Overhead line into the ground

The overhead line refers to the overhead open line set up on the ground, which is the electric power line set up on the pole tower with insulators and power fittings. It is made up of wire and ground wire (overhead ground wire), tower, insulator, hardware, and other components of the tower foundation, anchor and grounding device, the wire is made from good conductive metal, there is enough thick section (to maintain the proper flow density) and large radius of curvature (to minimize corona discharge) and ultra-high voltage transmission is certainly use split conductor; The insulator string is composed of a single suspension (or bar) insulator string, which should meet the requirements of insulation strength and mechanical strength, and the number of insulators in each string is determined by the transmission voltage level. Poles and towers, mostly made of steel or reinforced concrete, are the main support structures for overhead transmission lines…