DocumentCode
13200
Title
Insulation condition monitoring of epoxy spacers in GIS using a decomposed gas CS2
Author
Jun Chen ; Wenjun Zhou ; Jianhui Yu ; Qi Su ; Xiaoguang Zheng ; Yongyan Zhou ; Li Li ; Wejian Yao ; Baoshan Wang ; Hui Hu
Author_Institution
Sch. of Electr. Eng., Wuhan Univ., Wuhan, China
Volume
20
Issue
6
fYear
2013
fDate
Dec-13
Firstpage
2152
Lastpage
2157
Abstract
The epoxy spacers in SF6 Gas Insulated Switchgear (GIS) are vulnerable to discharge. Once the surface of the epoxy spacers is deteriorated under discharge, insulation break down may occur subsequently. From a number of experiments carried out on 110 kV GIS, a new gas CS2 was detected when creeping discharges occur on the epoxy spacer surface. In order to verify the correlation between CS2 and the degradation of epoxy spacers, the quantum chemistry analysis was used to investigate the mechanism of CS2 development. Based on the results, the relation between CS2 and spacer insulation degradation was determined.
Keywords
carbon compounds; chemical variables measurement; chromatography; condition monitoring; decomposition; discharges (electric); epoxy insulation; gas insulated switchgear; quantum chemistry; sulphur compounds; CS2; SF6; creeping discharge; decomposed gas; electric discharge; epoxy spacer degradation; gas insulated switchgear; insulation breakdown; insulation condition monitoring; quantum chemistry analysis; spacer insulation degradation; voltage 110 kV; Condition monitoring; Degradation; Discharges (electric); Partial discharges; Sulfur hexafluoride; CS2; GIS; condition monitoring; degradation; discharge; epoxy spacer;
fLanguage
English
Journal_Title
Dielectrics and Electrical Insulation, IEEE Transactions on
Publisher
ieee
ISSN
1070-9878
Type
jour
DOI
10.1109/TDEI.2013.6678864
Filename
6678864
Link To Document