The system and optical device for remote monitoring of mechanical tension stretching in conductors of aerial networks of transmission and distribution of electric energy

摘要

The system and optical device for remote monitoring of mechanical tension stretching in conductors of aerial networks of transmission and distribution of electric energy.Said device comprising a body (14a) with ends fixed to the tower (2) and the insulator (3), having: a first FBG (15), fixed to the extremities of the body (14a)The FBG (15) through which it is calculated the mechanical tension; a second FBG (17), also attached to the body (14a) and connected in series with the FBG (15) through optical fiber (16).The FBG (17) through which it is measured the temperature of the body (14a).The system comprises at least one of the optical devices (13a) connected in series to provide a single optical line, with all the FBGs (15) and (17).Whose end is connected to a sled (18), and an OSA (19).The sled (18) emits a signal of broad spectrum s ~ 1 ~, passing through all FBGs (15) and (17).Returning the signals whose wavelengths are in line with their respective Bragg gratings.These signals, received by the OSA (19) are converted from optical to electronic and sent to a computer (21), which performs the calculation of the real mechanical stress.