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Acaray
''For the hydroelectric power plant and HVDC-back-to-back facility in Paraguay, see Acaray Power Plant'' Acaray, also known as the Fortress of Acaray, is an archaeological site located in the Huaura River Valley on the near north coast of Peru (or the Norte Chico region). The impressive fortress is located on a series of three hilltops, each ringed with a number of perimeter defensive walls that have parapets and bastions, which stand as testaments to the military nature of the site. Radio carbon dating has established it was built about 900–200 BC and abandoned 1000–1470AD. Surrounding the hilltop fortress are lower-lying areas of occupation and extensive cemeteries, which have been heavily looted. History of research Attention was called to the site early on by the German archaeologist Hans Horkheimer, who wrote about Acaray in 1962 in the Peruvian magazine, ''Caretas'', published in Lima. Calling it the ''Fortaleza de Huaura'' (the Fortress of Huaura), he deemed A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acaray Power Plant
The Acaray Dam is a hydroelectric dam situated in Hernandarias, Paraguay. It has an electrical output of , supplying 3% of Paraguay's electricity demand. HVDC-back-to-back station The power plant's switchyard has a HVDC back-to-back station built by Siemens in 1981. It has a power rating of and an operating voltage of . It converts the electrical frequency from 50 hertz to 60 hertz to supply electricity to Brazil's power grid, which operates at 60 Hz (Paraguay's power grid operates at a frequency of 50 hertz). Culture It is depicted in the 50 guaranies coin in Paraguay. See also * List of power stations in Paraguay Electricity in Paraguay comes almost entirely from hydropower. As Paraguay is landlocked and has no significant natural gas reserves, its citizens often burn firewood which contributes to deforestation. The government imports fuel to use, and state- ... Notes {{reflist Energy infrastructure completed in 1981 Hydroelectric power stations in Pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |