Results 21 to 30 of about 28,186 (267)

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

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

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

Probabilistic sensitivity analysis of two suspension bridges in Istanbul, Turkey to near- and far-fault ground motion [PDF]

Natural Hazards and Earth System Sciences, 2012
The aim of this paper is to compare the near-fault and far-fault ground motion effects on the probabilistic sensitivity dynamic responses of two suspension bridges in Istanbul.
Ö. Çavdar
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

Hierarchical Modeling of Carbonate Fault-Controlled Paleokarst Systems: A Case Study of the Ordovician Reservoir in the Tahe Oilfield, Tarim Basin

Frontiers in Earth Science, 2022
As a special type of fracture-cavity carbonate reservoir, fault/fracture-controlled paleokarsts are affected by large strike-slip faults with various storage spaces, irregular geometry, and stochastic spatial distribution, which brings new challenges to ...
Wenbiao Zhang, Wenbiao Zhang, Zhiliang He, Zhiliang He, Taizhong Duan, Meng Li, Huawei Zhao   +6 more
doaj   +1 more source

Crosstalk between the ribosome quality control‐associated E3 ubiquitin ligases LTN1 and RNF10

FEBS Letters, EarlyView.
Loss of the E3 ligase LTN1, the ubiquitin‐like modifier UFM1, or the deubiquitinating enzyme UFSP2 disrupts endoplasmic reticulum–ribosome quality control (ER‐RQC), a pathway that removes stalled ribosomes and faulty proteins. This disruption may trigger a compensatory response to ER‐RQC defects, including increased expression of the E3 ligase RNF10 ...
Yuxi Huang, Satoshi Hashimoto, Sota Ito, Chisato Kikuguchi, Miho Hoshi, Kiyoshi Yamaguchi, Yoichi Furukawa, Toru Suzuki, Toshifumi Inada   +8 more
wiley   +1 more source

A Dual Deep Neural Network Approach for Discriminating Internal Faults and Inrush Currents in Transformers Under CT Saturation

IEEE Access
The dependability and security of transformer differential protection can be compromised by current transformer (CT) saturation, which distorts current measurements and may lead to the maloperation of protective relays.
Sopheap Key, Soupheng Leap, Seong-Min Yoon, Heungseok Lee, Soon-Ryul Nam   +4 more
doaj   +1 more source