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    •   MOspace Home
    • University of Missouri-Columbia
    • Graduate School - Theses and Dissertations (MU)
    • Theses and Dissertations (MU)
    • Dissertations (MU)
    • 2012 Dissertations (MU)
    • 2012 MU dissertations - Freely available online
    • View Item
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    Experimental and Simulation Analysis of the Jitter Response of a Single-Shot Oil Switch with a High-K Particle Suspension

    Yeckel, Christopher
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    [PDF] short.pdf (74.65Kb)
    Date
    2012
    Format
    Thesis
    Metadata
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    Abstract
    This dissertation investigates an oil switching system to address and reduce the jitter observed in the breakdown electric field strength of a pressurized, oil dielectric. The experimental work is conducted in two phases, the first of which examines the effects of oil chemistry on breakdown statistics, and the second of which considers the effects of high-K particle additions to the best-performing fluids. A single-shot high voltage advanced dielectric test stand (HVADTS) was designed and built to test these oils. The HVADTS is capable of applying a 250 kV pulse with a 1-cos rise-time of 1.6 us to a pressurized oil dielectric. Numerous oil chemistries were evaluated, including straight-chain hydrocarbons and branched olefins, silicone and ester fluids, alkylbenzene and transformer oil. Following the oil chemistry evaluation, a high-K particle dielectric was added in concentrations up to 5 % (by weight) to the best-performing fluids. Parameters such as particle concentration, gap spacing, electrode surface conditions and ambient fluid pressure are investigated experimentally. The experimental analysis is supported by PIC electrostatic simulations and a suite of diagnostics such as SEM imagery, optical profilometry, water titration, mass-spectrometry, and particle measurements. This dissertation discusses several methods to successfully reduce the switch jitter of a self-break oil switch.
    URI
    https://hdl.handle.net/10355/46131
    Degree
    Ph. D.
    Thesis Department
    Electrical engineering (MU)
    Collections
    • 2012 MU dissertations - Freely available online
    • Electrical Engineering and Computer Science electronic theses and dissertations (MU)

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