Results 71 to 80 of about 6,766 (228)

Study on the Impact of Contamination Containing High Proportions of Metals on the AC Flashover Characteristics of Insulators

open access: yesHigh Voltage, Volume 11, Issue 1, Page 264-273, February 2026.
ABSTRACT In heavy metal industrial areas, the issue of insulation flashover caused by metal contamination on the external insulation of transmission lines has become increasingly prominent. This paper investigates the U160B/155 porcelain insulator, examining how iron, copper and zinc metal contaminations affect its AC flashover characteristics ...
Zhijin Zhang   +5 more
wiley   +1 more source

Study on the dc flashover performance of standard suspension insulator with ring-shaped non-uniform pollution

open access: yesHigh Voltage, 2018
Under dc electric field, pollution may be more easily deposited around insulator string caps and pins, distributing non-uniformly on its inner and outer parts, and presenting ring-like shape.
Zhijin Zhang   +6 more
doaj   +1 more source

Dielectric Properties and Insulation Performance of Nanocellulose Composite Films Enhanced by Hyperbranched Boron Nitride

open access: yesHigh Voltage, Volume 11, Issue 1, Page 179-191, February 2026.
ABSTRACT Boron nitride (BN), characterised by its wide band gap and robust dielectric properties, has emerged as a promising filler for polymer‐based dielectric composites. Nevertheless, its practical implementation in polymer matrices has been hindered by poor dispersibility and inadequate interfacial adhesion. This study addresses these challenges by
Yalin Zhao   +6 more
wiley   +1 more source

Field Analysis of SF(6) Gas Insulated Cables and Its Application to Spacer Design [PDF]

open access: yes, 1974
This paper describes the spacer design for SF(6) gas insulated cables. The maximum electric stress within the cable is calculated by a numerical method, and it is recognized that the breakdown voltage depends linearly on the calculated values.
Itaka, Koshi   +2 more
core   +1 more source

Effect of electron beam irradiation on surface molecule and flashover voltage of epoxy composites

open access: yesHigh Voltage
The unsatisfactory insulating properties of solid–gas interfaces seriously restrict the development of high‐voltage electrical equipment and threaten their power supply stability.
Mingru Li   +9 more
doaj   +1 more source

Charge distributions near metal-dielectric interfaces before and after dielectric surface flashover [PDF]

open access: yes, 1977
A technique was developed for measuring surface charge distribution near interfaces without placing any measuring apparatus near the face of the samples.
Robinson, J. W.
core   +1 more source

Parametric and nonparametric identification of shell and tube heat exchanger mathematical model [PDF]

open access: yes, 2012
Parametric and nonparametric models of a shell and tube heat exchanger are studied. Such models are very important because they provide information about controlling a system operation. Without the model, the control task would be difficult for tuning
Khaerudini, D. S.   +3 more
core   +1 more source

Effect of Aggregation Structure on DC Electrical Performance of Thermo‐Oxidatively Aged Crosslinked Polyethylene Insulation

open access: yesHigh Voltage, Volume 11, Issue 1, Page 49-59, February 2026.
ABSTRACT Thermal ageing is an important factor leading to the deterioration of crosslinked polyethylene (XLPE) cable insulation. In this paper, XLPE insulating material was prepared in the laboratory and treated by thermal ageing at 130°C for durations of up to 40 days.
Bingrong Huang   +5 more
wiley   +1 more source

Flashover Characteristics of Dry Band-water band on Hydrophobic Surfaces

open access: yesCSEE Journal of Power and Energy Systems
Due to their outstanding anti-flashover characteristics, composite insulators have been extensively applied in power systems. A lot of research has investigated flashover characteristics of hydrophobic specimens with artificial water droplets.
Xiaohan Wu   +5 more
doaj   +1 more source

Temperature-Dependent Surface Charge and Flashover Behaviors of Oil-Paper Insulation Under Impulse With Superimposed DC Voltage

open access: yesIEEE Access, 2018
Oil-paper insulation will inevitably endure impulse voltage with a superimposed dc voltage (superimposed voltage) because of introduced lightning or switching, which can induce charge accumulation and trigger flashover during the operation of a converter
Boxue Du   +3 more
doaj   +1 more source

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