Harsprånget hydroelectric power station

Harsprånget is a hydroelectric power station located on the Lule River in northern Sweden, just downstream of Porjus.

Harsprånget
Location of Harsprånget in Sweden
CountrySweden
LocationSouth of Porjus
Coordinates66°57′15″N 19°48′53″E
StatusOperational
Construction began1918 Cancelled 1921
Restarted 1945
Opening date1951
Owner(s)Vattenfall
Dam and spillways
Type of damRock-fill dam
ImpoundsLule River
Height50 m (164 ft)
Length1,400 m (4,600 ft)
Dam volume6,000,000 m3 (210,000,000 cu ft)
Reservoir
CreatesHarsprånget Reservoir
Power Station
TypeConventional
Hydraulic head107 M
Turbines3*110 MW, 1*180 MW, 1*465 MW, All of Francis-type
Installed capacity977 MW
Annual generation2,1 TWh (2009)

With a power of 977 MW,[1] it's the largest hydroelectric power station in Sweden, and also the fourth largest in the Nordic countries. The name means "Hare Run" in Swedish. This was also the name of the mighty rapids there, and the name was related to the sharp turns in the rapids, a little similar to the ones a hare does when fleeing. Normal year production is around 2131 GWh. Total fall height is around 107 m.

History

Construction of the station started in 1918. However, recession after World War I cancelled the construction, which was not started again before 1945. It was opened in 1951, then with a power of 330 MW. In 1980, two new turbines were installed which increased the max power to 945 MW. The rated power was later increased further.

Turbines

The turbines are of Francis type with vertical axis and steel spirals.
Units12345
Capacity110 MW110 MW110 MW180 MW475 MW
Maximum water flow127 m³/s127 m³/s127 m³/s175 m³/s485 m³/s
Revolutions/min166,7 r/min166,7 r/min166,7 r/min166,7 r/min107,1 r/min
Cog diameter3,6 m3,6 m3,6 m4,2 m6,6 m
SupplierNOHABNOHABNOHABKMWNOHAB

Grand total of 977 MW.

References

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