NDLI: Experimental study for SF6 decomposition byproducts formation mechanisms in 50Hz AC corona discharge and flashover

Content Provider	IEEE Xplore Digital Library
Author	Lin, T. Han, D. Jin, X. Zhang, G.Q.
Copyright Year	2013
Description	Author affiliation: Inst. of Electr. Eng., Beijing, China (Lin, T.; Han, D.; Jin, X.; Zhang, G.Q.)
Abstract	As an excellent insulating medium, Sulfur hexafluoride $(SF_{6})$ has been widely used in gas-insulated equipment. With the increase of $SF_{6}-insulated$ equipment applying in ultra-high voltage or extra-high voltage power grids, the tools that can efficiently diagnosis electrical insulation faults are explored. Previous researches and actual operation experiences have shown that $SF_{6}$ gaseous decomposition byproducts are directly related to the insulation faults. Therefore, nowadays the analysis on gaseous decomposition by-products has been regarded as a powerful tool in diagnosing the internal condition of $SF_{6}-insulated$ equipment. In this paper, the experiments regarding to two different types of insulation faults are carried out, including corona discharge and flashover. In the experiments, the electrode was set to point-plane electrode, and the total gas pressure was set to 200kPa. In addition, eight gaseous decomposition by-products are taken into account, that is, $SOF_{2},$ $SO_{2}F_{2},$ $SO_{2},$ $H_{2}S,$ COS, $CS_{2},$ $CF_{4}$ and $CO_{2}.$ As a source of information on identification of discharges, the contents of the gaseous decomposition by-products were measured by gas chromatograph-mass spectrometer system (GCMS). The results of the experiments show that the contents are apparently different, though the gaseous decomposition by-products under the two discharge types are similar. Based on the results of phenomenological observations, the decomposition mechanisms leading to the formation of decomposition by-products in various modes of electrical discharges are analyzed. In particular, applied voltage and corona inception voltage are proposed to assess electrical field intensity in the glow region of corona discharge. Finally, the identification criteria under two discharge types are introduced, which can effectively distinguish the two discharge types.
Sponsorship	IEEE Dielectr. Electr. Insul. Soc.
Starting Page	1221
Ending Page	1224
File Size	509483
Page Count	4
File Format	PDF
ISBN	9781479925971
DOI	10.1109/CEIDP.2013.6748166
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-10-20
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Corona Discharges (electric) Sulfur hexafluoride Flashover Voltage measurement Electrodes
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Onset corona discharge voltages in SF6-N2 gas mixtures at higher gas pressures

Experimental study on SF6 decomposition characteristics under spark discharges

Non-uniform field breakdown characteristics of SF6/CF4 mixtures at various pressures

Study of the decomposition of c-C4F8 and its mixture with N2 under 50Hz ac corona discharge

Corona Discharge Mechanism and Breakdown Voltage Characteristics from Metallic Floating Particle in SF6 Gas under dc Voltage

Partial discharge characteristics of void defect in SF6 under stepped AC voltage

Study on the relationship between decomposition characteristic components of SF6 and partial discharge quantities

PD detection under impulse voltage on an actual SF6 bus section with protrusion defects fixed on HV conductor

AC Corona and Breakdown Characteristics for Rod Gaps in Compressed Hydrogen, SF6 AND Hydrogen-SF6 Mixtures

Experimental study for SF6 decomposition byproducts formation mechanisms in 50Hz AC corona discharge and flashover

Similar Documents

Onset corona discharge voltages in SF6-N2 gas mixtures at higher gas pressures

Experimental study on SF6 decomposition characteristics under spark discharges

Non-uniform field breakdown characteristics of SF6/CF4 mixtures at various pressures

Study of the decomposition of c-C4F8 and its mixture with N2 under 50Hz ac corona discharge

Corona Discharge Mechanism and Breakdown Voltage Characteristics from Metallic Floating Particle in SF6 Gas under dc Voltage

Partial discharge characteristics of void defect in SF6 under stepped AC voltage

Study on the relationship between decomposition characteristic components of SF6 and partial discharge quantities

PD detection under impulse voltage on an actual SF6 bus section with protrusion defects fixed on HV conductor

AC Corona and Breakdown Characteristics for Rod Gaps in Compressed Hydrogen, SF6 AND Hydrogen-SF6 Mixtures

Experimental study for SF6 decomposition byproducts formation mechanisms in 50Hz AC corona discharge and flashover