DocumentCode
3059240
Title
Suitability of N2-SF6 gas mixtures for the application at gas insulated transmission lines GIL
Author
Schoeffner, G. ; Graf, R.
Author_Institution
Siemens AG, Erlangen, Germany
Volume
2
fYear
2003
fDate
23-26 June 2003
Abstract
In gas insulated transmission lines (GIL) for insulation purposes N2-SF6 gas mixtures are applied because of economical and ecological reasons. With the different mixtures the same intrinsic strength for quasihomogeneous fields like pure SF6 can be achieved by an increase of the gas pressure. However, concerning the sensitivity to defects or the surface roughness the individual mixtures have different properties. In addition the detectability of defects by PD measurements is different Therefore the range of the SF6 content of the mixtures which are suitable for the application in GIL is limited.
Keywords
SF6 insulation; gas insulated transmission lines; gas mixtures; insulation testing; nitrogen compounds; partial discharge measurement; surface roughness; GIL; N2-SF6; PD measurement; ecological reason; economical reason; gas insulated transmission line; gas mixture; gas pressure; intrinsic strength; quasi homogeneous field; sensitivity; surface roughness; Dielectrics and electrical insulation; Gas insulated transmission lines; Gas insulation; Ionization; Linear approximation; Power generation economics; Rough surfaces; Sulfur hexafluoride; Surface roughness; Transmission line measurements;
fLanguage
English
Publisher
ieee
Conference_Titel
Power Tech Conference Proceedings, 2003 IEEE Bologna
Print_ISBN
0-7803-7967-5
Type
conf
DOI
10.1109/PTC.2003.1304299
Filename
1304299
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