Carrapatelo Dam (Portuguese: Barragem do Carrapatelo) is a concrete gravity dam on the Douro, where the river forms the borderline between the districts of Porto and Viseu. It is located in the municipalities of Marco de Canaveses, in Porto District, and Cinfães, Viseu District, Portugal.
| Carrapatelo Dam | |
|---|---|
.jpg) | |
  Location of Carrapatelo Dam in Portugal | |
| Official name | Barragem do Carrapatelo |
| Country | Portugal |
| Location | municipalities of Marco de Canaveses, Porto District and Cinfães, Viseu District |
| Coordinates | 41°5′5.6″N 8°7′50.2″W / 41.084889°N 8.130611°W |
| Status | Operational |
| Construction began | 1964 |
| Opening date | 1972 |
| Owner(s) | Companhia Portuguesa de Produção de Electricidade |
| Operator(s) | Energias de Portugal |
| Dam and spillways | |
| Type of dam | Concrete gravity dam |
| Impounds | Douro |
| Height (foundation) | 57 m (187 ft) |
| Length | 400 m (1,300 ft) |
| Elevation at crest | 55 m (180 ft) |
| Dam volume | 190,000 m3 (6,700,000 cu ft) |
| Spillway type | Dam body |
| Spillway capacity | 22,000 m3 (780,000 cu ft) |
| Reservoir | |
| Total capacity | 148,400,000 m3 (120,300 acre⋅ft) |
| Active capacity | 9,000,000 m3 (7,300 acre⋅ft) |
| Surface area | 9.52 km2 (3.68 sq mi) |
| Normal elevation | 46.5 m (153 ft) |
| Operator(s) | Energias de Portugal |
| Commission date | 1971 |
| Hydraulic head | 37 m (121 ft) (max) |
| Turbines | 3 x 63.4 MW Kaplan-type |
| Installed capacity | 201 MW |
| Annual generation | 806.1 GWh |
Construction of the dam began in 1964. The dam was completed in 1972. It is owned by Companhia Portuguesa de Produção de Electricidade (CPPE).[1]
Dam
editCarrapatelo Dam is a 57 m tall (height above foundation) and 400 m long gravity dam with a crest altitude of 55 m. The volume of the dam is 190,000 m³. The spillway is part of the dam body (maximum discharge 22,000[2] m³/s). There is also a bottom outlet.[1]
Reservoir
editAt full reservoir level of 46.5 m the reservoir of the dam has a surface area of 9.52 km² and its total capacity is 148.4 mio. m³. The active capacity is 9 (15,6[2] or 16[3]) mio. m³.[1]
Power plant
editThe run-of-the-river hydroelectric power plant went operational in 1971. It is owned by CPPE, but operated by EDP.[4] The plant has a nameplate capacity of 201[1][2][4][5] (180)[3] MW. Its average annual generation is 806.1[2] (783,[5] 870.6[1][4] or 882[3]) GWh.
The power station contains 3 Kaplan turbine-generators with 63.4 MW each in a dam powerhouse. The turbine rotation is 115.4 rpm. The minimum hydraulic head is 20 m, the maximum 37 m. Maximum flow per turbine is 290 m³/s.[2]
The first 2 machines went operational in 1971, the third in 1972. The turbines were provided by Kværner, the generators by Brown, Boveri & Cie.[4]
Lock
edit
On the right side of the dam is a lock, which can handle ships with the following maximum properties: 83 m in length, 11.40 m on the beam, 3.8 m load-draught and a cargo capacity of 2500 tons.[6] The water level change through the lock is about 35 m.
See also
edit
References
edit- ^ a b c d e "CARRAPATELO DAM". APA Barragens de Portugal. Retrieved 2015-02-11.
- ^ a b c d e "Carrapatelo Informação Técnica" (in Portuguese). Energias de Portugal. Archived from the original on 2017-08-13. Retrieved 2015-02-11.
- ^ a b c "Hidroelectricidade em Portugal memória e desafio" (PDF) (in Portuguese). Rede Eléctrica Nacional, S.A. p. 29 (27). Archived from the original (PDF) on 2021-06-27. Retrieved 2015-02-05.
- ^ a b c d "Carrapatelo Hydroelectric Power Plant Portugal". Global Energy Observatory. Retrieved 2015-02-11.
- ^ a b "DECLARAÇÃO AMBIENTAL 2012" (PDF) (in Portuguese). Energias de Portugal. pp. 34–35 (32–33). Archived from the original (PDF) on 2014-11-03. Retrieved 2015-02-07.
- ^ "waterway introduction". Instituto Portuário e dos Transportes Marítimos. Retrieved 2015-02-11.
