Electrode erosion and lifetime performance of a triggered, corona-stabilized switch in SF6, at a repetition rate of 1kHz

John M. Koutsoubis, Katerina Thoma, Scott J. MacGregor

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

This paper describes the work undertaken to investigate the electrode erosion and lifetime performance of an electrically triggered, corona stabilized (TCS) switch. The switch, which had a rod-plane geometry, was filled with SF6 at a pressure of 0.8 bar (1.0bar = 100kPa) absolute and was operated at a pulse repetition frequency (PRF) of 1kHz. The erosion rates of anode and cathode electrode materials such as elkonite (a copper tungsten composite), brass, aluminum and two types of stainless steel was measured, and their surfaces were studied optically, photographed and chemically analyzed. The erosion rate of the anode (rod) electrode materials ranged from 21.39 x 10-6 cm3C-1 for elkonite to 60.4 x 10-6 cm3C-1 for brass, whilst a cathode (trigger disc) erosion rate as high as 51.23 x 10-6 cm3C-1 for aluminum was measured. The lifetime of the TCS switch was experimentally determined for each of the electrode material tested, and was found to be inversely proportional to the erosion rate of the rod electrode. The electrode surface morphology and the gas-electrode compound distribution have also been evaluated to address the erosion mechanism in effect. Additionally, the influence of rod electrode surface conditions and gas deterioration has been investigated in respect to the performance and operational behavior of the TCS switch.
LanguageEnglish
Pages1985-1995
Number of pages11
JournalIEEE Transactions on Dielectrics and Electrical Insulation
Volume23
Issue number4
DOIs
Publication statusPublished - 8 Sep 2016

Fingerprint

Erosion
Switches
Electrodes
Brass
Anodes
Cathodes
Aluminum
Gases
Surface morphology
Tungsten
Deterioration
Stainless steel
Copper
Geometry
Composite materials

Keywords

  • corona stabilization
  • high-pressure plasma closing switches
  • gas discharges
  • electrode erosion
  • electronegative gases

Cite this

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title = "Electrode erosion and lifetime performance of a triggered, corona-stabilized switch in SF6, at a repetition rate of 1kHz",
abstract = "This paper describes the work undertaken to investigate the electrode erosion and lifetime performance of an electrically triggered, corona stabilized (TCS) switch. The switch, which had a rod-plane geometry, was filled with SF6 at a pressure of 0.8 bar (1.0bar = 100kPa) absolute and was operated at a pulse repetition frequency (PRF) of 1kHz. The erosion rates of anode and cathode electrode materials such as elkonite (a copper tungsten composite), brass, aluminum and two types of stainless steel was measured, and their surfaces were studied optically, photographed and chemically analyzed. The erosion rate of the anode (rod) electrode materials ranged from 21.39 x 10-6 cm3C-1 for elkonite to 60.4 x 10-6 cm3C-1 for brass, whilst a cathode (trigger disc) erosion rate as high as 51.23 x 10-6 cm3C-1 for aluminum was measured. The lifetime of the TCS switch was experimentally determined for each of the electrode material tested, and was found to be inversely proportional to the erosion rate of the rod electrode. The electrode surface morphology and the gas-electrode compound distribution have also been evaluated to address the erosion mechanism in effect. Additionally, the influence of rod electrode surface conditions and gas deterioration has been investigated in respect to the performance and operational behavior of the TCS switch.",
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author = "Koutsoubis, {John M.} and Katerina Thoma and MacGregor, {Scott J.}",
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Electrode erosion and lifetime performance of a triggered, corona-stabilized switch in SF6, at a repetition rate of 1kHz. / Koutsoubis, John M.; Thoma, Katerina; MacGregor, Scott J.

In: IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 23, No. 4, 08.09.2016, p. 1985-1995.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Electrode erosion and lifetime performance of a triggered, corona-stabilized switch in SF6, at a repetition rate of 1kHz

AU - Koutsoubis, John M.

AU - Thoma, Katerina

AU - MacGregor, Scott J.

N1 - (c) 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.

PY - 2016/9/8

Y1 - 2016/9/8

N2 - This paper describes the work undertaken to investigate the electrode erosion and lifetime performance of an electrically triggered, corona stabilized (TCS) switch. The switch, which had a rod-plane geometry, was filled with SF6 at a pressure of 0.8 bar (1.0bar = 100kPa) absolute and was operated at a pulse repetition frequency (PRF) of 1kHz. The erosion rates of anode and cathode electrode materials such as elkonite (a copper tungsten composite), brass, aluminum and two types of stainless steel was measured, and their surfaces were studied optically, photographed and chemically analyzed. The erosion rate of the anode (rod) electrode materials ranged from 21.39 x 10-6 cm3C-1 for elkonite to 60.4 x 10-6 cm3C-1 for brass, whilst a cathode (trigger disc) erosion rate as high as 51.23 x 10-6 cm3C-1 for aluminum was measured. The lifetime of the TCS switch was experimentally determined for each of the electrode material tested, and was found to be inversely proportional to the erosion rate of the rod electrode. The electrode surface morphology and the gas-electrode compound distribution have also been evaluated to address the erosion mechanism in effect. Additionally, the influence of rod electrode surface conditions and gas deterioration has been investigated in respect to the performance and operational behavior of the TCS switch.

AB - This paper describes the work undertaken to investigate the electrode erosion and lifetime performance of an electrically triggered, corona stabilized (TCS) switch. The switch, which had a rod-plane geometry, was filled with SF6 at a pressure of 0.8 bar (1.0bar = 100kPa) absolute and was operated at a pulse repetition frequency (PRF) of 1kHz. The erosion rates of anode and cathode electrode materials such as elkonite (a copper tungsten composite), brass, aluminum and two types of stainless steel was measured, and their surfaces were studied optically, photographed and chemically analyzed. The erosion rate of the anode (rod) electrode materials ranged from 21.39 x 10-6 cm3C-1 for elkonite to 60.4 x 10-6 cm3C-1 for brass, whilst a cathode (trigger disc) erosion rate as high as 51.23 x 10-6 cm3C-1 for aluminum was measured. The lifetime of the TCS switch was experimentally determined for each of the electrode material tested, and was found to be inversely proportional to the erosion rate of the rod electrode. The electrode surface morphology and the gas-electrode compound distribution have also been evaluated to address the erosion mechanism in effect. Additionally, the influence of rod electrode surface conditions and gas deterioration has been investigated in respect to the performance and operational behavior of the TCS switch.

KW - corona stabilization

KW - high-pressure plasma closing switches

KW - gas discharges

KW - electrode erosion

KW - electronegative gases

U2 - 10.1109/TDEI.2016.7556470

DO - 10.1109/TDEI.2016.7556470

M3 - Article

VL - 23

SP - 1985

EP - 1995

JO - IEEE Transactions on Dielectrics and Electrical Insulation

T2 - IEEE Transactions on Dielectrics and Electrical Insulation

JF - IEEE Transactions on Dielectrics and Electrical Insulation

SN - 1070-9878

IS - 4

ER -