NDLI: Effects of structure and material of polluted insulators on the wetting characteristics

Content Provider	IET Digital Library
Author	Yang, Lin Bi, Jikai Zhang, Fei Hao, Yanpeng Li, Licheng Liao, Yifan Zhang, Fuzeng
Abstract	Umbrella-type structure, the material of insulators and surface positions influence the wetting process of polluted insulator surfaces tremendously. Using a custom-made phase-angle-difference (PAD) detection device, the PAD of the different positions of different polluted insulators is measured, and the PAD curves and partial pollution surface electrical conductivity γ 20 varying with time are plotted. The results show that there is a certain difference in the wetting characteristics of different positions. The saturated wetting time of different positions of LXAY-70 insulators is 12.5–15 min; that for LXHY5-70 insulators is 12–25 min; that for XWP2-70 insulators is 8–14 min; and that for FXBW-10/70 insulators is 18–26.5 min. The umbrella-type structure is shown to have a direct effect on the wetting process of polluted insulators. The complicated umbrella-type structure, especially the existence of umbrella ribs, causes an uneven degree of wetting between the upper and lower surfaces, and leads to the increase of the difference in wetting state between the different positions. Furthermore, there is a certain difference in the wetting speed of insulators comprised of different materials. Hydrophilic porcelain and glass insulators are more easily wetted than composite insulators, even though the hydrophobicity class of composite insulators is 7.
Starting Page	131
Ending Page	138
Page Count	8
ISSN	17518822
Volume Number	13
e-ISSN	17518830
Issue Number	Issue 2, Mar (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-smt/13/2
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-smt.2018.5069
Journal	IET Science, Measurement & Technology
Publisher Date	2018-09-25
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Complicated Umbrella-type Structure Composite Insulators Connector Different Polluted Insulators Different Positions Flashover FXBW-10/70 Insulator Glass Insulator Hydrophilic Porcelain Hydrophobicity Insulator Insulator Contamination Insulator Testing Insulator Wetting Speed Lower SurFace LXAY-70 Insulator LXHY5-70 Insulator Partial Pollution Surface Electrical Conductivity Phase-angle-difference Polluted Insulator SurFace Power Line Supports Surface Positions Time 12.0 Min to 25.0 Min Time 18.0 Min to 26.5 Min Time 8.0 Min to 14.0 Min Umbrella Ribs Umbrella-type Structure Upper SurFace Wetting Wetting Characteristic Wetting Process Wetting State Wetting Time XWP2-70 Insulator
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Electrical and Electronic Engineering

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