Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2004.07c
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- Pages.1860-1862
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- 2004
GISPD Analysis Using UHF Dual-Band Method
UHF이중대역법을 이용한 GISPD분석
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Kim, Kwang-Hwa
(Power Facility Diagnosis Research Group. KERI)
;
- Yi, Sang-Hwa (Power Facility Diagnosis Research Group. KERI) ;
- Choi, Jae-Gu (Power Facility Diagnosis Research Group. KERI)
- Published : 2004.07.14
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 detecting system in which PD signals are detected into the dual UHF band. The 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 band to Full band increases with gas pressure.
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