Results 31 to 40 of about 2,828,187 (290)

Novel Fault Protection Method for Flexible DC Power Systems

Energies
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, Qing Duan, Caihong Zhao, Haoqing Wang, Guanglin Sha, Jian Gao, Yong Li, Shuiliang Zhou   +7 more
doaj   +1 more source

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

Advances 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

Cryptography, 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

Superplastic nanofibrous slip zones control seismogenic fault friction [PDF]

, 2014
Understanding the internal mechanisms controlling fault friction is crucial for understanding seismogenic slip on active faults. Displacement in such fault zones is frequently localized on highly reflective (mirrorlike) slip surfaces, coated with thin ...
Structural geology and EM, Plümper, Oliver, Sub Biomolecular Imaging, ISES: Frictional behaviour of calcite-rich fault rocks & implications for seismicity in carbonate terrains, Spiers, Christopher J., Verberne, Berend A., de Winter, D.A. Matthijs, Experimental rock deformation, Sub Cryo - EM   +8 more
core   +1 more source

Bispectrum of stator phase current for fault detection of induction motor [PDF]

, 2009
A number of research studies has shown that faults in a stator or rotor generally show sideband frequencies around the mains frequency (50 Hz) and at higher harmonics in the spectrum of the Motor Current Signature Analysis (MCSA).
Gu, Fengshou, Ball, Andrew, Gu, Fengshu, Sinha, Jyoti K.; id_orcid, Treetrong, Juggrapong, Sinha, Jyoti K.   +5 more
core   +1 more source

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

Energies
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

Deep Learning-Based Classification of Transformer Inrush and Fault Currents Using a Hybrid Self-Organizing Map and CNN Model

Energies
Accurate classification between magnetizing inrush currents and internal faults is essential for reliable transformer protection and stable power system operation. Because their transient waveforms are so similar, conventional differential protection and
Heungseok Lee, Sang-Hee Kang, Soon-Ryul Nam   +2 more
doaj   +1 more source

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

Scientific 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, Shenghua Cui, Xiangjun Pei, Ling Zhu, Hui Wang, Qingwen Yang   +5 more
doaj   +1 more source

Fault Diagnosis for Modular Multilevel Converter Switching Devices via Multimodal Attention Fusion

IEEE Access, 2023
Modular multilevel converters (MMCs) have been widely applied in high voltage direct current (HVDC) transmission project, and security is their fundamental issue.
Longzhang Ke, Guozhen Hu, Yuqing Yang, Yi Liu   +3 more
doaj   +1 more source

Thermal Image Enhancement using Bi-dimensional Empirical Mode Decomposition in Combination with Relevance Vector Machine for Rotating Machinery Fault Diagnosis [PDF]

, 2009
In this study, a novel fault diagnosis system for rotating machinery using thermal imaging is proposed. This system consists of bi-dimensional empirical mode decomposition (BEMD) for image enhancement, a generalized discriminant analysis (GDA) for ...
Yang, Bo-Suk, Gu, Fengshou, Ball, Andrew, Al-Ani, A, Yang, Bo Suk, Tran, Van Tung, Al-Jumaily, A, Khushaba, RN   +7 more
core   +1 more source