Journal of the Korean Institute of Illuminating and Electrical Installation Engineers (조명전기설비학회논문지)

The Korean Institute of IIIuminating and Electrical Installation Engineers (한국조명전기설비학회)
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Fiber-Optic Current Sensor Using a Faraday Rotator Glass Fiber Sensor Coil

Faraday Rotator Glass 광섬유 전류센서

  • 김기혁 (전북대학교 전자정보공학부) ;
  • 송민호 (전북대학교 전자정보공학부)
  • Published : 2004.07.01
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Abstract

We developed a fiber-optic CT for large current monitoring in power systems. We used a FRG fiber sensor coil to suppress CT output degradation caused by linear birefringence, and different optical sources were used to compare their noise characteristics. From the experiments, we obtained output variation less than $\pm$0.4(%) when the sensor coil suffered mechanical perturbations, and the ASE source showed -23(㏈) less noise in the output than singlemode laser diode.

전력계통 시스템의 대전류 측정용으로 편광 분석형 광섬유 전류센서를 제작하였다. 선형복굴절에 의한 출력의 왜곡을 최소화하기 위하여 FRG 광섬유를 센서코일로 사용하였으며, 다양한 광원을 이용하여 광원에 따른 출력 노이즈 비교분석을 수행하였다. FRG광섬유 센서코일에 기계적 변형을 인가한 경우 $\pm$0.4(%) 이내의 출력안정도를 얻었으며, ASE 광폭 광원을 사용할 경우 단일모드 레이저에 비해 23(㏈) 정도의 노이즈 감쇄 효과를 얻을 수 있음을 확인하였다.

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References

  1. A. J. Rogers, "Optical-fibre current measurement," Int. J. Optoelectronics, vol. 3. pp. 391-407, 1988.
  2. J. Blake, P. Tantaswadi, R. T. de Carvalho, "In-Line Sagnac Interferometer Current Sensor," IEEE Transaction on power Delivery, Vol. 11, No. 1, pp. 116-121, 1996. https://doi.org/10.1109/61.484007
  3. F. Briffod, L. Thevenaz, P.-A. Nicati, A. Kung, p. A. Robert, "Polarimetric current sensor using an in-line Faraday rotator," IEICE Trans. Electron, Vol. E83-C, No. 3. pp. 331-335, 2000.
  4. G. W. Day, K. B. Rochford, A. H. Rose, "Fundamentals and problems of fiber current sensors," Tech. Digest, 11th OFS Conf., Sapporo, Japan, pp. 124-129, 1996.
  5. R. Ulrich and A. Simon, "Polarization optics of twisted single-mode fibers," Appl. opt, vol. 18, No. 13, pp. 2241-2251, 1979. https://doi.org/10.1364/AO.18.002241
  6. D. Tang, A. H. Rose, G. W. Day, and S. M. Etzel, "Annealing of linear birefringence in single-mode fiber coils: application to optical fiber current sensors," J. Lightwave Technol., vol. 9, no. 8, pp. 1031-1037, 1991. https://doi.org/10.1109/50.84170
  7. K. Kurosawa and I. Masuda, "Faraday effect current sensor using flint glass fiber for the sensing element," Proc. of OFS, 1993.
  8. K. Kurosawa, S. Yoshida, and K. Sakamoto, "Polarization properties of the flint glass fiber," J. Lightwave Technol., vol. 13, no. 7, pp. 1378-1384, 1995. https://doi.org/10.1109/50.400673
  9. N. C. Pistoni and M. Martinelli, "Vibration insensitive fiber-optic current sensor," Opt. Lett., Vol. 18, No. 4, pp. 314-316, 1993. https://doi.org/10.1364/OL.18.000314