Results 1 to 10 of about 4,883 (170)

Integrated Method of Assessment the Type of Damages, their Localization and Predicting the Destruction of High-Voltage Electrical Equipment Insulators by the Partial Discharges Characteristics [PDF]

open access: yesProblems of the Regional Energetics, 2022
The aim of this study is to improve the accuracy of localization of defects in insulators and determine their type. This goal is achieved by solving the problem of combining contact and remote methods for polymer and porcelain insulators using model ...
Gataullin А.М., Gubaev D.F.
doaj   +1 more source

Foam Polymers in Multifunctional Insulating Coatings [PDF]

open access: yesPolymers, 2021
The application of foamed polymers as one of the components of insulating coatings allows to solve the problems of energy saving and creation of optimal operating conditions for constructions. The systems of application of energy-efficient heat-insulating materials must consider both the particularities of the insulating materials and the functional ...
A., Ter-Zakaryan K.   +4 more
openaire   +2 more sources

Polymer models of topological insulators [PDF]

open access: yesEpigenetics & Chromatin, 2013
Background The classic model of eukaryotic gene expression requires spatial contact between a distal enhancer and a proximal promoter. To control gene expression, various models of enhancer-blocking insulators have been proposed, including a decoy model and a topological model [1].
Doyle, Boryana G   +3 more
openaire   +3 more sources

Effect of Seawater and Fly Ash Contaminants on Insulator Surfaces Made of Polymer Based on Finite Element Method

open access: yesEnergies, 2021
Polymer is an insulating substance that has become increasingly popular in recent years due to its benefits. Light density, superior dielectric and thermal properties, and water-resistant or hydrophobic properties are only a few of the benefits.
I Made Yulistya Negara   +5 more
doaj   +1 more source

Case Study: Optimizing Grading Ring Design for High Voltage Polymeric Insulators in Power Transmission Systems for Enhanced Electric Field and Voltage Distribution by Using a Finite Element Method

open access: yesEnergies, 2023
This research paper aims to investigate the optimal design of grading rings for high-voltage polymeric insulators in an actual power transmission system, with a focus on improving the electrical representation of the insulator strings.
Esraa Aziz   +3 more
doaj   +1 more source

About structural elements of polymer insulators of the contact network

open access: yesВестник Научно-исследовательского института железнодорожного транспорта, 2020
The high load on electrified lines makes tougher the requirements for the reliability and maintainability of power supply devices. Insulators are a critical element of the overhead contact network, and great attention is paid to improving their ...
A. M. Luk’yanov, A. A. Luk’yanova
doaj   +1 more source

Enhanced Charge Transport in a Conjugated Polymer Blended with an Insulating Polymer [PDF]

open access: yesChemistry – An Asian Journal, 2020
AbstractHerein, the hole transport in a quinoxaline–thiophene based conjugated polymer (PTQ1) mixed with an insulating polystyrene (PS) was studied by macroscopic and local current density−voltage characteristics measurements. As a result, we found that the hole conductivity in PTQ1 : PS blends increases as the weight ratio of PTQ1 is reduced down to ...
Hyung Do Kim   +4 more
openaire   +2 more sources

Circuit modelling of aged‐polluted polymer insulators based on measured leakage current characteristics

open access: yesIET Science, Measurement & Technology, 2022
A new equivalent circuit model for aged‐polluted polymer outdoor insulators is proposed here. The structure of the model is constructed as such that it can be applied in investigating the effect of insulator aging and dry band discharge intensity on ...
Mohammad Goudarzi   +2 more
doaj   +1 more source

Feasibility Study on Electrical Properties of 20 kV Polymeric Insulator Dry Test and Rainwater Test

open access: yesJurnal Rekayasa Elektrika, 2021
Insulator is a very important equipment in an electric power system. Ceramic insulators have been widely used to support conductors in 20 kV power lines.
Abdul Syakur   +2 more
doaj   +1 more source

Insulating Polymer Coated Si Photoelectrode [PDF]

open access: yesPolymer Journal, 1985
Nouveau type de photoelectrode Si revetue de polyvinylbutyral, film isolant ayant une excellente adhesion au ...
Yamamura, Soichiro, Kawai, Wasaburo
openaire   +1 more source

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