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- W4386869647 abstract "The insulation performance of fasteners in the running rails is one of the important factors affecting stray current leakage. Thus, it is of great significance for realizing the detection of insulation degradation location to the safe operation of rail transit system. In this work, insulation degradation location method of rail transit system is proposed based on the central wavelength variation of fiber grating voltage sensor. In this method, the potential distribution of insulation fasteners under different insulation damage conditions was studied for unilateral power supply. Results show that voltage drop of insulation fasteners can serve as the detection parameter of insulation degradation location. Combined with the distributed monitoring requirements of rail insulation degradation, a high-resolution two-end cemented FBG sensor was proposed with optimized structure. The effects of cementation layer and fiber grating (FBG) pasting process on strain transfer and sensitivity of fiber grating voltage sensors were investigated. Finally, an experimental system for the insulation degradation location of rail transit system based on FBG voltage sensor was built for performance verification. Different insulation degradation positions were set to analyze the voltage drop distribution of insulation fasteners. Experimental results indicate that the voltage drop distribution of the insulation fasteners is obviously affected by the location of insulation degradation, and accurate determination of these locations can be achieved by identifying abrupt changes in the central wavelength variation distribution." @default.
- W4386869647 created "2023-09-20" @default.
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- W4386869647 date "2023-01-01" @default.
- W4386869647 modified "2023-10-15" @default.
- W4386869647 title "Novel Method for Insulation Degradation Location of Rail Transit System Based on Fiber Grating" @default.
- W4386869647 doi "https://doi.org/10.1109/tvt.2023.3316772" @default.
- W4386869647 hasPublicationYear "2023" @default.
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