Development of SF6 decomposition gas sensor

Minagawa, Tadao; Kawada, M.; Yamauchi, Shiro; Kamei, Mitsuhito; Nishida, C.

doi:10.1016/s0257-8972(03)00095-1

Cited by 23 publications

(6 citation statements)

References 11 publications

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“…Through PD analysis, people can estimate and determine the running status of insulation equipment, which provides a workable manner to guarantee the safe operation of the whole power system. Among the various PD detection methods, physical sensors method detecting the ultra-high frequency electromagnetic wave [10], acoustic emission [11] or optical emission [12], and the chemical sensors method detecting the SF 6 decomposed species [13][14][15] are the most widely studied techniques with high popularity and good effectivity. It is worth noting that gas detecting method, sensing the SF 6 decomposed products and reflecting the entire PD activity, is much more advantageous than others to diagnose operation status of related devices [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Nanomaterials‐based gas sensors of SF ₆ decomposed species for evaluating the operation status of high‐voltage insulation devices

et al. 2019

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In recent years, many novel sensing nanomaterials were explored experimentally and theoretically as chemical gas sensors to detect sulphur hexafluoride (SF 6) decomposed species with rapid response, high sensitivity and selectivity, as well as low cost, in order to estimate and guarantee the operation status of SF 6 insulation devices. However, there has been no systemic review yet to comprehensively understand their sensing mechanism and conclude their sensing application. Such kinds of nanomaterials include traditional carbon-based materials such as carbon nanotube and graphene, metal oxides such as SnO 2 , ZnO and TiO 2 , transition metal dichalcogenides such as MoS 2 monolayer and MoTe 2 monolayer as well as graphene-like InN monolayer. A systemic review would be significant to give a profound insight into the exploration of nanomaterial-based chemical gas sensors in the field of electrical engineering and to help youth scholars first stepping in this field rapidly master the progress inside. Thus, the authors attempt to complete this review here. They are hopeful that this review could provide some guidance to fulfil such purpose in the near future, and it would be full of perspective to explore more novel nanomaterials as defect indicators in SF 6 insulated devices. Furthermore, it is their hope that this review could broaden the sensing application of admirable nanomaterials in many fields such as environmental monitoring and pollutant scavenging.

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Section: Introductionmentioning

confidence: 99%

Nanomaterials‐based gas sensors of SF ₆ decomposed species for evaluating the operation status of high‐voltage insulation devices

et al. 2019

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“…However, UHF, TEV, and the ultrasonic method are easily affected by interference signals, and the gas chromatographic method is an offline detection method. Because of the non-contact, high accuracy, and low detection limit features of gas sensors, the gas sensor detection method has been an effective way to realize the online detection of SF 6 -insulated equipment based on SF 6 decomposition components detection [15,16]. …”

Section: Introductionmentioning

confidence: 99%

Ni-CNT Chemical Sensor for SF6 Decomposition Components Detection: A Combined Experimental and Theoretical Study

Tao

Zhang

et al. 2018

Sensors

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SF6 decomposition components detection is a key technology to evaluate and diagnose the insulation status of SF6-insulated equipment online, especially when insulation defects-induced discharge occurs in equipment. In order to detect the type and concentration of SF6 decomposition components, a Ni-modified carbon nanotube (Ni-CNT) gas sensor has been prepared to analyze its gas sensitivity and selectivity to SF6 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. The conductivity increases in the following order: H2S > SOF2 > SO2 > SO2F2. The limit of detection of the Ni-CNT gas sensor reaches 1 ppm. In addition, the excellent recovery property of the Ni-CNT gas sensor makes it easy to be widely used. A DFT theoretical study was applied to analyze the influence mechanism of Ni modification on SF6 decomposition components detection. In summary, the Ni-CNT gas sensor prepared in this study can be an effective way to evaluate and diagnose the insulation status of SF6-insulated equipment online.

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“…However, partial discharge (PD) might be occurred around the point where the electric field is intensified in the GIS especially having operated in a long run, contributing to the decomposition of SF 6 . It has been well known that the formation of decomposition products of SF 6 , also named typical components of SF 6 , like SO 2 , H 2 S, SO 2 F 2 , CF 4 , and SOF 2 [ 3 – 5 ], could be attributed to the discharge-induced SF 6 decomposition as well as the succeeding reactions with contaminants such as air or water vapor [ 6 , 7 ]. Previous researches have demonstrated that these typical gases are able to accelerate the rate of equipment corrosion, increasing the possibility of system paralysis [ 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

Mechanism and Application of Carbon Nanotube Sensors in SF6 Decomposed Production Detection: a Review

et al. 2017

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Carbon nanotubes (CNTs) have aroused extensive attentions as a new category of gas sensor materials owing to their outstanding performance for detecting specific gas among a variety of ones through diverse gas responses. This review summarizes the adsorption mechanism of CNTs and their properties related to the detection of sulfur hexafluoride (SF6) decomposed gases that generated in gas insulation switchgear (GIS) of power system. Their performances as sensors of both experimental analysis and theoretical calculation for various kinds of decomposed gases are summarized, and the further research trend on CNTs in the detection of SF6 decomposition components is also put forward.

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Development of SF6 decomposition gas sensor

Cited by 23 publications

References 11 publications

Nanomaterials‐based gas sensors of SF ₆ decomposed species for evaluating the operation status of high‐voltage insulation devices

Nanomaterials‐based gas sensors of SF ₆ decomposed species for evaluating the operation status of high‐voltage insulation devices

Ni-CNT Chemical Sensor for SF6 Decomposition Components Detection: A Combined Experimental and Theoretical Study

Mechanism and Application of Carbon Nanotube Sensors in SF6 Decomposed Production Detection: a Review

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Development of SF6 decomposition gas sensor

Cited by 23 publications

References 11 publications

Nanomaterials‐based gas sensors of SF 6 decomposed species for evaluating the operation status of high‐voltage insulation devices

Nanomaterials‐based gas sensors of SF 6 decomposed species for evaluating the operation status of high‐voltage insulation devices

Ni-CNT Chemical Sensor for SF6 Decomposition Components Detection: A Combined Experimental and Theoretical Study

Mechanism and Application of Carbon Nanotube Sensors in SF6 Decomposed Production Detection: a Review

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Nanomaterials‐based gas sensors of SF ₆ decomposed species for evaluating the operation status of high‐voltage insulation devices

Nanomaterials‐based gas sensors of SF ₆ decomposed species for evaluating the operation status of high‐voltage insulation devices