Results 1 to 10 of about 583,507 (329)
Energies, 2023 Gas-insulated power transmission lines (GILs) can replace cables and overhead transmission lines, playing an important role in DC transmission systems. However, the influence of surface charge accumulation on insulation reliability cannot be ignored as ...
Fangwei Liang +4 more
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Energies, 2022 Epoxy insulators are widely used in Gas-Insulated Transmission Lines (GILs), playing a significant role in electrical insulation and mechanical support. The metal particles generated during the production and operation of the equipment aggravate surface ...
Wenqu Wang, Yu Gao, Huicun Zhao
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AIP Advances, 2015 Surface charge accumulation on insulators under high dc voltage is a major factor that may lead to the reduction of insulation levels in gas insulated devices. In this paper, disc insulators made of Al2O3-filled epoxy resin were surface fluorinated using
Boya Zhang +5 more
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Surface charge accumulation of post insulator: Dominant charge transition under different conditions
High Voltage, 2023 An insulator surface charge may be responsible for flashover along the insulator surface. In this study, experimental investigations of post insulator surface charge are performed using a variety of voltage, gas type, and gas pressure conditions ...
Fangwei Liang +4 more
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Full life property of surface charge accumulation on HVDC spacers considering transient and steady states [PDF]
IEEE transactions on dielectrics and electrical insulation, 2019 A theoretical model considering the dynamic change of surface charge accumulation in transient and steady states is proposed. The surface charge accumulation under transient and steady states are simulated using three model spacers with different volume ...
Chuanyang Li +11 more
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Charge dynamics in spacecraft polymers: Trap-modulated mechanisms from bulk accumulation to surface secondary electron emission [PDF]
AIP AdvancesThe spacecraft operate under complex space effects, with the interaction between charged particles and dielectric being the primary cause of charging phenomena and subsequent discharge events.
Wen-Tong An +8 more
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Energies, 2021 As DC transmission voltage increases, the DC wall bushing becomes longer, and a supporting insulator is introduced to keep the conductor straight. Under extremely high electric fields coupled with a thermal gradient, the surface charge of the supporting ...
Qian Wang +4 more
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AIP AdvancesPost insulators are commonly used in DC converter stations. Studying their contamination accumulation characteristics is crucial for reducing pollution flashover accidents and ensuring power systems’ safe and stable operation.
Ping Huang +4 more
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Zhongguo dianli, 2020 The HVDC cable accessory is the weak point of the cable system. In order to study the effect of the nonlinear conductivity on the charge accumulation property of SiR cable accessory insulation under polarity reversal voltage, this paper prepared a SiR ...
Zhuoran YANG +4 more
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High Voltage, 2020 Charge accumulation has always been a problem for the safe operation of gas insulated switchgear (GIS)/gas insulated transmission line (GIL) both under AC and DC.
Dayu Li +4 more
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