Flashover mechanism of silicone rubber insulators used for outdoor insulation - II

Minesh Shah, George G. Karady, R. L. Brown

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

Flashover mechanisms of silicone rubber used for outdoor insulation is presented and experimentally proven. A hydrophobic surface of silicone rubber wets and accumulates contaminants differently compared to conventional porcelain and glass insulators. This suggests that the flashover mechanism of silicone rubber insulators is different than porcelain and glass. This paper (Part II) experimentally investigates ohmic heating, electrical field caused interaction between water droplets, generation of conductive regions and filaments, field intensification caused spot discharges and the ultimate flashover of silicone rubber along wetted filaments. These studies have resulted in a new flashover mechanism which provides a better understanding of silicone rubber outdoor insulators and their excellent contamination performance. These results will be used for the development of a better laboratory test procedure to evaluate composite insulators' performance in contaminated conditions.

Original languageEnglish (US)
Pages (from-to)1972-1978
Number of pages7
JournalIEEE Transactions on Power Delivery
Volume10
Issue number4
DOIs
StatePublished - Oct 1995

Fingerprint

Flashover
Silicones
Insulation
Rubber
Porcelain
Glass
Joule heating
Contamination
Impurities
Composite materials
Water

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Flashover mechanism of silicone rubber insulators used for outdoor insulation - II. / Shah, Minesh; Karady, George G.; Brown, R. L.

In: IEEE Transactions on Power Delivery, Vol. 10, No. 4, 10.1995, p. 1972-1978.

Research output: Contribution to journalArticle

Shah, Minesh ; Karady, George G. ; Brown, R. L. / Flashover mechanism of silicone rubber insulators used for outdoor insulation - II. In: IEEE Transactions on Power Delivery. 1995 ; Vol. 10, No. 4. pp. 1972-1978.
@article{18d6d874ffda4aef9f39a49c2cdb9c07,
title = "Flashover mechanism of silicone rubber insulators used for outdoor insulation - II",
abstract = "Flashover mechanisms of silicone rubber used for outdoor insulation is presented and experimentally proven. A hydrophobic surface of silicone rubber wets and accumulates contaminants differently compared to conventional porcelain and glass insulators. This suggests that the flashover mechanism of silicone rubber insulators is different than porcelain and glass. This paper (Part II) experimentally investigates ohmic heating, electrical field caused interaction between water droplets, generation of conductive regions and filaments, field intensification caused spot discharges and the ultimate flashover of silicone rubber along wetted filaments. These studies have resulted in a new flashover mechanism which provides a better understanding of silicone rubber outdoor insulators and their excellent contamination performance. These results will be used for the development of a better laboratory test procedure to evaluate composite insulators' performance in contaminated conditions.",
author = "Minesh Shah and Karady, {George G.} and Brown, {R. L.}",
year = "1995",
month = "10",
doi = "10.1109/61.473355",
language = "English (US)",
volume = "10",
pages = "1972--1978",
journal = "IEEE Transactions on Power Delivery",
issn = "0885-8977",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "4",

}

TY - JOUR

T1 - Flashover mechanism of silicone rubber insulators used for outdoor insulation - II

AU - Shah, Minesh

AU - Karady, George G.

AU - Brown, R. L.

PY - 1995/10

Y1 - 1995/10

N2 - Flashover mechanisms of silicone rubber used for outdoor insulation is presented and experimentally proven. A hydrophobic surface of silicone rubber wets and accumulates contaminants differently compared to conventional porcelain and glass insulators. This suggests that the flashover mechanism of silicone rubber insulators is different than porcelain and glass. This paper (Part II) experimentally investigates ohmic heating, electrical field caused interaction between water droplets, generation of conductive regions and filaments, field intensification caused spot discharges and the ultimate flashover of silicone rubber along wetted filaments. These studies have resulted in a new flashover mechanism which provides a better understanding of silicone rubber outdoor insulators and their excellent contamination performance. These results will be used for the development of a better laboratory test procedure to evaluate composite insulators' performance in contaminated conditions.

AB - Flashover mechanisms of silicone rubber used for outdoor insulation is presented and experimentally proven. A hydrophobic surface of silicone rubber wets and accumulates contaminants differently compared to conventional porcelain and glass insulators. This suggests that the flashover mechanism of silicone rubber insulators is different than porcelain and glass. This paper (Part II) experimentally investigates ohmic heating, electrical field caused interaction between water droplets, generation of conductive regions and filaments, field intensification caused spot discharges and the ultimate flashover of silicone rubber along wetted filaments. These studies have resulted in a new flashover mechanism which provides a better understanding of silicone rubber outdoor insulators and their excellent contamination performance. These results will be used for the development of a better laboratory test procedure to evaluate composite insulators' performance in contaminated conditions.

UR - http://www.scopus.com/inward/record.url?scp=0029388463&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0029388463&partnerID=8YFLogxK

U2 - 10.1109/61.473355

DO - 10.1109/61.473355

M3 - Article

VL - 10

SP - 1972

EP - 1978

JO - IEEE Transactions on Power Delivery

JF - IEEE Transactions on Power Delivery

SN - 0885-8977

IS - 4

ER -