DEVELOPMENT OF A METHOD FOR MEASURING TEMPERATURE IN THE LONGITUDINAL PROFILE OF A CABLE LINE USING BUILT-IN FIBER-OPTICAL LINES
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Abstract
the paper proposes a method for measuring temperature in the longitudinal profile of a cable line using built-in fiber optic lines in cable lines under operating voltage and load, which makes it possible to prevent the development of an emergency defect and to control the temperature and distance to the place of heating of the controlled section with high accuracy in real time. In the work on the proposed method, an algorithm for testing was developed.
Subject: the dependence of the parameters of the optical fiber embedded in the cable, arising under the influence of temperature changes, for each specific section or throughout the controlled section of the cable line.
Materials and methods: In the work, for the first time, studies were carried out on the dependence of the parameters of the fiber-optic line of the cable integrated into the cable line, as well as the local temperature change in the section of the cable line, by calculations using the time difference between the moment of receipt of the reflected pulse and the moment of emission of the laser pulse into the optical fiber.
Results: an algorithm was developed, as well as a mathematical analysis was carried out, confirming the receipt of the resulting combinatorial scattering data, for the subsequent output of temperature parameters using an optical fiber integrated into the cable line. Temperature control is determined by optical scattering in the reflected signals.
Conclusions: temperature control by optical scattering in reflected signals is applicable to measuring the temperature regime in the cable line profile, which in turn will allow optimizing the load of the cable line, rationally taking into account real climatic conditions and local features of the laying of all sections of the cable line, as well as detecting defects prematurely.
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References
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