DocumentCode
769132
Title
Suppression of slot discharges in a cable wound generator
Author
Touma-Holmberg, Marguerite ; Hjarne, Stig
Author_Institution
Alstom Power, Vasteras, Sweden
Volume
18
Issue
3
fYear
2003
Firstpage
458
Lastpage
465
Abstract
This paper presents a detailed mathematical study to calculate the distribution of the voltages and currents developed on the semiconducting layer of the cable having many points of contact with the stator slot wall and an insulating/semiconducting fixation hose. The calculations are verified experimentally on the world´s first high-voltage turbo Powerformer installed in Eskilstuna, Sweden, and rated at 136 kV and 42 MVA.
Keywords
discharges (electric); machine insulation; power cable insulation; power cables; power transformers; stators; synchronous generators; 136 kV; 42 MVA; Eskilstuna; Sweden; cable wound generator; currents distribution calculation; high-voltage turbo Powerformer; insulating/semiconducting fixation hose; semiconducting layer; slot discharges suppression; stator slot wall; synchronous machine; voltages distribution calculation; Cable insulation; Coatings; Conductors; Dielectrics and electrical insulation; Power cable insulation; Power cables; Semiconductivity; Stators; Voltage; Wounds;
fLanguage
English
Journal_Title
Energy Conversion, IEEE Transactions on
Publisher
ieee
ISSN
0885-8969
Type
jour
DOI
10.1109/TEC.2003.815855
Filename
1223615
Link To Document