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Proceedings Paper

Power cable fault management with fiber optic distributed sensors: future technological trends
Author(s): Stephane R. Teral; Marcos Kleinerman; Patrice Malavielle
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Paper Abstract

This paper presents an analysis of fiber distributed sensors applied to power cable fault management, and proposes a more suitable solution for the future. In tomorrow's fast-paced deregulated environment, exploiting new technologies for competitive advantage has become a major incentive in the power business delivery. In power lines, the main parameters that need real time checking are temperature, partial discharges, and mechanical forces. If unchecked, these parameters can seriously damage the insulation system of high-voltage power apparatus and them reduce their life expectancy. This paper deals with these three parameters and presents today's state-of-the-art. The first part analyzes the current situation by pointing out the most commonly used technique for temperature measurement: the anti Stokes Raman back-scattering method. The simple fact that the principle is based on natural or spontaneous light emission as a function of temperature make it work. However, the low signal and its slow response does not allow partial discharge considerations. The second part reviews a new more powerful technique that allows both force and temperature measurements. The principle is based on forward time division multiplexing with a two-guiding region fiber. With a view to emphasizing a specific parameter among the others, distributed temperature sensors using stimulated light amplification in rare earth-doped optical fibers are proposed. If applied, this technique would generate a more usable signal for both temperature measurement and rapid change. All in all, this paper gives a fair insight into power cable total fault management.

Paper Details

Date Published: 16 June 1998
PDF: 10 pages
Proc. SPIE 3326, Smart Structures and Materials 1998: Industrial and Commercial Applications of Smart Structures Technologies, (16 June 1998); doi: 10.1117/12.310652
Show Author Affiliations
Stephane R. Teral, Univ. of San Francisco (United States)
Marcos Kleinerman, MetriLight Inc. (United States)
Patrice Malavielle, ATI Electronique (France)

Published in SPIE Proceedings Vol. 3326:
Smart Structures and Materials 1998: Industrial and Commercial Applications of Smart Structures Technologies
Janet M. Sater, Editor(s)

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