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Inside the Robert-Bourassa generating station, in northern Quebec, the world's largest underground power station, with an installed capacity of 5,616 MW.. An underground power station is a type of hydroelectric power station constructed by excavating the major components (e.g. machine hall, penstocks, and tailrace) from rock, rather than the more common surface-based construction methods.
Bahasa Indonesia: Diagram skematik pembangkit listrik tenaga air (PLTA) English : Schematic diagram of Hydroelectric power plant Español : Recorrido del agua dentro de una central hidroeléctrica
The catchment basin of the source, especially the Bambarabatu Oya sub-catchment, experiences some of the highest and most consistent rainfall in Sri Lanka. In total, the plant has a catchment area of 172.58km2. The project comprises a diversion weir, intake, headrace channel, forebay, penstocks, powerhouse, tailrace, and switchyard.
The power station has two hydro turbine generator sets, each rated at 60 MW, giving the station a total capacity of 120 MW. The tailrace tunnel, which flows into the Tongariro River, is 3-kilometre (1.9 mi) long.
After power generation the water will be discharged into the lower reservoir via four tailrace tunnels. When pumping water moves through the same conduits back to the upper reservoir. The power plant will contain four Francis pump-turbines which are rated at 260 MW each for power generation and 275 MW for pumping. The upper reservoir will lie ...
ManapÅuri Power Station is an underground hydroelectric power station on the western arm of Lake Manapouri in Fiordland National Park, in the South Island of New Zealand. At 854 MW installed capacity (although limited to 800 MW due to resource consent limits [ 3 ] ), it is the largest hydroelectric power station in New Zealand, and the second ...
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Stoplogs of a hydro power plant which can close the water flow to the turbine. Stoplogs are modular in nature, giving the operator of a gated structure the ability to control the water level in a channel by adding or removing individual stoplogs. A gate may make use of one or more logs.