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Effects of oil thermal aged states on the space charge behavior in oil-paper insulation

  • Xi'an Jiaotong University

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

5 Scopus citations

Abstract

In order to understand effects of oil thermal aged state on space charge behaviors in oil-paper insulation further, transformer oil with different aged states is prepared by accelerated thermal aging. What's more analysis on physical and chemical properties of oil is made. The samples are made of new kraft paper which is dried in vacuum and oil with different thermal aged states. The pulsed electro-acoustic (PEA) method is used for space charge measurement under conditions of both voltage-on and voltage-off at room temperature(15° C). The impact of oil aged state on space charge injection, accumulation and decay characters was discussed. The experimental results show homo-charge inject into samples when the voltage is on. The more the oil aged state is, the larger the total space charges quantity and the area of negative charges. For voltage-off condition, aged oil-paper samples are beneficial to space charge decay.

Original languageEnglish
Title of host publicationICPADM 2012 - 2012 IEEE 10th International Conference on the Properties and Applications of Dielectric Materials, Technical Papers
DOIs
StatePublished - 2012
Event2012 IEEE 10th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2012 - Bangalore, India
Duration: 24 Jul 201228 Jul 2012

Publication series

NameProceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials

Conference

Conference2012 IEEE 10th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2012
Country/TerritoryIndia
CityBangalore
Period24/07/1228/07/12

Keywords

  • oil aged states
  • oil-paper insulation
  • pulsed electro-acoustic (PEA)
  • space charge

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