Cabril dam
| Cabril dam | ||
|---|---|---|
 |
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| location | ||
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| Coordinates | 39 ° 55 '2 " N , 8 ° 7' 57" W | |
| country |
 Portugal
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| place | Pedrógão Grande , Leiria District | |
| Waters | Zezere | |
| Height upstream | 294 m | |
| power plant | ||
| owner | Companhia Portuguesa de Produção de Electricidade (CPPE) | |
| operator | Energias de Portugal (EDP) | |
| Start of planning | 1950 | |
| Start of operation | 1954 | |
| technology | ||
| Bottleneck performance | 97 megawatts | |
| Average height of fall |
84.6 to 121.5 m | |
| Expansion flow | 54 m³ / s | |
| Standard work capacity | 301 million kWh / year | |
| Turbines | Francis turbines : 2 × 47 MW | |
| Generators | 2 × 61 MVA | |
| Others | ||
The Cabril dam ( Portuguese Barragem do Cabril ) is located in the region of central Portugal . It dams the river Zêzere , which at this point forms the border between the districts of Castelo Branco and Leiria , to a reservoir (port. Albufeira da Barragem do Cabril ). The small town of Pedrógão Grande is about 200 m west of the dam.
The project to build the dam began in 1950. The construction was completed in 1954. The dam is used to generate electricity. It is owned by the Companhia Portuguesa de Produção de Electricidade (CPPE).
Barrier structure
The barrier structure is a double-curved concrete arch dam with a height of 132 (or 136) m above the foundation base . The top of the wall lies at a height of 297 m above sea level . The length of the top of the wall is 290 m. The volume of the structure is 360,000 m³.
The dam wall has both a bottom outlet and a flood relief on both sides of the dam wall, through which the water can be discharged through an underground tunnel. A maximum of 200 m³ / s can be discharged via the bottom outlet, and a maximum of 2,200 m³ / s via the flood discharge. The design flood is 4,000 m³ / s; the probability of this event occurring has been determined to be once in 1,000 years.
Reservoir
With a normal storage target of 294 m (max. 296.3 m at high water), the reservoir extends over an area of around 20.23 km² and holds 720 (or 719) million m³ of water - of which 615 (or 614) can Million m³ are used to generate electricity. With the usable 615 million m³ of water, 339.3 million kWh can be generated.
power plant
With an installed capacity of 97 (or 98 or 108) MW, the Cabril power plant is one of the medium-sized hydropower plants in Portugal. The average annual production is 301 (or 304.8 or 312) million. kWh .
The power plant was commissioned in 1954. The Francis turbines and generators were supplied by Alstom . The two machines are located in a machine house at the foot of the dam. The two turbines of the power plant each produce a maximum of 47 (or 49) MW and the associated generators 61 MVA . The rated speed of the turbines is 214.3 / min. The generators have a nominal voltage of 15.5 kV . In the switchgear , the generator voltage of 15.5 kV is increased to 165 kV by means of power transformers.
The minimum height of fall is 84.6 m, the maximum 121.5 m. The maximum flow is 54 m³ / s.
The power plant is owned by CPPE but operated by Energias de Portugal (EDP).
See also
Web links
- Barragem do Cabril - descargas de fundo. Youtube, accessed October 24, 2014 (Portuguese).
Individual evidence
- ↑ a b c d e CABRIL DAM. APA Barragens de Portugal, accessed October 24, 2014 .
- ↑ a b Cabril dam. Structurae International Database for Structures and Civil Engineers, accessed October 24, 2014 .
- ↑ CABRIL. APA Barragens de Portugal, accessed October 24, 2014 .
- ↑ a b c Hidroelectricidade em Portugal memória e desafio. (PDF 226 KB p. 30 (28)) Rede Eléctrica Nacional, SA (REN), accessed on January 3, 2015 (Portuguese).
- ↑ a b c d e Cabril Hydroelectric Power Plant Portugal. Global Energy Observatory, accessed October 24, 2014 .
- ↑ a b c d e Cabril Informação Técnica. EDP , accessed January 3, 2015 (Portuguese).
- ^ Hydroelectric Plants in Portugal. (No longer available online.) Power Plants Around the World, archived from the original on July 16, 2014 ; accessed on October 24, 2014 .
- ↑ DECLARAÇÃO AMBIENTAL 2012. (PDF 16.1 MB p. 48 (46)) EDP , accessed on January 3, 2015 (Portuguese).