Title :
High-Voltage Lines in Fire Environment
Author :
Anagnostatos, Stavros D. ; Halevidis, Constantinos D. ; Polykrati, Aikaterini D. ; Koufakis, Emmanuel I. ; Bourkas, Perikles D.
Author_Institution :
Sch. of Electr. & Comput. Eng., Nat. Tech. Univ. of Athens, Athens, Greece
fDate :
7/1/2011 12:00:00 AM
Abstract :
This letter concerns the change in bending which can manifest in a high-voltage line, when it lies in a fire environment. It is shown that in the case where aluminum conductors steel-reinforced conductors attain a temperature of more than 500°C, a drastic fall of the steel core mechanical strength occurs, resulting in permanent elongation of the line which drastically decreases the clearance from the underlying vegetation.
Keywords :
aluminium; bending; elongation; mechanical strength; overhead line conductors; overhead line mechanical characteristics; steel; aluminum conductors; bending; fire environment; high-voltage lines; permanent elongation; steel core mechanical strength; steel-reinforced conductors; Conductors; Mathematical model; Poles and towers; Steel; Thermal conductivity; Thermal stresses; Vegetation; Conductor elongation in fire environment; transmission lines;
Journal_Title :
Power Delivery, IEEE Transactions on
DOI :
10.1109/TPWRD.2011.2123471
