A Novel Application of Nano Anticontamination Technology for Outdoor High‐Voltage Ceramic Insulators

Abstract

A novel application of a nano-sized titanium dioxide (TiO 2 ) photocatalyst for improving the performance of the ceramic insulator under contaminated conditions is proposed in this paper. The TiO 2 -coated insulator was prepared by spraying a certain amount of TiO 2 sol on the ceramic insulator followed by subsequent calcination. The physical and chemical properties of the TiO 2 film were studied and their influences on the self-cleaning and electrical performances of the ceramic insulator were evaluated. Compared with the uncoated insulators, the as-prepared TiO 2 -coated insulator exhibited an enhanced self-cleaning ability in a heavy polluted environment because of the excellent photo-induced catalytic performance of the TiO 2 film. Moreover, the TiO 2 -coated insulators presents a flashover voltage level similar to normal ceramic insulators, and even a higher performance of wet flashover than the latter. It was proposed that the semiconducting property and the hydrophilicity of TiO 2 films could be responsible for the promoting effect on the electrical performances of the porcelain insulator. This study shows that coating TiO 2 films on the surface of insulators may have a promise in preventing pollution flashover.

A Review on Nanotechnology Applications in Electric Components

“…For preparation of TiO2 coating insulator some amount of TiO2 was sprayed on ceramics insulator and then it is followed by calcination. The results revealed that TiO2 coated insulators has excellent photo-induces performance and have enhanced self-cleaning ability in pollution as compared to uncoated insulators [37]. Hence, it is proved that nanoparticles coated insulators establishing a promising era to prevent insulator from heavy pollution and enhance electrical properties.…”

A review on mechanism and application of functional coatings for overhead transmission lines

“…Besides superhydrophobic coatings, nonlinear coatings (Ibrahim et al, 2014), Slippery Liquid Infused Porous Surfaces (SLIPS) (Olad et al, 2021), TiO 2 coatings (Zhuang, 2010;Zhuang et al, 2010;Castaño et al, 2014) have also been applied to improve the pollution flashover performance of insulators.…”

Flashover monitoring system using wireless sensor network

“…Moreover, some researchers have proposed smart material to indicate the status of flashover. And others suggest selfrepellent methods [11].…”