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The harm of ice shedding of HV overhead transmission lines was analyzed. Fiber grating temperature and strain measurement system was introduced.The wavelength division multiplex sensing system was designed based on the research of fiber grating sensing principle and the characteristics of HV power line.The advantage of fiber is not only sensing material,but also transmission material,the monitoring...
Brllouin optical time domain reflectometry is one of the popular methods of Brillouin distributed fiber sensing measurement. The spatial resolution of BOTDR system could reach meter order. For many applications, the temperature distribution of object is not a constant in the spatial resolution, and temperature gradient exists inside the scope. The relationship between Brillouin backscattering spectrum...
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