An explanation for the decline in URD cable failures and associated nonhomogeneous Poisson process

Author

Kogan, V.I. ; Jones, T.L.

Author_Institution

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

Volume

9

Issue

1

fYear

1994

fDate

1/1/1994 12:00:00 AM

Firstpage

534

Lastpage

543

Abstract

The possible need to remove from service approximately 2000 miles of high molecular weight polyethylene URD cable has been a topic of concern at American Electric Power. Earlier projections indicated that failures would increase at an exponential rate and that a typical section of cable would be replaced prior to reaching 30 years of age. However, data analysis shows a downward trend in failures after a cable system has been operating for about 18 years. A possible explanation for this finding is the elimination of cable defects through the failure repair (splicing) process. The authors´ findings suggest that, in addition to age and failure history, the decision to remove a cable section from service should be based on the condition of the cable after repair

Keywords

cable insulation; failure analysis; organic insulating materials; power cables; underground cables; underground residential distribution systems; American Electric Power; URD cable failures decline; cable defects elimination; cable repair; cable replacement; cable splicing; failure repair process; high molecular weight polyethylene URD cable; nonhomogeneous Poisson process; underground residential distribution; Aging; Communication cables; Condition monitoring; Conductors; Data analysis; History; Insulation; Polyethylene; Senior members; Splicing;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.277726

Filename

277726