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Effects of ZnO magnetron sputtering on surface charge and flashover voltage of oil-impregnated paper
- Source :
- High Voltage (2019)
- Publication Year :
- 2019
- Publisher :
- Wiley, 2019.
-
Abstract
- With the aim of exploring an alternative method of nano-doping in cellulose paper and improving flashover strength of oil-impregnated paper, radio frequency (RF) magnetron sputtering method is introduced into the structural modification of insulating paper for converter transformers. In this experiment, insulating paper was treated with ZnO sputtering for 0, 7.5, 15 and 30 min, respectively. The surface morphology of dry paper was observed with a scanning electron microscope. The bonding mode of sputtered ZnO particles with cellulose matrix was investigated via attenuated total reflection infrared (ATR-IR) spectroscopy and mechanical property of the sputtered samples were studied. Surface and volume conductivities of the oil-impregnated sputtered paper were measured. Moreover, the charge dissipation characteristics of sputtered insulating paper was investigated by means of surface potential decay. In addition, trap distribution and carrier mobility of specimen were further obtained. Finally, the DC flashover strength were tested. The results showed that ZnO magnetron sputtering had a distinct influence on the structure of the insulating paper, resulting in the formation of hydrogen bond and chemical bond and an increase of the surface and volume conductivities. ZnO sputtering was found to decrease the initial potential and accelerate charge decay. Moreover, appropriate sputtering enhanced the surface flashover strength.
- Subjects :
- flashover
paper
zinc compounds
ii-vi semiconductors
surface charging
attenuated total reflection
surface morphology
scanning electron microscopy
infrared spectra
wide band gap semiconductors
sputter deposition
surface potential
carrier mobility
impregnated insulation
insulating oils
surface conductivity
tensile strength
zno magnetron sputtering
surface charge
flashover voltage
cellulose paper
dry paper
sputtered zno particles
mechanical property
sputtered samples
volume conductivities
oil-impregnated sputtered paper
sputtered insulating paper
surface potential decay
dc flashover strength
surface flashover strength
flashover strength
radiofrequency magnetron sputtering method
structural modification
converter transformers
bonding mode
cellulose matrix
atr-ir spectroscopy
charge dissipation characteristics
trap distribution
hydrogen bond
chemical bond
time 30.0 min
time 0.0 min
time 7.5 min
time 15.0 min
zno
Electrical engineering. Electronics. Nuclear engineering
TK1-9971
Electricity
QC501-721
Subjects
Details
- Language :
- English
- ISSN :
- 23977264 and 94240647
- Database :
- Directory of Open Access Journals
- Journal :
- High Voltage
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.21834b94240647eba1031a1ddf8ee735
- Document Type :
- article
- Full Text :
- https://doi.org/10.1049/hve.2019.0070