Aging of oil-impregnated paper at different frequencies

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Abstract

In this work, breakdown strength and lifetime curve of oil-impregnated paper (OIP) are compared at 50Hz and 1500 Hz. For the ramp breakdown tests, sinusoidal voltage ramp of 1 kVp/s is used. The ramp breakdown experiments is conducted on OIP samples made of single and double sheets of OIP. Weibull plots and interpretation of the results are presented. In order to obtain lifetime curves, a step sinusoidal voltage waveform whose peak value is close to the minimum OIP ramp breakdown voltage is applied on single sheet of OIP samples. Time to breakdown is measured, and each experiment is repeated between 20-30 times to obtain good statistical results. The experiments were focused on four different voltage levels and the lifetime curves are plotted for those two target frequencies. Parameters of the lifetime curves are extracted and the interpretation is given.

Original languageEnglish
Title of host publication13th International Conference on the Properties and Applications of Dielectric Materials
Subtitle of host publicationEmerging Dielectrics for Energy Sustainability, ICPADM 2021
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages430-433
Number of pages4
ISBN (Electronic)9781728182384
DOIs
Publication statusPublished - 2021
Event13th IEEE International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2021 - Virtual, Online
Duration: 12 Jul 202114 Jul 2021

Publication series

NameProceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials
Volume2021-July

Conference

Conference13th IEEE International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2021
CityVirtual, Online
Period12/07/2114/07/21

Keywords

  • aging
  • breakdown voltage
  • high frequency electric stress
  • lifetime curve
  • Oil-impregnated paper

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