Results 21 to 30 of about 206 (188)
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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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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Energies, 2020 On-site installation of accessories on extruded polymeric high voltage cables in a common practice. The procedure requires the shaping of the physical interface between the cable insulation surface and the pre-molded accessory body.
Espen Doedens +3 more
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Effect of XLPE/EPDM Interface on Space Charge Behavior in Cable Accessory
IEEE Access, 2019 Space charges accumulate easily at insulation interface of cable accessories, which cause different electric field distribution and aging characteristics compared to single-layered cable.
Mingxiao Zhu +5 more
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Shanghai Jiaotong Daxue xuebaoThe existing mathematical models for charge accumulation at the gas-solid interface can hardly illustrate some microscopic mechanisms, which need improvement.
WANG Yaogang, WANG Zheming, LI Ke, JIA Bowen, YANG Hua, YAN Wu, LU Wu
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Energies, 2019 The influx of a switching impulse during DC steady-state operations causes severe electrical stress on the insulation of HVDC cables. Thus, the insulation should be designed to withstand a superimposed switching impulse.
Ik-Soo Kwon +3 more
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Energies, 2020 Predicting the electrical breakdown of polymers is critical for certifying the endurance and lifetime of high voltage power equipment. Since various factors contribute nonlinearly to the breakdown phenomena of polymer insulators, it is difficult to ...
Minhee Kim, Su-Hun Kim, Se-Hee Lee
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IEEE Access, 2018 In this paper, a modified algorithm is introduced to explain the process of charge formation in water tree aged cable insulation with respect to the dielectric properties of water tree areas and the cylindrical geometries of cable insulation.
Yu Zhang +3 more
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Removal of Sulfadiazine by Polyamide Nanofiltration Membranes: Measurement, Modeling, and Mechanisms
Membranes, 2021 In this study, a complete steric, electrostatic, and dielectric mass transfer model is applied to investigate the separation mechanism of typical antibiotic sulfadiazine by NF90, NF270, VNF-8040 and TMN20H-400 nanofiltration membranes.
Haochen Zhu, Bo Hu, Fengrui Yang
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Materials & Design, 2021 The energy density of polymers for high temperature applications is still relatively low. Among them, polyimide (PI) is one of the most attractive matrixes because of its high thermal stability. Instead of the mono thermal imidization method to fabricate
Jiasheng Ru +4 more
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