NDLI: Effects of voltage forms, pressure, and adsorbent on the SF6 decomposition characteristics under corona discharge

Content Provider	IET Digital Library
Author	Zhong, Lipeng Liu, Kai Ji, Shengchang Wang, Feng Sun, Qiuqin Chen, She Liu, Jie
Abstract	An experimental and testing platform was established to comparative study the decomposition characteristic of SF6 under different voltage waveform (negative direct current (DC) voltage, positive DC voltage, and alternating voltage), and investigate the influence of pressure and adsorbent. Content variation of typical products under different conditions and the influence mechanism were observed and analysed in detail. The results indicate that SF6 decomposition characteristics are closely related to a voltage waveform, pressure, and adsorbent. Concentrations of by-products under AC voltage are higher than those under DC voltage and SF6 decomposes more easily under positive voltage than negative voltage, which can be explained by different discharge energy and distribution characteristic of space charges. The values of typical products show an obvious downward trend with pressure due to falling discharge energy, volume of active region and dissociation rate of SF6. Concentrations of typical products including SOF2, SO2F2, and SO2 decrease dramatically after adding adsorbents because of physical absorption and chemisorption.
Starting Page	486
Ending Page	493
Page Count	8
ISSN	17518822
Volume Number	14
e-ISSN	17518830
Issue Number	Issue 4, Jun (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-smt/14/4
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-smt.2019.0326
Journal	IET Science, Measurement & Technology
Publisher Date	2020-01-03
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Absorption AC Voltage Adsorbent Alternating Voltage Biodegradable Materials Chemisorption Corona Corona Discharge DC Voltage Dielectric Material Discharge Energy Discharges (electric) Distribution Characteristic Engineering Material Environmental Issues Experimental Testing Platform Gaseous Dielectric Material Gaseous Insulation, Breakdown And Discharges Insulating Material Insulation Defects Insulation Degradation Material Property Pressure SF6 Decomposition Characteristic Voltage Waveform
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Electrical and Electronic Engineering

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