Abstract
Polygon thermal resistant aluminum conductors fiber reinforced (PLY-TACFR) conductors are expected to have lower electrical resistance, lower wind load, and lighter weight compared to conventionally used thermal resistant aluminum conductors steel reinforced (TACSR) conductors because of the changes in shape and core material. This study investigated the mechanical properties and snow accretion and vibration characteristics of PLY-TACFR in real environments, through full-scale field observations and experiments. Based on the results, PLY-TACFR was found to have a lower linear expansion and drag coefficient compared to TACSR. PLY-TACFR have larger torsional stiffness than TACSR in small rotational angle regions, leading to less snow accretion than for TACSR. Additionally, general countermeasures for snow accretion proved to be effective for PLY-TACFR. Furthermore, the galloping amplitudes were lower than those of TACSR due to smaller sag. These results indicated that PLY-TACFR are equivalent or higher to TACSR regarding basic mechanical properties and snow accretion and vibration characteristics in winter.
