Abstract
A distributed on-line temperature and strain fiber sensing system based
on the combined Brillouin optical time domain reflectometry (BOTDR) and fiber
Bragg grating (FBG) technology is presented and investigated experimentally
for monitoring the overhead transmission lines. The BOTDR sensing system can
be used to measure the temperature of transmission lines (Optical Phase Conductor,
OPPC or Optical Power Ground Wire, OPGW) which is helpful for monitoring the
dynamic ampacity and icing forecasting. In order to effectively monitor the
distortion of transmission line induced by the climatic fluctuation and natural
disaster, e.g., ice coating and hurricane wind, a quasi-distributed FBG strain
sensing system is connected in series with the insulator, integrated into
the BOTDR system. The results showed the proposed system was effective and
reliable for the monitoring of overhead transmission lines.
© 2013 IEEE
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