Transformer Oil Dielectric Strength in the Contact Gap of the Explosive Arc-Extinguishing Device

I. O. Muravlev, Mikhail A. Surkov, Evgeniy V. Tarasov, Kh Tsoggerel, N. F. Uvarov

Research output: Contribution to journalArticle

Abstract

The article describes the experimental results on the breakdown of the high-speed flow of transformer oil. In real conditions, the flow moves in the contact gap of a high-voltage explosive switch with speeds from 67 to 152 m / s. The geometry of the contact gap is sharply inhomogeneous and forms turbulence in the flow zone. In the arc chute medium the air inclusions pass from the dissolved state to the gaseous and the emerging bubbles enter to the electric field. Breakdown occurs, mainly through gas inclusions. In the moment, the gradient of the breakdown voltage is reduced by 91.6% compared to the static state of the oil. The experiments were carried out on the model of a high-voltage explosive switch, connected to the power circuit of the surge generator. The probing of the gap was made by a standard pulse of 1.5 / 50 μs. As a result, the dependences of the gradient of the breakdown voltage on the flow rate of the transformer oil for the usual geometry of the high-voltage explosive switch contact system are constructed.

Original languageEnglish
Article number012018
JournalIOP Conference Series: Materials Science and Engineering
Volume189
Issue number1
DOIs
Publication statusPublished - 18 Apr 2017

Fingerprint

Insulating oil
Switches
Electric breakdown
Electric potential
Geometry
Contacts (fluid mechanics)
Oils
Turbulence
Gases
Electric fields
Flow rate
Networks (circuits)
Air
Experiments

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

Cite this

Transformer Oil Dielectric Strength in the Contact Gap of the Explosive Arc-Extinguishing Device. / Muravlev, I. O.; Surkov, Mikhail A.; Tarasov, Evgeniy V.; Tsoggerel, Kh; Uvarov, N. F.

In: IOP Conference Series: Materials Science and Engineering, Vol. 189, No. 1, 012018, 18.04.2017.

Research output: Contribution to journalArticle

@article{cf7acb68348d409bb7444b9b07a80e94,
title = "Transformer Oil Dielectric Strength in the Contact Gap of the Explosive Arc-Extinguishing Device",
abstract = "The article describes the experimental results on the breakdown of the high-speed flow of transformer oil. In real conditions, the flow moves in the contact gap of a high-voltage explosive switch with speeds from 67 to 152 m / s. The geometry of the contact gap is sharply inhomogeneous and forms turbulence in the flow zone. In the arc chute medium the air inclusions pass from the dissolved state to the gaseous and the emerging bubbles enter to the electric field. Breakdown occurs, mainly through gas inclusions. In the moment, the gradient of the breakdown voltage is reduced by 91.6{\%} compared to the static state of the oil. The experiments were carried out on the model of a high-voltage explosive switch, connected to the power circuit of the surge generator. The probing of the gap was made by a standard pulse of 1.5 / 50 μs. As a result, the dependences of the gradient of the breakdown voltage on the flow rate of the transformer oil for the usual geometry of the high-voltage explosive switch contact system are constructed.",
author = "Muravlev, {I. O.} and Surkov, {Mikhail A.} and Tarasov, {Evgeniy V.} and Kh Tsoggerel and Uvarov, {N. F.}",
year = "2017",
month = "4",
day = "18",
doi = "10.1088/1757-899X/189/1/012018",
language = "English",
volume = "189",
journal = "IOP Conference Series: Materials Science and Engineering",
issn = "1757-8981",
publisher = "IOP Publishing Ltd.",
number = "1",

}

TY - JOUR

T1 - Transformer Oil Dielectric Strength in the Contact Gap of the Explosive Arc-Extinguishing Device

AU - Muravlev, I. O.

AU - Surkov, Mikhail A.

AU - Tarasov, Evgeniy V.

AU - Tsoggerel, Kh

AU - Uvarov, N. F.

PY - 2017/4/18

Y1 - 2017/4/18

N2 - The article describes the experimental results on the breakdown of the high-speed flow of transformer oil. In real conditions, the flow moves in the contact gap of a high-voltage explosive switch with speeds from 67 to 152 m / s. The geometry of the contact gap is sharply inhomogeneous and forms turbulence in the flow zone. In the arc chute medium the air inclusions pass from the dissolved state to the gaseous and the emerging bubbles enter to the electric field. Breakdown occurs, mainly through gas inclusions. In the moment, the gradient of the breakdown voltage is reduced by 91.6% compared to the static state of the oil. The experiments were carried out on the model of a high-voltage explosive switch, connected to the power circuit of the surge generator. The probing of the gap was made by a standard pulse of 1.5 / 50 μs. As a result, the dependences of the gradient of the breakdown voltage on the flow rate of the transformer oil for the usual geometry of the high-voltage explosive switch contact system are constructed.

AB - The article describes the experimental results on the breakdown of the high-speed flow of transformer oil. In real conditions, the flow moves in the contact gap of a high-voltage explosive switch with speeds from 67 to 152 m / s. The geometry of the contact gap is sharply inhomogeneous and forms turbulence in the flow zone. In the arc chute medium the air inclusions pass from the dissolved state to the gaseous and the emerging bubbles enter to the electric field. Breakdown occurs, mainly through gas inclusions. In the moment, the gradient of the breakdown voltage is reduced by 91.6% compared to the static state of the oil. The experiments were carried out on the model of a high-voltage explosive switch, connected to the power circuit of the surge generator. The probing of the gap was made by a standard pulse of 1.5 / 50 μs. As a result, the dependences of the gradient of the breakdown voltage on the flow rate of the transformer oil for the usual geometry of the high-voltage explosive switch contact system are constructed.

UR - http://www.scopus.com/inward/record.url?scp=85018448778&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85018448778&partnerID=8YFLogxK

U2 - 10.1088/1757-899X/189/1/012018

DO - 10.1088/1757-899X/189/1/012018

M3 - Article

AN - SCOPUS:85018448778

VL - 189

JO - IOP Conference Series: Materials Science and Engineering

JF - IOP Conference Series: Materials Science and Engineering

SN - 1757-8981

IS - 1

M1 - 012018

ER -