Results 41 to 50 of about 11,911 (300)

A cable insulation defect classification method based on CNN-transformer

Frontiers in Physics
Cable insulation defect detection ensures electrical safety, prevents accidents, extends equipment life and guarantees stable system operation. For the traditional cable insulation defect detection and identification of difficult problems, this paper ...
Ning Zhao, Zhiguo Duan, Qian Li, Kang Guo, Ziguang Zhang, Baoan Liu   +5 more
doaj   +1 more source

Identification of Defects Supporting PD in Rotating Machines with Different Insulation Technologies

, 2018
The problem of an objective identification of defects supporting Partial Discharges (PD) in different types of insulation systems adopted in ac rotating machines, is approached.
Andrea Cavalini, Alfredo Contin, Andrea Cavallini   +2 more
core   +1 more source

Partial Lattice Defects in Higher-Order Topological Insulators [PDF]

Physical Review Letters, 2019
Nonzero weak topological indices are thought to be a necessary condition to bind a single helical mode to lattice dislocations. In this work we show that higher-order topological insulators (HOTIs) can, in fact, host a single helical mode along screw or edge dislocations (including step edges) in the absence of weak topological indices.
Queiroz, Raquel, Fulga, Ion Cosma, Avraham, Nurit, Beidenkopf, Haim, Cano, Jennifer   +4 more
openaire   +3 more sources

Computer Vision for DC Partial Discharge Diagnostics in Traction Battery Systems

World Electric Vehicle Journal, 2023
The tendency towards thin insulation layers in traction battery systems presents new challenges regarding insulation quality and service life. Phase-resolved DC partial discharge diagnostics can help to identify defects.
Ronan Sangouard, Ivo Freudenberg, Maximilian Kertel   +2 more
doaj   +1 more source

Detection of insulation defects in the wire through measuring changes in its capacitance [PDF]

, 2018
The paper describes the technique to detect local wire insulation defects through measuring the wire capacitance. The operating principle of the CAP-10 device is explained.
Vavilova, Galina Vasilievna, Ryumkin, A. V., G V Vavilova, A V Ryumkin   +3 more
core   +1 more source

Electrical resistance of individual defects at a topological insulator surface [PDF]

Nature Communications, 2017
AbstractThree-dimensional topological insulators host surface states with linear dispersion, which manifest as a Dirac cone. Nanoscale transport measurements provide direct access to the transport properties of the Dirac cone in real space and allow the detailed investigation of charge carrier scattering.
Felix Lüpke, Markus Eschbach, Tristan Heider, Martin Lanius, Peter Schüffelgen, Daniel Rosenbach, Nils von den Driesch, Vasily Cherepanov, Gregor Mussler, Lukasz Plucinski, Detlev Grützmacher, Claus M. Schneider, Bert Voigtländer   +12 more
openaire   +6 more sources

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur, Faruk Kaya, Bora Derin, Mustafa Lütfi Öveçoğlu, Ju Li, Duygu Ağaoğulları   +5 more
wiley   +1 more source

A Study on the Propagation Characteristics of Partial Discharge in Cable Joints Based on the FDTD Method

IEEE Access, 2020
Partial discharge (PD) is the main cause of cable insulation deterioration. It is of great theoretical significance and practical value to carry out PD research on high voltage (HV) cable joints for fault detection and operational status evaluation.
Yifan Zhou, Yongliang Wang, Wei Wang
doaj   +1 more source

A novel adversarial transfer learning in deep convolutional neural network for intelligent diagnosis of gas‐insulated switchgear insulation defect

IET Generation, Transmission & Distribution, 2021
Recently, numerous data‐driven fault diagnosis methods have been developed, and the tasks involving the same distribution of training and test data have been well solved.
Yanxin Wang, Jing Yan, Qianzhen Jing, Zhenkang Qi, Jianhua Wang, Yingsan Geng   +5 more
doaj   +1 more source

Parameters that influence the partial discharges occurrence in cavity defect within electrical cable insulation

Diagnostyka, 2023
The electrical cable reliability is largely linked to the state of its insulation, which can be threatened by the partial discharges (PDs) activity. This phenomenon is localized in defects created within insulation during the manufacture process and the ...
Abdelkader Elagoun, Tahar Seghier
doaj   +1 more source