Design and Characteristics of AE Sensor for Detection of Metallic particle in GIS

GIS 내의 금속이물 탐지용 AE 센서의 설계와 특성

  • 홍재일 (동서울대학 전기과) ;
  • 정영호 (한전 전력연구원 전력계통연구실) ;
  • 류주현 (세명대학교 전기공학과)
  • Published : 2000.06.01

Abstract

In order to detect the partial discharge with the metallic particle in GIS the AE(Acoustic Emission) sensor was designed and simulated by ANSYS 5.5 and manufactured as the coupled vibration mode. The measured resonant frequency and the maximum sensitivity frequency of three coupled AE sensors were as follows ; 147.88 kHz in 8.1mm $\Phi$$\times$8.1mm 128.82 kHz and 58.8 kHz in 9.5 mm$\Phi$$\times$9.5mm, 85.22 kHz and 32.6 kHz in 14.3 mm$\Phi$$\times$14.3 mm, resonant frequency of the AE sensor. The AE sensor of 9.5 mm$\Phi$$\times$9.5mm responded higher than the other coupled vibration mode AE sensor at the partial discharge detection in GIS.

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