Effect of TiO2 coating on the surface condition and corona characteristics of positive DC conductors with particle matters

High Voltage

Boyang Shen¹  Luxing Zhao²  Yanxiang Ma³  Pei Xu⁴  Xingming Bian⁴  Jie Zhu⁵ 

[1] Electrical Engineering Division University of Cambridge Cambridge UK;High Voltage Research Department China Electric Power Research Institute Beijing China;Shijingshan Power Supply Company State Grid Beijing Electric Power Supply Company Beijing China;State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University Beijing China;Yangzhou Power Supply Company State Grid Jiangsu Electric Power Supply Company Yangzhou China;

DOI  :  10.1049/hve2.12128

来源: DOAJ

【 摘 要 】

Abstract Persistent severe smog and dust weather exists in many regions of China. Particles accumulate on the surface of high‐voltage transmission lines, which affects the surface morphology of the transmission line and induces corona discharge. This work mainly studies the influence of electric field and photocatalysis on the corona characteristics of transmission lines. In this work, plasma spraying is used to prepare a dense, smooth and excellent photocatalytic TiO2 coating on the surface of transmission wires. An electron microscope and a white light interference profilometer is used to study the surface condition of the samples. The variation in the surface condition of the samples is observed under different fouling, light time and electric field intensity. The corona characteristics of power transmission lines under different surface conditions are studied. The results show that light and applied electric field promote the photocatalytic effect of TiO2, which helps to decompose the contamination on the surface of power transmission wires and thus reduce the corona discharge of transmission lines. The increase in corona inception voltage reduces the corona current pulse repetition rate and the ion current density during corona discharge.

【 授权许可】

Unknown