Régua power station

Régua power station
	location
Coordinates	41 ° 8 '46 " N , 7 ° 44' 24" W Coordinates: 41 ° 8 '46 " N , 7 ° 44' 24" W.
country	Portugal
place	Vila Real district
Waters	Douro
Height upstream	73.5 m
	power plant
owner	Companhia Portuguesa de Produção de Electricidade (CPPE)
operator	Energias de Portugal (EDP)
construction time	1965 to 1973
Start of operation	1973
	technology
Bottleneck performance	180 megawatts
Average ; height of fall	20 to 27.5 m
Expansion flow	948 m³ / s
Standard work capacity	581.1 million kWh / year
Turbines	Kaplan turbines : 3 × 58.84 MW
Generators	3 × 58 MVA
	Others

The Régua power plant ( Portuguese Barragem da Régua ) is a run-of-river power plant on the Douro . It is located in the Northern Portugal region in the Vila Real district . At this point the Douro forms the border between the districts of Vila Real and Viseu . The town of Peso da Régua is about four kilometers downstream from the dam .

The project to build the power plant began in 1965. It went into operation in 1973. The power plant is owned by Companhia Portuguesa de Produção de Electricidade (CPPE), but operated by Energias de Portugal (EDP).

Barrier structure

The barrier structure is a concrete gravity dam with a height of 41 (or 42) m above the foundation base . The top of the wall is at a height of 81 m above sea level . The length of the top of the wall is 350 (or 310) m and its width is 6 m. The volume of the structure is 108,000 m³.

The dam is divided into a machine house on the right side of the river and a weir system with the flood relief in the middle. There is a lock on the left bank of the river . A maximum of 21,500 m³ / s can be discharged via the flood relief, consisting of 5 gates. The dam also has a bottom outlet . The design flood is 21,500 m³ / s; the probability of this event occurring has been determined to be once every 1,000 years.

Reservoir

With a normal storage target of 73.5 m, the reservoir extends over an area of around 8.5 km² and holds 95 (or 91) million m³ of water - of which 12 (or 13) million m³ can be used to generate electricity.

power plant

With an installed capacity of 156 (or 180) MW, the Régua power plant is one of the medium-sized hydroelectric plants in Portugal. According to REN, the installed capacity at the time of commissioning in 1973 was 156 MW . The average annual generation is 738 (or 581.1, 620.8 or 682) million kWh . It is used to cover medium and peak loads .

The three Kaplan turbines were supplied by Kvaerner Turbin AB , the generators by BBC . The vertical shaft turbines have a maximum output of 58.84 (or 52) MW each, while the generators have 58 MVA . The rated speed of the turbines is 107.1 / min. The generators have a nominal voltage of 10 kV . In the switchgear , the generator voltage of 10 kV is increased to 240 kV by means of power transformers.

The minimum height of fall is 20 m, the maximum 27.5 m. The maximum flow rate is 316 m³ / s per turbine.

lock

On the left side of the dam there is a lock that can accommodate ships with a length of 83 m, a width of 11.40 m and a draft of 3.80 m. 28,000 m³ of water are required to lock a ship. (see also locks on the Douro )

Web links

Commons : Kraftwerk Régua - collection of images, videos and audio files

Individual evidence

↑ ^a ^b ^c ^d ^e ^f Regua Hydroelectric Power Plant Portugal. Global Energy Observatory, accessed November 16, 2014 .
^ Régua Informação Técnica. EDP , accessed on November 16, 2014 (Portuguese): "Tipo de aproveitamento Fio-de-água"
↑ ^a ^b ^c Régua dam. Structurae International Database for Structures and Civil Engineers, accessed November 16, 2014 .
↑ ^a ^b ^c ^d RÉGUA DAM. APA Barragens de Portugal, accessed November 16, 2014 .
↑ ^a ^b ^c ^d ^e Régua Informação Técnica. EDP , accessed November 16, 2014 (Portuguese).
↑ ^a ^b ^c ^d DECLARAÇÃO AMBIENTAL 2012. (PDF 16.1 MB pp. 32–33 (30–31)) EDP, accessed on November 16, 2014 (Portuguese).
↑ ^a ^b ^c Hidroelectricidade em Portugal memória e desafio. (PDF 226 KB p. 26,29 (24,27)) Rede Eléctrica Nacional, SA (REN), accessed on November 16, 2014 (Portuguese).
↑ waterway introduction. Instituto Portuário e dos Transportes Marítimos, accessed on November 11, 2014 (English): “Each of the dams contains a lock big enough to accept large boats (83m in length, 11.40m on the beam, 3.8 m load-draft and a cargo capacity of up to 2500 tons). "

[geo-1] ↑ ^a ^b ^c ^d ^e ^f Regua Hydroelectric Power Plant Portugal. Global Energy Observatory, accessed November 16, 2014 .

[EDP2-2] Régua Informação Técnica. EDP , accessed on November 16, 2014 (Portuguese): "Tipo de aproveitamento Fio-de-água"

[str-3] Régua dam. Structurae International Database for Structures and Civil Engineers, accessed November 16, 2014 .

[APA-4] RÉGUA DAM. APA Barragens de Portugal, accessed November 16, 2014 .

[EDP-5] Régua Informação Técnica. EDP , accessed November 16, 2014 (Portuguese).

[da-6] DECLARAÇÃO AMBIENTAL 2012. (PDF 16.1 MB pp. 32–33 (30–31)) EDP, accessed on November 16, 2014 (Portuguese).

[ren-7] Hidroelectricidade em Portugal memória e desafio. (PDF 226 KB p. 26,29 (24,27)) Rede Eléctrica Nacional, SA (REN), accessed on November 16, 2014 (Portuguese).

[iptm-8] waterway introduction. Instituto Portuário e dos Transportes Marítimos, accessed on November 11, 2014 (English): “Each of the dams contains a lock big enough to accept large boats (83m in length, 11.40m on the beam, 3.8 m load-draft and a cargo capacity of up to 2500 tons). "