Results 21 to 30 of about 49,234 (298)

Detection acoustic signals of partial discharges on defects in high voltage insulation [PDF]

open access: yesОмский научный вестник, 2021
The article is devoted to the method of acoustic registration of partial discharges in high-voltage insulators. Physical processes of generation of various types of partial discharges in high-voltage insulators are considered.
D. A. Ivanov   +5 more
doaj   +1 more source

Influence for Ambient Relative Humidity and Pollution on Infrared Detection of Zero Resistance Insulators

open access: yesFrontiers in Energy Research, 2022
Porcelain insulators play a vital role for the safety and stability operations of electric systems. In a strong electric field, these insulators easily break down and become zero resistance insulators, which impacts the safety and stability operations of
Ling Chen   +5 more
doaj   +1 more source

Study of electrophysical processes and aging of the material of highvoltage insulators to determine their working life

open access: yesИзвестия высших учебных заведений: Проблемы энергетики, 2022
The article is aimed to discuss the results of research on the characteristics of partial discharges on defects of different types in high-voltage insulators - on dielectric rod and contact «terminal rod».
D. A. Ivanov
doaj   +1 more source

Condition Monitoring of Outdoor High Voltage Insulators, Online and Offline Techniques: A review

open access: yesNUST Journal of Engineering Sciences, 2021
 Outdoor insulator plays a vital role in high voltage transmission and distribution system. The performance and properties of outdoor insulator may severely affect due to various types of pollutants.
Haseeb Faisal, Arshad Ali, Muhammad Riaz
doaj   +1 more source

Generation of critical acoustic pulses in high-voltage insulators due to induced fields of partial discharges

open access: yesИзвестия высших учебных заведений: Проблемы энергетики, 2023
THE PURPOSE of the article is to discuss an updated survey of the technical condition of porcelain high-voltage insulators of the type IOS 110/400, which had defects with partial discharge intensities above 4 nC, at Tatenergo substations. The experiments
V. A. Golenishchev-Kutuzov   +5 more
doaj   +1 more source

INVESTIGATION OF EXPLOSION SAFETY OF DC POLYMER SURGE ARRESTERS 3.3 KV FOR TRACTION NETWORK OF RAILWAY TRANSPORT

open access: yesElectrical engineering & Electromechanics, 2019
In the testing laboratories of Ukraine, there is no high-voltage equipment of the necessary energy for testing surge arresters for explosion safety, which does not allow to estimate this indicator at the stage of development of prototypes.
Yu. N. Shumilov, V. I. Bondarenko
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

ON THE NEED TO INCREASE THE RELIABILITY OF LINEAR INSULATORS FOR DISTRIBUTION NETWORKS 10-20 KV

open access: yesElectrical engineering & Electromechanics, 2018
Introduction. In Ukraine high voltage overhead distribution lines (OL) of class 6 and 10 kV are the most extended. Their total length exceeds 280,000 km. More than 95% of the lines are made on line supports from reinforced concrete racks. On all poles of
Yu. N. Shumilov   +2 more
doaj   +1 more source

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

A comprehensive method for remote monitoring of the high-voltage insulators

open access: yesИзвестия высших учебных заведений: Проблемы энергетики, 2017
With the help of the developed two-channel method for remote control of high-voltage insulators have been studied peculiarities of characteristics of partial discharges (PD) for determining a working condition of insulators under high voltage. Therefore,
A. V. Golenishchev-Kutuzov   +5 more
doaj   +1 more source

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