Pehuenche dam
| Pehuenche dam | ||
|---|---|---|
| location | ||
|
||
| Coordinates | 35 ° 45 '33 " S , 71 ° 5' 18" W | |
| country |
 Chile
|
|
| place | Region VII | |
| Waters | Melado | |
| power plant | ||
| owner | Empresa Eléctrica Pehuenche SA (EEP) | |
| operator | EEP | |
| Start of operation | 1991 | |
| technology | ||
| Bottleneck performance | 570 megawatts | |
| Average height of fall |
206 m | |
| Expansion flow | 300 m³ / s | |
| Standard work capacity | 2476.5 to 3548.5 million kWh / year | |
| Turbines | 2 Francis turbines 1 × 280 MW 1 × 290 MW |
|
| Others | ||
The Pehuenche dam or the Pehuenche power plant ( Spanish Central [hidroeléctrica] Pehuenche ) is a hydroelectric power plant in Chile . The dam dams the Melado , a left (southern) tributary of the Río Maule . It is located in Region VII , about 60 km southeast of the city of Talca . The Colbún dam is located approx. 20 km to the north-west.
The first considerations for the power plant go back to 1961. Detailed investigations were carried out between 1981 and 1986 and the infrastructure for the project was created. The company Empresa Eléctrica Pehuenche SA (EEP) was established in April 1986 to carry out the project. The Pehuenche power plant went into operation in September 1991, 17 months before the originally planned date. It is owned by EEP, a subsidiary of Empresa Nacional de Electricidad SA Chile (ENDESA) and is also operated by EEP.
Barrier structure
The barrier structure is a dam with a height of 90 m. The length of the dam crest is 310 m. The dam has a flood relief with three gates. A maximum of 3600 m³ / s can be discharged via the flood relief.
Reservoir
At the maximum storage target of 648 m above sea level , the reservoir holds 33 (or 133) million m³ of water. The minimum storage target is 639.5 m.
power plant
With an installed capacity of 570 MW , the Pehuenche power plant is one of the largest hydropower plants in Chile (as of April 2015). The average annual production fluctuates with the flow of water in the Melado: it was 2.4765 billion kWh in 2007 and 3.5485 billion kWh in 2006.
The first machine of the power plant was put into operation in May 1991, the second in September 1991. The machines are located in an underground machine house, about seven kilometers northwest of the dam. Two tunnels with a total length of 13.3 km connect the dam with the power plant. The Francis turbines were supplied by Neypric and the generators by Alstom- Jeumont. The turbines have a maximum output of 280 or 290 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 206 m. The maximum flow rate is 300 m³ / s.
Others
The International Bank for Reconstruction and Development (IBRD) estimated the total cost of the project in May 1987 at $ 799 million . The actual total cost of the power plant was only USD 395 (or 347) million. The IBRD granted a loan of USD 40.56 million for the construction of the power plant.
See also
Individual evidence
- ↑ STAFF APPRAISAL REPORT CHILE PEHUENCHE HYDROELECTRIC PROJECT AND ALTO JAHUEL-POLPAICO TRANSMISSION PROJECT Report No. 6687-CH. (PDF 4.9 MB pp. 15–16 (11–12)) International Bank for Reconstruction and Development (IBRD), May 15, 1987, accessed on April 16, 2015 .
- ↑ a b PROJECT COMPLETION REPORT PEHUENCHE HYDROELECTRIC PROJECT (LOAN 2832-CH) Report No. 13624. (PDF 1.6 MB p. 3) IBRD, October 24, 1994, accessed on April 16, 2015 (English).
- ↑ Empresa Eléctrica Pehuenche SA (No longer available online.) Empresa Nacional de Electricidad SA, archived from the original on April 17, 2015 ; accessed on April 16, 2015 .
- ↑ a b c d Pehuenche Hydroelectric Power Plant Chile. Global Energy Observatory, accessed April 16, 2015 .
- ↑ a b c d Pehuenche Plant (Chile). (No longer available online.) Empresa Nacional de Electricidad SA, archived from the original on April 17, 2015 ; accessed on April 16, 2015 .
- ↑ a b IBRD, COMPLETION, p. 32 (20)
- ↑ IBRD, COMPLETION, p. 17 (5)
- ↑ IBRD, APPRAISAL, p. 6 (2)
- ↑ IBRD, COMPLETION, p. 19 (7)