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提出了一种基于光纤Bragg光栅(FBG)传感器的架空输电线路覆冰厚度监测方案,并进行了仿真分析和实验验证。利用覆冰后输电线路的形变牵引FBG应变传感器,综合考虑FBG的应变量、实时气候条件等多种因素,得出输电线路的覆冰厚度。实验结果表明,方案能监测到30 mm覆冰厚度,测量精度和灵敏度达到1 mm覆冰厚度,有效监测距离可达40 km。仿真分析及实验测试结果一致,表明方案可有效测量长距离输电线路的覆冰厚度。
A monitoring scheme for icing thickness of overhead transmission line based on fiber Bragg grating (FBG) sensor was proposed, and the simulation analysis and experimental verification were carried out. After the icing of the transmission line deformation traction traction FBG strain sensor, taking into account the strain of the FBG, real-time climate conditions and other factors, draw the thickness of transmission line icing. The experimental results show that the scheme can detect ice thickness of 30 mm, the measurement accuracy and sensitivity reach 1 mm ice thickness, and the effective monitoring distance can reach 40 km. The results of simulation and experiment are consistent, which shows that the scheme can effectively measure the ice thickness of long distance transmission line.