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

Abstract

Overhead transmission line is the main method of power transmission. Conductors, insulators, and towers are the primary electrical equipment of overhead transmission lines. Due to overhead transmission lines work in the natural environment, problems such as icing, corona discharge, contamination deposition, and corrosion will arise. As a result, some accidents may occur, which cause enormous economic losses. The above problems can be solved by coating functional coatings with superhydrophobic, semiconductive, anti-corrosion, and other characteristics on electrical equipment, which has the advantages of low cost and high efficiency. Therefore, functional coatings have become a research hotspot in the field of external insulation in recent years. In view of the various problems of different electrical equipment in overhead transmission lines, distinctive solutions need to be adopted, so this review classifies the coatings according to the usage scenarios and functions. In each category, first briefly outlines the causes of the electrical equipment problem, then introduces the mechanism of using this type of functional coating to solve the problem, next summarizes the development and application status of this type of coating, after summarizes the limitations of this coating, and finally provides a summary of the key issues in the research of functional coatings and gives an outlook on potential future research directions. This review intends to provide readers with a comprehensive overview of the performance principles and current application status of functional coatings for overhead transmission lines.

Superhydrophobic Non-Metallic Surfaces with Multiscale Nano/Micro-Structure: Fabrication and Application

“…Furthermore, the excessive accumulation of ice, followed by the shedding of ice, may result in abnormal service conditions, potentially causing severe safety incidents and economic losses [162]. These disasters occur in numerous fields, such as aviation, power production, building construction and transportation [163][164][165][166][167]. In view of these security risks and energy waste issues, the superhydrophobic modification of material surfaces has become a potential solution to anti-icing issues in recent years [168,169].…”

“…Molecules 2024, 29, 2098 13 of 27 production, building construction and transportation [163][164][165][166][167]. In view of these security risks and energy waste issues, the superhydrophobic modification of material surfaces has become a potential solution to anti-icing issues in recent years [168,169].…”

Uncertainties in Managing Atmospheric Icing on Power Lines

“…Zhang et al 2023). The effectiveness of strategies for mitigating the effects of icing due to the conditions and location of the power lines (Hrabovský et al 2017;Tao et al 2022). The effect of influence factors includes the duration of the icing, the type of power line, and the local infrastructure (Peng et al 2022;Z.…”

The Glaze Icing Performance of a Robust Superhydrophobic Film Composed of Epoxy Resin and Polydimethylsiloxane

“…The performance of the transmission line is directly related to the safe operation of the power grid. The construction of transmission lines in many areas has been facing the problem of icing on the transmission lines, which seriously threatens the safe operation of power grids [1,2]. Therefore, researching the anti-icing theory and methods for transmission lines and effectively suppressing the occurrence of icing on transmission line insulators has become a focus of attention and an urgent technical problem in the entire power industry [3].…”