Results 31 to 40 of about 4,358 (304)

Effect of surface energy on the contamination characteristics of porcelain double umbrella insulators [PDF]

Archives of Electrical Engineering
To explore the influence of surface energy on the contamination characteristics of insulators, COMSOL Multiphysics software was used to simulate the contamination characteristics of XWP 2-160 insulators under wind tunnel conditions, and the rationality ...
Yukun Lv, Qian Wang, Zeze Chen, Jiawen Wang   +3 more
doaj   +1 more source

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

Pollution flashover under different contamination profiles on high voltage insulator: Numerical and experiment investigation

, 2021
This work aimed to study the influence of contamination profiles and humidity on flashover electrical characteristics of polluted insulators. Firstly, the flashover tests on cap and pin glass insulators under four pollution levels represented by salinity
Wan Rahiman, Wan Rahiman, Sheikh, Usman Ullah, Al-Ameri, Salem Mgammal, Ishak, Mohd. Taufiq, Salem, Ali Ahmed, Abd. Rahman, R., Al-Gailani, Samir Ahmed   +6 more
core   +1 more source

Powder Optimization Strategies for Binder Jetting Printing of BaTiO3 and Ba0,6Sr0,4TiO3 Ceramics

Advanced Engineering Materials, EarlyView.
Powder optimization is investigated to enable binder jetting of BaTiO3 and Ba0.6Sr0.4TiO3 ferroelectric ceramics. The antagonistic relationship between flowability and binder compatibility is addressed through binder impregnation of granulated powders and fumed silica addition to fine powders.
Fanny Pruvost, Lionel Presmanes, Soléna Colin, Marie Vidal, Sophie Guillemet‐Fritsch   +4 more
wiley   +1 more source

High voltage insulator contamination level online monitoring with conventional and novel methods

, 2016
Conventional online monitoring techniques used for monitoring the levels of contamination on high voltage insulators, such as leakage current and partial discharge, are not effective in dry conditions since they require the surface of the insulator to be
Jiang, Y., Wilson, A., Nakahi, A., Judd, M., Reid, Alistair, McMeekin, S.   +5 more
core   +2 more sources

Contamination Grades Recognition of Ceramic Insulators Using Fused Features of Infrared and Ultraviolet Images

Energies, 2015
In order to realize the non-contact measurement of ceramic insulator contamination severity, a method based on feature level fusion of infrared (IR) and ultraviolet (UV) image information is proposed in this paper.
Lijun Jin, Da Zhang
doaj   +1 more source

Numerical Analysis and Experimental Study of the Laser Cleaning of Ceramic Insulator Contamination

IEEE Access, 2022
Contamination flashover of insulators is one of the main threats to the safety of power systems, and regular cleaning of insulator surface pollution is an effective solution to this problem.
Xianqiang Li, Ji Tian, Zhiyuan Ma, Wenchuang Zhou, Yuancheng Qin   +4 more
doaj   +1 more source

Recycling of NiTi Shape Memory Alloys: Fundamental and Technological Aspects of a Vacuum Induction Melting Processing Route

Advanced Engineering Materials, EarlyView.
The present study investigates recycling of NiTi shape memory alloys via vacuum induction melting. An ingot was synthesized from elemental Ni and Ti and subjected to three subsequent remelting cycles. Remelting increases process durations and impurity levels and adversely affects microstructures and functional properties.
Sakia Sophia Noorzayee, Son Tung Mai, Sarath Menon, Braulio Gadiel Sánchez Ortega, Ralf Drautz, Alexander Kauffmann, Gunther Eggeler, Jan Frenzel   +7 more
wiley   +1 more source

Research on surface charge accumulation characteristics of post-composite insulators in polluted environments

AIP Advances
Post insulators are commonly used in DC converter stations. Studying their contamination accumulation characteristics is crucial for reducing pollution flashover accidents and ensuring power systems’ safe and stable operation.
Ping Huang, Guoting Yang, Kequan Wei, Junlin Huang, Biao Zhang   +4 more
doaj   +1 more source

Analysis of Electric Field and Temperature Distributions of Non-Uniformly Contaminated Silicone Composite Insulators Using Deep Learning

IEEE Access
This study examines the insulation performance of a silicone composite insulator under various contamination conditions. The non-uniform pollution of a silicone composite insulator, operating in a 34.5 kV, 50 Hz power grid under atmospheric conditions ...
Irem Gorgoz, Mehmet Cebeci
doaj   +1 more source