With the rapid development of the power grid industry, the insulation grade of power cables is also constantly improving. It is a common phenomenon that the transmission capacity of large section cables exceeds 1ka. In cable route engineering, many of them adopt traditional steel structure cable trays, but the cable supports are still subject to rust and corrosion in the harsh environment of perennial ponding and wet cable trenches and cable wells, although the supports are galvanized. It affects the safety of cable support.
In addition, with the increase of cable capacity, under the action of high current, the magnetic field vortex generated by the fair electromagnetic field on the traditional steel structure support can not be ignored, mainly the cable steel structure support. Under the long-term heating effect, the service life and transmission capacity of the cable sheath also have a certain impact. Therefore, the research and development of FRP cable supports that have been able to resist corrosion, rust and geological swirl loss has been paid more and more attention.
