Cavity initiation through an evaporating mechanism for the pulse breakdown in liquids

V. Atrazhev, V. Vorobev, I. Timoshkin, S.J. MacGregor, M.J. Given

Research output: Contribution to conferencePaper

Abstract

This paper presents an analytical model which describes the dielectric strength of insulating liquids stressed with the impulse electric fields. The Joule heating by the space charge saturated current may cause over-heating of pure liquids or may result in generation of nucleation centers associated with impurities in the case of practical liquids. Evaporation of the liquid from these impurities has been analysed in the paper and formation criterion for percolation chains of gas bubbles in impure dielectric liquids has been established. Based on this percolation condition, the dielectric behavior of n-hexane has been studied. Breakdown volt-time characteristics of liquid n-hexane have been calculated for different temperatures, and its dielectric strength has been obtained as a function of externally applied pressure.

Conference

Conference17th IEEE International Pulsed Power Conference
CountryUnited States
CityWashington
Period28/06/092/07/09

Fingerprint

breakdown
cavities
liquids
pulses
impurities
Joule heating
impulses
space charge
bubbles
evaporation
nucleation
heating
electric fields
causes
gases
temperature

Keywords

  • analytical models
  • dielectric breakdown
  • dielectric liquids

Cite this

Atrazhev, V., Vorobev, V., Timoshkin, I., MacGregor, S. J., & Given, M. J. (2009). Cavity initiation through an evaporating mechanism for the pulse breakdown in liquids. 447. Paper presented at 17th IEEE International Pulsed Power Conference, Washington, United States. https://doi.org/10.1109/PPC.2009.5386266
Atrazhev, V. ; Vorobev, V. ; Timoshkin, I. ; MacGregor, S.J. ; Given, M.J. / Cavity initiation through an evaporating mechanism for the pulse breakdown in liquids. Paper presented at 17th IEEE International Pulsed Power Conference, Washington, United States.1 p.
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abstract = "This paper presents an analytical model which describes the dielectric strength of insulating liquids stressed with the impulse electric fields. The Joule heating by the space charge saturated current may cause over-heating of pure liquids or may result in generation of nucleation centers associated with impurities in the case of practical liquids. Evaporation of the liquid from these impurities has been analysed in the paper and formation criterion for percolation chains of gas bubbles in impure dielectric liquids has been established. Based on this percolation condition, the dielectric behavior of n-hexane has been studied. Breakdown volt-time characteristics of liquid n-hexane have been calculated for different temperatures, and its dielectric strength has been obtained as a function of externally applied pressure.",
keywords = "analytical models, dielectric breakdown , dielectric liquids",
author = "V. Atrazhev and V. Vorobev and I. Timoshkin and S.J. MacGregor and M.J. Given",
year = "2009",
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note = "17th IEEE International Pulsed Power Conference ; Conference date: 28-06-2009 Through 02-07-2009",

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Atrazhev, V, Vorobev, V, Timoshkin, I, MacGregor, SJ & Given, MJ 2009, 'Cavity initiation through an evaporating mechanism for the pulse breakdown in liquids' Paper presented at 17th IEEE International Pulsed Power Conference, Washington, United States, 28/06/09 - 2/07/09, pp. 447. https://doi.org/10.1109/PPC.2009.5386266

Cavity initiation through an evaporating mechanism for the pulse breakdown in liquids. / Atrazhev, V.; Vorobev, V.; Timoshkin, I.; MacGregor, S.J.; Given, M.J.

2009. 447 Paper presented at 17th IEEE International Pulsed Power Conference, Washington, United States.

Research output: Contribution to conferencePaper

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T1 - Cavity initiation through an evaporating mechanism for the pulse breakdown in liquids

AU - Atrazhev, V.

AU - Vorobev, V.

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AU - MacGregor, S.J.

AU - Given, M.J.

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AB - This paper presents an analytical model which describes the dielectric strength of insulating liquids stressed with the impulse electric fields. The Joule heating by the space charge saturated current may cause over-heating of pure liquids or may result in generation of nucleation centers associated with impurities in the case of practical liquids. Evaporation of the liquid from these impurities has been analysed in the paper and formation criterion for percolation chains of gas bubbles in impure dielectric liquids has been established. Based on this percolation condition, the dielectric behavior of n-hexane has been studied. Breakdown volt-time characteristics of liquid n-hexane have been calculated for different temperatures, and its dielectric strength has been obtained as a function of externally applied pressure.

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KW - dielectric breakdown

KW - dielectric liquids

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Atrazhev V, Vorobev V, Timoshkin I, MacGregor SJ, Given MJ. Cavity initiation through an evaporating mechanism for the pulse breakdown in liquids. 2009. Paper presented at 17th IEEE International Pulsed Power Conference, Washington, United States. https://doi.org/10.1109/PPC.2009.5386266