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SF6 decomposition evacuation Quantitative

SF6 decomposition evacuation Quantitative

Reactive Gases (SF6 Decomposition By-Products) Reactive gaseous SF6 decomposition products include various gaseous fluorides such as SF4 and WF6, oxifluorides like SOF2, SOF4, and SO2F2, the oxide SO2, and hydrogen fluoride HF. All of these gases could principally be detected using gas chromatography or infrared spectrometers.

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  • Quantitative analysis of decomposition products of sulfur

    Electrical utilities use sulfur hexafluoride (SF 6) as an electrical insulator in many components of their power systems.Under normal conditions SF 6 is stable, but in electrical discharges SF 6 decomposes into many byproducts. With an FT-IR spectrometer and a 20-m cell, we have examined the byproducts from various discharges and obtained quantitative analyses of components down to 1 ppm (partCited by: 3

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  • Quantitative infrared spectroscopic analysis of SF6

    May 30, 2001The quantitative analysis of the decomposition products of SF 6, obtained under various electrical stress conditions, was investigated using FT-IR spectroscopy and PLS-calibration. This technique provides the sensitivity necessary to determine reliable concentrations in the low ppm v and for some components even in the sub-ppm v range using aCited by: 21

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  • Quantitative infrared spectroscopic analysis of SF 6

    A high-performance sensor for detecting SF6 decomposition components (H2S and SOF2) was fabricated via hydrothermal method using Au nanoparticles/tin oxide/reduced graphene oxide

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  • Analysis of spark decomposition products of SF 6

    Journal of Molecular Structure 480–481 (1999) 211–217 Analysis of spark decomposition products of SF6 using multivariate mid-infrared spectrum evaluation R. Kurte, H.M. Heise*, D. Klockow Institut fu¨r Spektrochemie und Angewandte Spektroskopie, Bunsen-Kirchhoff-Str. 11, D-44139 Dortmund, Germany Received 25 August 1998; accepted 30 September 1998 Abstract Infrared spectroscopy is a

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  • SF6 Decomposition in Gas-Insulated Equipment - IEEE

    This paper reviews previous research in SF6 decomposition relating to the operation of gas-insulated switchgears, gas-insulated transmission lines, and electrostatic accelerators. Results on the qualitative and quantitative determination of the by-products and their formation ion rates in various modes of electrical discharges are summarized.

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  • CN103105441B - Qualitative and quantitative analysis

    The invention discloses a qualitative and quantitative analysis method for a sulfur hexafluoride (SF6) gas discharge decomposition product. The method comprises the following steps of: sampling; performing qualitative and quantitative analysis on a sample by a gas chromatograph-mass spectrograph, wherein a quadrupole rod quality detector is adopted, and a chromatographic column is a CP-Sil 5

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  • Quantitative Analysis for SF6 and its Compositions in GIS

    In this paper, a method for GIS equipment fault diagnosis by the analysis of volume fractions of the derivatives of SF6 gas inside GIS equipment is presented. For the method, based on the differential spectra method, a neural network model and the particle swarm optimization are used for training analysis of infrared spectra, to realize the quantitative analysis of specific derivatives.

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  • Fourier transform infrared spectroscopy quantitative

    Feb 05, 2015Quantitative research on SF 6 decomposition components was conducted in this study based on the FTIR method. The absorption coefficients of several types of SF 6 decomposition components were confirmed, and the quantitative relationships among gas production rate, PD time, and PD quantity were studied.

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  • SF6 By-products: Safety, Cleaning, and Disposal Concerns

    6 Decomposition and Contamination • Reactive decomposition byproducts form when SF 6 is exposed to: 1. spark discharges, 2. partial discharges, 3. switching arcs, and 4. failure arcing • Decomposition byproducts can take the form of gas or powders • Other types of contaminants can include moisture and air (from handling or leakage),

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  • Byproducts of Sulfur Hexafluoride (SF6) Use in the

    Sulfur hexafluoride (SF 6) is a relatively nontoxic gas used in a number of applications for its inert qualities. The dielectric and other physical and chemical properties related to its lack of reactivity have led to the extensive use of SF 6 as an insulating medium in switching equipment (e.g., circuit breakers) by electric utilities. While SF 6

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  • Research on Solid Products of SF6 Decomposition Under

    Recent investigations on sulfur hexafluoride decomposition have shown the need of a rapid and efficient method for the qualitative and quantitative analysis of the reaction products.

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  • SF6 Decomposition in Gas-Insulated Equipment

    The increasing application of SF6 as an insulating gas has led to many studies on SF6 decomposition in gas-insulated equipment. In the presence-of an electric arc, spark or corona, SF6 decomposes to a wide variety of chemically active products which possess completely different properties from SF6. The accumulation of these decomposition products in the equipment has caused concerns regarding

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  • Quantitative infrared spectroscopic analysis of SF6

    Quantitative infrared spectroscopic analysis of SF 6 decomposition products obtained by electrical partial discharges and sparks using PLS-calibrations Author

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  • SF6 Handling Procedures - P2 InfoHouse

    SF6 Safe Handling Procedures Section 2. Toxicity 2.1. Noncontaminated gas (unused).SF6 gas is odorless, tasteless, colorless, and non-toxic in its pure state. SF6 gas is approximately five times heavier than air and tends to collect in low places, in buildings or

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  • Fourier transform infrared spectroscopy quantitative

    Gas-insulated switchgear (GIS) internal SF 6 gas produces specific decomposition components under partial discharge (PD). By detecting these characteristic decomposition components, such information as the type and level of GIS internal insulation deterioration can be obtained effectively, and the status of GIS internal insulation can be evaluated.

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  • Fourier transform infrared spectroscopy quantitative

    Feb 05, 20151. Spectrochim Acta A Mol Biomol Spectrosc. 2015 Feb 5;136 Pt B:884-9. doi: 10.1016/j.saa.2014.09.109. Epub 2014 Oct 2. Fourier transform infrared spectroscopy quantitative analysis of SF6 partial discharge decomposition components.

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  • Quantitative infrared spectroscopic analysis of SF 6

    Infrared spectroscopy is a powerful tool for the analysis of gaseous by-products in sulfur hexafluoride gas used as an insulator in high-voltage equipment. Sparks and electrical partial discharges were generated between different point-plane configurations within a custom-made discharge chamber constructed from stainless steel and Teflon<SUP</SUP. Various electrode materials were used such

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  • Ultraviolet differential optical absorption spectrometry

    SO2F, SOF2, SO2F2 of SF6 decomposition in power equipment Yuwei Fu, Mingzhe Rong, Kang Yang et al.-Chemical kinetic modeling and byproducts in 50 Hz ac point-plane corona discharges Qingqing Gao, Chunping Niu, Xiaohua Wang et al.-Recent citations Ultraviolet Spectral Analysis and Quantitative Detection of Heptafluoroisobutyronitrile (C4F7N) in a

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  • Quantitative detection of trace H2S based on ultraviolet

    Li X 2016 The quantitative detection research of SF6 characteristic decomposition components SO2 and CS2 based on ultraviolet differential optical absorption spectrometry (Chongqing, China: Chongqing University) Google Scholar

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  • Cantilever enhanced photoacoustic spectrometry

    Sep 01, 20161. Introduction. Sulfur hexafluoride (SF 6) gas-insulated equipment are widely used in high voltage, super-high voltage and ultra-high voltage areas of power system and they are characterized by high reliability, small volume, flexible configuration, low maintenance costs, and others , , .Under ambient temperature and pressure, pure SF 6 is a kind of inert gas with stable chemical properties.

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  • Ultraviolet differential optical absorption spectrometry

    Oct 12, 2017The occurrence of partial discharge or partial overthermal fault in sulfur hexafluoride (SF 6)-insulated electrical equipment frequently causes SF 6 and solid insulation materials to decompose into various products. One of the most characteristic products of this process is carbon disulfide (CS 2).The internal fault type and severity of the fault in the insulation equipment can be detected

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  • Cantilever enhanced photoacoustic spectrometry

    The SF 6 decomposition and its reaction to form H 2 S were simulated.. Quantitative researches on H 2 S were carried out based on CEPAS detection platform.. Detection sensitivity to H 2 S of the detection platform were 0.84 μL/L and 1.75 μL/L.. The influence of temperature and pressure on the detection platform were analyzed.

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  • Cigre Sf6 234 - ID:5c5faff2391be - livrosdeamor.com.br

    Reactive Gases (SF6 Decomposition By-Products) Reactive gaseous SF6 decomposition products include various gaseous fluorides such as SF4 and WF6, oxifluorides like SOF2, SOF4, and SO2F2, the oxide SO2, and hydrogen fluoride HF. All of these gases could principally be detected using gas chromatography or infrared spectrometers.

    Get Price
  • Inorganic volatile fluorides obtained from electrical

    Aug 01, 1979ITALY ABSTRACT Recent investigations on sulfur hexafluoride decomposition have shown the need of a rapid and efficient method for the qualitative and quantitative analysis of the reaction products. An analytical method for characterizing the gas mixture obtai- ned from the decomposition of sulfur hexafluoride in a quartz reactor submitted to an

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  • SF6 paper | Hrushaabh Mishra - Academia.edu

    This already same kind as in corona discharges but their quantitative exceeds the SF6 bond energy between SF5 – F of 3.5 – 4 eV generation rates and compositions are different. and the electron impact will dominate the decomposition process.

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  • Research on technology of online gas chromatograph for SF6

    In this paper, by virtue of the gas chromatograph-mass spectrometer system, the qualitative as well as quantitative results of SF6 decomposition by-products are presented in 50 Hz AC point-plane

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  • China Hot New Products Sf6 Gas Leakage Measurement

    Hot New Products Sf6 Gas Leakage Measurement - LK403A SF6 Decomposition SO2,HF,H2S Content Purity Moisture Analyzer – Link Electric. Product Detail Connection: Self-sealing quick connector Pressure: 0,5~ 14 bar (gaseous) with automatic flow rate regulation

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