Title :
Failure analysis of EHV transformers
Author :
Kogan, V.I. ; Fleeman, J.A. ; Provanzana, J.H. ; Shih, C.H.
Author_Institution :
American Electric Power Service Corp., Columbus, OH, USA
fDate :
4/1/1988 12:00:00 AM
Abstract :
Failure activity of different samples of AEP extra high voltage (EHV) transformers is analyzed using estimations of the time-dependent failure rate. This analysis can be applied to investigation of the failure mechanism of 765 kV transformers. A novel method for the probabilistic estimation of the number of future failures is introduced. Results are compared with those of traditional computations of the number of future failures conducted using different average failure-rate approaches
Keywords :
failure analysis; power transformers; 765 kV; AEP; American Electric Power; EHV transformers; future failure probabilistic estimation; time-dependent failure rate; Costs; Data analysis; Failure analysis; Marketing and sales; Personnel; Power industry; Senior members; Surges; System testing; Transformers;
Journal_Title :
Power Delivery, IEEE Transactions on
