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- Title
Influence of Corona Discharge on CaSO4 Solubility of Silicone Rubber Insulator Surface.
- Authors
Sihua Wang; Junjun Wang; Long Chen; Lei Zhao
- Abstract
Some studies have shown that the operating state of silicone rubber insulators is not only affected by surface corona discharge, but also different due to the surface covered with different pollutants, but few studies have linked the two. In this paper, by designing the corona discharge test of silicone rubber insulator, the output of nitric acid from its surface product was calculated, and the concentration of nitric acid under different air humidity was obtained. The solubility test of slightly dissolved salt calcium sulfate in nitric acid solution at 293.15K and 333.15K was designed to obtain the solubility of calcium sulfate at different concentrations of nitric acid at two temperatures. Finally, a quantitative analysis of the solubility of calcium sulfate on the surface of insulator FXBW10/70 in nitric acid solution shows that the surface contamination of insulator with good hydrophobicity may be completely dissolved by nitric acid solution, but the surface of insulator with loss of hydrophobicity cannot be completely dissolved by nitric acid. This study provides a theoretical basis for the dissolution characteristics of silicon rubber insulator corona discharge on its surface soluble salt composition, and provides a new idea for the influence of insulator corona discharge on its electrical properties.
- Subjects
CORONA discharge; SILICONE rubber; CALCIUM sulfate; SOLUBILITY; SURFACE contamination; NITRIC acid
- Publication
Electrotehnica, Electronica, Automatica, 2021, Vol 69, Issue 1, p84
- ISSN
1582-5175
- Publication type
Article
- DOI
10.46904/eea.21.69.1.1108010