Lightning impulse breakdown performance of an inhibited Gas-To-Liquid (GTL) hydrocarbon transformer oil

W. Lu, Q. Liu, Z. D. Wang, P. W R Smith

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

    Abstract

    © 2014 IEEE.In this paper, breakdown voltages and acceleration voltages of an inhibited Gas-To-Liquid (GTL) based transformer oil were investigated under both positive and negative lightning impulse voltages. A conventional inhibited mineral oil was also tested as a benchmark. Both point-sphere and point-plane configurations were used. Rising voltage method was used to conduct the breakdown tests, and the breakdown voltage was obtained as the average of ten tests. Results show that both positive and negative impulse breakdown voltages of the GTL based oil are higher than those of the conventional mineral oil. This is thought to be due to the significantly lower aromatic content in the GTL based oil, since aromatic molecules tend to have low ionization potentials that promote the positive streamer propagation and electron scavenging properties that accelerate the negative streamer propagation. In addition, the paper also discusses streamer propagation velocity and acceleration voltages of the GTL based oil under both positive and negative polarities.
    Original languageEnglish
    Title of host publicationProceedings of the 2014 IEEE 18th International Conference on Dielectric Liquids, ICDL 2014|Proc. IEEE Int. Conf. Dielectr. Liquids, ICDL
    PublisherIEEE
    Pages1-4
    Number of pages4
    ISBN (Print)9781479920631
    DOIs
    Publication statusPublished - 2014
    Event2014 IEEE 18th International Conference on Dielectric Liquids, ICDL 2014 - Bled
    Duration: 1 Jul 2014 → …

    Conference

    Conference2014 IEEE 18th International Conference on Dielectric Liquids, ICDL 2014
    CityBled
    Period1/07/14 → …

    Keywords

    • acceleration voltage
    • breakdown voltage
    • gas-to-liquid
    • GTL
    • Lightning impulse
    • transformer oil

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