Results 21 to 30 of about 5,040 (292)
Energy Reports, 2022 The anti-pollution flashover characteristic of composite insulators is the main indicators to evaluate their electrical performance, and the pollution flashover voltage can directly characterize the anti-pollution flashover characteristics of the ...
Wei Wang +7 more
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Study on the calculation of shielding failure for dc transmission lines
The Journal of Engineering, 2019 Lightning is the main cause of transmission line failure, and it is important to improve the lightning protection level of the transmission line for the stability of the power system.
Jinbo Wu +5 more
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Prediction Model for the DC Flashover Voltage of a Composite Insulator Based on a BP Neural Network
Energies, 2023 To be able to predict the DC flashover characteristics of composite insulators, a four-layer BP neural network model is established with composite insulator shed structure parameters as the input. Three algorithms (gradient descent with momentum, RMSProp
Zhenan Zhou +3 more
doaj +1 more source
Durability of crosslinked polydimethylsyloxanes: the case of composite insulators [PDF]
Science and Technology of Advanced Materials, 2008 Most applications of silicones are linked to their hydrophobic properties and (or) their high resistance to ageing (e.g. thermal ageing and photoageing). However, when placed in extreme environments, these materials can fail as in the case of epoxy/fiber glass composite powerlines insulators, where crosslinked polymethylsyloxanes (PDMSs) are used as ...
Delor-Jestin, Florence +3 more
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Ain Shams Engineering Journal, 2018 This paper presents the simulation results of electric field distribution for optimally designed medium voltage composite insulators under polluted conditions with and without water droplets.
El-Sayed M. El-Refaie +2 more
doaj +1 more source
A Comparative Study of Abnormal Heating Composite Insulators
, 2023 The abnormal heating of composite insulators on transmission lines frequently occurs, seriously threatening the power grid’s safe and stable operation.
Le Li, Yunpeng Liu, Song Gao
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
IEEE Access, 2018 Composite insulators have been extensively adopted in electric transmission lines due to their preferable resistance to contamination flashover. To generally ensure the function of power networks, it is of crucial importance to perform regular online ...
Li Cheng +3 more
doaj +1 more source
High Voltage, 2023 Interface degradation between mandrel and sheath can cause a decrease in insulation performance and mechanical strength of composite insulators. In this study, the interface ageing properties of cycloaliphatic epoxy resin and silicone rubber composite ...
Yunsong Wang +4 more
doaj +1 more source
Composite Aerogel for Heat Insulation
Chemical Engineering Transactions, 2020 Silica aerogels are often brittle and MTMS is rather expensive. Therefore, it is necessary to strengthen MTMS silica aerogels and lower their cost. In this research, hydrophobic composite monolithic methyltrimethoxysilane (MTMS) based aerogels were investigated.
Cao Oanh T. H. +5 more
openaire +2 more sources