TY - JOUR
T1 - Factors affecting PD detection in GIS using a carbon nanotube gas sensor
AU - Ding, Weidong
AU - Ochi, Kohei
AU - Suehiro, Junya
AU - Imasaka, Kiminobu
AU - Hayashi, Ryota
AU - Hara, Masanori
N1 - Funding Information:
The FTIR analysis was performed at the Center of Advanced Instrumental Analysis, Kyushu University. This research was partly supported by Grants-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (No. 18560279 and No. 18360200).
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2007/6
Y1 - 2007/6
N2 - The authors have previously demonstrated that a carbon nanotube (CNT) gas sensor can detect SF6 decomposition byproducts generated by partial discharges (PDs). There are several factors to be considered, however, before applying the CNT gas sensor to practical diagnosis of a gas-insulated switchgear (GIS). In this paper, three major factors, namely, the effects of operating temperature and installation location of the CNT gas sensor and SF 6/N2 gas mixture, were investigated. The stability of sensor conductance and the sensor response to PD were improved by controlling the sensor operating temperature. The maximum sensor response was obtained at about 70 °C. The CNT gas sensor, which was installed in an external pipe connected to the GIS tank, could detect PD generated in the tank, although the sensor response became lower and slower as the sensor was located further away from the PD source. It was found that the sensor response to PD showed a clear dependence on the mixing ratio of the SFS/N2 gas mixture. The maximum sensor response was achieved for SF6/N2 (20%/80%) gas mixture. This result was discussed based on Fourier transformation infrared (FTIR) analysis of PD decomposition byproducts adsorbed on the CNT surface.
AB - The authors have previously demonstrated that a carbon nanotube (CNT) gas sensor can detect SF6 decomposition byproducts generated by partial discharges (PDs). There are several factors to be considered, however, before applying the CNT gas sensor to practical diagnosis of a gas-insulated switchgear (GIS). In this paper, three major factors, namely, the effects of operating temperature and installation location of the CNT gas sensor and SF 6/N2 gas mixture, were investigated. The stability of sensor conductance and the sensor response to PD were improved by controlling the sensor operating temperature. The maximum sensor response was obtained at about 70 °C. The CNT gas sensor, which was installed in an external pipe connected to the GIS tank, could detect PD generated in the tank, although the sensor response became lower and slower as the sensor was located further away from the PD source. It was found that the sensor response to PD showed a clear dependence on the mixing ratio of the SFS/N2 gas mixture. The maximum sensor response was achieved for SF6/N2 (20%/80%) gas mixture. This result was discussed based on Fourier transformation infrared (FTIR) analysis of PD decomposition byproducts adsorbed on the CNT surface.
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U2 - 10.1109/TDEI.2007.369536
DO - 10.1109/TDEI.2007.369536
M3 - Article
AN - SCOPUS:34250202552
SN - 1070-9878
VL - 14
SP - 718
EP - 725
JO - IEEE Transactions on Dielectrics and Electrical Insulation
JF - IEEE Transactions on Dielectrics and Electrical Insulation
IS - 3
ER -