Vargfors Hydroelectric Power Station

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Vargfors Hydroelectric Power Station
Vargfors.jpg
Sweden relief location map.jpg
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Location of Vargfors Hydroelectric Power Station in Sweden
Official name Vargfors kraftstation
Location Västerbotten County, Sweden
Coordinates 65°01′18″N19°41′09″E / 65.021708°N 19.685783°E / 65.021708; 19.685783 Coordinates: 65°01′18″N19°41′09″E / 65.021708°N 19.685783°E / 65.021708; 19.685783
Purpose Power
Status Operational
Opening date 1961
Owner(s) Vattenfall
Operator(s) Vattenfall
Dam and spillways
Type of dam Concrete arch dam
Impounds Skellefte River
Commission date 1961
Hydraulic head 49 m
Turbines 1 Francis- and 1 Kaplan turbine
Installed capacity 122 MW
Annual generation 452 GWh

Vargfors Hydroelectric Power Station (Swedish: Vargfors kraftstation) is a run-of-the-river hydroelectric power plant on the Skellefte River in Västerbotten County, Sweden. About 15 km southwest of Vargfors is the urban area Norsjö.

Run-of-the-river hydroelectricity hydro power station with no or only very small reservoir for storage

Run-of-river hydroelectricity (ROR) or run-of-the-river hydroelectricity is a type of hydroelectric generation plant whereby little or no water storage is provided. Run-of-the-river power plants may have no water storage at all or a limited amount of storage, in which case the storage reservoir is referred to as pondage. A plant without pondage is subject to seasonal river flows, thus the plant will operate as an intermittent energy source. Conventional hydro uses reservoirs, which regulate water for flood control and dispatchable electrical power.

Hydroelectricity electricity generated by hydropower

Hydroelectricity is electricity produced from hydropower. In 2015, hydropower generated 16.6% of the world's total electricity and 70% of all renewable electricity, and was expected to increase about 3.1% each year for the next 25 years.

Skellefte River river in Sweden

The Skellefte River is a river in northern Sweden; one of the major Norrland rivers..

Contents

The power plant was operational in 1961. It is owned and operated by Vattenfall. [1] [2]

Vattenfall is a Swedish power company, wholly owned by the Swedish state. Beyond Sweden, the company generates power in Denmark, Finland, Germany, the Netherlands, and the United Kingdom.

Dam

Vargfors Dam consists of one concrete arch dam and two additional embankment dams.

Arch dam solid dam made of concrete that is curved upstream in plan

An arch dam is a concrete dam that is curved upstream in plan. The arch dam is designed so that the force of the water against it, known as hydrostatic pressure, presses against the arch, compressing and strengthening the structure as it pushes into its foundation or abutments. An arch dam is most suitable for narrow canyons or gorges with steep walls of stable rock to support the structure and stresses. Since they are thinner than any other dam type, they require much less construction material, making them economical and practical in remote areas.

Power plant

The power plant contains 1 Francis- and 1 Kaplan turbine-generator. The total nameplate capacity is 122 MW. Its average annual generation is 452 GWh. The hydraulic head is 49 m. [1] Maximum flow is 136 m³/s. [2]

Francis turbine type of water turbine that was developed by James B. Francis in Lowell, Massachusetts

The Francis turbine is a type of water turbine that was developed by James B. Francis in Lowell, Massachusetts. It is an inward-flow reaction turbine that combines radial and axial flow concepts.

Kaplan turbine propeller-type water turbine which has adjustable blades

The Kaplan turbine is a propeller-type water turbine which has adjustable blades. It was developed in 1913 by Austrian professor Viktor Kaplan, who combined automatically adjusted propeller blades with automatically adjusted wicket gates to achieve efficiency over a wide range of flow and water level.

Hydraulic head specific measurement of liquid pressure above a geodetic datum

Hydraulic head or piezometric head is a specific measurement of liquid pressure above a vertical datum.

See also

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References

  1. 1 2 "Vargfors" (in Swedish). vattenkraft.info. Retrieved 2016-06-03.
  2. 1 2 "Vargfors". Vattenfall . Retrieved 2016-06-03.

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