Yuelin Zhu, Guichi Zhu, Ning Wang, Xiao Wang, Xinfei Luo, Shi Xu, Zhuojun Xiao, Shaopeng Li, Hongqiao Wen. Settlement Monitoring of Ultra-Long GIS in Substations Based on Weak Fiber Bragg Grating Array[J]. Laser & Optoelectronics Progress, 2025, 62(1): 0128001
- Laser & Optoelectronics Progress
- Vol. 62, Issue 1, 0128001 (2025)
Fig. 1. Diagram of settlement monitoring system based on weak fiber grating technology
Fig. 2. Settlement fitting diagrams of WFBG static levels. (a) Settlement fitting diagram of No. 1 WFBG static level; (b) settlement fitting diagram of No. 2 WFBG static level
Fig. 3. Temperature and strain characteristic curves of strain sensing optical cables. (a) Temperature characteristic curve; (b) strain characteristic curve
Fig. 4. Relationship between mean response and load and fitting curves of embedded optical cable forward and reverse stroke. (a) Relationship between wavelength and load; (b) fitted curve
Fig. 5. WFBG static level and strain sensing optical cable layout diagram
Fig. 6. Settlement of GIS pipeline support piers
Fig. 7. Transverse surface displacement
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Table 1. Settlement measured value, theoretical value, and error of two WFBG static levels
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