AE Sensor를 적용한 C-GIS내의 PD 특성

PD Characteristics in C-GIS Using AE Sensor

  • Lee, Yong-Hee (LG Industrial Systems Electrotechnology R&D Center) ;
  • Shin, Yang-Sop (LG Industrial Systems Electrotechnology R&D Center) ;
  • Jang, Su-Hyeong (LG Industrial Systems Electrotechnology R&D Center) ;
  • Seo, Jung-Min (LG Industrial Systems Electrotechnology R&D Center) ;
  • Lee, Yong-Hee (LG Industrial Systems Electrotechnology R&D Center) ;
  • Lim, Ki-Joe (Dept. of Electrical Eng Chungbuk National University)
  • 발행 : 2002.07.10

초록

The defects making partial discharge(PD) in a C-GIS(Cubicle Insulated Switchgear) initiate acoustic wave which can be detected using acoustic emission sensor placed outside or inside the C-GIS enclosure. In this paper, partial discharge property for 2 locations for AE sensor and 3 locations for defects in C-GIS are presented and PD waveforms were analyzed by PRPDA(Partial Resolved Partial Discharge Analysis). As a result, using post amplifier having gain of 10,000 and band pass filter having $20kHz{\sim}300kHz$, resolution of waveforms AE sensor signal by detected was good. Noise level was about 80 mV.

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