The HVDC Itaipu is a bipolar plant for the high voltage direct current transmission from the power station Itaipu toward São Paulo. The HVDC Itaipu consists of two bipolar lines, which run from the static inverter plant at Foz do Iguaçu in Paraguay to the static inverter plant São Rogue near São Paulo. These lines were inaugaurated in several steps between 1984 and 1987. Both lines are operated with a voltage of 600kV and are implemented throughout as overhead lines with a length of 785 and 805 kilometers. Beside the large conduit length also still the circumstance that the generators on the Paraguayan side of the power station Itaipu three-phase alternating current of 50 cycles per second supply, was determining during Brazil as frequency 60 cycles per second used for the application of the HVDC.
