Detection of SF 6 decomposition products generated by DC corona discharge using a carbon nanotube gas sensor

Yul Martin, Zhenyu Li, Takuya Tsutsumi, Ryuta Shou, Michihiko Nakano, Junya Suehiro, Shinya Ohtsuka

研究成果: Contribution to journalArticle査読

33 被引用数 (Scopus)

抄録

This paper describes application of carbon nanotube (CNT) gas sensor to detection of SF 6 decomposition products generated by positive or negative DC corona discharge. The present authors have demonstrated CNT gas sensor-based partial discharge (PD) detection, aiming to develop a new diagnosis method of gas-insulated switchgear (GIS) filled with high pressure SF 6 gas. In our previous studies, PD was generated by ac high voltage because most of GIS are designed and operated for conventional high voltage ac (HVAC) power transmission lines. In recent years, however, the electrical power industry has shown a trend shifting from HVAC to high voltage dc (HVDC) power transmission, which has many advantages such as higher power capacity and lower power loss. This technological trend motivated us to explore and expand the application of CNT gas sensor to detection of SF 6 decomposition products generated by dc corona discharges. It was found that the CNT gas sensor exhibited significant response to dc corona discharge depending on the voltage polarity. In order to elucidate the mechanism of the polarity effect, SF 6 decomposition products were analyzed by Fourier transformation infrared (FTIR) spectroscopy as well as using a gas detection tube. Based on comparison between the polarity effects on the CNT sensor response and the decomposition products, a possible contribution of HF to the CNT gas sensor response was suggested.

本文言語英語
論文番号6180262
ページ(範囲)671-676
ページ数6
ジャーナルIEEE Transactions on Dielectrics and Electrical Insulation
19
2
DOI
出版ステータス出版済み - 4 2012

All Science Journal Classification (ASJC) codes

  • 電子工学および電気工学

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