Partial discharge inference by an advanced system. Analysis of online measurements performed on hydrogenerator

Author

Borghetto, Johnny ; Cavallini, Andrea ; Contin, Alfredo ; Montanari, Gian Carlo ; De Nigris, Michel ; Pasini, Gaetano ; Passaglia, Renzo

Author_Institution

Centro Elettrotecnico Sperimentale Italiano, Milano, Italy

Volume

19

Issue

2

fYear

2004

fDate

6/1/2004 12:00:00 AM

Firstpage

333

Lastpage

339

Abstract

A new system aimed at performing partial discharge measurements and condition assessment on electrical apparatus is presented. It is able to separate the conventional phase resolved partial discharge pattern into a series of sub-patterns, each of them containing partial discharge data generated by a single kind of defect, which makes easier identification of the source generating partial discharges. Application of the system to partial discharge data recorded on an hydrogenerator is reported to support its effectiveness.

Keywords

electric machine analysis computing; fault location; hydroelectric generators; inference mechanisms; partial discharges; diagnostic expert system; fault diagnosis; fault location; hydrogenerators; online measurements; partial discharge inference; Condition monitoring; Degradation; Delamination; Dielectrics and electrical insulation; Fault location; Maintenance; Partial discharge measurement; Partial discharges; Performance analysis; Performance evaluation; Diagnostic expert system; fault diagnosis; fault location; generators; insulation; partial discharges;

fLanguage

English

Journal_Title

Energy Conversion, IEEE Transactions on

Publisher

ieee

ISSN

0885-8969

Type

jour

DOI

10.1109/TEC.2004.827473

Filename

1300698