Detection of SF6 Decomposition Products Generated by DC Corona Discharge Using a Carbon Nanotube Gas Sensor

被引：28

作者：

Martin, Yul ^{[1
]}

Li, Zhenyu ^{[1
]}

Tsutsumi, Takuya ^{[1
]}

Shou, Ryuta ^{[1
]}

Nakano, Michihiko ^{[1
]}

Suehiro, Junya ^{[1
]}

Ohtsuka, Shinya ^{[2
]}

机构：

[1] Kyushu Univ, Grad Sch Informat Sci & Elect Engn, Nishi Ku, Fukuoka 8190395, Japan

[2] Kyushu Inst Technol, Tobata Ku, Kitakyushu, Fukuoka 8048550, Japan

来源：

IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION | 2012年 / 19卷 / 02期

基金：

日本学术振兴会;

关键词：

HVDC transmission lines; corona; SF6; decomposition gas; carbon nanotube; Fourier transformation infrared spectroscopy (FTIR); PD DETECTION; SENSITIVITY; DEGRADATION; FABRICATION;

D O I：

10.1109/TDEI.2012.6180262

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper describes application of carbon nanotube (CNT) gas sensor to detection of SF6 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 SF6 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 SF6 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, SF6 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.

引用

页码：671 / 676

页数：6

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