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Condition evaluation of oil-paper insulation based on dielectric spectroscopy

  • Xi'an Jiaotong University
  • State Grid Corporation of China

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

7 Scopus citations

Abstract

New techniques are necessitated to be introduced for the diagnosis of large oil-immersed power equipments for the disadvantages of traditional methods such as not very good operability and accuracy. The Frequency Domain dielectric Spectroscopy (FDS) for the diagnosis of oil-paper insulation is presented in this paper. Specimens and on-site equipments under different conditions are measured using FDS technique. The tan δ-f curve shifts upwards as the moisture content increases, and the trends are particularly evident in the high and low frequency range. Aging will also result in the increase of dissipation factor due to the byproducts such as water and carboxylic acid. Besides, Temperature has great effect on the dielectric response of the insulation and the tan δ-f curve moves towards high frequency range at elevated temperature. Research shows that the dielectric response in frequency domain can reflect the condition of the insulation and it is hopeful to be considered as an auxiliary method for the diagnosis of oil-paper insulation.

Original languageEnglish
Title of host publicationCEIDP - 2009 Annual Report Conference on Electrical Insulation and Dielectric Phenomena
Pages77-80
Number of pages4
DOIs
StatePublished - 2009
Event2009 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, CEIDP - Virginia Beach, VA, United States
Duration: 18 Oct 200921 Oct 2009

Publication series

NameAnnual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
ISSN (Print)0084-9162

Conference

Conference2009 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
Country/TerritoryUnited States
CityVirginia Beach, VA
Period18/10/0921/10/09

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