Abstract
As the demand for power grid communication increases, the number of fiber optic cable cores erected on transmission line has also increased accordingly. Conventional tower with double ground wires cannot meet the requirements for carrying capacity. Using SmartTower software to establish the stress calculation model of double-circuit transmission line towers, calculating the influence of the four ground wires erection scheme of the double-split ground wires and the added ground wire hanging points on the mechanical properties of the tower structure for OPGW cables with different core counts, and calculating the tower weight and foundation force. The results show that when 48-core optical cable is selected, the tower weight increase caused by increasing unit communication capacity is smaller. The tangent tower adopts double split ground wire, and the tension tower adopts the scheme of increasing ground wire hanging point, resulting in less stress change of the tower and less weight increase of the tower.
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