Results 31 to 40 of about 14,564 (307)

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

Electrical 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

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

Известия 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, A. V. Golenishchev-Kutuzov, A. V. Semenikov, G. D. Mardanov, R. I. Kalimullin, D. A. Ivanov   +5 more
doaj   +1 more source

Pollution Severity Monitoring of High Voltage Transmission Line Insulators Using Wireless Device Based on Leakage Current Bursts

, 2022
Publisher Copyright: © 2013 IEEE.The present article describes a smart wireless online device for the severity monitoring of the contaminated insulators of high voltage transmission networks.
Mahmoud, Karar, Gouda, Osama E., Lehtonen, Matti, Darwish, Mohamed M.F., Elkhodragy, Tamer M.   +4 more
core   +1 more source

High voltage insulation properties of HFO1234ze [PDF]

IEEE Transactions on Dielectrics and Electrical Insulation, 2015
ISSN:1558 ...
Koch, Myriam, Franck, Christian
openaire   +1 more source

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

Electrical 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, V. G. Santotsky, E. D. Shumilova   +2 more
doaj   +1 more source

Analysis of Natural Pollution Accumulation Characteristics of Insulators for Railroads in High-Altitude Environment

, 2023
Railway system insulators are affected by pollution, altitude, and other environmental situations during operation, which causes reduced electrical performance or even flashover accidents.
Siyi Chen, Qin Hu, Jianlin Hu, Zhijin Zhang, Xingliang Jiang   +4 more
core   +1 more source

Influence of Sheds Damage on the AC Pollution Flashover Performance of Different Voltage Class Composite Insulators

IEEE Access, 2020
The damage of high-voltage terminal shed of composite insulators can influence the flashover performance of the insulators. The study was carried out experimentally to investigate the flashover characteristics of composite insulators with sheds damage at
Lu Ming, Li Yangyang, Hu Jianlin
doaj   +1 more source

Flashover Voltage of Epoxy FRP Insulators with Different Surface Roughness and Groove under Nanosecond Pulses in SF6

, 2022
In order to further improve the insulation performance of fiber reinforce plastic (FRP) materials used in electromagnetic pulse (EMP) simulators, the flashover characteristics of FRP materials with different surface roughness and groove, i.e., those who ...
Linshen Xie, Wei Jia, Wei Wu, Le Cheng, Wei Chen, Chengcheng Wang, Fan Guo, Zhiqiang Chen   +7 more
core   +1 more source

Mechanisms for surface potential decay on fluorinated epoxy in high voltage DC applications [PDF]

, 2014
Epoxy resin has been extensively used for decades as an insulation material in high voltage transmission systems. However, this insulation material does suffer from bulk and surface charging when used as insulating spacer, mainly in high voltage DC ...
Z. An, Mohamad, A., Y. Zhang, An, Z., A. Mohamad, Chen, G., G. Chen, Zhang, Y.   +7 more
core   +1 more source

Global experience of HVDC composite insulators in outdoor and indoor environment

Reviews on Advanced Materials Science, 2020
High-voltage direct current (HVDC) transmission is known as green-energy transfer technology and has recently become an attractive alternative of high-voltage alternating current (HVAC) due to its high-power transmission capability and lower power loss ...
Akbar Mohammad, Mehmood Basharat
doaj   +1 more source