分布式拉曼光纤传感技术的研究进展

Distributed fiber Raman temperature technology and its application study in power cables on-line monitoring

  • 摘要: 分布式光纤拉曼测温技术是一种新型的光纤传感技术,具有灵敏度高、可分布式测量和抗电磁干扰强等优点,非常适用于电力系统中输电线路的温度在线监测。本文概述了基于ROTDR和ROFDR技术的分布式光纤传感器的基本原理和发展现状,并综述了分布式光纤拉曼测温技术在输电线路监测中的应用,并以实例证明分布式光纤拉曼测温技术对电缆运行状态的实时在线监测。最后对分布式光纤拉曼测温技术的发展前景进行了展望。

     

    Abstract: Distributed Raman fiber sensing technology with excellent properties has become one of the main methods in temperature monitoring fields. This paper describes the fundamental sensing principle of distributed optical fibertechnology measuring temperature which based on Raman optical time domain reflectometry(ROTDR) and Raman optical frequency domain reflectometry(ROFDR). Then, this paper summaries the research progress of ROTDR and ROFDR, reviews the latest research achievements, and analyzestheir innovation and existing problem.Finally, their application prospects are forecasted comprehensively.

     

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