Use of a mixed-Weibull distribution for the identification of PD phenomena [corrected version]

Author

Cacciari, Matteo ; Contin, Alfredo ; Montanari, Gian

Author_Institution

Trieste Univ.

Volume

2

Issue

6

fYear

1995

fDate

12/1/1995 12:00:00 AM

Firstpage

1166

Lastpage

1179

Abstract

The interaction between partial discharge (PD) phenomena occurring in insulating systems is investigated in this paper. In particular, the recognition of two PD phenomena simultaneously active is approached by means of a 5-parameter additive Weibull distribution. Various shapes of the PD height distribution, obtained from measurements performed on specimens of stator bars and windings of ac rotating machines, are considered. It is shown that the proposed probability function fits well the partial discharge height distributions. The probability distribution relevant to each concurring PD phenomenon can be derived, analyzed and identified. Moreover, the standard average quantities are estimated for each phenomenon

Keywords

AC machines; Weibull distribution; insulation testing; machine insulation; machine testing; partial discharges; stators; PD phenomena identification; ac rotating machines; additive Weibull distribution; height distribution; insulating systems; mixed-Weibull distribution; probability function; stator bars; Insulation; Machine windings; Partial discharge measurement; Partial discharges; Performance evaluation; Rotation measurement; Shape measurement; Stator bars; Stator windings; Weibull distribution;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/94.484322

Filename

484322