Results 31 to 40 of about 6,766 (228)

An overview of biodiesel energy [PDF]

open access: yes, 2020
Over the last ten years’ attention to biofuels production has increased dramatically and become crucial. One of the main factors is the rise in world oil prices, coupled with the abatement of greenhouse gas emissions and concerns about energy security ...
Abd Halim, Muhamad Fazli   +3 more
core  

Influence of single and multiple dry bands on critical flashover voltage of silicone rubber outdoor insulators: simulation and experimental study [PDF]

open access: yes, 2018
Dry band formation on the surface of outdoor insulators is one of the main reasons leading to flashover and power outages. In this paper, a dynamic arc model is proposed for single and multiple dry bands configuration to predict the critical flashover ...
Arshad, Arshad   +4 more
core   +4 more sources

Enhanced flashover strength in polyethylene nanodielectrics by secondary electron emission modification

open access: yesAIP Advances, 2016
This work studies the correlation between secondary electron emission (SEE) characteristics and impulse surface flashover in polyethylene nanodielectrics both theoretically and experimentally, and illustrates the enhancement of flashover voltage in low ...
Weiwang Wang, Shengtao Li, Daomin Min
doaj   +1 more source

Surface flashover of oil-immersed dielectric materials in uniform and non-uniform fields [PDF]

open access: yes, 2009
The applied electrical fields required to initiate surface flashover of different types of dielectric material immersed in insulating oil have been investigated, by applying impulses of increasing peak voltage until surface flashover occurred.
Given, M.J.   +6 more
core   +1 more source

Study on the relationship between the characteristics of water droplets on the shed of composite insulators and the pollution flashover voltage

open access: yesEnergy Reports, 2022
The anti-pollution flashover characteristic of composite insulators is the main indicators to evaluate their electrical performance, and the pollution flashover voltage can directly characterize the anti-pollution flashover characteristics of the ...
Wei Wang   +7 more
doaj   +1 more source

Studying AC Flashover Performance of Suspension Insulators Under Natural Cold Fog and Wet Deposition Conditions

open access: yesIEEE Access, 2020
The electrical performance of insulators under comprehensive conditions including low air pressure, pollution and icing, is an important basis for the selection of external insulation.
Bingbing Dong   +5 more
doaj   +1 more source

Vacuum Insulation Dielectric Surface Flashover

open access: yesDEStech Transactions on Materials Science and Engineering, 2017
With the rapid development of materials technology, insulating materials are widely used in spacecraft construction with its excellent electrical and mechanical properties. However, compared to the Earth's surface environment, the insulating materials in vacuum are prone to electrostatic discharge - flashover along the surface.
Li-dong ZHOU, Zhi-cheng MENG
openaire   +2 more sources

Monitoring contamination level on insulator materials under dry condition with a microwave reflectometer [PDF]

open access: yes, 2016
Current techniques used for monitoring the levels of contamination on high voltage insulators, such as leakage current and infrared, are not effective in dry conditions since they require the surface of the insulator to be wetted by fog, rain or snow. If
Jiang, Y.   +5 more
core   +1 more source

Review of Treatments for Suppressing Surface Charge Accumulation and Enhancing Surface Flashover Voltage

open access: yesCSEE Journal of Power and Energy Systems
The focus of this paper is to provide a comprehensive review of various insulation performance improvement methods for vacuum-solid and compressed air-solid interfaces.
Jixing Sun   +9 more
doaj   +1 more source

Effects of metal particle material on surface flashover performance of alumina-filled epoxy resin spacers in SF6/N2 mixtures under DC voltage

open access: yesAIP Advances, 2019
When metal particle is attached on spacer surface, it will distort surface electric field and may reduce surface insulation level. Therefore, it is important to research the relationship between metal particle attachment and surface flashover property ...
Han Wang   +5 more
doaj   +1 more source

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