Results 21 to 30 of about 772,396 (130)

Effect of Electric-Field Components on the Flashover Characteristics of Oil-Paper Insulation Under Combined AC-DC Voltage

open access: yesIEEE Access, 2023
Flashover characteristics are closely related to the electrical field distribution on the surface of oil-paper insulation. In this study, the effects of electrical field and DC voltage components on the creepage flashover characteristics of oil-paper ...
Jin Fubao, Zhou Yuanxiang
doaj   +1 more source

Particle swarm optimization of a neural network model for predicting the flashover voltage on polluted cap and pin insulator [PDF]

open access: yes, 2022
This paper proposes training an artificial neural network (ANN) by a particle swarm optimization (PSO) technique to predict the flashover voltage of outdoor insulators.
Bourek, Yacine   +5 more
core   +2 more sources

Experimental and numerical investigation of alumina trihydrate effect for improvement of polymer flashover voltage strength

open access: yesEngineering Science and Technology, an International Journal, 2020
Flashover voltage is considered one of the important factors affect the Power system reliability. Environmental conditions and filling of insulators are parameters should be considered in flashover voltage evaluation. In this work, laboratory studies are
L.S. Nasrat   +2 more
doaj   +1 more source

Pollution Flashover Characteristics of Composite Crossarm Insulator with a Large Diameter

open access: yesEnergies, 2021
The composite crossarm insulator differs greatly from the suspension insulator in structure and arrangement. This study aims to determine the pollution flashover characteristics of composite crossarm insulators under different voltage grades.
Jing Nan   +4 more
doaj   +1 more source

Impulsive Flashover Characteristics and Weibull Statistical Analysis of Gas-Solid Interfaces With Varying Relative Humidity

open access: yesIEEE Access, 2020
This paper informs on the flashover strength of three materials: Delrin (polyoxymethylene), HDPE (high-density polyethylene) and Ultem (polyetherimide) with smooth surface finishes, in zero-grade air at -0.5, 0 and 0.5 bar gauge, and at <; 10%, ~50 ...
Ruairidh W. Macpherson   +4 more
doaj   +1 more source

Insulator fault feature extraction system of substation equipment based on machine vision

open access: yesIET Networks, EarlyView., 2022
Abstract The artificial intelligence technology and intelligent automation are more and more widely used, the insulators play a supporting and insulating role in the operation of the grid. The use of machine vision inspection technology to detect insulator faults has become an inevitable trend of the times.
Keruo Jiang   +4 more
wiley   +1 more source

Investigation of Lightning-Initiated Flashover Faults in Medium Voltage Overhead Lines - Modelling and Experimental Evaluation [PDF]

open access: yes, 2016
Lightning can cause flashovers on Medium Voltage (MV) lines from both direct and nearby strikes. The work presented in this dissertation thoroughly investigates the characteristics of lightning-initiated flashover faults, expected overvoltage stress and ...
Mahmood, Farhan
core   +1 more source

Increased surface flashover voltage in microfabricated devices [PDF]

open access: yes, 2013
With the demand for improved performance in microfabricated devices, the necessity to apply greater electric fields and voltages becomes evident. When operating in vacuum, the voltage is typically limited by surface flashover forming along the surface of
W. K. Hensinger   +7 more
core   +1 more source

Displacement Current and Surface Flashover [PDF]

open access: yes, 2007
High-voltage vacuum insulator failure is generally due to surface flashover rather than insulator bulk breakdown. Vacuum surface flashover is widely believed to be initiated by a secondary electron emission avalanche along the vacuum-insulator interface.
G. J. Caporaso   +7 more
core   +1 more source

Laser-triggered surface flashover characteristics of polycarbonate with pulsed voltage

open access: yes, 2010
Based on the platform of laser-triggered surface flashover in pulsed voltage, experiment of laser-triggered surface flashover is carried out in air and vacuum condition with pulsed voltage. A single/double harmonic, with wavelength λ of 1064/532 nm, Q-
Sun, G   +13 more
core   +1 more source

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