Ralco dam
| Ralco dam | |||
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| Coordinates | 37 ° 59 ′ 45 ″ S , 71 ° 31 ′ 0 ″ W | ||
| Data on the structure | |||
| Construction time: | 1998-2002 | ||
| Height of the barrier structure : | 155 m | ||
| Building volume: | 1.55 (or 1.637) million m³ | ||
| Crown length: | 360 m | ||
| Power plant output: | 690 MW | ||
| Data on the reservoir | |||
| Water surface | 34 km² | ||
| Storage space | 1.222 billion m³ | ||
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The Ralco dam is the second dam on the Río Bío Bío in Chile after the Pangue dam . It was built from 1998 to 2002 southeast of Los Ángeles (Chile) in the Región del Bío-Bío . It is owned by Empresa Nacional de Electricidad SA Chile (ENDESA) and is also operated by ENDESA.
Barrier structure
The dam was made of roll-compacted concrete (RCC) as a weight dam and is 155 m high. Construction costs were $ 568 million.
Reservoir
The reservoir was flooded from April 22, 2004. It is 34 square kilometers and holds 1.222 billion cubic meters of water.
power plant
With an installed capacity of 690 MW, the Ralco power plant is the largest hydropower plant in Chile (as of April 2015). The average annual generation is 1.918 billion kWh .
The 2 machines of the power plant were put into operation in September 2004. You are in an underground machine house. The Francis turbines and the generators were supplied by Alstom . The turbines have an output of 300 or 390 MW. The generators have a nominal voltage of 13.8 kV . In the switchgear , the generator voltage is increased from 13.8 kV to 230 kV using power transformers.
The maximum height of fall is 200 m. The maximum flow is a total of 450 m³ / s.
Resistance to the project
The dam was built against considerable resistance from the local Indian population. For the flooding of the reservoir, members of the indigenous peoples of the Mapuche and Pehuenchen had to be resettled from their settlement areas.
In 2000, the activists Berta and Nicolasa Quintréman Calpán were awarded the Petra Kelly Prize by the Heinrich Böll Foundation for their work against the dam .
literature
Stephen H. Daniels: Two Jobs Not for the Faint of Heart, in: Engineering News Record, August 19, 2002
See also
- List of the largest dams on earth
- List of the largest reservoirs on earth
- List of the largest hydroelectric plants in the world
- List of power plants in Chile
- List of dams in the world (Chile)
Web links
- Ralco dam. In: Structurae
- Ralco Dam - Photos from the construction ( Memento from September 15, 2008 in the Internet Archive )
- Central Ralco - photos of the finished system
- Satellite image of the construction site to the right of the Pangue reservoir
- Chile Indians Block Hydro-Electric Dam Project
Individual evidence
- ↑ a b c d Ralco Plant (Chile). (No longer available online.) Empresa Nacional de Electricidad SA, archived from the original on April 15, 2015 ; accessed on April 15, 2015 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ a b Ralco Hydroelectric Power Plant Chile. Global Energy Observatory, accessed April 15, 2015 .
- ↑ Heinrich Böll Foundation: Prize winners 2000: Berta and Nicolasa Quintreman Calpán (Chile) Retrieved on February 25, 2015.
