FBG Smart Bolts and Their Application in Power Grids

Based on the analysis and research of the existing intelligent bolt technology, this article proposes a smart bolt based on fiber Bragg grating sensing technology. The bolt design process was systematically introduced, and the physical model of the three-point fixed anti-tail fiber sloshing was given, as well as the corresponding simulation and experimental comparison. The ability to monitor the looseness of the smart bolts was also tested and installed as a smart unit in the fiber-optic smart grid system for monitoring and testing. The wire dancing simulation test machine was used to simulate various practical application conditions, and the effective monitoring performance of the intelligent bolt was verified.

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