Abstract
This work presents a detailed comparison of our computer simulation
study with our own experiment on coatings of aluminium wires for
high-voltage lines and characterization of coatings. Computer modelling,
using finite element method (FEM), has shown a significant dependence of
a local electric field enhancement factor (β-factor) on the surface
hydrophilicity (wettability). Modelling explained that the β-factor
from a micro-tip on a high-voltage line can be decreased with dependence
from contact angles. It has been shown that highly porous and
hygroscopic properties of the modified surface reduce the contact angle
of water droplets on the wire and the β-factor from the rough
surface due to the dielectric shielding. Newly engineered surfaces allow
for control of the contact angle of a water droplet on the wire and also
reduce the β-factor, in comparison with an uncoated surface.
| Original language | English |
|---|---|
| Pages (from-to) | 15503 |
| Journal | Journal of Physics D: Applied Physics |
| Volume | 53 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 1 2020 |
| Externally published | Yes |
Keywords
- anti-corona coating
- microarc oxidation
- HVAC corona-discharge
- carbon nanocomposites
- FEM modelling
- dielectric shielding