Caniçada dam
| Caniçada dam | ||
|---|---|---|
 |
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| location | ||
|
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| Coordinates | 41 ° 39 '11 " N , 8 ° 13' 52" W | |
| country |
 Portugal
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| place | Caniçada parish , Braga district | |
| Waters | Cávado | |
| Height upstream | 162 m | |
| power plant | ||
| owner | Companhia Portuguesa de Produção de Electricidade (CPPE) | |
| operator | Energias de Portugal (EDP) | |
| Start of operation | 1955 | |
| technology | ||
| Bottleneck performance | 62 megawatts | |
| Average height of fall |
77 to 121 m | |
| Expansion flow | 34 m³ / s | |
| Standard work capacity | 337.4 million kWh / year | |
| Turbines | Francis turbines : 2 × 31 MW | |
| Generators | 2 × 34 MVA | |
| Others | ||
The Caniçada dam ( Barragem da Caniçada in Portuguese ) is located in the northern region of Portugal in the Braga district near the municipality of Caniçada . It dams the river Cávado and its tributary Rio Gerês to a four-armed reservoir (port. Albufeira (da Barragem) da Caniçada ). In the middle of the reservoir, near the point where the Rio Gerês originally flowed into the Rio Cávado, the lake is spanned by two bridges. To the north of the reservoir is the Peneda-Gerês National Park and part of the lake area belongs to the National Park. The city of Braga is about 15 km southwest of the Caniçada dam. Upstream, the next hydroelectric power station on the Cávado is the Salamonde dam .
The dam was completed in 1954 (or 1955). It is used to generate electricity. The dam is owned by the Companhia Portuguesa de Produção de Electricidade (CPPE).
Barrier structure
The barrier structure is a concrete arch dam with a height of 76 m above the foundation base . The top of the wall is at a height of 163 m above sea level . The length of the top of the wall is 246 m. The volume of the structure is 90,000 m³.
The dam wall has both a bottom outlet and a flood relief with four gates, which are located in the middle of the dam wall at the top of the wall. A maximum of 142 m³ / s can be discharged via the bottom outlet, and a maximum of 1,700 m³ / s via the flood discharge.
Reservoir
With a normal storage target of 162 m, the reservoir extends over an area of around 6.89 (or 5.78) km² and holds 170.6 million m³ of water - of which 159.3 (or 144 or 144.4) Million m³ are used to generate electricity. With the usable 144.4 million m³ of water, 32 million kWh can be generated.
power plant
With an installed capacity of 60 (or 62 or 100) MW, the Caniçada power plant is one of the smaller hydroelectric plants in Portugal. The average annual production is 346 (or 283, 337.4 or 345) million. kWh .
Two machines with a maximum output of 30 (or 50) MW each are installed. They are located in an underground machine house that is 134 m below the surface. The Francis turbines and the associated generators were supplied by Voith . The turbines have a maximum output of 31 MW and the associated generators 34 MVA . The rated speed of the turbines is 300 rpm. The generator has a nominal voltage of 10.25 kV . In the switchgear , the generator voltage is increased from 10.25 kV to 158 kV using power transformers.
The minimum height of fall is 77 m, the maximum 121 m. The maximum flow rate is 34 m³ / s per turbine.
The power plant is owned by the CPPE but operated by EDP .
See also
Web links
- Barragem da Caniçada. Youtube, accessed October 24, 2014 (Portuguese).
Individual evidence
- ↑ a b c d e f g Caniçada Informação Técnica. EDP , accessed January 4, 2015 (Portuguese).
- ↑ a b c d e CANIÇADA DAM. APA Barragens de Portugal, accessed October 24, 2014 .
- ↑ Caniçada dam. Structurae International Database for Structures and Civil Engineers, accessed October 24, 2014 .
- ↑ a b c d DECLARAÇÃO AMBIENTAL 2012. (PDF 16.1 MB p. 23 (21)) EDP , accessed on January 4, 2015 (Portuguese).
- ↑ a b c d Hidroelectricidade em Portugal memória e desafio. (PDF 226 KB p. 29 (27)) Rede Eléctrica Nacional, SA (REN), accessed on January 4, 2015 (Portuguese).
- ↑ CANIÇADA. APA Barragens de Portugal, accessed October 24, 2014 .
- ↑ a b c d e Canicada Hydroelectric Power Plant Portugal. Global Energy Observatory, accessed October 24, 2014 .
- ^ A b 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 .