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전재일,이정수,송시준,정철우,박원주,이광식,김정배,김민수 한국조명전기설비학회 2003 조명·전기설비학회논문지 Vol.17 No.6
본 논문은 자기광학효과에 의한 초고압 전력설비에서의 광전류 센서의 특성에 대한 기초 연구를 하였다. 광원은 He-Ne laser(633[nm])를 사용하고, 수신부는 PIN-Photodiode를 사용하였다. Faraday 효과에 의한 편광면의 회전각은 도체에 인가된 전류에 비례하므로 광섬유를 도체 주위에 감아서 센싱부를 구성하였다. 광섬유센서를 통과한 광신호를 입력편광에 대하여 $\theta$방향으로 정렬된 검광자를 통과시켜 그 회 각을 분석하여 l00[A] 에서 1000[A] 까지의 광 CT 동작특성과 60[Hz] 교류전류측정을 하였다. 측정 결과에서는 전류에 따른 출력 신호가 선형적으로 증가함을 알 수 있었고 파이버의 권수에 따른 출력차이를 통해 파이버의 권수가 많을수록 강도가 커진다는 것을 알 수 있었다. 또한 자장과 감긴 파이버 사이의 매질에 따라 출력의 차이뿐만 아니라 선형성까지도 차이가 난다는 것을 알 수 있었다. 기준값과 광전류 센서의 출력 강도와의 오차율을 구했을 때 약 $\pm$7% 이하의 오차가 나왔고 이는 매질과 권수에 따라 그 오차율이 점점 나아질 수 있다는 것을 확인 시켜주었다. In this paper, we described the laboratory layout of the optical CT in connection with the measurement of large current based on Magneto-Optic Effects. It was used He-Ne laser for light source and was used PIN-Photodiode for light receiver. The sensing section was organized by winding optical fiber around conductor on the concept that the rotation angle of polarizing axis by Faraday Effect is proportional to the applied current in to conduction. The optical signal passed through optical fiber sensor was induced to analyzer arranged in the direction of $\theta$ for input polarization, and then analyzed its rotation angle and researched on operating characteristics of optical CT for 60[Hz] AC current measurement from l00[A] to 1000[A] was carried out. In this results, the output signals induced linearly with the current and proved that the intensity is increased with increasing turns of fiber through output differences which in accordance with turns of fiber and we verified that there is not only difference of the output with the medium between electric field and optical fiber, but also the lineality. Measuring the references and output intensities of the optical CT, ratio errors were within $\pm$7%. This confirmed that error rate will be improved by each medium and turns.
안성환,황동원,최준영,송시준,전용우,박원주,이광식 영남대학교 공업기술연구소 2001 工業技術硏究所論文集 Vol.29 No.1
This paper describes the development of sputtered tungsten electrode for discharge tube by making use of Sputtering method using plasma. The Xe discharge tube was designed and fabricated by using sputtered tungsten electrode, and the ICCD(Intensified Charged Coupled Device) and monochromator were used in order to observe the discharge image distribution and to measure the signal intensity. As a result, the emission light form the electrode was spreaded almost uniformly over a wide wavelength band, and the discharge image distribution and the signal intensity show quite a uniform distribution. The emission light from the Xe discharge tube was peaked at 488[nm] and 648[nm].
Faraday 효과를 이용한 광섬유 전류센서에 관한 연구
이정수(Jung-Soo Lee),송시준(Si-Joon Song),전재일(Jea-Il Jeon),박원주(Won-Zoo Park),이광식(Kwang-Sik Lee),김정배(Jung-Bae Kim),송원표(Won-Pyo Song) 한국조명·전기설비학회 2002 한국조명·전기설비학회 학술대회논문집 Vol.2002 No.-
In this paper, we described the laboratory layout of the optical CT in connection with the measurement of large current for the GIS. The aim of this study is the development and application of optical CT based on Faraday effect. It was used He-Ne laser for light source (633nm) and was used PIN-Photodiode for light receiver. The laser source passes through optical fiber in single mode. We used the polarizer to polarize the light source and the beam splitter to divide the output light, and the optical fiber is connected for the measuring the angle polarized in the magnetic field.