Potential of CF3I gas mixture as an insulation medium in gas-insulated equipment

Lujia Chen; Phillip Widger; Muhammad Saufi Kamarudin; Huw Griffiths; Abderrahmane Haddad

doi:10.1109/CEIDP.2015.7352013

Potential of CF3I gas mixture as an insulation medium in gas-insulated equipment

Lujia Chen, Phillip Widger, Muhammad Saufi Kamarudin, Huw Griffiths, Abderrahmane Haddad

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

SF6 is a widely used gas medium in gas-insulated equipment. Due to the high global warming potential and long atmospheric lifetime of SF6, there has been research into a new environmentally friendly replacement gas. This paper describes the research carried out at Cardiff University on CF3I gas and its mixture as a substitute insulation medium for SF6 in gas-insulated lines (GIL). A reduced-scale coaxial test system having the electric field properties of a full-scale 400 kV GIL system was fabricated. The design of the reduced-scale coaxial test system was simulated to ensure that the highest electric field would be along the center of the conductor. The coaxial prototype was then tested under a standard lightning impulse (1.2/50) in order to determine the 50% breakdown voltage for such a system when insulated with CF3I gas mixture. It was found that CF3I has the potential to replace SF6 as an insulation medium in GIL. A full-scale short length GIL demonstrator is being assembled in the laboratory to evaluate further the feasibility of using a CF3I gas mixture as an insulation medium.

Original language	English
Title of host publication	IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)
Place of Publication	Ann Arbor
Publisher	IEEE
Pages	868-871
Number of pages	4
DOIs	https://doi.org/10.1109/CEIDP.2015.7352013
Publication status	Published - 2015

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title = "Potential of CF3I gas mixture as an insulation medium in gas-insulated equipment",

abstract = "SF6 is a widely used gas medium in gas-insulated equipment. Due to the high global warming potential and long atmospheric lifetime of SF6, there has been research into a new environmentally friendly replacement gas. This paper describes the research carried out at Cardiff University on CF3I gas and its mixture as a substitute insulation medium for SF6 in gas-insulated lines (GIL). A reduced-scale coaxial test system having the electric field properties of a full-scale 400 kV GIL system was fabricated. The design of the reduced-scale coaxial test system was simulated to ensure that the highest electric field would be along the center of the conductor. The coaxial prototype was then tested under a standard lightning impulse (1.2/50) in order to determine the 50% breakdown voltage for such a system when insulated with CF3I gas mixture. It was found that CF3I has the potential to replace SF6 as an insulation medium in GIL. A full-scale short length GIL demonstrator is being assembled in the laboratory to evaluate further the feasibility of using a CF3I gas mixture as an insulation medium.",

author = "Lujia Chen and Phillip Widger and Kamarudin, {Muhammad Saufi} and Huw Griffiths and Abderrahmane Haddad",

year = "2015",

doi = "10.1109/CEIDP.2015.7352013",

language = "English",

pages = "868--871",

booktitle = "IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)",

publisher = "IEEE",

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T1 - Potential of CF3I gas mixture as an insulation medium in gas-insulated equipment

AU - Chen, Lujia

AU - Widger, Phillip

AU - Kamarudin, Muhammad Saufi

AU - Griffiths, Huw

AU - Haddad, Abderrahmane

PY - 2015

Y1 - 2015

N2 - SF6 is a widely used gas medium in gas-insulated equipment. Due to the high global warming potential and long atmospheric lifetime of SF6, there has been research into a new environmentally friendly replacement gas. This paper describes the research carried out at Cardiff University on CF3I gas and its mixture as a substitute insulation medium for SF6 in gas-insulated lines (GIL). A reduced-scale coaxial test system having the electric field properties of a full-scale 400 kV GIL system was fabricated. The design of the reduced-scale coaxial test system was simulated to ensure that the highest electric field would be along the center of the conductor. The coaxial prototype was then tested under a standard lightning impulse (1.2/50) in order to determine the 50% breakdown voltage for such a system when insulated with CF3I gas mixture. It was found that CF3I has the potential to replace SF6 as an insulation medium in GIL. A full-scale short length GIL demonstrator is being assembled in the laboratory to evaluate further the feasibility of using a CF3I gas mixture as an insulation medium.

AB - SF6 is a widely used gas medium in gas-insulated equipment. Due to the high global warming potential and long atmospheric lifetime of SF6, there has been research into a new environmentally friendly replacement gas. This paper describes the research carried out at Cardiff University on CF3I gas and its mixture as a substitute insulation medium for SF6 in gas-insulated lines (GIL). A reduced-scale coaxial test system having the electric field properties of a full-scale 400 kV GIL system was fabricated. The design of the reduced-scale coaxial test system was simulated to ensure that the highest electric field would be along the center of the conductor. The coaxial prototype was then tested under a standard lightning impulse (1.2/50) in order to determine the 50% breakdown voltage for such a system when insulated with CF3I gas mixture. It was found that CF3I has the potential to replace SF6 as an insulation medium in GIL. A full-scale short length GIL demonstrator is being assembled in the laboratory to evaluate further the feasibility of using a CF3I gas mixture as an insulation medium.

U2 - 10.1109/CEIDP.2015.7352013

DO - 10.1109/CEIDP.2015.7352013

M3 - Conference contribution

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BT - IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)

PB - IEEE

CY - Ann Arbor

ER -

Potential of CF3I gas mixture as an insulation medium in gas-insulated equipment

Abstract

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