformer. This method uses a distributed computing approach for analysis of internal fault in transient stability (T/S) studies of electrical networks using Diakoptics and ...
KOUHSARI, S. M., KOOCHAKI, A.
doaj   +1 more source

A Fault Attack on the Family of Enocoro Stream Ciphers

open access: yesCryptography, 2021
A differential fault attack framework for the Enocoro family of stream ciphers is presented. We only require that the attacker can reset the internal state and inject a random byte-fault, in a random register, during a known time period.
Julian Danner, Martin Kreuzer
doaj   +1 more source

Deep Learning-Based Algorithm for Internal Fault Detection of Power Transformers during Inrush Current at Distribution Substations

open access: yesEnergies
The reliability and stability of differential protection in power transformers could be threatened by several types of inferences, including magnetizing inrush currents, current transformer saturation, and overexcitation from external faults.
Sopheap Key, Gyu-Won Son, Soon-Ryul Nam
doaj   +1 more source

Shear behavior of bedding fault material on the basal layer of DGB landslide

open access: yesScientific Reports, 2023
Daguangbao (DGB) Landslide (12 × 108 m3) is the largest landslide triggered by the 2008 Ms8.0 Wenchuan Earthquake, in which basal shear failure develops on an interlayer fault at 400 m deep under the ground.
Yufei Liang   +5 more
doaj   +1 more source

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