Results 31 to 40 of about 64,483 (349)

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

Feasibility study on application of microwave radiometry to monitor contamination level on insulator materials [PDF]

open access: yes, 2016
This paper introduces a novel method for monitoring contamination levels on high voltage insulators based on microwave radiometry. Present contamination monitoring solutions for high voltage insulators are only effective in predicting flashover risk when
Jiang, Y.   +5 more
core   +2 more sources

Porcelain insulation – defining the underlying mechanism of failure

open access: yesHigh Voltage, 2019
Porcelain insulators have a long history and wide application range in power systems, but just like any other insulator, they can fail. A number of pole fires occurred on lines utilising porcelain suspension insulators.
Joni Kluss   +6 more
doaj   +1 more source

Research on Vibro-Acoustic Detection Method of Porcelain Pillar Insulators [PDF]

open access: yesE3S Web of Conferences, 2023
High-voltage pillar-type porcelain insulators are important components of power plants and substations, and are widely used in power grids. In recent years, various kinds of accidents caused by breakage of pillar insulators have occurred frequently ...
Gao Lei   +9 more
doaj   +1 more source

Quantum Simulation of the Hubbard Model: The Attractive Route [PDF]

open access: yes, 2009
We study the conditions under which, using a canonical transformation, the phases sought after for the repulsive Hubbard model, namely a Mott insulator in the paramagnetic and anti-ferromagnetic phases, and a putative d-wave superfluid can be deduced ...
Cazalilla, M. A.   +2 more
core   +5 more sources

Surface Roughness Detection of Roof Insulator Based on Hyperspectral Technology

open access: yesIEEE Access, 2020
The strong airflow generated during the operation of the high-speed train will carry sand and dust, causing high-speed sand and dust to hit the surface of the external equipment of the vehicle body, which will increase the surface roughness of the roof ...
Chaoqun Shi   +5 more
doaj   +1 more source

A high‐performance insulators location scheme based on YOLOv4 deep learning network with GDIoU loss function

open access: yesIET Image Processing, 2022
This paper proposes a Gaussian Distance Intersection over Union (GDIoU) loss function‐based YOLOv4 deep learning network to solve the problem of slow speed and low accuracy insulator location in power facilities health inspection.
Bin Ma   +4 more
doaj   +1 more source

A New Current Transducer for On-Line Monitoring of Leakage Current on HV Insulator Strings

open access: yesIEEE Access, 2022
Leakage current measurement and its harmonics have been widely used for the pollution level estimation of HV insulator strings. However, the solutions available to applications into transmission lines and substations are few and it reduces the creepage ...
Rodrigo J. Villalobos   +5 more
doaj   +1 more source

Momentum space imaging of Cooper pairing in a half-Dirac-gas topological superconductor (a helical 2D topological superconductor) [PDF]

open access: yes, 2014
Superconductivity in Dirac electrons has recently been proposed as a new platform between novel concepts in high-energy and condensed matter physics.
Alidoust, Nasser   +16 more
core   +1 more source

Tracking, erosion and thermal distribution of micro-AlN + nano-SiO(2) co-filled silicone rubber for high-voltage outdoor insulation

open access: yesHigh Voltage, 2018
Thermal depolymerisation induced tracking and erosion of polymeric insulators is one of the key insulation failure modes and this process adversely affects the reliability of power delivery networks.
Muhammad Tariq Nazir   +5 more
doaj   +1 more source

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