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Symmetric 14-Pole as Element of Electrical Energy Transmission

The electric power transmission on double-circuit transmission lines requires the necessary calculation of modes for competent operator management. The calculation of the modes for double-circuit power lines is easier to run from the point of view of a line as a single symmetric 14-pole. A symmetric 14-pole takes into account the electromagnetic connections between wires and between wires and grounded structures of a power line. From the engineering point of view, a 14-pole can be represented not only as a replacement of double- circuit transmission lines but also as a replacement of any electrical device.