Title :
Analysis of winding failures in HVDC converter transformers
Author :
McDermid, W. ; Glodjo, A. ; Bromley, J.C.
Author_Institution :
Manitoba Hydro, Winnipeg, Man., Canada
fDate :
6/21/1905 12:00:00 AM
Abstract :
In spite of periodic off-line electrical tests and on-line gas-in-oil analysis, three HVDC converter transformers have failed within a 12-month period. The possible causes of failure are reviewed together with changes in maintenance, monitoring and system operation that might prolong the life of similar transformers
Keywords :
HVDC power convertors; failure analysis; insulation testing; power transformer insulation; power transformers; transformer oil; transformer windings; HVDC converter transformers; maintenance; monitoring; off-line electrical tests; on-line gas-in-oil analysis; single phase transformer; system operation; three phase transformer; winding failures analysis; Clamps; Dissolved gas analysis; Failure analysis; HVDC transmission; Inverters; Petroleum; Rectifiers; Thyristors; Transformer cores; Valves;
Conference_Titel :
Electrical Insulation Conference and Electrical Manufacturing & Coil Winding Conference, 1999. Proceedings
Conference_Location :
Cincinnati, OH
Print_ISBN :
0-7803-5757-4
DOI :
10.1109/EEIC.1999.826288
