Substation distribution transformers failures and spares

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...

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Bibliographic Details
Published in:	IEEE transactions on power systems Vol. 11; no. 4; pp. 1905 - 1912
Main Authors:	Kogan, V.I., Roeger, C.J., Tipton, D.E.
Format:	Journal Article Conference Proceeding
Language:	English
Published:	New York, NY IEEE 01-11-1996 Institute of Electrical and Electronics Engineers
Subjects:	Applied sciences Cost function Electrical engineering. Electrical power engineering Electrical power engineering Exact sciences and technology Failure analysis Power industry Power networks and lines Power supplies Power system reliability Production facilities Senior members Statistical analysis Substations Transformers Statistical method Substation System maintenance Prediction Power transformer Failures Chi square Distribution system
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Summary:	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.
Bibliography:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23
ISSN:	0885-8950 1558-0679
DOI:	10.1109/59.544662