한국정보통신학회:학술대회논문집 (Proceedings of the Korean Institute of Information and Commucation Sciences Conference)
- 한국해양정보통신학회 2005년도 추계종합학술대회
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- Pages.208-211
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- 2005
극미소 부분방전 측정시스템의 설계 및 제작
Design and Fabrication of an Ultra-low Partial Discharge Measurement System
- Seo, Hwang-Dong (Korea Maritime University) ;
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Song, Jae-Yong
(Korea Maritime University) ;
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Moon, Seung-Bo
(Korea Maritime University) ;
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Kil, Gyung-Suk
(Korea Maritime University) ;
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Kwon, Jang-Woo
(Tongmyoung University)
- 발행 : 2005.10.28
초록
This paper presents an ultra-low partial discharge(PD) measurement system that has been accepted as a non-destructive method to estimate electrical insulation of low-voltage electric devices. The PD measurement system is composed of a coupling network, a low noise amplifier, and associated electronics. A shielding box is used to make a better condition against electromagnetic interference. A low cut-off frequency of the coupling network was 1MHz(-3 dB). Calibration tests on laboratory set-up have shown that the PD measurement system has a stable sensitivity of 11.4mV/pC. In an application experiment on a low-voltage induction motor(5HP), we could detect 0.77pC level of partial discharge pulse at the applied voltage of AC 664 V