Dam Alto Rabagão
| Dam Alto Rabagão | ||
|---|---|---|
 |
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| location | ||
|
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| Coordinates | 41 ° 44 '22 " N , 7 ° 51' 27" W | |
| country |
 Portugal
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| place | Vila Real district | |
| Waters | Rabagão | |
| Height upstream | 880 m | |
| power plant | ||
| owner | Companhia Portuguesa de Produção de Electricidade (CPPE) | |
| operator | Energias de Portugal (EDP) | |
| Start of planning | 1957 | |
| Start of operation | 1964 | |
| technology | ||
| Bottleneck performance | 68 megawatts | |
| Average height of fall |
129 to 185 m | |
| Expansion flow | 25.7 m³ / s | |
| Standard work capacity | 97 million kWh / year | |
| Turbines | Francis turbines : 2 × 34 MW | |
| Generators | 2 × 45 MVA | |
| Others | ||
The Alto Rabagão dam ( Portuguese Barragem do Alto Rabagão , also known as Barragem dos Pisões ) is located in the northern region of Portugal in the Vila Real district . It dams the river Rabagão , a left or southern tributary of the Cávado to a reservoir (port. Albufeira (da Barragem) do Alto Rabagão ). Downstream of the Alto Rabagão dam is the municipality of Vila da Ponte and then the Venda Nova dam . The national road (port. Estrada Nacional ) N103 runs north of the reservoir .
The project to build the dam began in 1957. The construction was completed in 1964. The dam is used to generate electricity. It is owned by the Companhia Portuguesa de Produção de Electricidade (CPPE).
Barrier structure
The barrier structure consists of an arch dam in the middle, flanked by gravity dams on the sides. It is made of concrete and has a height of 94 m above the foundation level . The top of the wall lies at a height of 880 m above sea level . Their length is 1,897 (or 1,970) m. The volume of the structure is 1,117,000 m³.
The dam wall has both a bottom outlet and a flood relief . A maximum of 360 m³ / s can be discharged via the bottom outlet, and a maximum of 500 m³ / s via the flood discharge. The design flood is 860 m³ / s.
Reservoir
With the normal storage target of 880 m (maximum 880.1 m at high water), the reservoir extends over an area of around 22.12 km² and holds 568.69 million m³ of water - of which 557.92 (or 550) million can be. m³ can be used to generate electricity. The minimum congestion destination at which the machines can still be operated is 829 m. With the usable 550 million m³ of water, 973.1 million kWh can be generated.
power plant
The Alto Rabagão pumped storage power plant is one of the smaller hydropower plants in Portugal with an installed capacity of 68 (or 72) MW . The average annual generation is 97 (or 83, 85.2 or 95) million kWh .
The power plant's two Francis turbines are located in a machine house at the foot of the dam. They each provide a maximum of 36.75 (or 34) MW and the generators 45 MVA . The rated speed of the turbines is 428 rpm. The pumps each have a maximum output of 31.7 MW; one pump can transport a maximum of 18 m³ / s. The nominal voltage of the generators is 10 kV . In the switchgear , the generator voltage of 10 kV is increased to 165 kV by means of power transformers.
The minimum height of fall is 129 m, the maximum 185 m. The maximum flow rate is 25.7 m³ / s.
The power plant is owned by CPPE but operated by Energias de Portugal (EDP).
See also
Web links
- ALTO RABAGÃO. Youtube, accessed on September 18, 2014 (Portuguese).
Individual evidence
- ↑ a b c d e ALTO RABAGÃO DAM. APA Barragens de Portugal, accessed November 5, 2014 .
- ↑ Alto Rabagão Dam. Structurae International Database for Structures and Civil Engineers, accessed September 18, 2014 .
- ↑ a b c d e Alto Rabagao Hydroelectric Power Plant Portugal. Global Energy Observatory, accessed September 18, 2014 .
- ↑ a b c d e f Alto Rabagão Informação Técnica. EDP , accessed December 27, 2014 (Portuguese).
- ↑ a b c Hidroelectricidade em Portugal memória e desafio. (PDF 226 KB p. 29 (27)) Rede Eléctrica Nacional, SA (REN), accessed on November 5, 2014 (Portuguese).
- ↑ a b DECLARAÇÃO AMBIENTAL 2012. (PDF 16.1 MB pp. 18–20 (16–18)) EDP , accessed on November 5, 2014 (Portuguese).