Electrical strength reduction of porcelain suspension insulators on AC transmission lines

A. Rawat, R. S. Gorur

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

Porcelain suspension insulators that were in service for up to 38 years on 115-500 kV ac transmission lines were evaluated for residual electrical strength. It was seen that the reduction in electrical strength or aging, was significant for some insulators causing them to puncture. The reasons for the reduction in electrical breakdown strength were investigated using scanning electron microscopy and x-ray diffraction. The marked reduction in electrical breakdown strength with time has been correlated with large number and size of defects in the porcelain microstructure. It has been shown that local field enhancement created by these defects is sufficient to initiate progressive dielectric breakdown that ultimately leads to puncture.

Original languageEnglish (US)
Title of host publicationAnnual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
Pages245-248
Number of pages4
DOIs
StatePublished - 2008
Event2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2008 - Quebec City, QC, Canada
Duration: Oct 26 2008Oct 29 2008

Other

Other2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2008
CountryCanada
CityQuebec City, QC
Period10/26/0810/29/08

Fingerprint

Dental Porcelain
Porcelain
Electric lines
Suspensions
Defects
Electric breakdown
Aging of materials
Diffraction
X rays
Microstructure
Scanning electron microscopy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Cite this

Rawat, A., & Gorur, R. S. (2008). Electrical strength reduction of porcelain suspension insulators on AC transmission lines. In Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP (pp. 245-248). [4772841] https://doi.org/10.1109/CEIDP.2008.4772841

Electrical strength reduction of porcelain suspension insulators on AC transmission lines. / Rawat, A.; Gorur, R. S.

Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP. 2008. p. 245-248 4772841.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Rawat, A & Gorur, RS 2008, Electrical strength reduction of porcelain suspension insulators on AC transmission lines. in Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP., 4772841, pp. 245-248, 2008 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2008, Quebec City, QC, Canada, 10/26/08. https://doi.org/10.1109/CEIDP.2008.4772841
Rawat A, Gorur RS. Electrical strength reduction of porcelain suspension insulators on AC transmission lines. In Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP. 2008. p. 245-248. 4772841 https://doi.org/10.1109/CEIDP.2008.4772841
Rawat, A. ; Gorur, R. S. / Electrical strength reduction of porcelain suspension insulators on AC transmission lines. Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP. 2008. pp. 245-248
@inproceedings{9199d24abf944ef283af96dfd87c3ae3,
title = "Electrical strength reduction of porcelain suspension insulators on AC transmission lines",
abstract = "Porcelain suspension insulators that were in service for up to 38 years on 115-500 kV ac transmission lines were evaluated for residual electrical strength. It was seen that the reduction in electrical strength or aging, was significant for some insulators causing them to puncture. The reasons for the reduction in electrical breakdown strength were investigated using scanning electron microscopy and x-ray diffraction. The marked reduction in electrical breakdown strength with time has been correlated with large number and size of defects in the porcelain microstructure. It has been shown that local field enhancement created by these defects is sufficient to initiate progressive dielectric breakdown that ultimately leads to puncture.",
author = "A. Rawat and Gorur, {R. S.}",
year = "2008",
doi = "10.1109/CEIDP.2008.4772841",
language = "English (US)",
isbn = "9781424425495",
pages = "245--248",
booktitle = "Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP",

}

TY - GEN

T1 - Electrical strength reduction of porcelain suspension insulators on AC transmission lines

AU - Rawat, A.

AU - Gorur, R. S.

PY - 2008

Y1 - 2008

N2 - Porcelain suspension insulators that were in service for up to 38 years on 115-500 kV ac transmission lines were evaluated for residual electrical strength. It was seen that the reduction in electrical strength or aging, was significant for some insulators causing them to puncture. The reasons for the reduction in electrical breakdown strength were investigated using scanning electron microscopy and x-ray diffraction. The marked reduction in electrical breakdown strength with time has been correlated with large number and size of defects in the porcelain microstructure. It has been shown that local field enhancement created by these defects is sufficient to initiate progressive dielectric breakdown that ultimately leads to puncture.

AB - Porcelain suspension insulators that were in service for up to 38 years on 115-500 kV ac transmission lines were evaluated for residual electrical strength. It was seen that the reduction in electrical strength or aging, was significant for some insulators causing them to puncture. The reasons for the reduction in electrical breakdown strength were investigated using scanning electron microscopy and x-ray diffraction. The marked reduction in electrical breakdown strength with time has been correlated with large number and size of defects in the porcelain microstructure. It has been shown that local field enhancement created by these defects is sufficient to initiate progressive dielectric breakdown that ultimately leads to puncture.

UR - http://www.scopus.com/inward/record.url?scp=65949094354&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=65949094354&partnerID=8YFLogxK

U2 - 10.1109/CEIDP.2008.4772841

DO - 10.1109/CEIDP.2008.4772841

M3 - Conference contribution

SN - 9781424425495

SP - 245

EP - 248

BT - Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP

ER -