130017 20260217205451.0 doi 10.1109/JSEN.2023.3340296 sideral 136326 ART-2024-136326 eng Canudo, Jorge Universidad de Zaragoza (orcid)0000-0002-0310-3203 Overhead transmission line sag monitoring using a chirped-pulse phase-sensitive OTDR 2024 Access copy available to the general public Unrestricted The capacity of overhead transmission lines is fixed and determined by the physical properties of the line, which are estimated based on worst-case weather scenarios. Exceeding the capacity limit can cause the conductor to increase the sag excessively, bringing it too close to the ground and creating a safety risk. Real-time monitoring of the sag value enables dynamic capacity configuration, thereby reducing safety risks and improving the efficiency of the transmission line. Distributed acoustic sensing based on chirped-pulse phase-sensitive optical time-domain reflectometry (CP- Φ OTDR) can be used to measure the vibration induced by wind on the cable line taking advantage of the optical fiber already deployed in the power line. An analysis of the recovered strain in the frequency domain reveals multiple frequency components related to the cable’s current mechanical state. By identifying the fundamental frequency, it becomes possible to quantitatively calculate the sag. Tracking the central frequency of each span allows for the monitoring of the sag for each span of the line using just one single-end interrogator. info:eu-repo/grantAgreement/ES/DGA-FSE/T20-23R info:eu-repo/grantAgreement/ES/MINECO/DI-17-09169 info:eu-repo/semantics/openAccess by https://creativecommons.org/licenses/by/4.0/deed.es 4.5 2024 INSTRUMENTS & INSTRUMENTATION 16 / 79 = 0.203 2024 Q1 T1 PHYSICS, APPLIED 53 / 187 = 0.283 2024 Q2 T1 ENGINEERING, ELECTRICAL & ELECTRONIC 99 / 368 = 0.269 2024 Q2 T1 1.039 2024 Instrumentation 2024 Q1 Electrical and Electronic Engineering 2024 Q1 8.2 2024 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Sevillano, Pascual Universidad de Zaragoza (orcid)0000-0002-4094-3826 Iranzo, Andrea Kwik, Sacha Preciado-Garbayo, Javier Subías, Jesús Universidad de Zaragoza (orcid)0000-0002-2244-170X 2002 385 Universidad de Zaragoza Dpto. Física Aplicada Área Física Aplicada 2002 647 Universidad de Zaragoza Dpto. Física Aplicada Área Óptica 24, 2 (2024), 1988-1995 IEEE sens. j. IEEE SENSORS JOURNAL 1530-437X 3412252 http://zaguan.unizar.es/record/130017/files/texto_completo.pdf Versión publicada 3318593 http://zaguan.unizar.es/record/130017/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:130017 articulos driver 2026-02-17-20:19:09 ARTICLE