000145691 001__ 145691
000145691 005__ 20241122130823.0
000145691 0247_ $$2doi$$a10.3390/s24227388
000145691 0248_ $$2sideral$$a140672
000145691 037__ $$aART-2024-140672
000145691 041__ $$aeng
000145691 100__ $$0(orcid)0000-0002-0310-3203$$aCanudo, Jorge$$uUniversidad de Zaragoza
000145691 245__ $$aSimultaneous Structural Monitoring over Optical Ground Wire and Optical Phase Conductor via Chirped-Pulse Phase-Sensitive Optical Time-Domain Reflectometry
000145691 260__ $$c2024
000145691 5060_ $$aAccess copy available to the general public$$fUnrestricted
000145691 5203_ $$aOptimizing the use of existing high-voltage transmission lines demands real-time condition monitoring to ensure structural integrity and continuous service. Operating these lines at the current capacity is limited by safety margins based on worst-case weather scenarios, as exceeding these margins risks bringing conductors dangerously close to the ground. The integration of optical fibers within modern transmission lines enables the use of Distributed Fiber Optic Sensing (DFOS) technology, with Chirped-Pulse Phase-Sensitive Optical Time-Domain Reflectometry (CP-ΦOTDR) proving especially effective for this purpose. CP-ΦOTDR measures wind-induced vibrations along the conductor, allowing for an analysis of frequency-domain vibration modes that correlate with conductor length and sag across spans. This monitoring system, capable of covering distances up to 40 km from a single endpoint, enables dynamic capacity adjustments for optimized line efficiency. Beyond sag monitoring, CP-ΦOTDR provides robust detection of external threats, including environmental interference and mechanical intrusions, which could compromise cable stability. By simultaneously monitoring the Optical Phase Conductor (OPPC) and Optical Ground Wire (OPGW), this study offers the first comprehensive, real-time evaluation of both structural integrity and potential external aggressions on overhead transmission lines. The findings demonstrate that high-frequency data offer valuable insights for classifying mechanical intrusions and environmental interferences based on spectral content, while low-frequency data reveal the diurnal temperature-induced sag evolution, with distinct amplitude responses for each cable. These results affirm CP-ΦOTDR’s unique capacity to enhance line safety, operational efficiency, and proactive maintenance by delivering precise, real-time assessments of both structural integrity and external threats.
000145691 536__ $$9info:eu-repo/grantAgreement/ES/DGA-FSE/T20-23R$$9info:eu-repo/grantAgreement/ES/MINECO/DI-17-09169
000145691 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000145691 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000145691 700__ $$0(orcid)0000-0002-4094-3826$$aSevillano, Pascual$$uUniversidad de Zaragoza
000145691 700__ $$aIranzo, Andrea
000145691 700__ $$aKwik, Sacha
000145691 700__ $$0(orcid)0000-0001-5898-8777$$aPreciado-Garbayo, Javier
000145691 700__ $$0(orcid)0000-0002-2244-170X$$aSubías, Jesús$$uUniversidad de Zaragoza
000145691 7102_ $$12002$$2385$$aUniversidad de Zaragoza$$bDpto. Física Aplicada$$cÁrea Física Aplicada
000145691 7102_ $$12002$$2647$$aUniversidad de Zaragoza$$bDpto. Física Aplicada$$cÁrea Óptica
000145691 773__ $$g24, 22 (2024), 7388 [11 pp.]$$pSensors$$tSensors$$x1424-8220
000145691 8564_ $$s6751950$$uhttps://zaguan.unizar.es/record/145691/files/texto_completo.pdf$$yVersión publicada
000145691 8564_ $$s2697503$$uhttps://zaguan.unizar.es/record/145691/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000145691 909CO $$ooai:zaguan.unizar.es:145691$$particulos$$pdriver
000145691 951__ $$a2024-11-22-11:52:42
000145691 980__ $$aARTICLE