We demonstrate the capability of using fiber-optic sensors for measurements on environmental loads on a high-power, overhead transmission line. A trial system with three Bragg gratings, including a temperature reference, was installed on a 160-m span of a 60-kV line. An interrogation system with a tunable distributed Bragg reflector laser source was used. Several measurements of the induced loads on a conductor were recorded in various wind conditions. In particular, aeolian vibrations were frequently observed, and several measurements of this phenomenon were made. The results correlate well with simple theoretical predictions and visual observations.
© 2000 Optical Society of America
(010.3920) Atmospheric and oceanic optics : Meteorology
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.7280) Instrumentation, measurement, and metrology : Vibration analysis
Leif Bjerkan, "Application of Fiber-Optic Bragg Grating Sensors in Monitoring Environmental Loads of Overhead Power Transmission Lines," Appl. Opt. 39, 554-560 (2000)