Substation distribution transformers failures and spares

Author

Kogan, V.I. ; Roeger, C.J. ; Tipton, D.E.

Author_Institution

American Electr. Power Service Corp., Columbus, OH, USA

Volume

11

Issue

4

fYear

1996

fDate

11/1/1996 12:00:00 AM

Firstpage

1905

Lastpage

1912

Abstract

Electric utilities should have a sufficient number of spare transformers to backup substation distribution transformers to replace transformers that fail and require factory rebuild or replacement. To identify such a number, the statistical methodology was developed to analyze available failure data for different groups of transformer. That methodology enables the estimation of future numbers of failures with associated probabilities, recommends the proper number of spares, identifies the necessity and shows the means to shorten the transformer´s replacement time

Keywords

distribution networks; failure analysis; probability; statistical analysis; transformer substations; failure data analysis; failure probabilities; spare transformers; statistical methodology; substation distribution transformers; transformer repair; transformer replacement; transformers failures; Cost function; Failure analysis; Power industry; Power supplies; Power system reliability; Production facilities; Senior members; Statistical analysis; Substations; Transformers;

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/59.544662

Filename

544662