Highly sensitive photoacoustic multicomponent gas sensor for SF<sub>6</sub> decomposition online monitoring

Yin, Xukun; Dong, Lei; Wu, Hongpeng; Zhang, Lei; Ma, Weiguang; Yin, Wen; Liu, Xiao; Jia, Suotang; Tittel, Frank K.

doi:10.1364/oe.27.00a224

Cited by 54 publications

(35 citation statements)

References 34 publications

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“…According to current researches (Yin et al, 2019;Zhang et al, 2018a;Zhang et al, 2018b), in the wavelength range between 198 and 310 nm, SO 2 exhibited two strong absorption band, which were between 190 and 220 nm ( 1 B 2 / 1 A 1 ) and 250 nm to 310 nm ( 1 A 2 , 1 B 1 / 1 A 1 ). H 2 S occurs with an absorption band between 160 and 250 nm.…”

Section: Methodsmentioning

confidence: 93%

Cantilever enhanced based photoacoustic detection of SF₆ decomposition component SO₂ using UV LED

Chen

Zhao

et al. 2022

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Purpose This paper aims to establish a photoacoustic detection system for SO2 using UV-LED and testify its feasibility for sensitive measurement. The work in this paper can avoid potential crossover interference in infrared (IR) range and also balance the capability and cost of feasible excitation for photoacoustic detection system. Design/methodology/approach In this experimental work, a cantilever-enhanced–based photoacoustic SO2 detection system using an ultraviolet (UV) LED light source with a light power of 4 mW as the excitation was established. Findings A feasible photoacoustic detection system for SO2 using UV-LED was established. Experimental results demonstrate that the detection limit of the system can reach the level of 0.667 ppm, which can serve as a reference for the application of PAS in insulation fault diagnosis. Originality/value This work investigated the potential of using ultraviolet photoacoustic spectroscopy to detect trace SO2, which provided an ideal replacement of infrared-laser-based detection system. In this paper, a photoacoustic detection system using LED with a low light power was established. Low light power requirement can expand the options of light sources accordingly. In this paper, the absorption characteristics of SO2 in the presented detection system and ultraviolet range were studied. And the detection limit of the presented system was given. Both of which can provide reference to SO2 detection in ambient SF6.

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Section: Methodsmentioning

confidence: 93%

Cantilever enhanced based photoacoustic detection of SF₆ decomposition component SO₂ using UV LED

Chen

Zhao

et al. 2022

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“…Besides, the accumulate of these chemically active decomposition gases with the action of H 2 O will corrode electrodes and reduce the insulating performance of the electrical equipment, and may ultimately pose an assault to industrial safety. It has been experimentally verified that the SF 6 decomposition gas concentrations and formation rates are associated with the different partial discharge insulating faults [14] , [15] , [16] . Moreover, Tang et al [17] in 2012 found that the production of CF 4 was inhibited, but the generation of SOF 2 and SO 2 F 2 was promoted with the increasing of O 2 concentration.…”

Section: Introductionmentioning

confidence: 94%

Compact QEPAS humidity sensor in SF6 buffer gas for high-voltage gas power systems

Yin

Gao

et al. 2022

Photoacoustics

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In SF 6 insulated high-voltage gas power systems, H 2 O is the most problematic impurity which not only decreases insulation performance but also creates an acidic atmosphere that promotes corrosion. Corrosion damages electrical equipment and leads to leaks, which pose serious safety hazards to people and the environment. A QEPAS-based sensor system for the sub-ppm level H 2 O detection in SF 6 buffer gas was developed by use of a near-infrared commercial DFB diode laser. Since the specific physical constants of SF 6 are strongly different from that of N 2 or air, the resonant frequency and Q -factor of the bare quartz tuning fork (QTF) had changed to 32,763 Hz and 4173, respectively. The optimal vertical detection position was 1.2 mm far from the QTF opening. After the experimental optimization of acoustic micro-resonator (AmR) parameters, gas pressures, and modulation depths, a detection limit of 0.49 ppm was achieved for an averaging time of 1 s, which provided a powerful prevention tool for the safety monitoring in power systems.

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“…Conventionally, the gas sensing system needs a bulky gas chamber to ensure a strong light-gas interaction for low detection limit [36][37][38] . As is well known, micro-resonators are usually used to enhance the light-matter interaction 30 , which is able to reduce the sensor dimensions for distributed or low-load platform while keeping a high performance.…”

Section: Mechanismmentioning

confidence: 99%

On-chip readout plasmonic mid-IR gas sensor

Chen¹,

Li²,

Zheng³

et al. 2020

Opto-Electronic Advances

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Gas identification and concentration measurements are important for both understanding and monitoring a variety of phenomena from industrial processes to environmental change. Here a novel mid-IR plasmonic gas sensor with on-chip direct readout is proposed based on unity integration of narrowband spectral response, localized field enhancement and thermal detection. A systematic investigation consisting of both optical and thermal simulations for gas sensing is presented for the first time in three sensing modes including refractive index sensing, absorption sensing and spectroscopy, respectively. It is found that a detection limit less than 100 ppm for CO 2 could be realized by a combination of surface plasmon resonance enhancement and metal-organic framework gas enrichment with an enhancement factor over 8000 in an ultracompact optical interaction length of only several microns. Moreover, on-chip spectroscopy is demonstrated with the compressive sensing algorithm via a narrowband plasmonic sensor array. An array of 80 such sensors with an average resonance linewidth of 10 nm reconstructs the CO 2 molecular absorption spectrum with the estimated resolution of approximately 0.01 nm far beyond the state-of-the-art spectrometer. The novel device design and analytical method are expected to provide a promising technique for extensive applications of distributed or portable mid-IR gas sensor.

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Highly sensitive photoacoustic multicomponent gas sensor for SF₆ decomposition online monitoring

Cited by 54 publications

References 34 publications

Cantilever enhanced based photoacoustic detection of SF₆ decomposition component SO₂ using UV LED

Cantilever enhanced based photoacoustic detection of SF₆ decomposition component SO₂ using UV LED

Compact QEPAS humidity sensor in SF6 buffer gas for high-voltage gas power systems

On-chip readout plasmonic mid-IR gas sensor

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Highly sensitive photoacoustic multicomponent gas sensor for SF6 decomposition online monitoring

Cited by 54 publications

References 34 publications

Cantilever enhanced based photoacoustic detection of SF6 decomposition component SO2 using UV LED

Cantilever enhanced based photoacoustic detection of SF6 decomposition component SO2 using UV LED

Compact QEPAS humidity sensor in SF6 buffer gas for high-voltage gas power systems

On-chip readout plasmonic mid-IR gas sensor

Contact Info

Product

Resources

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Highly sensitive photoacoustic multicomponent gas sensor for SF₆ decomposition online monitoring

Cantilever enhanced based photoacoustic detection of SF₆ decomposition component SO₂ using UV LED

Cantilever enhanced based photoacoustic detection of SF₆ decomposition component SO₂ using UV LED