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Sensors 2018, 18(2), 365; doi:10.3390/s18020365

A Fiber Bragg Grating-Based Dynamic Tension Detection System for Overhead Transmission Line Galloping

State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China
Henan Electric Power Research Institute, State Grid, Zhengzhou 450000, China
Author to whom correspondence should be addressed.
Received: 12 December 2017 / Revised: 20 January 2018 / Accepted: 25 January 2018 / Published: 26 January 2018
(This article belongs to the Special Issue Sensors for Deformation Monitoring of Large Civil Infrastructures)
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Galloping of overhead transmission lines (OHTLs) may induce conductor breakage and tower collapse, and there is no effective method for long distance distribution on-line galloping monitoring. To overcome the drawbacks of the conventional galloping monitoring systems, such as sensitivity to electromagnetic interference, the need for onsite power, and short lifetimes, a novel optical remote passive measuring system is proposed in the paper. Firstly, to solve the hysteresis and eccentric load problem in tension sensing, and to extent the dynamic response range, an ‘S’ type elastic element structure with flanges was proposed. Then, a tension experiment was carried out to demonstrate the dynamic response characteristics. Moreover, the designed tension sensor was stretched continuously for 30 min to observe its long time stability. Last but not the least, the sensor was mounted on a 70 m conductor model, and the conductor was oscillated at different frequencies to investigate the dynamic performance of the sensor. The experimental results demonstrate the sensor is suitable for the OHTL galloping detection. Compared with the conventional sensors for OHTL monitoring, the system has many advantages, such as easy installation, no flashover risk, distribution monitoring, better bandwidth, improved accuracy and higher reliability. View Full-Text
Keywords: optical fiber sensors; tension; remote sensing; galloping measurement; overhead transmission lines optical fiber sensors; tension; remote sensing; galloping measurement; overhead transmission lines

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Ma, G.-M.; Li, Y.-B.; Mao, N.-Q.; Shi, C.; Li, C.-R.; Zhang, B. A Fiber Bragg Grating-Based Dynamic Tension Detection System for Overhead Transmission Line Galloping. Sensors 2018, 18, 365.

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