Distributed Transmission Line Sag monitoring apparatus and method

The present invention relates to an apparatus for monitoring a distributed transmission line sag conductor, which includes a computer and an information processing unit provided OPGW, OPGW in a sensing fiber transmission line as a distribution optical fiber sensor, comprising a Brillouin optical time-domain reflectometer, the temperature sensor point is provided on a power transmission line conductor, the distributed fiber optic sensor connected to a first communication terminal Brillouin optical time-domain reflectometer Brillouin a first optical data communication terminal when the second communication terminal domain reflectometer connected to a computer and an information processing unit, the signal output of the point temperature sensor connected to a computer and an information processing unit, the second data communication terminal. High intelligence invention facilitates computer to automatically calculate, display real-time distributed transmission line conductor sag has important economic and social value.