Pocinho Dam

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Official nameBarragem do Pocinho
CountryPortugal
Coordinates41°8′3.5″N 7°6′50.8″W / 41.134306°N 7.114111°W / 41.134306; -7.114111
Pocinho Dam
Pocinho Dam is located in Portugal
Pocinho Dam
Pocinho Dam
Location of Pocinho Dam in Portugal
Official nameBarragem do Pocinho
CountryPortugal
Locationmunicipality Vila Nova de Foz Côa, Guarda District
Coordinates41°8′3.5″N 7°6′50.8″W / 41.134306°N 7.114111°W / 41.134306; -7.114111
PurposePower
StatusOperational
Construction began1974
Opening date1982
OwnerCompanhia Portuguesa de Produção de Electricidade
OperatorEnergias de Portugal
Dam and spillways
Type of damConcrete gravity dam
ImpoundsDouro
Height (foundation)49 m (161 ft)
Length430 m (1,410 ft)
Elevation at crest139 m (456 ft)
Width (crest)6.4 m (21 ft)
Dam volume120,000 m3 (4,200,000 cu ft)
Spillway typeDam body
Spillway capacity15,000 m3/s (530,000 cu ft/s)
Reservoir
Total capacity83,070,000 m3 (67,350 acre⋅ft)
Active capacity12,240,000 m3 (9,920 acre⋅ft)
Surface area8.29 km2 (3.20 mi2)
Normal elevation125.5 m (412 ft)
Power Station
OperatorEnergias de Portugal
Commission date1983
Hydraulic head21.6 m (71 ft) (max)
Turbines3 x 57.6 MW Kaplan-type
Installed capacity186 MW
Annual generation408.4 GWh

Pocinho Dam (Portuguese: Barragem do Pocinho) is a concrete gravity dam on the Douro, where the river forms the border line between the districts of Guarda and Bragança. It is located in the municipality Vila Nova de Foz Côa, in Guarda District, Portugal.

Construction of the dam began in 1974. The dam was completed in 1982. It is owned by Companhia Portuguesa de Produção de Electricidade (CPPE).[1]

Pocinho Dam is a 49 m tall (height above foundation) and 430 m long gravity dam with a crest altitude of 139 m. The volume of the dam is 120,000 m3. The spillway with 4 radial gates is part of the dam body (maximum discharge 15,000 m3/s).[1]

Reservoir

At full reservoir level of 125.5 m (maximum flood level of 134.5 m) the reservoir of the dam has a surface area of 8.29 km2 and a total capacity of 83.07 mio. m3. The active capacity is 12.24 (12)[2][3] mio. m3.[1]

Power plant

The run-of-the-river hydroelectric power plant was commissioned in 1983[2][3] (1982).[4] It is operated by EDP. The plant has a nameplate capacity of 186[1][2][3][4][5] MW. Its average annual generation is 408.4[2] (406.2,[5] 530[3] or 534[1][4]) GWh.

The power station contains 3 Kaplan turbine-generators with 57.6 MW (62 MVA) each in a dam powerhouse located on the left side of the dam. The turbine rotation is 88.2 rpm. The minimum hydraulic head is 15.5 m, the maximum 21.6 m. Maximum flow per turbine is 390 m3/s.[2]

The turbines were provided by Kværner, the generators by ABB Group.[4]

Lock

See also

References

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