Green Gas to Replace SF6 in Electrical Grids

Kieffel, Yannick; Irwin, T.; Ponchon, Philippe; Owens, John

doi:10.1109/mpe.2016.2542645

Cited by 289 publications

(210 citation statements)

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“…However, SF 6 was listed as one of the six major greenhouse gases with a GWP (Global Warming Potential) of 23,500 and an atmospheric lifetime of 3200 years in the 1972 Kyoto Protocol [2,3]. Although the atmospheric concentration of SF 6 is relatively low, contributing to 0.1% of the total anthropogenic radiative forcing, the concentration is growing continuously because of the compound's long lifetime of~3200 years [4,5]. Over the past five years, the content of SF 6 in the global atmosphere has increased by 20% [6].…”

Section: Introductionmentioning

confidence: 99%

“…A total of 80% of the SF 6 is used in high voltage circuit breakers and other high-pressure gas insulation equipment [1]. However, SF 6 was listed as one of the six major greenhouse gases with a GWP (Global Warming Potential) of 23,500 and an atmospheric lifetime of 3200 years in the 1972 Kyoto Protocol [2,3]. Although the atmospheric concentration of SF 6 is relatively low, contributing to 0.1% of the total anthropogenic radiative forcing, the concentration is growing continuously because of the compound's long lifetime of~3200 years [4,5].…”

Section: Introductionmentioning

confidence: 99%

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The Influence of O2 on Decomposition Characteristics of c-C4F8/N2 Environmental Friendly Insulating Gas

et al. 2018

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The c-C 4 F 8 gas is considered to have great potential as a gaseous medium for gas-insulated equipment, due to its good insulation properties and its relatively low greenhouse gas potential (GWP) relative to SF 6 . However, the decomposition is an important indicator of its use in equipment. In this paper, the decomposition characteristics of c-C 4 F 8 and the influence by oxygen have been explored through experiments and theoretical calculations. Firstly, the breakdown test of mixed gas was carried out and the precipitated elements of the electrodes and breakdown products of gas mixture were analyzed by X-ray photoelectron spectroscopy (XPS) and gas chromatography mass spectrometry (GC-MS). At the same time, the differences in decomposition products have also been studied when a small amount of O 2 was present. The path and mechanism of c-C 4 F 8 decomposition is then discussed, based on density functional theory (DFT). The results show that the black powdery substance descends on the electrode surface after the breakdown of the mixture of c-C 4

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Influence of O2 on Decomposition Characteristics of c-C4F8/N2 Environmental Friendly Insulating Gas

et al. 2018

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“…8 In the 145kV GIS electrical performance test, it is shown that the addition of C 6 F 12 O to the air can achieve the same dielectric strength as SF 6 . 9 The molecular formula of this substance is shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Partial discharge characteristics of C6F12O/CO2 mixed gas at power frequency AC voltage

Zhang

Wang

Rao³

et al. 2019

AIP Advances

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The greenhouse effect of SF6 has made its application in various types of gas-insulated equipment increasingly restricted. C6F12O combines the advantages of insulation strength, safety and environmental friendliness and is considered to have potential for use in medium and low voltage equipment when mixed with buffer gas. In this paper, an experimental study on the partial discharge characteristics of C6F12O/CO2 mixed gas was carried out. The partial discharge initial voltage and the partial discharge extinction voltage of the mixed gas under the power frequency voltage are measured, and compared with the breakdown voltage. It was found that the partial discharge initiation voltage and the extinction voltage of the mixed gas gradually increased with the mixing ratio, and the influence of the gas pressure on the high mixing ratio was large. Compared with pure CO2, the difference between the partial discharge starting voltage and the breakdown voltage of the mixed gas is large. The research in this paper can provide guidance for the operation and maintenance of C6F12O mixed gas in the application of medium and low voltage equipment.

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“…More importantly, SF6 has been included in the gas list by the Kyoto Protocol (1997), whose emissions should be limited [12]. Hence, it is crucial to develop alternatives to SF 6 in electrical equipment [13,14].…”

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.

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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

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Green Gas to Replace SF6 in Electrical Grids

Cited by 289 publications

References 0 publications

The Influence of O2 on Decomposition Characteristics of c-C4F8/N2 Environmental Friendly Insulating Gas

The Influence of O2 on Decomposition Characteristics of c-C4F8/N2 Environmental Friendly Insulating Gas

Partial discharge characteristics of C6F12O/CO2 mixed gas at power frequency AC voltage

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

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Green Gas to Replace SF6 in Electrical Grids

Cited by 289 publications

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The Influence of O2 on Decomposition Characteristics of c-C4F8/N2 Environmental Friendly Insulating Gas

The Influence of O2 on Decomposition Characteristics of c-C4F8/N2 Environmental Friendly Insulating Gas

Partial discharge characteristics of C6F12O/CO2 mixed gas at power frequency AC voltage

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

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