Deposition of SiO<sub>2</sub> and TiO<sub>2</sub> Films on Electrode Materials to Suppress Space Charge Injection

Wu, Shengwei; Yang, Qing; Zhang, Zhaotian; Shao, Tao

doi:10.1109/tps.2020.3029865

Cited by 7 publications

(1 citation statement)

References 43 publications

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“…Cui Chaochao et al used the atmospheric pressure plasma jet to treat the copper surface and found that when the thickness of the deposited TiO 2 film was 349 nm, the work function increased from 4.65 to 4.87 eV and the maximum field strength near the defect was also reduced [14,15]. At present, metal surface coating technology has been widely studied [16][17][18], which provides an important reference for the study of using coating technology to improve insulation performance in electrical equipment.…”

Section: Introductionmentioning

confidence: 99%

Effect of SiO₂ nano film deposited on copper and aluminium electrodes on the power frequency breakdown voltage of SF₆ gas

et al. 2022

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In order to reveal the effect of insulating nano film on the insulation strength of SF6 gas gap, SiO2 nano film was deposited on the electrode surface by the plasma‐enhanced chemical vapour deposition technique. The power frequency breakdown characteristics of SF6 gas under Cu and Al electrodes were obtained before and after coating. The results showed that when the Cu electrode was coated, the breakdown voltage was up to at most 11.5% higher than that of an uncoated Cu electrode in the pressure range of 0.2–0.5 MPa. When the Al electrode was coated, the breakdown voltage of SF6 gas was lower than that of an uncoated one in the pressure range of 0.2–0.5 MPa. The breakdown voltage of SF6 gas under the Cu electrode was slightly lower than that under the Al electrode, but the breakdown voltages under the coated Cu electrode were significantly higher than that under the coated Al electrode. Through SEM tests, it was found that the surface roughness of the electrode decreases after coating, but particles were formed on the surface of the Al electrode. The content of metal fluoride formed on the coated Al electrode under multiple breakdowns was significantly higher than that on the coated Cu electrode. The research results could provide references for improving insulation performance of GIS equipment.

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Section: Introductionmentioning

confidence: 99%

Effect of SiO₂ nano film deposited on copper and aluminium electrodes on the power frequency breakdown voltage of SF₆ gas

et al. 2022

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Investigating the influence of nano film depositions on the metal surface on the solid-liquid interfacial work function

Yang

Zhang

et al. 2022

Surfaces and Interfaces

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Nano-sized composite improving the insulating performance of insulating paper using low-temperature plasmas

Zhang

et al. 2021

Nanotechnology

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Nanostructured dielectric composite has been considered as a promising manner in improving the flashover performance of oil-paper which has been widely used in power systems. In this paper, plasma-enhanced chemical vapor deposition (PECVD) is used to deposit SiO2 on the ceramic fiber-reinforced insulating paper. Scanning electron microscope images show a large number of SiO2 nanoparticles with diameters of 100 nm–250 nm uniformly attached to the fiber surface after the plasma deposition. The surface flashover voltage of the insulating paper was tested in the air and the transformer oil, respectively. Results show that the corresponding DC surface flashover voltages increased by 15.1% in the air and breakdown between liquid and solid interface increased by 24.6% after the PECVD. It is believed that nanoparticles constructed in ceramic fibers change the electron injection barrier which inhibits the injection of negative charges and hinders the accumulation of charges in the dielectric. Nanoparticles can capture electric charges formed in the transformer oil which affects the generation and development of streamers, resulting in an increased dielectric strength. This study provides a new method to comprehensively improve the surface insulating property which has the prospect of promoting other dielectric materials.

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Deposition of SiO₂ and TiO₂ Films on Electrode Materials to Suppress Space Charge Injection

Cited by 7 publications

References 43 publications

Effect of SiO₂ nano film deposited on copper and aluminium electrodes on the power frequency breakdown voltage of SF₆ gas

Effect of SiO₂ nano film deposited on copper and aluminium electrodes on the power frequency breakdown voltage of SF₆ gas

Investigating the influence of nano film depositions on the metal surface on the solid-liquid interfacial work function

Nano-sized composite improving the insulating performance of insulating paper using low-temperature plasmas

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Deposition of SiO2 and TiO2 Films on Electrode Materials to Suppress Space Charge Injection

Cited by 7 publications

References 43 publications

Effect of SiO2 nano film deposited on copper and aluminium electrodes on the power frequency breakdown voltage of SF6 gas

Effect of SiO2 nano film deposited on copper and aluminium electrodes on the power frequency breakdown voltage of SF6 gas

Investigating the influence of nano film depositions on the metal surface on the solid-liquid interfacial work function

Nano-sized composite improving the insulating performance of insulating paper using low-temperature plasmas

Contact Info

Product

Resources

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Deposition of SiO₂ and TiO₂ Films on Electrode Materials to Suppress Space Charge Injection

Effect of SiO₂ nano film deposited on copper and aluminium electrodes on the power frequency breakdown voltage of SF₆ gas

Effect of SiO₂ nano film deposited on copper and aluminium electrodes on the power frequency breakdown voltage of SF₆ gas