Study On Optical Communications, Volume. 49, Issue 5, 63(2023)

Research on the Cable Sag On-line Monitoring Using Spontaneous Brillouin Scattering

Xiao-juan LI1... Jian-ke LI1, Li-jun LIU1, Yong-qian LI2,3,*, and Li-xin ZHANG23 |Show fewer author(s)
Author Affiliations
  • 1Institute of Information Technology, Hebei University of Economics and Business, Shijiazhuang 050061, China
  • 2Department of Electronic and Communication Engineering, North China Electric Power University, Baoding 071003, China
  • 3Hebei Key Laboratory of Power Internet of Things Technology, North China Electric Power University, Baoding 071003, China
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    To improve transmission line load capacity and prevent power grid accidents, an online sag monitoring system for overhead transmission lines based on spontaneous Brillouin scattering is designed using the principles of Brillouin scattering and coherent detection. Brillouin Optical Time Domain Reflection (BOTDR) technology is used to collect the strain signal distributed along the optical fiber in real time, extract the key features of strain sensing, and realize the accurate positioning and early warning of sag anomaly points. Laboratory data and substation test results show that the system can detect and accurately locate strain change information in real time. The strain monitoring system is simple in single-end measurement and can accurately locate the strain mutation point. It can realize the early warning of cable sag abnormalities, and can timely detect and deal with potential faults to ensure the safe and stable operation of the transmission line.

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    Xiao-juan LI, Jian-ke LI, Li-jun LIU, Yong-qian LI, Li-xin ZHANG. Research on the Cable Sag On-line Monitoring Using Spontaneous Brillouin Scattering[J]. Study On Optical Communications, 2023, 49(5): 63

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    Paper Information

    Category: Research Articles

    Received: Sep. 25, 2022

    Accepted: --

    Published Online: Nov. 22, 2023

    The Author Email: LI Yong-qian (dztxlxj@126.com)

    DOI:10.13756/j.gtxyj.2023.05.010

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