▎ 摘　　要

NOVELTY - A power grid transmission line comprises carbon fiber composite core comprising carbon fiber center layer, aramid fiber coated on the center layer of carbon fiber and epoxy resin layer containing modified graphene, and at least one conductive outer layer surrounded by four or more conductive metal wire having tile-shaped cross-section. The modified graphene uses polyurethane for surface modification. USE - Power grid transmission line. ADVANTAGE - The power grid transmission line has prolonged service life, and uses carbon fiber composite core which has improved toughness, reduced rigidity and improved curling performance.