On Line temperature measurement system in the laying of high-voltage power-line conductors by topographic surveying

Abstract

In the laying of high voltage power lines,

special cases exist where there is a large

gap between the supports, which must be

controlled by surveying methods during the

installation process. The control involves

the calculation of the angle corresponding

to the arrow on the conductor at a given

temperature. As there may be signifi cant

variations in temperature between the

ground and the conductor (in its fi nal

location), it is necessary controlling this

variation. It has been developed a system

for measuring the temperature of the

conductor ends at the time of installation.

This information is transmitted to a computer

through an application developed in Matlab.

This one automatically calculates the

average temperature of the conductor, and,

at the same time, it calculates the angle that

should be the lowest point of the conductor

in time to be fi xed. On the other hand, the

developed application also allows verifying

by surveying methods whether the sag of

a fi xed conductor complies with current

regulations: it is possible doing it in situ,

without having to be under the power line