Results 21 to 30 of about 16,417,442 (254)
Bipolar charge transport model to estimate charging and degradation processes in electron-beam-irradiated LDPE films [PDF]
Journal of Physics D: Applied Physics, 2019 Abstract Improvement of the performances of dielectric materials subjected to electrical stresses is one of the challenging objectives in a large number of domains of industrial applications. Achieving this goal requires a better understanding of the physical processes governing the behavior of dielectrics and their long-term ...
M E Banda +3 more
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Simulation research on space charge characteristics of zinc oxide varistor
Energy Reports, 2020 Zinc oxide (ZnO) lightning arresters have good protection performance and have been widely used in power systems. ZnO varistor is the core component of the arrester, and its electrical performance determines the overvoltage protection level of the ...
Qian Wang, Ruonan Zhang, Chenjie Ji
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Applied Sciences, 2023 Oil-impregnated paper condenser transformer bushings are an important part of transformer equipment, and partial discharge (PD) occurred when defects exist on the condenser aluminum foil layers. Firstly, to study the PD process of the oil-paper insulated
Fan Yang +3 more
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Space charge behaviours in polyethylene under combined AC and DC electric fields
, 2014 Polyethylene has been one of the widely studied polymeric insulation materials. One of the major issues related to polymeric materials is the easy formation of space charge which may cause electric field enhancement. In this paper, a numerical simulation
Zhou, Churui, Chen, George
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Energies, 2022 During the operation of HVDC extruded cables, voltage polarity reversal (VPR) is considered one of the most severe conditions for cable insulation.
Yifan Zhou, Bo Gao, Wei Wang, Ke Song
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A new model for surface potential decay of corona-charged polymers [PDF]
, 2010 Surface potential measurement provides a useful tool to gauge the electrical properties of materials. It has been observed that the potential of a sample with an initial high surface potential decays faster than that with an initial lower surface ...
Chen, George
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Energies, 2020 The superimposed transient electric field generated by polarity reversal causes severe stress to the high-voltage direct current (HVDC) cable insulation.
Sun-Jin Kim, Bang-Wook Lee
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An investigation using cultured human cell lines, of the involvement of vanadium, cation transport and phosphatidylinositol in the aetiology of bipolar manic-depressive psychosis [PDF]
, 2015 The symptoms, classification, occurrence and possible aetiologies of bipolar manic-depressive psychosis have been reviewed, with particular emphasis on the possible role of the vanadate ion (V5+) and cation transport in the illness.
Banks, Rosamonde Elizabeth +1 more
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Space Charge Accumulation Characteristics in HVDC Cable under Temperature Gradient
Energies, 2020 One of the main issues that affect the development of high-voltage direct-current (HVDC) cable insulation is the accumulation of space charge. The load operation of an HVDC cable leads to the formation of a radially distributed temperature gradient (TG ...
Yifan Zhou, Wei Wang, Tailong Guo
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Charge Transport: Paths and Energy Profiles [PDF]
, 2022 To maintain life, charge transfer processes must be efficient to allow electrons to migrate across distances as large as 30 – 50 Å within a timescale from picoseconds to milliseconds, and the free-energy cost should not exceed one electron volt.
Ibrahim, Maqboul
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