PROJECT TITLE :
Effects of the structure and insulation material of a cable on the ability of a location method by FDR
The authors have demonstrated that the estimation of the precise locations of points in cables aged thermally or mechanically or by the irradiation of gamma rays is attainable by a mix of frequency domain reflectometry and inverse fast Fourier rework. This paper examines how this ability of fault location depends on the sort, structure, and insulation material of the cable, using several kinds of polymer insulated cables like a triple core cable insulated with flame-retardant ethylene propylene diene copolymer, a dual core cable insulated with silicone rubber, a dual core cable insulated with crosslinked polyolefin (XLPO), a coaxial cylindrical cable insulated with low density polyethylene, and a flat twine insulated by polyvinyl chloride (PVC). As a result, for cables with lengths from sixteen to seventy two m, the maximum sensitivity is attained when the highest frequency of the inputted electromagnetic waves is one.zero GHz or higher for coaxial cables, but around 300 to 800 MHz for dual or triple core cables. For the placement attempt of the position heated by a heater, cables insulated with PVC offer higher signal intensities than those insulated with XLPO.
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