DocumentCode
2316728
Title
Assessment of thermal aging of HVDC converter transformer insulation
Author
Grant, D.H. ; McDermid, W.
Author_Institution
Manitoba Hydro, Winnipeg, Man., Canada
fYear
2004
fDate
19-22 Sept. 2004
Firstpage
230
Lastpage
232
Abstract
An HVDC converter transformer was removed from service and salvaged after 24 years of service. It had not experienced an in-service failure, although others from the same family had failed as a result of overheating. The salvage of the transformer provided an opportunity to observe signs of overheated cellulose, to take paper samples for DP measurements, and to assess the mechanical strength of the bonded CTC.
Keywords
HVDC power convertors; ageing; insulation testing; mechanical strength; polymerisation; power transformer insulation; power transformer testing; thermal insulation; DP measurement; HVDC converter transformer insulation; bonded CTC; continuously transposed conductor; degree of polymerization measurements; mechanical strength; overheated cellulose; thermal aging; Aging; Bonding; Coils; HVDC transmission; Leg; Oil insulation; Petroleum; Power transformer insulation; Transformer cores; Valves;
fLanguage
English
Publisher
ieee
Conference_Titel
Electrical Insulation, 2004. Conference Record of the 2004 IEEE International Symposium on
ISSN
1089-084X
Print_ISBN
0-7803-8447-4
Type
conf
DOI
10.1109/ELINSL.2004.1380535
Filename
1380535
Link To Document