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TiO2 nanotube array sensor for detecting the SF6 decomposition product SO2.

Zhang X, Zhang J, Jia Y, Xiao P, Tang J - Sensors (Basel) (2012)

Bottom Line: 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 state of power equipment.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.

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China. zhxx@cqu.edu.cn

ABSTRACT
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 state of power equipment. 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. The test results show that the TiO(2) nanotube sensor array has good response to SO(2) gas, and by ultraviolet radiation, the sensor can remove attached components very efficiently, shorten recovery time, reduce chemical poisoning, and prolong the life of the components.

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Sensor response of the TiO2 nanotube array to different SF6 decomposition components.
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f9-sensors-12-03302: Sensor response of the TiO2 nanotube array to different SF6 decomposition components.

Mentions: SO2 is produced by SF6 decomposition. It is necessary to study the TiO2 nanotubes sensor response to SF6 gas decomposition products and background gas SF6. According to methods and procedures of the experiment in Section 2.3, under the condition that the sensor is under a 200 °C working temperature, the gas sensitivity (response curve) of the TiO2 nanotube array sensor is measured at 50 ppm SO2, 50 ppm SOF2, 50 ppm SO2F2 and 99.999% SF6, and the result is shown in Figure 9. We can see that the sensor responses to 50 ppm SO2, 50 ppm SOF2, 50 ppm SO2F2 and 99.999% SF6 are −76%, −7.8%, −5.5% and −7.7%, respectively. This illustrates that the TiO2 nanotubes sensor has good selectivity for SO2 gas. It is suitable for checking SO2 gas, the main component of SF6 decomposition in the GIS.


TiO2 nanotube array sensor for detecting the SF6 decomposition product SO2.

Zhang X, Zhang J, Jia Y, Xiao P, Tang J - Sensors (Basel) (2012)

Sensor response of the TiO2 nanotube array to different SF6 decomposition components.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3376569&req=5

f9-sensors-12-03302: Sensor response of the TiO2 nanotube array to different SF6 decomposition components.
Mentions: SO2 is produced by SF6 decomposition. It is necessary to study the TiO2 nanotubes sensor response to SF6 gas decomposition products and background gas SF6. According to methods and procedures of the experiment in Section 2.3, under the condition that the sensor is under a 200 °C working temperature, the gas sensitivity (response curve) of the TiO2 nanotube array sensor is measured at 50 ppm SO2, 50 ppm SOF2, 50 ppm SO2F2 and 99.999% SF6, and the result is shown in Figure 9. We can see that the sensor responses to 50 ppm SO2, 50 ppm SOF2, 50 ppm SO2F2 and 99.999% SF6 are −76%, −7.8%, −5.5% and −7.7%, respectively. This illustrates that the TiO2 nanotubes sensor has good selectivity for SO2 gas. It is suitable for checking SO2 gas, the main component of SF6 decomposition in the GIS.

Bottom Line: 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 state of power equipment.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.

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China. zhxx@cqu.edu.cn

ABSTRACT
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 state of power equipment. 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. The test results show that the TiO(2) nanotube sensor array has good response to SO(2) gas, and by ultraviolet radiation, the sensor can remove attached components very efficiently, shorten recovery time, reduce chemical poisoning, and prolong the life of the components.

Show MeSH
Related in: MedlinePlus