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

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

doi:10.1109/PPC.2009.5386266

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

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

Electronic And Electrical Engineering

Research output: Contribution to conference › Paper

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.

Original language	English
Pages	447
Number of pages	1
DOIs	https://doi.org/10.1109/PPC.2009.5386266
Publication status	Published - Jun 2009
Event	17th IEEE International Pulsed Power Conference - Washington, United States Duration: 28 Jun 2009 → 2 Jul 2009

Conference

Conference	17th IEEE International Pulsed Power Conference
Country/Territory	United States
City	Washington
Period	28/06/09 → 2/07/09

Keywords

analytical models
dielectric breakdown
dielectric liquids

Access to Document

10.1109/PPC.2009.5386266

Pre-breakdown physical processes in the dielectric liquids and water stressed with fast high-field electrical impulses
Timoshkin, I. (Principal Investigator)
1/10/09 → 31/10/09
Project: Internally funded project
Study of formation and development of pre-breakdown gas cavities in liquid under pulse electrical field conditions
Timoshkin, I. (Principal Investigator), MacGregor, S. (Principal Investigator), Given, M. (Principal Investigator), Atrazhev, V. (Principal Investigator) & Vorob'ev, V. S. (Principal Investigator)
1/09/07 → 1/12/09
Project: Research

Cite this

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title = "Cavity initiation through an evaporating mechanism for the pulse breakdown in liquids",

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",

month = jun,

doi = "10.1109/PPC.2009.5386266",

language = "English",

pages = "447",

note = "17th IEEE International Pulsed Power Conference ; Conference date: 28-06-2009 Through 02-07-2009",

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

AU - Atrazhev, V.

AU - Vorobev, V.

AU - Timoshkin, I.

AU - MacGregor, S.J.

AU - Given, M.J.

PY - 2009/6

Y1 - 2009/6

N2 - 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.

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.

KW - analytical models

KW - dielectric breakdown

KW - dielectric liquids

U2 - 10.1109/PPC.2009.5386266

DO - 10.1109/PPC.2009.5386266

M3 - Paper

SP - 447

T2 - 17th IEEE International Pulsed Power Conference

Y2 - 28 June 2009 through 2 July 2009

ER -

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

Abstract

Conference

Keywords

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Projects

Pre-breakdown physical processes in the dielectric liquids and water stressed with fast high-field electrical impulses

Study of formation and development of pre-breakdown gas cavities in liquid under pulse electrical field conditions

Cite this