Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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GlSPD Analysis Using UHF Dual-Band Method

UHF 이중대역법을 이용한 GIS PD 분석

  • 이상화 (전력 설비 진단연구그룹, 한국전기연구원) ;
  • 최재구 (전력 설비 진단연구그룹, 한국전기연구원) ;
  • 김광화 (전력 설비 진단연구그룹, 한국전기연구원)
  • Published : 2004.11.12
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Abstract

It is widely known that the ultra high frequency (UHF) method that detects the electromagnetic wave of the PD pulses in the gas insulated space is one of the most competitive methods for its high sensitivity. From the above point of view, this paper describes the characteristics of GIS PD signals measured with ultra wide band (UWB) GIS PD defecting system in which PD signals are defected into the dual UHF band. Thc UWB PD detection system consists of the UWB UHF coupler, the UWB low noise amplifier (LNA) and the oscilloscope. The dual bands for PD signals are 0.5-2GHz(full band) and 1-2GHz(high band). As results, it was found that the partial discharges of each defect have their own characteristic pattern and the ratio of High hand to Full band increases with gas pressure.

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