IEEE Task Force Report: Brittle Fracture in Nonceramic Insulators

Author

Burnham, J. T. ; Baker, T. ; Bernstorf, A. ; de Tourreil, C. ; George, Jinto ; Gorur, Ravi ; Hartings, R. ; Hill, B. ; Jagtiani, Akshay ; McQuarrie, T. ; Mitchell, David ; Ruff, D. ; Schneider, H. ; Shaffner, D. ; Yu, Jinpeng ; Varner, J.

Author_Institution

NGK-Locke, Inc.; K-Line Insulators USA, Inc.; Hubbell Power Systems; Consultant; Sediver; Arizona State University; STRI; Maclean Power Systems; American Electric Power; Glasforms, Inc.; Alabama Power; Bonneville Power Administration

Volume

22

Issue

5

fYear

2002

fDate

5/1/2002 12:00:00 AM

Firstpage

71

Lastpage

71

Abstract

A description of the composite insulator brittle fracture phenomenon suitable to allow correct diagnosis of a failure is provided. The paper reports on the number of brittle fractures that have occurred around the world and contains specific empirical data surrounding composite insulator brittle fractures in the United States. It also includes several case studies of in service failures to inform the reader of the diversity of initiating causes. The current state of knowledge on the brittle fracture mechanism is presented. Based on what was learned during the study, possible actions that can be taken by manufacturers and users to reduce frequency of occurrence are suggested.

Keywords

Analytical models; Context modeling; Dielectrics and electrical insulation; EMTP; Frequency; Load modeling; Power cables; Power system harmonics; Power system modeling; Power systems; Brittle fracture; EDX; SEM; fiberglass rod; insulator; nonceramic; seal; stress corrosion;

fLanguage

English

Journal_Title

Power Engineering Review, IEEE

Publisher

ieee

ISSN

0272-1724

Type

jour

DOI

10.1109/MPER.2002.4312228

Filename

4312228