Journal of Applied Optics, Volume. 45, Issue 2, 467(2024)

Detection of hidden defects of multi-strand carbon fiber composite core conductor based on optical fiber sensing technology

Boyan JIA1,*... Yanwei XIA1, Hongliang LIU1, Yabing XU2 and Xiaoyu YI1 |Show fewer author(s)
Author Affiliations
  • 1Electric Power Research Institute, State Grid Hebei Electric Power Co.,Ltd., Shijiazhuang 050021, China
  • 2Cangzhou Power Supply Branch, State Grid Hebei Electric Power Co.,Ltd., Cangzhou 061000, China
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    Figures & Tables(8)
    Schematic diagram of defects detection
    Device drawing of defects detection
    Correlation between Brillouin frequency shift and temperature
    Stress detection results
    • Table 1. Related parameters of research objects

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      Table 1. Related parameters of research objects

      导线型号JLRX/F1B-360/40
      导线名称碳纤维复合芯铝绞线
      对比条件与原导线等重量
      导线结构铝:2层18股
      复合芯1×7.0
      导线截面(mm2)铝:360.7
      复合芯:38.48
      总:399.2
      导电率IACS(%)63
      导线外径/mm23.30
      导线单重/(kg·km−1)1064.6
      计算拉力/N101584
      弹性模量/GPa64(80 ℃以内)
      122(80 ℃以上)
      线膨胀系数/(10−6/℃)13.1(80 ℃以内)
      1.7(80 ℃以上)
      20 ℃时直流电阻/(Ω·km−10.0774
      长期工作温度/℃160
      短时间最高工作温度/℃180
    • Table 2. Test data of temperature-frequency calibration

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      Table 2. Test data of temperature-frequency calibration

      序号覆冰室内 温度/℃测量频率/MHz
      检测点1检测点2检测点3检测点4检测点5
      125.5422.9422.0422.1423.7422.8
      219.0416.6417.1417.3414.4415.9
      314.5410.0412.5410.7411.5410.4
      410.0403.8403.6405.6404.8405.0
      55.5398.5398.4400.1398.7399.2
      61.0390.1392.3391.0391.0391.4
      7−5.5383.0382.5383.0384.1384.4
      8−10.0376.3377.0376.9375.9376.2
      9−14.5371.0370.9370.7370.3370.6
      10−19.0362.8364.6364.7364.4364.0
    • Table 3. Results of loss changes of research objects under non-fault conditions

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      Table 3. Results of loss changes of research objects under non-fault conditions

      检测点编号损耗/dB
      非故障条件下内部3根碳棒断裂条件下
      检测点10.300.35
      检测点20.100.53
      检测点30.150.94
      检测点40.120.87
      检测点50.260.49
    • Table 4. Results of defects detection

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      Table 4. Results of defects detection

      研究对象编号检测结果与实际情况是否一致
      是否产生缺陷缺陷情况
      1-一致
      2两股导线产生微裂纹一致
      3一股导线断裂一致
      4一股导线产生微裂纹一致
      5-一致
      6-一致
      7两股导线断裂一致
      8两股导线产生微裂纹,两股导线断裂两股导线产生微裂纹,一股导线断裂
      9-一致
      10两股导线产生微裂纹一致
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    Boyan JIA, Yanwei XIA, Hongliang LIU, Yabing XU, Xiaoyu YI. Detection of hidden defects of multi-strand carbon fiber composite core conductor based on optical fiber sensing technology[J]. Journal of Applied Optics, 2024, 45(2): 467

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    Paper Information

    Category: Research Articles

    Received: Mar. 3, 2023

    Accepted: --

    Published Online: May. 28, 2024

    The Author Email: JIA Boyan (chuipang7987360426@163.com)

    DOI:10.5768/JAO202445.0208004

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