SF<sub>6</sub> alternative development for high voltage switchgears

Kieffel, Yannick; Biquez, Francois

doi:10.1109/icacact.2014.7223577

Cited by 62 publications

(44 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Such mixtures represent an ideal compromise between the operating temperature, the global warming potential, and a dielectric strength that is comparable to that of SF 6 . The fluoronitrile/CO 2 mixture was presented for the first time at CIGRE 2014 by Alstom Grid (Villeurbanne, France), now GE Grid Solutions (Villeurbanne, France), and at CIRED 2015 as a candidate gas to replace SF 6 for HV switchgear insulation [55][56][57]. The fluoronitrile has a dielectric strength 2.7 times greater than that of SF 6 in uniform field [58] for both AC and DC voltages.…”

Section: Fluoronitriles and Fluoronitriles Mixturesmentioning

confidence: 99%

Recent Advances in the Quest for a New Insulation Gas with a Low Impact on the Environment to Replace Sulfur Hexafluoride (SF6) Gas in High-Voltage Power Network Applications

2017

View full text Add to dashboard Cite

Abstract:The growing environmental challenge of electrical energy systems has prompted a substantial increase in renewable energy generation. Such generation systems allow for significant reduction of CO 2 emissions compared with a traditional fossil fuel plant. Furthermore, several improvements in power systems network configuration and operation combined with new technologies have enabled reduction of losses and energy demand, thus contributing to reduction of CO 2 emissions. Another environmental threat identified in electrical networks is the leaking of insulating sulfur hexafluoride (SF 6 ) gas used in electrical gas insulated substations (GIS) and equipment. Because of its Global Warming Potential (GWP) of nearly 24,000 and its long life in the atmosphere (over 3000 years), SF 6 gas was recognized as a greenhouse gas at the 1997 COP3; since then its use and emissions in the atmosphere have been regulated by international treaties. It is expected that as soon as an alternative insulating gas is found, SF 6 use in high-voltage (HV) equipment will be banned. This paper presents an overview of the key research advances made in recent years in the quest to find eco-friendly gases to replace SF 6 . The review reports the main properties of candidate gases that are being investigated; in particular, natural gases (dry air, N 2 or CO 2 ) and polyfluorinated gases especially Trifluoroiodomethane (CF 3 I), Perfluorinated Ketones, Octafluorotetra-hydrofuran, Hydrofluoroolefin (HFOs), and Fluoronitriles are presented and their strengths and weaknesses are discussed with an emphasis on their dielectric properties (especially their dielectric strength), GWP, and boiling point with respect to the minimum operating temperature for HV power network applications.

show abstract

Section: Fluoronitriles and Fluoronitriles Mixturesmentioning

confidence: 99%

Recent Advances in the Quest for a New Insulation Gas with a Low Impact on the Environment to Replace Sulfur Hexafluoride (SF6) Gas in High-Voltage Power Network Applications

2017

View full text Add to dashboard Cite

show abstract

“…The hydrofluoroolefin HFO1234ze (trans-1,3,3,3-tetrafluoroprop-1-ene, chemical formula: C3H2F4) is a gas which was only recently tested and patented [12][13][14] for use in high voltage equipment. But no details are known about the electric properties.…”

Section: Introductionmentioning

confidence: 99%

High voltage insulation properties of HFO1234ze

Koch

Franck

2015

IEEE Trans. Dielect. Electr. Insul.

View full text Add to dashboard Cite

“…The mixture of SF 6 /N 2 is an promising alternative to SF6 and has shown good potentials for practical applications [19,20]. For example, when the content of SF 6 is 50% in the SF 6 /N 2 mixture in uniform electric field, the electric strength of the mixed gas is almost 85% of the strength of the pure SF 6 gas [17].…”

Section: Introductionmentioning

confidence: 99%

A New Concentration Detection System for SF₆/N₂ Mixture Gas in Extra/Ultra High Voltage Power Transmission Systems

Yang

et al. 2018

IEEE Sensors J.

View full text Add to dashboard Cite

Abstract-This paper develops a new detection system, for the first time, to detect the gas concentrations of the SF 6 /N 2 mixture in extra/ultra-high voltage power transmission systems. The concentrations of SF 6 and N 2 are calculated from the thermal conductivity function of the mixture gas. The main contribution of this work is that a specially-designed thermostatic chamber with adaptive temperature controller is developed to ensure constant pressure of the gas flowed through the thermal conductivity sensor. Another contribution is the combination of multiple sensors (e.g. humidity and electrochemical sensors), which enables the detector to address the penetration effects of H 2 O and O 2 in the SF 6 /N 2 mixture. Experimental evaluation results using the prototype demonstrated that satisfactory accuracy (±1% of the measurement error) has been achieved for the concentration detection of the SF 6 /N 2 mixture under variable operation conditions. Compared with existing detection techniques, the proposed detector not only can detect the SF 6 /N 2 concentration by taking the air infiltration effect into account, but also reduce the cost.Index Terms-SF 6 /N 2 , gas mixture, microfluidic thermal conductivity sensor, constant temperature control, trace O 2

show abstract

SF₆ alternative development for high voltage switchgears

Cited by 62 publications

References 1 publication

Recent Advances in the Quest for a New Insulation Gas with a Low Impact on the Environment to Replace Sulfur Hexafluoride (SF6) Gas in High-Voltage Power Network Applications

Recent Advances in the Quest for a New Insulation Gas with a Low Impact on the Environment to Replace Sulfur Hexafluoride (SF6) Gas in High-Voltage Power Network Applications

High voltage insulation properties of HFO1234ze

A New Concentration Detection System for SF₆/N₂ Mixture Gas in Extra/Ultra High Voltage Power Transmission Systems

Contact Info

Product

Resources

About

SF6 alternative development for high voltage switchgears

Cited by 62 publications

References 1 publication

Recent Advances in the Quest for a New Insulation Gas with a Low Impact on the Environment to Replace Sulfur Hexafluoride (SF6) Gas in High-Voltage Power Network Applications

Recent Advances in the Quest for a New Insulation Gas with a Low Impact on the Environment to Replace Sulfur Hexafluoride (SF6) Gas in High-Voltage Power Network Applications

High voltage insulation properties of HFO1234ze

A New Concentration Detection System for SF6/N2 Mixture Gas in Extra/Ultra High Voltage Power Transmission Systems

Contact Info

Product

Resources

About

SF₆ alternative development for high voltage switchgears

A New Concentration Detection System for SF₆/N₂ Mixture Gas in Extra/Ultra High Voltage Power Transmission Systems