Nygårds Power Station | |
---|---|
Official name | Nygård kraftverk |
Country | Norway |
Location | Narvik |
Coordinates | 68°28′33″N17°37′33″E / 68.47583°N 17.62583°E Coordinates: 68°28′33″N17°37′33″E / 68.47583°N 17.62583°E |
Status | Operational |
Opening date | 1932 |
Owner(s) | Nordkraft |
Upper reservoir | |
Creates | Trollvatn |
Lower reservoir | |
Creates | Rombaksfjorden (Norwegian Sea) |
Power Station | |
Hydraulic head | 250-259 m [1] |
Turbines | 3 |
Installed capacity | 25 MW |
Capacity factor | 50.3% |
Annual generation | 110 GW·h |
Nygårds Power Station is a hydroelectric power plant in Storelva in Narvik. It has a power output of 25 MW generated by three vertical Francis turbines. [1] Originally, it was used also for the generation of single phase AC for the railway, but today only three phase AC is produced.
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.
Alternating current (AC) is an electric current which periodically reverses direction, in contrast to direct current (DC) which flows only in one direction. Alternating current is the form in which electric power is delivered to businesses and residences, and it is the form of electrical energy that consumers typically use when they plug kitchen appliances, televisions, fans and electric lamps into a wall socket. A common source of DC power is a battery cell in a flashlight. The abbreviations AC and DC are often used to mean simply alternating and direct, as when they modify current or voltage.
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Folsom Powerhouse State Historic Park is a historical site preserving an 1895 alternating current (AC) hydroelectric power station—one of the first in the United States.
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Kjofossen Power Station is a hydroelectric power plant at Sogn og Fjordane built during World War II. Part of its power is used as railway traction current, i.e. single-phase electric power at 16 2/3 hertz, fed directly into the overhead wire of the railway to Bergen. The only other power station in Norway to produce traction current is Hakavik Power Station.
Porjus power station is one of the oldest and largest power plants in Sweden, situated near Porjus. It was built 1910-1915 and has a power of 480 MW. Besides three-phase AC, the plant originally also generated single phase 15 Hz AC for railway traction and hence, two single-phase 80 kV power lines ran along the Iron Ore Line Malmbanan where it was transformed down to 16 kV in substations. However this system was later abandoned in favor of rotary converter stations. The original machines for single phase AC were subsequently scrapped.
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Vallur Thermal Power Station is a power plant located in Athipattu Pudunagar, Vallur in Thiruvallur district, North Chennai, India. The power plant is operated by NTPC Tamil Nadu Energy Company Limited, a joint venture between NTPC Limited and TANGEDCO and has three units with 500 MW each.
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