대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 2002년도 하계학술대회 논문집 C
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- Pages.1655-1657
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- 2002
초광대역과 단일주파수(협대역) UHF 부분방전 검출기법 비교
Ultra-wide bandwidth versus narrow bandwidth PD detection techniques for UHF partial discharge monitoring system
- Park, Ki-Jun (Korea Electric Power research Institute) ;
- Goo, Sun-Geun (Korea Electric Power research Institute) ;
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Yoon, Jin-Yul
(Korea Electric Power research Institute)
- 발행 : 2002.07.10
초록
Ultra-wide bandwidth (UWB), narrow bandwidth (single frequency), and a combination of both technologies have been studied for the ultra-high frequency (UHF) partial discharge (PD) monitoring system as a detection scheme. We have experimentally compared those detection methods using a mock-up of 362 kV class single phase gas-insulated switchgear (GIS) and a stable PD source. A rolling-ball type PD cell that produces PDs of about 10 pC, is placed at one end of the GIS. An internal UHF PD sensor was attached several meters away from the PD source. The PD spectrum was measured up to 3 GHz. A useable bandwidth of more than 1 GHz was used to measure UWB signals from the PD. To simulate the narrow bandwidth scheme a bandwidth of 100 kHz centered at several different frequencies was used.
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