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

  • 제20권5호
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  • Pages.64-71
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  • 2006
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  • 1229-4691(pISSN)
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  • 2287-5034(eISSN)
한국조명전기설비학회 (The Korean Institute of IIIuminating and Electrical Installation Engineers)
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전력설비 보호를 위한 분배형 광섬유 온도센서

Distributed Fiber-Optic Temperature Sensor Network for Protection of Electric Power Systems

  • 박형준 (전북대학교 전자정보공학부) ;
  • 이준호 (호서대학교 전기정보통신공학부) ;
  • 송민호 (전북대학교 전자정보공학부)
  • 발행 : 2006.06.30
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초록

전력설비의 비정상적인 온도변화를 감시할 목적으로 10개의 광섬유격자를 이용하여 $1[^{\circ}C]$ 이내의 온도분해능을 가지는 준분배형 광섬유 온도센서를 제작하였다. 파장가변 FP 필터를 스캔하여 얻어지는 PD 출력파형의 피크위치를 검색하여 광섬유격자 센서의 출력변화를 읽어내었고, 가우시안 line-fitting 알고리즘으로 광섬유격자의 반사스펙트럼 왜곡에 의한 영향을 보상하고 정밀도를 향상시켰다. 제작한 센서시스템과 기준 온도계로 사용한 thermocouple 간의 측정값 오차는 1[%] 이내이며, 선형화 오차는 약 0.37[%]으로 측정되었다.

We developed a fiber-optic temperature sensor system, with 10 fiber Bragg gratings, for abnormal high-temperature monitoring in power systems. We used Gaussian line-fitting algorithm to compensate the spectrum distortion in the wavelength-scanned Farby-Perot filter demodulation scheme. Compared with highest-peak-detection method, the proposed algorithm substantially reduced measurement errors. The overall measurement error was less than 1[%] compared with the reference thermocouple and the linearity error was 0.37[%].

키워드

참고문헌

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  7. Z. Jin and M. song, 'Fiber grating sensor array interrogation with time-delayed sampling of a wavelength-scanned fiber laser,' IEEE Photon. Technol. Lett., vol 16, pp. 1924-1926, 2004 https://doi.org/10.1109/LPT.2004.831303
  8. C. C. Chan W. Jin, H. L. Ho, D. N. Wang, and Y. Wang, 'Improvement of measurement accuracy of fibre Bragg grating sensor systems by use of gas absorption lines as multi-wavelength reference,' Electron. Lett., 37, 742-743, 2001 https://doi.org/10.1049/el:20010206
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피인용 문헌

  1. Demodulation of FBG and Acoustic Sensors Embedded in a Fiber-Optic Sagnac Loop vol.26, pp.2, 2012, https://doi.org/10.5207/JIEIE.2012.26.2.044
  2. A Hybrid Fiber-Optic Sensor System for Multi-Stress Condition Monitoring of Wind Turbines vol.29, pp.8, 2015, https://doi.org/10.5207/JIEIE.2015.29.8.076
  3. Development of Temperature Measurement System Using Fiber Optics Linear Transmittance Filter with Fiber Bragg Grading Sensor vol.33, pp.4, 2016, https://doi.org/10.7736/KSPE.2016.33.4.303