Raiva Dam ( pt, Barragem da Raiva, links=no, also known as ''Barragem do Coiço'') is a

concrete Concrete is a composite material composed of fine and coarse aggregate bonded together with a fluid cement (cement paste) that hardens (cures) over time. Concrete is the second-most-used substance in the world after water, and is the most wi ...

gravity dam A gravity dam is a dam constructed from concrete or stone masonry and designed to hold back water by using only the weight of the material and its resistance against the foundation to oppose the horizontal pressure of water pushing against it. ...

on the Mondego. It is located in the municipality Penacova, in Coimbra District,

Portugal Portugal, officially the Portuguese Republic ( pt, República Portuguesa, links=yes ), is a country whose mainland is located on the Iberian Peninsula of Southwestern Europe, and whose territory also includes the Atlantic archipelagos of ...

. The dam was completed in 1981. It is owned by ''Companhia Portuguesa de Produção de Electricidade'' (CPPE). The dam is used for power generation and flood control.

Dam

Raiva Dam is a 36 m tall (height above foundation) and 200 m long gravity dam with a crest altitude of 64.5 m. The volume of the dam is 85,000 m³. The spillway with 2 radial gates is part of the dam body (maximum discharge 2,000 m³/s). There is also a bottom outlet.

Reservoir

At full reservoir level of 61.5 m the reservoir of the dam has a surface area of 2.3 km² and a total capacity of 24.11 mio. m³. The active capacity is 14.71 (12) mio. m³. The reservoir of Raiva Dam serves as lower reservoir for the Aguieira

pumped-storage Pumped-storage hydroelectricity (PSH), or pumped hydroelectric energy storage (PHES), is a type of hydroelectric energy storage used by electric power systems for load balancing. The method stores energy in the form of gravitational potential ...

power plant, which is located about 10 km upstream of Raiva dam.

Power plant

The

hydroelectric Hydroelectricity, or hydroelectric power, is electricity generated from hydropower (water power). Hydropower supplies one sixth of the world's electricity, almost 4500 TWh in 2020, which is more than all other renewable sources combined and ...

power plant was commissioned in 1982 (1981). It is operated by EDP. The plant has a nameplate capacity of 24 (20) MW. Its average annual generation is 44.9 (44, 44.8, or 46)

GWh A kilowatt-hour (unit symbol: kW⋅h or kW h; commonly written as kWh) is a unit of energy: one kilowatt of power for one hour. In terms of SI derived units with special names, it equals 3.6 megajoules (MJ). Kilowatt-hours are a common bil ...

. The power station contains 2

Francis turbine The Francis turbine is a type of water turbine. It is an inward-flow reaction turbine that combines radial and axial flow concepts. Francis turbines are the most common water turbine in use today, and can achieve over 95% efficiency. The proces ...

-generators (horizontal shaft) with 13 MW (13 MVA) in a dam powerhouse located on the left side of the dam. The turbine rotation is 200 rpm. The minimum

hydraulic head Hydraulic head or piezometric head is a specific measurement of liquid pressure above a vertical datum., 410 pages. See pp. 43–44., 650 pages. See p. 22. It is usually measured as a liquid surface elevation, expressed in units of length, ...

is 12 m, the maximum 18 m. Maximum flow per turbine is 80 m³/s.

References

{{DEFAULTSORT:Raiva Dam Dams in Portugal Hydroelectric power stations in Portugal Gravity dams Dams completed in 1981 Energy infrastructure completed in 1981 1981 establishments in Portugal Buildings and structures in Coimbra District

Dam

Reservoir

Power plant

See also

References