TY - JOUR
T1 - Calibration methods of carbon nanotube gas sensor for partial discharge detection in SF 6
AU - Ding, Weidong
AU - Hayashi, Ryota
AU - Suehiro, Junya
AU - Zhou, Guangbin
AU - Imasaka, Kiminobu
AU - Hara, Masanori
N1 - Funding Information:
This work was partly supported by Grants-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (No. 16360207) and a fellowship from the Iketani Science and Technology Foundation of Tokyo, Japan (No. 0161009A).
PY - 2006/4
Y1 - 2006/4
N2 - The authors proposed a new type of gas sensor for high sensitive detection of decomposition products generated by partial discharge (PD) in SF 6 gas. The sensor employed carbon nanotubes (CNTs) as gas sensing transducer and was fabricated by electrokinetic manipulation of CNTs using dielectrophoresis. Due to complicated gas decomposition process of SF 6 gas, calibration of the CNT gas sensor is an essential and challenging subject in order to realize reliable and stable detection of PD under practical conditions. In this paper, two methods for the CNT gas sensor calibration were proposed and tested. The first method was based on initial conductance dependence of the CNT gas sensor response. The CNT gas sensor response to PD increased almost linearly with the amount of CNT trapped onto the sensor electrode, which could be quantified by the initial conductance of the sensor. However, the calibration accuracy of this method was about 50 % and was not high enough for practical use. The second method employed NO 2 (nitrogen dioxide) as calibration gas because of the similarity in the CNT sensor response to PD decomposition products and NO 2. It was found that the accuracy of the NO 2 calibration was about 10 % and far better than the first method. Finally, effectiveness of the NO 2 calibration was demonstrated by a PD monitoring test in which two CNT sensors were simultaneously exposed to SF 6 decomposition products with identical concentration.
AB - The authors proposed a new type of gas sensor for high sensitive detection of decomposition products generated by partial discharge (PD) in SF 6 gas. The sensor employed carbon nanotubes (CNTs) as gas sensing transducer and was fabricated by electrokinetic manipulation of CNTs using dielectrophoresis. Due to complicated gas decomposition process of SF 6 gas, calibration of the CNT gas sensor is an essential and challenging subject in order to realize reliable and stable detection of PD under practical conditions. In this paper, two methods for the CNT gas sensor calibration were proposed and tested. The first method was based on initial conductance dependence of the CNT gas sensor response. The CNT gas sensor response to PD increased almost linearly with the amount of CNT trapped onto the sensor electrode, which could be quantified by the initial conductance of the sensor. However, the calibration accuracy of this method was about 50 % and was not high enough for practical use. The second method employed NO 2 (nitrogen dioxide) as calibration gas because of the similarity in the CNT sensor response to PD decomposition products and NO 2. It was found that the accuracy of the NO 2 calibration was about 10 % and far better than the first method. Finally, effectiveness of the NO 2 calibration was demonstrated by a PD monitoring test in which two CNT sensors were simultaneously exposed to SF 6 decomposition products with identical concentration.
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U2 - 10.1109/TDEI.2006.1624280
DO - 10.1109/TDEI.2006.1624280
M3 - Article
AN - SCOPUS:33646413964
SN - 1070-9878
VL - 13
SP - 353
EP - 360
JO - IEEE Transactions on Dielectrics and Electrical Insulation
JF - IEEE Transactions on Dielectrics and Electrical Insulation
IS - 2
ER -