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new SF6 decomposition Components Detection

new SF6 decomposition Components Detection

further research trend on CNTs in the detection of SF 6 decomposition components is also put forward. Keywords: CNTs, SF 6, Decomposition components, Gas response Introduction Sulfur hexafluoride (SF 6) gas is widely applied as electrical insulator as well as arc-quenching medium in gas-insulated switchgear (GIS) of power system due to its excellent chem-

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  • Ni-CNT Chemical Sensor for SF6 Decomposition Components

    Oct 16, 2018 · In order to detect the type and concentration of SF 6 decomposition components, a Ni-modified carbon nanotube (Ni-CNT) gas sensor has been prepared to analyze its gas sensitivity and selectivity to SF 6 decomposition components based on an experimental and density functional theory (DFT) theoretical study. Experimental results show that a Ni-CNT gas sensor presents an outstanding gas sensing property according to the significant change of conductivity during the gas molecule adsorption.

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  • Detection of SF6 Decomposition Components Under Partial

    Mar 01, 2016 · Abstract: Photoacoustic (PA) spectrum is a promising method in SF 6 decomposition product detection. To develop an on-line monitoring device, a gas detection system based on PA effect was introduced. Three kinds of gases, SO 2, CO 2, and CF 4, were chosen to test the device performance. Some experiments were conducted to get the relationship of

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  • The SF6 Decomposition Mechanism: Background and Significance

    Jan 24, 2017 · The detection methods of SF 6 decomposition components 3.1. Gas chromatography. The principle of gas chromatography is that the adsorption or dissolving capacity of the... 3.2. Photoacoustic spectroscopy. Photoacoustic spectroscopy is the measurement of the effect of absorbed electromagnetic... 3.3.

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  • Comparative Study of Materials to SF6 Decomposition Components

    In order to evaluate and diagnose the insulation status of SF 6 insulated equipment, gas sensor detection becomes an effective new method to realize the function by detecting the decomposition components of SF 6. Theoretical simulations are performed to understand the adsorption process of gas sensors and typical components of SF 6. And using carbon nanotubes (CNTs) based as novel kind of sensors show high sensitivity and quick responses to target gases.

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  • Optical technology for detecting the decomposition products

    The methods of SF6 SF 6 decomposition products detection can be divided into chemical and optical methods. Chemical detection employs adsorption, separation, and other methods and the various physical and chemical properties of different products to detect decomposition product concentrations.

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  • (PDF) The SF6 Decomposition Mechanism: Background and

    Nanomaterials Based Gas Sensors for SF6 Decomposition Components Detection 2 be detected to some extent by detecting PD or PO combined with pa ern recognition [12 ].

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  • Adsorption of SF6 decomposition components on Pt3-TiO2(1 0 1

    Nov 30, 2018 · SF 6 decomposition components detection plays an important role in diagnosing and evaluating the electric discharge faults in SF 6-insulated equipment. In this paper, Pt 3 -supported TiO 2 (1 0 1) was used to study the influence of the Pt clusters modification on the gas sensing property of TiO 2 (1 0 1) material to the characteristic decomposition components of SF 6 : H 2 S, SO 2 , SOF 2 and SO 2 F 2 .

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  • Byproducts of Sulfur Hexafluoride (SF6) Use in the Electric

    Detection Procedures and Guidelines SF 6 byproducts are difficult to detect chemically under normal working conditions. The presence of various SF 6 electrical discharge decomposition products and impurities (as well as the presence of SF 6 itself) makes measurement of the different byproducts problematic. A recent report in Transmission and

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  • (PDF) TiO2 Nanotube Array Sensor for Detecting the SF6

    The present study proposes the use of a TiO (2) nanotube array sensor for detecting the SF (6) decomposition product SO (2), and the application of the anodic oxidation method for the directional...

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  • Adsorption mechanism of SF6 decomposition components onto N

    Sep 01, 2018 · In this paper, we proposed the application of N and F co-doped TiO 2 nanotubes acting as gas sensors in the detection of SF 6 decomposition components based on density functional theory method. We first calculated the adsorption process of SF 6 characteristic components on N and F co-doped anatase TiO 2 (1 0 1) surface (NF-TiO 2 ).

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  • Mechanism and Application of Carbon Nanotube Sensors in SF6

    That is what we attempt to do in this work. This paper reviews the present state of the application of CNTs including single-walled carbon nanotubes and multi-walled carbon nanotubes in the detection of SF 6 decomposed components. This review is not to be comprehensive, since our point is on exploiting exceptional properties of CNTs toward the development of newfangled sensing materials in the field of electronic engineering.

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  • Mechanism and Application of Carbon Nanotube Sensors in SF6

    further research trend on CNTs in the detection of SF 6 decomposition components is also put forward. Keywords: CNTs, SF 6, Decomposition components, Gas response Introduction Sulfur hexafluoride (SF 6) gas is widely applied as electrical insulator as well as arc-quenching medium in gas-insulated switchgear (GIS) of power system due to its excellent chem-

    Get Price
  • Ultraviolet differential optical absorption spectrometry

    Along the light path at 600 mm, the average detection limit for CS 2 is 8.65 ppb based on three times the standard deviation of the system noises. The proposed device, which exhibits high sensitivity and effective cost, addresses the urgent demand for the monitoring and diagnosis of SF 6-insulated electrical equipment via online detection of trace CS 2.

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  • Nanomaterials Based Gas Sensors for SF6 Decomposition

    Diagnosing the insulation defect through analyzing the decomposed gases of SF6 by chemical gas sensors is the optimal method due to its advantages. Carbon nanotubes, TiO2 nanotubes and graphene are chosen as the gas-sensing materials to build specific gas sensors for detecting each kind of SF6 decomposed gases and then enhance the gas sensitivity and selectivity by material modification.

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  • Decomposition Characteristics of SF6 and Partial Discharge

    As a result, SF6decomposes differently under the four defects, and the decomposed components are quantitatively detected by the gas chromatography/mass spectrometry (GC/MS) detection method. The decomposition characteristics of SF6under four types of negative DC partial discharge (DC-PD) are obtained.

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  • Adsorption of SF6 decomposition components over Pd (1 1 1): A

    Jan 28, 2019 · This work studies the adsorption properties of Pd(1 1 1) surface to various SF 6 decomposition components (H 2 S, SO 2, SOF 2, and SO 2 F 2).Due to the affluent active d electronic of Pd transition metal, the density functional theory has been used to analyze the adsorption properties of Pd(1 1 1) surface to H 2 S, SO 2, SOF 2, and SO 2 F 2, including the adsorption structures, adsorption

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  • High sensitivity gas sensor to detect SF6 decomposition

    Oct 01, 2020 · We theoretically explored the possibility of monolayer antimonide phosphorus (SbP) detecting SF 6 decomposition components based on the first-principles calculations. The calculated results indicate that monolayer SbP exhibits more excellent gas sensing performance to SO 2 than to other gas molecules, with the adsorption energy of −0.541 eV and the charge transfer of −0.232 e.

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  • Adsorption of SF6 decomposition components on Pt3-TiO2(1 0 1

    SF 6 decomposition components detection plays an important role in diagnosing and evaluating the electric discharge faults in SF 6-insulated equipment.In this paper, Pt 3-supported TiO 2 (1 0 1) was used to study the influence of the Pt clusters modification on the gas sensing property of TiO 2 (1 0 1) material to the characteristic decomposition components of SF 6: H 2 S, SO 2, SOF 2 and SO 2

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  • Analysis of the Sensitivity of K-Type Molecular Sieve

    However, part of SF6 decomposes into different components under partial discharge (PD) conditions. Previous research has shown that the gas responses of intrinsic and 4 Å-type molecular sieve-deposited multi-wall carbon nanotubes (MWNTs) to SOF2 and SO2F2, two important decomposition components of SF6, are not obvious.

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  • Detection of partial discharge in SF6 gas using a carbon NTs

    Although photoacoustic spectrum method, gas chromatography, infrared absorption spectroscopy, and gas sensors have been used for detecting SF 6 decomposition components at present, there is still...

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  • A Pt-Doped TiO2 Nanotube Arrays Sensor for Detecting SF6

    The use of a Pt-doped TiO2nanotube arrays sensor for detecting sulfur hexafluoride (SF6) decomposition products is proposed in this paper. The electrochemical pulse deposition method is employed to prepare the sensor array. The sensorresponse to the main characteristic gaseous decomposition products of SF6is evaluated.

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  • Application of CNTs Gas Sensor in Online Monitoring of SF6

    Feb 07, 2017 · Considering the shortcomings of general detection methods, carbon nanotubes (CNTs) gas sensor was studied to detect the SF6 decomposition components because of its advantages in large surface activity and abundant pore structure, et al. The large surface area has a strong adsorption and desorption capacity.

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  • Application of Graphene Gas Sensors in Online Monitoring of

    Their corresponding gas sensors were both fabricated by the traditional drop coating method and then used as an adsorbent for the detection of H2S, SO2, SOF2 and SO2F2 at room temperature. Theoretical simulation was also investigated when the decomposed gaseous components of sulfur hexafluoride (SF6), namely, H2S, SO2, SOF2 and SO2F2, were adsorbed on pristine and Au‐embedded graphene based on DFT.

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  • Pt-doped TiO2-based Sensors for Detecting SF6 Decomposition

    The detection of SF6 decomposition gas can be used for on-line insulation detection of gas insulation equipment in electric power industry.

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  • A Pt-doped TiO2 nanotube arrays sensor for detecting SF6

    The detection of partial discharge and analysis of SF6 gas components in gas-insulated switchgear (GIS) is important for the diagnosis and operating state assessment of power equipment. The use of a Pt-doped TiO2 nanotube arrays sensor for detecting sulfur hexafluoride (SF6) decomposition products is proposed in this paper.

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  • sf 6 Leak Detection wika

    SF6 Gas Detection From SATIR - SATIR Europe (Ireland. SF6 Gas Detection From SATIR Find Your SF6 Leak Detection Solution from SATIR. Jan 25, 2018 The use of specialist thermal cameras in the OilGas Industry is becoming more and more cost effective and this is the same for detecting different gases in a wide variety of industries.

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  • Detection of Ozone and Nitric Oxide in Decomposition Products

    “The Quantitative Detection of SF 6 Characteristic Decomposition Component H 2 S Based on Cantilever Enhanced Photoacoustic Spectrometry”. Trans. Trans. China Electrotechnical Soc. 2016 . 15: 187 – 196 .

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  • TiO2 nanotube array sensor for detecting the SF6

    Author information: (1)State Key Laboratory of Power Transmission Equipment System Security and New Technology, Chongqing University, Chongqing 400044, China. [email protected] The detection of partial discharge through analysis of SF(6) gas components in gas-insulated switchgear, is significant for the diagnosis and assessment of the operating

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