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Simultaneous distributed temperature and disturbance sensing in single-mode fibre for power cable monitoring
Author(s): Simon T. Sørensen; Andy Shanks; Elaine Buck; Henry T. Bookey
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Paper Abstract

A dual modality fibre sensing system for simultaneous monitoring of temperature and acoustic disturbances in power cables is demonstrated. The system combines Raman OTDR (Optical Time-Domain Reflectometry) and Rayleigh phase- OTDR and is based on a single shared laser source. The performance of the system is demonstrated with absolute temperature measurements in heated fibre sections and detection of echoes from disturbance events. To the best of our knowledge, this is the first single-source simultaneous temperature and disturbance sensing in single-mode fibre. Finally, it is demonstrated that localised temperature variations and acoustic disturbances, such as cable strumming and strike, can be detected in an onshore 30 kV power cable.

Paper Details

Date Published: 14 May 2018
PDF: 9 pages
Proc. SPIE 10654, Fiber Optic Sensors and Applications XV, 106540Y (14 May 2018); doi: 10.1117/12.2304379
Show Author Affiliations
Simon T. Sørensen, Fraunhofer Ctr. for Applied Photonics (United Kingdom)
Andy Shanks, European Marine Energy Ctr. (United Kingdom)
Elaine Buck, European Marine Energy Ctr. (United Kingdom)
Henry T. Bookey, Fraunhofer Ctr. for Applied Photonics (United Kingdom)


Published in SPIE Proceedings Vol. 10654:
Fiber Optic Sensors and Applications XV
Alexis Mendez; Christopher S. Baldwin; Henry H. Du, Editor(s)

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