대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 2004년도 추계학술대회 논문집 전기설비전문위원
- /
- Pages.63-66
- /
- 2004
UHF 이중대역법을 이용한 GIS PD 분석
GlSPD Analysis Using UHF Dual-Band Method
- Yi, Sang-Hwa (Power Facility Diagnosis Research Group, KERI) ;
- Choi, Jae-Gu (Power Facility Diagnosis Research Group, KERI) ;
-
Kim, Kwang-Hwa
(Power Facility Diagnosis Research Group, KERI)
- 발행 : 2004.11.12
초록
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.
키워드