Results 11 to 20 of about 8,378 (304)

Effects of Degradation in Textolite Elements of Damaged Surge Arresters

open access: yesEnergies, 2022
The aim of this work was to investigate the effects of the currents flowing through surge arresters on the internal insulating textolite structure. The samples were removed from high-voltage arresters that were taken out of service due to malfunction or ...
Hubert Śmietanka   +4 more
doaj   +2 more sources

Reliability centered condition-based maintenance of zinc oxide lightning arresters: concept, process and case study [PDF]

open access: yesFrontiers in Energy Research
Introduction: The reliability of power equipment is the foundation for maintaining the reliability of the power grid. As a core device for limiting overvoltage in the power grid, lightning arresters have received widespread attention, and ensuring their ...
Fan Yang   +5 more
doaj   +2 more sources

Considered remedies and diagnostic surge arresters

open access: yesИзвестия высших учебных заведений: Проблемы энергетики, 2017
Considered remedies and diagnostic surge arresters. Proposed and economically feasible patents and methods (program) selection of fuses for protection and diagnostics of surge arresters.
I. A. Khatanova, D. V. Khatanov
doaj   +1 more source

Methodology for Analysis of Electric Distribution Network Criticality Due to Direct Lightning Discharges

open access: yesEnergies, 2020
Direct lightning discharges in overhead distribution networks invariably cause serious insulation damage, frequently leading to the electric system’s partial or total shutdown. Installing lightning arresters can be very effective, and it is commonly used
Raphael Pablo de Souza Barradas   +5 more
doaj   +1 more source

Improved method for extracting resistive leakage current of surge protectors

open access: yesThe Journal of Engineering, 2019
The resistive leakage current in surge protectors is an important indicator to characterise its aging degree. It is of great significance to accurately extract the resistive components from the total leakage current for online monitoring of the surge ...
Wei Xu, Feng Sheng
doaj   +1 more source

Modelling and validation of metal oxide surge arrester for very fast transients

open access: yesHigh Voltage, 2018
Metal oxide surge arrester models that are currently on rounds suffer from certain deficiencies and as a consequence, they are not in position to portray accurately the arrester residual voltages.
Kannadasan Raju, Valsalal Prasad
doaj   +1 more source

Development of a Low-Energy Mobile Current Waveform Impulse Generator for Application in Low Voltage Surge Arresters [PDF]

open access: yesBrazilian Archives of Biology and Technology
Surge arresters are at the forefront of protection against voltage surges. The loss of the protective effect of surge arresters imposes accidents and unplanned shutdowns on the power system.
Tiago Goncalves Zacarias   +9 more
doaj   +1 more source

Study on Flow Performance of Airboard Flame Arresters

open access: yesHangkong gongcheng jinzhan, 2018
In our country, as the airworthiness certification and aviation technology are lagging far behind, the development of domestic airborne flame arrester has just been included into the agenda. Hence, based on the analysis of the reason of the pressure drop
Liu Minghui   +4 more
doaj   +1 more source

The effect of lightning impulse characteristics and line arrester to the lightning protection performance on 150 kV overhead lines: ATP-EMTP computational approach

open access: yesJournal of Mechatronics, Electrical Power, and Vehicular Technology, 2019
This simulation study presents the effect of lightning strikes on the performance of arresters at 150 kV overhead lines. Lightning strikes have several parameters that affect the performance of line arresters (LA), namely lightning charge, and impulse ...
Fri Murdiya   +4 more
doaj   +1 more source

Electric Field Distribution and AC Breakdown Characteristics of Polluted Novel Lightning Protection Insulator under Icing Conditions

open access: yesEnergies, 2021
As a result of lightning strikes, pollution, and ice, overhead distribution wires might be short-circuited and trip. As a result, researchers have developed a new lightning protection composite insulator.
Jiazheng Lu   +4 more
doaj   +1 more source

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