Common phase sequence common-tower common-window dual loop transmission line

The invention relates to a double-circuit transmission line with same phase sequence in the same tower window, which belongs to the technical field of high, ultra-high and extra-high voltage overhead line electric power transmission. The A-phase wire, the B-phase wire and the C-phase wire of a first circuit transmission line of the transmission line are longitudinally arranged at one side of a supporting frame.. The A-phase wire, the B-phase wire and the C-phase wire of a second circuit transmission line are longitudinally arranged at the other side of the supporting frame, and the transversetwo-phase wires are positioned in the same phase position. The A-phase wire, the B-phase wire and the C-phase wire of the first circuit transmission line and the A-phase wire, the B-phase wire and the C-phase wire of the second circuit transmission line are relatively fixed with the supporting frame through supporting rods. In the transmission line, the distance between each phase wire is smaller, thereby the natural powe