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단일벽 탄소나노튜브 센서를 이용한 SF₆ 가스절연장치의 부분방전 진단
정세훈(Sehun Jung),이상욱(Sangwoog Lee),장용무(Yongmoo Chang),이종철(Jongchul Lee),김영진(Youngjin Kim),백승현(Seunghyun Baik) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.5
The Partial discharge (PD) detection in the early stages has become increasingly important in order to avoid the fatal failure of a gas-insulated system. This paper shows that single-walled carbon nanotube (SWNT) sensors, fabricated by alternating current dielectrophoresis, are useful device for the detection of PD activity. Upon exposure to dissociated and oxidized species of SF? generated by PD activity in a closed chamber, the Electrical conductance of the SWNT sensor is found to dramatically increase. The SWNT sensor response was compared with an apparent charge measured according to the IEC 60270 standard. The oxidizing effect of partially filled air was also investigated.