Imaging of negative polarity dc breakdown streamer expansion in transformer oil due to variations in background pressure

Michael D. Cevallos; Michael Butcher; James Dickens; Andreas Neuber; Hermann Krompholz

doi:10.1109/TPS.2005.845901

Imaging of negative polarity dc breakdown streamer expansion in transformer oil due to variations in background pressure

Michael D. Cevallos, Michael Butcher, James Dickens, Andreas Neuber, Hermann Krompholz

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

The breakdown physics of transformer oil is investigated using high speed electrical and optical diagnostics. Experiments are done in self-breakdown mode utilizing a needle/plane geometry. Shadowgraphy combined with high-speed electrical diagnostics are aimed at measuring streamer expansion as a function of external pressure. Assuming a breakdown mechanism for negative needle based on bubble formation with subsequent carrier amplification in the gas phase implies a pressure dependence, which is observed in the experiments, i.e. the expansion velocity decreases with increasing pressure.

Original language	English
Pages (from-to)	494-495
Number of pages	2
Journal	IEEE Transactions on Plasma Science
Volume	33
Issue number	2 I
DOIs	https://doi.org/10.1109/TPS.2005.845901
State	Published - Apr 2005

Keywords

Breakdown
Liquid dielectrics
Plasma
Streamers

Access to Document

10.1109/TPS.2005.845901

Cite this

@article{bd837c8a02df4a589e99174ca71c99a3,

title = "Imaging of negative polarity dc breakdown streamer expansion in transformer oil due to variations in background pressure",

abstract = "The breakdown physics of transformer oil is investigated using high speed electrical and optical diagnostics. Experiments are done in self-breakdown mode utilizing a needle/plane geometry. Shadowgraphy combined with high-speed electrical diagnostics are aimed at measuring streamer expansion as a function of external pressure. Assuming a breakdown mechanism for negative needle based on bubble formation with subsequent carrier amplification in the gas phase implies a pressure dependence, which is observed in the experiments, i.e. the expansion velocity decreases with increasing pressure.",

keywords = "Breakdown, Liquid dielectrics, Plasma, Streamers",

author = "Cevallos, {Michael D.} and Michael Butcher and James Dickens and Andreas Neuber and Hermann Krompholz",

note = "Funding Information: Manuscript received July 30, 2004; revised January 17, 2005. This work was supported by the Compact-Pulsed Power MURI Program funded by the Director of Defense Research and Engineering (DDR&E) and managed by the Air Force Office of Scientific Research (AFOSR).",

year = "2005",

month = apr,

doi = "10.1109/TPS.2005.845901",

language = "English",

volume = "33",

pages = "494--495",

journal = "IEEE Transactions on Plasma Science",

issn = "0093-3813",

number = "2 I",

}

TY - JOUR

T1 - Imaging of negative polarity dc breakdown streamer expansion in transformer oil due to variations in background pressure

AU - Cevallos, Michael D.

AU - Butcher, Michael

AU - Dickens, James

AU - Neuber, Andreas

AU - Krompholz, Hermann

N1 - Funding Information: Manuscript received July 30, 2004; revised January 17, 2005. This work was supported by the Compact-Pulsed Power MURI Program funded by the Director of Defense Research and Engineering (DDR&E) and managed by the Air Force Office of Scientific Research (AFOSR).

PY - 2005/4

Y1 - 2005/4

N2 - The breakdown physics of transformer oil is investigated using high speed electrical and optical diagnostics. Experiments are done in self-breakdown mode utilizing a needle/plane geometry. Shadowgraphy combined with high-speed electrical diagnostics are aimed at measuring streamer expansion as a function of external pressure. Assuming a breakdown mechanism for negative needle based on bubble formation with subsequent carrier amplification in the gas phase implies a pressure dependence, which is observed in the experiments, i.e. the expansion velocity decreases with increasing pressure.

AB - The breakdown physics of transformer oil is investigated using high speed electrical and optical diagnostics. Experiments are done in self-breakdown mode utilizing a needle/plane geometry. Shadowgraphy combined with high-speed electrical diagnostics are aimed at measuring streamer expansion as a function of external pressure. Assuming a breakdown mechanism for negative needle based on bubble formation with subsequent carrier amplification in the gas phase implies a pressure dependence, which is observed in the experiments, i.e. the expansion velocity decreases with increasing pressure.

KW - Breakdown

KW - Liquid dielectrics

KW - Plasma

KW - Streamers

UR - http://www.scopus.com/inward/record.url?scp=18844459122&partnerID=8YFLogxK

U2 - 10.1109/TPS.2005.845901

DO - 10.1109/TPS.2005.845901

M3 - Article

AN - SCOPUS:18844459122

SN - 0093-3813

VL - 33

SP - 494

EP - 495

JO - IEEE Transactions on Plasma Science

JF - IEEE Transactions on Plasma Science

IS - 2 I

ER -

Imaging of negative polarity dc breakdown streamer expansion in transformer oil due to variations in background pressure

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this