El Nihuil dam

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El Nihuil dam
30.Dique Nihuil.jpg
location
El Nihuil dam (Argentina)
El Nihuil dam
Coordinates 35 ° 1 '38 "  S , 68 ° 40' 43"  W Coordinates: 35 ° 1 '38 "  S , 68 ° 40' 43"  W
country ArgentinaArgentina Argentina
place Mendoza Province
Waters Río Atuel
Height upstream 1251  m
power plant
owner Provincia de Mendoza
operator Hidroeléctrica Nihuiles SA
construction time 1949 to 1956
Start of operation 1956
technology
Bottleneck performance 74.24 megawatts
Average
height of fall 		183.5 m
Expansion flow 52 m³ / s
Turbines Francis turbines : 4 × 18.56 MW
Others

The El Nihuil dam ( Spanish Represa El Nihuil or Dique El Nihuil ) is a dam with a hydropower plant in the province of Mendoza , Argentina . It dams the Río Atuel to a reservoir. The dam and the associated power plant Nihuil I (span. Central hidroeléctrica Nihuil I or Central hidroeléctrica Ing.Juan Eugenio Maggi ) are also known as the Nihuil I hydroelectric power plant complex (span. Complejo hidroeléctrico Nihuil I ).

The dam is used for power generation and irrigation. Construction began in 1942. It was completed in 1947. The dam and the hydroelectric power station are state-owned ( Provincia de Mendoza ). The concession for the operation was transferred to Hidroeléctrica Nihuiles SA on June 1, 1994.

Barrier structure

The barrier structure is a concrete gravity dam with a height of 25 m above the river bed . The top of the wall is at a height of 1254 m above sea level . The length of the wall crown is 315 (or 465) m, its width at the crown 4 m. The volume of the barrier structure is 65,000 m³. The dam wall has both a flood relief and a bottom outlet . A maximum of 549 (or 600) m³ / s can be discharged via the flood relief.

Reservoir

The normal destination is between 1248 and 1251 m. With a storage target of 1251 m, the reservoir extends over an area of ​​around 75 (or 108.51) km² and holds 236 (or 259, 260 or 387) million m³ of water. The maximum storage destination is 1252.5 m, the minimum 1232.8 m.

power plant

The Nihuil I power plant was built from 1949 to 1956. The power plant's machine house is located about 6 km downstream of the dam on the left bank of the river. The installed capacity is 74.24  MW . The average annual generation is given as 296 (or 365) million  kWh . The annual production fluctuates: in 2000 it was 320 million kWh and in 2006 it was 496 million kWh.

The 4 Francis turbines each have a maximum output of 18.56 MW and the associated generators each 23.2 MVA . The nominal speed of the turbines is 600 min −1 . The fall height is between 147 and 189 m. The flow rate is 13 m³ / s (maximum 14, minimum 9 m³ / s) per turbine.

Others

The operator Hidroeléctrica Nihuiles SA is 52.04% owned by Pampa Energía .

See also

Web links

Commons : El Nihuil Dam  - Collection of images, videos and audio files

Individual evidence

  1. ↑ Ingeniero Juan Eugenio Maggi. www.indargen.com.ar, accessed June 3, 2019 (Spanish).
  2. ↑ a b c d e f Inventario de Presas y Centrales Hidroeléctricas de la República Argentina 2. (PDF) Ministerio de Planificación Federal, Inversión Pública y Servicios, January 1, 2011, pp. 147-167 , accessed on June 3, 2019 ( Spanish).
  3. ↑ Hidroeléctrica Los Nihuiles ( "HINISA"). Pampa Energía , accessed June 3, 2019 (Spanish).
  4. ↑ a b c d e f MATRIZ ENERGETICA INTEGRAL DE LA PROVINCIA DE MENDOZA. (PDF) web.archive.org, April 1, 2007, pp. 20–21 , accessed on June 13, 2019 (Spanish).
  5. ↑ a b El Nihuil. Organismo Regulador de Seguridad de Presas (ORSEP), accessed June 3, 2019 (Spanish).
  6. ↑ a b Ejercicio 1999 Informe anual. (PDF) ORSEP, pp. 54–55 , accessed on June 5, 2019 (Spanish).
  7. ^ Nihuil I Hydroelectric Power Plant Argentina. Global Energy Observatory, accessed June 3, 2019 .
  8. ^ Estructura de la Compañía. Pampa Energía, accessed June 3, 2019 (Spanish).