High voltage subnanosecond breakdown

Mańkowski, J.; Dickens, J.; Kristiansen, M.

doi:10.1109/27.700858

Cited by 56 publications

(36 citation statements)

References 6 publications

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“…A polarity effect on breakdown was observed in [8] when transformer oil was tested in a point-plane geometry. The breakdown strength was found to be ~50% higher for a negative point than a positive point at short breakdown times (1-2.5 ns).…”

Section: Introductionmentioning

confidence: 99%

Breakdown of mineral oil: Effect of electrode geometry and rate of voltage rise

Wilson

Timoshkin

Given

et al. 2012

IEEE Trans. Dielect. Electr. Insul.

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This version is available at https://strathprints.strath.ac.uk/41665/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the Strathprints administrator: strathprints@strath.ac.ukThe Strathprints institutional repository (https://strathprints.strath.ac.uk) is a digital archive of University of Strathclyde research outputs. It has been developed to disseminate open access research outputs, expose data about those outputs, and enable the management and persistent access to Strathclyde's intellectual output. Breakdown of Mineral ABSTRACTExperimental data on the propagation of streamers in mineral oil is important for the design of high-voltage systems in the power and pulsed-power industries. In the present study, breakdown voltages and pre-breakdown delay times were measured for planeparallel electrodes, and for two non-uniform electrode arrangements. For each geometry, the breakdown characteristics were determined for impulses of rise-time 100 ns, and also rise-time 1 s. The maximum rate of voltage rise (dV/dt) was 4 MV/µs. For the non-uniform geometries with inter-electrode gap length of 8.5 mm, the time to breakdown was 2.5-3 times longer for impulses of rise-time 1 s than for 100 ns risetime. The time-to-breakdown data suggest that streamer propagation velocity increases with higher values of dV/dt. For example, the estimated propagation velocity for pinplane geometry with a 1 s rise-time is 10-12 km/s. At 100 ns rise-time for the same electrode geometry, the average propagation velocity exceeds 40 km/s. The results are compared with data previously generated in parallel liquid-solid gaps, and it is concluded that the time to breakdown is longer, and that higher applied fields are required to initiate breakdown, in open oil gaps compared to the case when a solid spacer is present. The results presented are intended to provide reference data for designers of oil-immersed, high-voltage systems such as power transformers and pulsed-power supplies.Index Terms -Breakdown voltage, dielectric breakdown, dielectric liquids, oil insulation, power transformers, pulsed power supplies.

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Section: Introductionmentioning

confidence: 99%

Breakdown of mineral oil: Effect of electrode geometry and rate of voltage rise

Wilson

Timoshkin

Given

et al. 2012

IEEE Trans. Dielect. Electr. Insul.

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“…Improvement of the operating characteristics of PCS's is another area of interest for the pulsed power community. Gasfilled plasma switches with higher breakdown voltage, lower standard deviation in the self-breakdown voltage, and lower jitter are in high demand for different practical pulsed power applications, [9][10][11][12], [21]. For example, papers [13 -15] report on the development and study of a PCS that was triggered by plasma ejected into the gas gap from the triggering electrode.…”

Section: Introductionmentioning

confidence: 99%

Breakdown Characteristics of Plasma Closing Switch Filled With Air, N₂, CO₂, and Ar/O₂

Yao

Timoshkin

MacGregor

et al. 2018

IEEE Trans. Plasma Sci.

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One of the critical components of high energy density pulsed power systems used to generate short high-voltage and high-power impulses is gas-filled plasma closing switch. In recent years significant research efforts have been aimed at finding environmentally friendly gases which can be used in the plasma closing switches, and several gases including dry air, nitrogen, carbon dioxide, argon and their mixtures have been considered as potentially suitable working fluids in such switches. However, the lack of knowledge of the breakdown characteristics of complex switching topologies filled with these gases limits their practical applications. Therefore, further investigation of the breakdown performance of plasma closing switches is required, in order to establish their applicability for practical use in high voltage pulsed power systems. The present paper reports on the investigation of the breakdown characteristics of a triggered plasma closing switch topology with corona discharge electrodes. The self-breakdown voltage of the switch, variation in the self-breakdown voltage, time to breakdown, and jitter have been obtained for the switch filled with "Zero Grade" air, N2, CO2 and an Ar/O2 mixture up to a pressure of 10 bar (abs). It was shown that the switch can provide a stable breakdown performance with jitter as low as 1 ns.

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“…Indeed, in literature, multiple studies focusing on plasma interactions with non-polar liquids, e.g., transformer oils, mineral oils, hydrocarbon oils, liquefied gases, etc., can be found [307,308,309]. More specifically, electrical discharges in hydrocarbon oils have been widely investigated and electron impact ionization was proposed as the primary mechanism driving a plasma discharge for both negative and positive polarities [310,311,312]. Dumitrescu et al [312] reported direct ionization for negative pulses (a cathode initiated discharge) as main mechanism, while bubble related ionization was prevalent for anode initiated discharges.…”

Section: Applications Of Plasma-liquid Systemsmentioning

confidence: 99%

Applications of Plasma-Liquid Systems: A Review

et al. 2019

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Plasma-liquid systems have attracted increasing attention in recent years, owing to their high potential in material processing and nanoscience, environmental remediation, sterilization, biomedicine, and food applications. Due to the multidisciplinary character of this scientific field and due to its broad range of established and promising applications, an updated overview is required, addressing the various applications of plasma-liquid systems till now. In the present review, after a brief historical introduction on this important research field, the authors aimed to bring together a wide range of applications of plasma-liquid systems, including nanomaterial processing, water analytical chemistry, water purification, plasma sterilization, plasma medicine, food preservation and agricultural processing, power transformers for high voltage switching, and polymer solution treatment. Although the general understanding of plasma-liquid interactions and their applications has grown significantly in recent decades, it is aimed here to give an updated overview on the possible applications of plasma-liquid systems. This review can be used as a guide for researchers from different fields to gain insight in the history and state-of-the-art of plasma-liquid interactions and to obtain an overview on the acquired knowledge in this field up to now.

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High voltage subnanosecond breakdown

Cited by 56 publications

References 6 publications

Breakdown of mineral oil: Effect of electrode geometry and rate of voltage rise

Breakdown of mineral oil: Effect of electrode geometry and rate of voltage rise

Breakdown Characteristics of Plasma Closing Switch Filled With Air, N₂, CO₂, and Ar/O₂

Applications of Plasma-Liquid Systems: A Review

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High voltage subnanosecond breakdown

Cited by 56 publications

References 6 publications

Breakdown of mineral oil: Effect of electrode geometry and rate of voltage rise

Breakdown of mineral oil: Effect of electrode geometry and rate of voltage rise

Breakdown Characteristics of Plasma Closing Switch Filled With Air, N2, CO2, and Ar/O2

Applications of Plasma-Liquid Systems: A Review

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Breakdown Characteristics of Plasma Closing Switch Filled With Air, N₂, CO₂, and Ar/O₂