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Proceedings Paper

Fibre optic monitoring system for the determination of segment joint movements inside a hydro power dam
Author(s): Helmut Woschitz; Ferdinand Klug; Werner Lienhart
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Paper Abstract

In recent years hydro power stations were rebuilt to more efficient pumped storage power stations. This changed the loading conditions and new monitoring concepts are required. We developed a FBG based automatic monitoring system for the simultaneous measurement of concrete segment joints. With a fibre optic testing facility sensor nonlinearity and hysteresis effects were investigated. Using selected sensors the requested accuracy of 0.02 mm for deformations up to 3 mm can be achieved. Several sensors were installed in a hydro power dam. First results show an increased number of load cycles and smaller movements for the dam in pumping mode.

Paper Details

Date Published: 2 June 2014
PDF: 4 pages
Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91579N (2 June 2014); doi: 10.1117/12.2059682
Show Author Affiliations
Helmut Woschitz, Technische Univ. Graz (Austria)
Ferdinand Klug, Technische Univ. Graz (Austria)
Werner Lienhart, Technische Univ. Graz (Austria)

Published in SPIE Proceedings Vol. 9157:
23rd International Conference on Optical Fibre Sensors
José M. López-Higuera; Julian D. C. Jones; Manuel López-Amo; José Luis Santos, Editor(s)

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