Infrared Spectrum Analysis and Quantitative Detection of SF6 Characteristic Decomposition Components SO2F2 and SOF2

Zhang, Xiaoxing; Yan, Jin; Yin, Zhang; Cheng, Lin; Bian, Chao; Chen, Xuan

doi:10.1109/tdei.2022.3183654

Cited by 9 publications

(4 citation statements)

References 10 publications

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“…The detection accuracy of HF is 3 ppmv. To obtain the spectral information in the SO 2 F 2 and SOF 2 detection bands, Zhang et al [47] established an experimental platform for TDLAS based on mid-infrared spectroscopy. The cross-interference analysis of SF 6 characteristic components such as H 2 S, SO 2 , CO, and SF 6 background gases shows that SO 2 F 2 can be detected when the output wavenumber is 1506.4 cm −1 .…”

Section: Tunable Semiconductor Laser Absorption Spectroscopy (Tdlas) ...mentioning

confidence: 99%

Monitoring and Leak Diagnostics of Sulfur Hexafluoride and Decomposition Gases from Power Equipment for the Reliability and Safety of Power Grid Operation

Yang,

Wang,

Chen

et al. 2024

Applied Sciences

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Sulfur hexafluoride (SF6) is a typical fluorine gas with excellent insulation and arc extinguishing properties that has been widely used in large-scale power equipment. The detection of SF6 gas in high-power electrical equipment is a necessary measure to ensure the reliability and safety of power grid operation. A failure of SF6 insulated electrical equipment, such as discharging or overheating conditions, can cause SF6 gas decomposition, resulting in various decomposition products. The decomposed gases inside the equipment decrease the insulating properties and are toxic. The leakage of SF6 can also decrease the insulating properties. Therefore, it is crucial to monitor the leakage of SF6 decomposed gases from electrical equipment. Quantitative testing of decomposition products allows us to assess the insulation state of the equipment, identify internal faults, and maintain the equipment. This review comprehensively introduces the decomposition formation mechanism of SF6 gas and the current detection technology of decomposition products from the aspects of principle and structure, materials, test effect, and practicability. Finally, the development trends of SF6 and decomposition gas detection technology for the reliability and safety of power grid operation are prospected.

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Section: Tunable Semiconductor Laser Absorption Spectroscopy (Tdlas) ...mentioning

confidence: 99%

Monitoring and Leak Diagnostics of Sulfur Hexafluoride and Decomposition Gases from Power Equipment for the Reliability and Safety of Power Grid Operation

Yang,

Wang,

Chen

et al. 2024

Applied Sciences

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“…X.X. Zhang et al [6] also did some research on this. They modified CNTs by two methods, mixed acid treatment and metal Ni doping, respectively, and prepared corresponding gas sensors.…”

Section: Introductionmentioning

confidence: 97%

Research on detection technology of sulfur hexafluoride decomposition products of GIL based on carbon nanotubes

Sun,

Bian,

Gan

et al. 2023

J. Phys.: Conf. Ser.

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Sulfur hexafluoride (SF6) gas is a stable gas that is widely used in gas insulated lines (GILs) in power systems. However, in GIL, SF6 gas is in the environment of high temperature, high pressure and high voltage for a long time, SF6 gas will decompose into toxic gas, damage electrical equipment, and pose a huge threat to human body and ecological environment. In addition, SF6 gas is a greenhouse gas that is strictly forbidden to leak. Once leaked, it will cause great harm to the environment. Therefore, it is necessary to recover and purify the SF6 gas in the power system GIL. In this paper, a molecular model of carbon nanotubes is constructed, and the density functional theory is used to analyze the changes of charge distribution, density of states and molecular orbitals after adsorption of SF6 decomposition products by carbon nanotubes, and determine the gas-sensing response of carbon nanotubes to gas molecules characteristic.

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“…However, GC has several drawbacks for time-resolved and on-site applications: it requires different chromatography columns for the separation of sulfides and carbides, is time-consuming, expensive, difficult to calibrate, and limited in miniaturisation. Infrared absorption spectroscopy [8,9], recommended by the Internal Electrotechnical Commission (IEC) (60,480) standard and photoacoustic [10][11][12][13][14]/photothermal spectroscopy [15,16] provide the superiority of high sensitivity with fast response, are free of sample pretreatment, non-consumption, label-free, and costeffective. Nevertheless, the absorption peaks of the decompositions may overlap with that of SF 6 in a highconcentration background, thus having a negative influence on the quantification.…”

Section: Introductionmentioning

confidence: 99%

Analysis of SF₆ decomposed products by fibre‐enhanced Raman spectroscopy for gas‐insulated switchgear diagnosis

Wang,

Chen,

Wang

et al. 2023

High Voltage

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Sulphur hexafluoride (SF6) decomposed products analysis is highly critical in the early‐stage fault diagnosis of gas‐insulated switchgear (GIS). Spectrum technology outperforms traditional methods on non‐invasiveness, no sample preparation, and no consumption. Here, the authors present an improved fibre‐enhanced Raman spectroscopy (FERS) as a comprehensive analytical tool to detect a suite of SF6 decomposed products (SO2F2, SOF2, SO2, H2S, CF4, OCS, CO2, and CO). The FERS approach is combined with two iris diaphragms for spatial filtering and a rear‐end reflector for additional Raman signal enhancement. Limits of detection down to 1×10−6–8 × 10−6 are achieved for different SF6 decompositions, and quantification of an undefined multigas, sampled from an 800 kV GIS in service, is realised utilising SF6 as the internal standard gas and with a maximum error of 5.5 %. The GIS is diagnosed according to the results and confirmed by an on‐site check. The authors foresee that this technique will provide a route for trace gas analysis in the power industry.

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Infrared Spectrum Analysis and Quantitative Detection of SF₆ Characteristic Decomposition Components SO₂F₂ and SOF₂

Cited by 9 publications

References 10 publications

Monitoring and Leak Diagnostics of Sulfur Hexafluoride and Decomposition Gases from Power Equipment for the Reliability and Safety of Power Grid Operation

Monitoring and Leak Diagnostics of Sulfur Hexafluoride and Decomposition Gases from Power Equipment for the Reliability and Safety of Power Grid Operation

Research on detection technology of sulfur hexafluoride decomposition products of GIL based on carbon nanotubes

Analysis of SF₆ decomposed products by fibre‐enhanced Raman spectroscopy for gas‐insulated switchgear diagnosis

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Infrared Spectrum Analysis and Quantitative Detection of SF6 Characteristic Decomposition Components SO2F2 and SOF2

Cited by 9 publications

References 10 publications

Monitoring and Leak Diagnostics of Sulfur Hexafluoride and Decomposition Gases from Power Equipment for the Reliability and Safety of Power Grid Operation

Monitoring and Leak Diagnostics of Sulfur Hexafluoride and Decomposition Gases from Power Equipment for the Reliability and Safety of Power Grid Operation

Research on detection technology of sulfur hexafluoride decomposition products of GIL based on carbon nanotubes

Analysis of SF6 decomposed products by fibre‐enhanced Raman spectroscopy for gas‐insulated switchgear diagnosis

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Product

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Infrared Spectrum Analysis and Quantitative Detection of SF₆ Characteristic Decomposition Components SO₂F₂ and SOF₂

Analysis of SF₆ decomposed products by fibre‐enhanced Raman spectroscopy for gas‐insulated switchgear diagnosis