Touvedo dam
| Touvedo dam | ||
|---|---|---|
| location | ||
|
||
| Coordinates | 41 ° 48 ′ 45 ″ N , 8 ° 21 ′ 13 ″ W | |
| country |
 Portugal
|
|
| place | Viana do Castelo district | |
| Waters | Lima | |
| Height upstream | 50 m | |
| power plant | ||
| owner | Companhia Portuguesa de Produção de Electricidade (CPPE) | |
| operator | Energias de Portugal (EDP) | |
| construction time | 1987 to 1993 | |
| Start of operation | 1993 | |
| technology | ||
| Bottleneck performance | 22 megawatts | |
| Average height of fall |
20 to 25 m | |
| Expansion flow | 100 m³ / s | |
| Standard work capacity | 66.8 million kWh / year | |
| Turbines | Kaplan turbine : 1 × 22 MW | |
| Generators | 1 × 24 MVA; 6 kV | |
| Others | ||
The Touvedo dam ( Portuguese Barragem de Touvedo ) is located in the north of Portugal in the Viana do Castelo district . It dams the Lima River into a reservoir. The small town of Ponte da Barca is around five kilometers downstream .
The project to build the dam began in 1987. The construction was completed in 1993 (or 1996). In addition to generating electricity, the dam is also used for irrigation and flood protection. It is owned by the Companhia Portuguesa de Produção de Electricidade (CPPE).
Barrier structure
The barrier structure is a concrete gravity dam with a height of 42.5 (or 43) m above the foundation base . The top of the wall is at a height of 55 m above sea level . The length of the top of the wall is 133.5 (or 134) m. The volume of the structure is 74,620 (or 75,000) m³.
The dam wall has both a bottom outlet and a flood relief with three gates. A maximum of 50 m³ / s can be discharged via the bottom outlet, and a maximum of 3,200 m³ / s via the flood discharge. The design flood is 3,200 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 50 m, the reservoir extends over an area of around 1.72 km² and holds 15.5 million m³ of water - of which 4.5 (or 4) million m³ can be used. The minimum stowage destination at which the machines can still be operated is 47.5 m. With the usable 4.5 million m³ of water, 0.2 million kWh can be generated.
The reservoir serves as a lower basin for the Alto-Lindoso pumped storage power plant . A 4.88 km long tunnel connects the cavern power station of the Alto-Lindoso dam with the Touvedo reservoir.
power plant
With an installed capacity of 22 MW, the Touvedo power plant is one of the smaller hydropower plants in Portugal. The average annual generation is 67 (or 61, 66.8 or 78) million kWh .
The power plant's Kaplan turbine has a maximum output of 22.2 MW and the associated generator 24 MVA . Both the turbine and the generator were supplied by GEC Alsthom . The nominal speed of the turbines is 187.5 / min. The generator has a nominal voltage of 6 kV . In the switchgear , the generator voltage of 6 kV is increased to 63 kV by means of power transformers.
The minimum height of fall is 20 m, the maximum 25 m. The maximum flow rate is 100 m³ / s.
The power plant is owned by the CPPE but operated by EDP .
See also
Web links
- Hydroelectric Plants in Portugal. Power Plants Around the World, accessed November 10, 2014 .
Individual evidence
- ↑ a b c d Touvedo dam. Structurae International Database for Structures and Civil Engineers, accessed November 11, 2014 .
- ↑ a b c d e TOUVEDO DAM. APA Barragens de Portugal, accessed November 11, 2014 .
- ↑ a b Hidroelectricidade em Portugal memória e desafio. (PDF 226 KB p. 30 (28)) Rede Eléctrica Nacional, SA (REN), accessed on November 11, 2014 (Portuguese).
- ↑ a b c d e Touvedo Hydroelectric Power Plant Portugal. Global Energy Observatory, accessed November 10, 2014 .
- ↑ a b c d e Touvedo Informação Técnica. EDP , accessed November 11, 2014 (Portuguese).
- ^ Central do Alto Lindoso. (No longer available online.) Museu da Electricidade, archived from the original on April 22, 2015 ; Retrieved November 5, 2014 .
- ↑ a b DECLARAÇÃO AMBIENTAL 2012. (PDF 16.1 MB pp. 16–17 (14-15)) EDP , accessed on November 11, 2014 (Portuguese).