대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 2002년도 하계학술대회 논문집 C
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- Pages.1649-1651
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- 2002
UHF 부분방전 감시 장치를 위한 초광대역 검출장치 개발 및 특성조사
Development and characterization of a ultra-wide bandwidth video detector for the UHF partial discharge monitoring system
- Park, Ki-Jun (Korea Electric Power research Institute) ;
- Goo, Sun-Geun (Korea Electric Power research Institute) ;
- Yoon, Jin-Yul (Korea Electric Power research Institute)
- 발행 : 2002.07.10
초록
Ultra-wide bandwidth (UWB) detection method has been widely used as a front end detection scheme for the ultra-high frequency (UHF) partial discharge (PD) monitoring systems. A broad-band video detector module was developed and characterized for the UHF UWB PD detection systems. The useable bandwidth of the module is more than 2 GHz and it is optimized for 50-ohm systems. The detection sensitivity and dynamic range of the module were characterized by using a known ns-width RF pulses of GHz range. The dynamic range is more than 6-decades and the module can detect pulsed RF signals down to 1 nW. The detector module can eliminate expensive equipment such as high speed oscilloscopes and radio frequency (RF) spectrum analyzers. Therefore, it enables one to use slow speed data acquisition systems for the PD monitoring at the UHF range. The detector module was used to detect real PDs of about <3 pC. The module converts the UWB PD signals into a low-bandwidth video signal with a high signal-to-noise ratio.
키워드