DocumentCode
1544571
Title
Corrosion in HVDC valve cooling systems
Author
Jackson, P.O. ; Abrahamsson, B. ; Gustavsson, D. ; Igetott, L.
Author_Institution
ABB Power Syst., Sweden
Volume
12
Issue
2
fYear
1997
fDate
4/1/1997 12:00:00 AM
Firstpage
1049
Lastpage
1052
Abstract
Stainless steel couplings in the main cooling water pipes of HVDC thyristor valves have been in use since 1983, with overall satisfactory behavior. However, some water leakage due to corrosion below the sealing O-rings of the couplings was observed during 1992. An extensive investigation and follow-up worldwide showed a direct correlation between water quality and the corrosion rate of these stainless steel couplings. Recommendations are given as to actions to be taken in order to maintain a long lifetime for the fine water systems
Keywords
HVDC power transmission; cooling; corrosion testing; maintenance engineering; seals (stoppers); stainless steel; thyristor applications; HVDC thyristor valves; cooling water pipes; corrosion rate; corrosion studies; maintenance recommendations; sealing O-rings; stainless steel couplings; water leakage; water quality; Cooling; Corrosion; Couplings; HVDC transmission; Resins; Steel; Structural rings; Thyristors; Valves; Water heating;
fLanguage
English
Journal_Title
Power Delivery, IEEE Transactions on
Publisher
ieee
ISSN
0885-8977
Type
jour
DOI
10.1109/61.584437
Filename
584437
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