gaz sf6 Decomposition Gas Sensor Based on GeP Monolayer: A First

SF 6 Decomposition Gas Sensor Based on GeP Monolayer: A First-Principle Study Abstract: In this paper, we adopted the first-principles calculations to investigate the sensing properties of the GeP monolayer to four SF 6 decomposition gas molecules (H 2 S, SO 2 , SO 2 F 2 and SOF 2 ).Get price

High sensitivity gas sensor to detect gaz sf6 decomposition

Oct 01, 2020 · In this letter, we explore the interactions between monolayer SbP and SF 6 decompositions: H 2 S, SO 2, SO 2 F 2, SOF 2 and HF based on density functional theory (DFT) calculation. The calculated results demonstrate that monolayer SbP can be a potential replacement for SO 2 sensor with high sensitivity to detect SF 6 decompositions. 2.Get price

Ni-CNT Chemical Sensor for Sulfr hexafluoride Decomposition Components

Oct 16, 2018 · Sulfr hexafluoridedecomposition components detection is a key technology to evaluate and diagnose the insulation status of sf6 gas-insulated equipment online, especially when insulation defects-induced discharge occurs in equipment.Get price

Development of sf6 gas decomposition gas sensor - ScienceDirect

Jun 02, 2003 · Gas sensors for detecting SF 6 decomposition products have been pursued as low-cost instrumentation for detecting and locating faults in gas-insulated switchgear (GIS). We have developed an amperometric solid-state ionic sensor using fluorine ion-conductive solid electrolyte.Get price

The insulating gas Decomposition Mechanism: Background and Significance

Jan 24, 2017 · However, the decomposition components of SF 6 under PD mainly contain SOF 4, CF 4, SO 2 F 2, SOF 2, H 2 S, SO 2, and HF.Get price

(PDF) sf 6 Decomposition Gas Sensor Based on GeP Monolayer: A

Therefore, GeP monolayer is a potential candidate for highly sensitive and selective tunable Sulfr hexafluoride decomposition gas sensor for on-line diagnostics of power equipment. Discover the worldresearch...Get price

A highly sensitive and selective SnS2 monolayer sensor in

Mar 01, 2021 · However, partial discharge happens in gas-insulated equipment as time goes, resulting in the decomposition of SF 6 (products: SO 2 F 2, H 2 S, SO 2, HF, etc.),. The decomposed gas products accelerate partial discharge and sharply reduce the insulation strength of electrical equipment, leading to insulation fault,.Get price

(PDF) The Sulfr hexafluoride Decomposition Mechanism: Background and

The result shows that: insulating gas begins to decompose obviously at 300°C and the main decomposition components contain CO2, SO2F2, SOF2, SOF4, SO2 and H2S; the improvement of fault temperature willGet price

Synthesis, Characterization and Enhanced Sensing Properties

Planar-type chemical gas sensors were fabricated and their gas sensing performances toward the sf6 gasdecomposition byproducts SO2, SO2F2, and SOF2were systemically investigated.Get price

Byproducts of Sulfur Hexafluoride (insulating gas) Use in the Electric

F 10 (SF 5) c Disulfur decafluoride 5714-22-7 0.025 SO 2 F 2 Sulfuryl fluoride 2699-79-8 0.006 SO 2 Sulfur dioxide 7446-09-5 0.002 Table a dapted fro m Dervo s and Va ssiliou (200 0). a Note that these concentrations represent t he measured concentration for the experimental conditions st udied. TheGet price

Adsorption of gaz sf6 decomposition gases (H2S, SO2, SOF2 and

The insulation defects of GIS apparatus will cause partial discharge and result in the decomposition of SF 6 gas. The by-products of SF 6 decomposition include SO 2, SO 2 F 2, SOF 2, H 2 S, SOF 4, CO 2 and HF, which not only weaken its insulation, but also corrode GIS apparatus and reduce service life,,.Get price

Highly sensitive photoacoustic multicomponent gas sensor for

hexafluoride (gaz sf6) decomposition detection was developed by the use of two near-infrared (NIR) diode lasers and an ultraviolet (UV) solid-state laser.Get price

Ppb-level photoacoustic sensor system for saturation-free CO

Mar 01, 2019 · A photoacoustic sensor system for the ppb-level CO detection of sulphur hexafluoride (SF 6) decomposition was developed by use of a 10 W fiber-amplified near-infrared (NIR) diode laser. A photoacoustic detection module with symmetrical construction was designed to allow a high power laser beam and a large gas flow.Get price

Mechanism and Application of Carbon Nanotube Sensors in Sulfr hexafluoride

Zhang et al. [ 49] studied the gas sensitive response of Pd-SWCNT sensors to five kinds of SF 6 decomposition gases (SO 2 F 2, SOF 2, SO 2, H 2 S, and CF 4) through density functional theory and found that once exposed to adsorbed gases, the conductivity of nanotube would increase in the following order: SO 2  SOF 2  H 2 S, decrease when adsorbed by SO 2 F 2, and retain invariant in terms of CF 4.Get price

sf 6 Gas Detection For HV GIS Switchgear - Crowcon F-Gas Detector

Sep 30, 2020 · The Crowcon F-gas detector for sulphur hexafluoride (sf 6) is ideal for GIS switchgear applications and is part of the Crowcon fixed gas detector range. Crowcon F-gas provides a lower total cost of ownership by providing fast, stable and dependable Sulfr hexafluoride gas detection performance with infrared technology. Crowcon F-Gas Sulfr hexafluoride Gas DetectorGet price

(PDF) Synthesis, Characterization and Enhanced Sensing

Synthesis, Characterization and Enhanced Sensing Properties of a NiO/ZnO p–n Junctions Sensor for the gaz sf6 Decomposition Byproducts SO2, SO2F2, and SOF2 April 2017 Sensors 17(4):913Get price

CA2504092A1 - Method and device for the detection of sf6

This invention is in the field of gas detection for sulphur hexafluoride (sf6 gas) gas decomposition products, particularly for the detection of thionyl fluoride (SOF2) and sulphur dioxide (SO2). The...Get price

High Sensitivity Gas Sensor to Detect sf6 gas Decomposition

To propose a novel type of sensing material applied in the field of sulfur hexafluoride (Sulfr hexafluoride) insulated gas, we investigated the adsorption performance of Sulfr hexafluoride decomposed species (H2S, SO2, andGet price

Multicomponent Sulfr hexafluoride decomposition product sensing with a gas

Mar 01, 2021 · In the field of SF 6 decomposition gas detection, a small-volume sensor has the potential to be embedded into equipment for online monitoring, which can greatly improve production efficiency. It is...Get price

(PDF) TiO2 Nanotube Array Sensor for Detecting the insulating gas

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 directionalGet price

Comparative Study of Materials to Sulfr hexafluoride Decomposition

Feb 07, 2017 · To detect, evaluate, and diagnose the insulation status of SF 6 gas insulated equipment using the characteristics of SF 6 decomposition, a series of characteristic SF 6 decomposition components, SOF 2, SO 2 F 2, SO 2, H 2 S, CF 4, HF, and SF 6, are detected by gas sensors, including metal functionalized single wall carbon nanotubes (SWCNTs) [ 1 – 6 ], TiO 2 nanotubes [ 7 – 9 ], and graphene gas sensors [ 10, 11 ], as shown in Table 1.Get price

Decomposition of Sulfr hexafluoride in an RF Plasma Environment

Sulfur hexafluoride (SF 6)-contained gas is a common pollut-ant emitted during the etching process used in the semicon-ductor industry. This study demonstrated the application of radio-frequency (RF) plasma in the decomposition of SF 6. The decomposition fraction of SF 6 [η insulating gas, (C in –C out)/C in × 100%]Get price

A Pt-Doped TiO2 Nanotube Arrays Sensor for Detecting sf6 gas

The use of a Pt-doped TiO2nanotube arrays sensor for detecting sulfur hexafluoride (insulating gas) 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 gaz sf6is evaluated.Get price

Application of Flower-Like ZnO Nanorods Gas Sensor Detecting

AbstractIntroductionExperimentalResults and DiscussionConclusionsGas insulated switchgear (GIS) is an important electric power equipment in a substation, and its running state has a significant relationship with stability, security, and reliability of the whole electric power system. Detecting and analyzing the decomposition byproducts of sulfur hexafluoride gas (insulating gas) is an effective method for GIS state assessment and fault diagnosis. This paper proposes a novel gas sensor based on flower-like ZnO nanorods to detect typical gaz sf6 decompositions. Flower-like ZnO nanoparticles were synthesized via a simple hydrothermal method and characterized by X-ray powder diffraction and field-emission scanning electron microscopy, respectively. The gas sensor was fabricated with a planar-type structure and applied to detect sf 6 decomposition products. It shows excellent sensing properties to SO2, SOF2, and SO2F2 with rapid response and recovery time and long-term stability and repeatability. Moreover, the sensor shows a remarkable discrimination among SO2, SOF2...Get price

Frontiers | Electrospun ZnO–SnO2 Composite Nanofibers and

Hydrogen sulfide (H2S) is an important decomposition component of sulfur hexafluoride (Sulfr hexafluoride), which has been extensively used in gas-insulated switchgear (GIS) power equipments for insulating and arc-quenching medium. In this work, H2S gas sensor based on electrospun ZnO-SnO2 composite nanofibers was fabricated.Get price

TiO2 nanotube array sensor for detecting the sf 6

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 growth of highly ordered TiO(2) nanotube arrays. The sensor response of 10-50 ppm SO(2) gas is tested, and the sensitive response mechanism is discussed.Get price

CN102445433A - sf 6 decomposition gas infrared spectrum multi

The invention discloses an Sulfr hexafluoride decomposition gas infrared spectrum multi-component detection method and a device. According to the method, a chopped wave modulation wheel and a spectroscopical filtration wheel in a traditional non-dispersion infrared spectrum technology are combined into a whole, a modulation filtration wheel is utilized to realize simultaneous measurement of multi-componentGet price

The Adsorption and Sensing Performances of Ir-modified MoS2

response of the Ir-modified MoS2 nanomaterial-based sensor to the target gases was reasonably predicted. These results indicated that the Ir-modified MoS2-based gas sensor is a promising alternative for detecting the decomposition components of insulating gas. 2. Computational Detail In this work, the DMol3 package based on the DFT method was used toGet price

A Pt-doped TiO2 nanotube arrays sensor for detecting sf 6

The use of a Pt-doped TiO2 nanotube arrays sensor for detecting sulfur hexafluoride (insulating gas) 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 gaz sf6 is evaluated.Get price