The HVDC Itaipu is a HVDC transmission line from the Itaipuhydroelectric power plant to the city of São Roque - SP, Brazil. The project has two bipolar lines, which run from the converter plant at Foz do Iguaçu in Paraná to the static inverter plant São Roque near São Paulo. These lines were put in service in several steps between 1984 and 1987. Both lines operate at ±600kV and are built as overhead lines with a length of 785 and 805 kilometers. HVDC was chosen both because of the long transmission lines and also to allow interchange of power between the 50 Hz units on the Paraguayan side of the station and the 60 Hz grid in Brazil. HVDC or high-voltage, direct current electric power transmission systems contrast with the more common alternating-current systems as a means for the bulk transmission of electrical power. ... Itaipu (Guarani: Itaipu, Portuguese: Itaipu, Spanish: ItaipÃº; pronounced ) is a hydroelectric dam on the ParanÃ¡ River located on the border between Brazil and Paraguay. ... Hydroelectric dam diagram The waters of Llyn Stwlan, the upper reservoir of the Ffestiniog Pumped-Storage Scheme in north Wales, can just be glimpsed on the right. ... Foz do IguaÃ§u is the 6th largest city of ParanÃ¡ state and the 12nd largest of the Brazils Southern region, with a population of 270,000 habitants (including the nearby community of Santa Terezinha do IguaÃ§u). ... Flag of ParanÃ¡ See other Brazilian States Capital Curitiba Largest City Curitiba Area 199,544 kmÂ² Population - Total - Density 9,150,000 48 inh. ... A static inverter station is the terminal equipment for a high voltage direct current transmission line, in which direct current is converted to three-phase alternating current, and, usually, the reverse. ... The title of this article contains the character Ã£. Where it is unavailable or not desired, the name may be represented as Sao Roque. ... 1984 (MCMLXXXIV) was a leap year starting on Sunday of the Gregorian calendar. ... 1987 (MCMLXXXVII) was a common year starting on Thursday of the Gregorian calendar. ...
HVDC or high-voltage, direct current electric power transmission systems contrast with the more common alternating-current systems as a means for the bulk transmission of electrical power.
HVDC can carry more power per conductor, because for a given power rating the constant voltage in a DC line is lower than the peak voltage in an AC line.
Because HVDC allows power transmission between unsynchronised AC distribution systems, it can help increase system stability, by preventing cascading failures from propagating from one part of a wider power transmission grid to another, whilst still allowing power to be imported or exported in the event of smaller failures.
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