hydroelectric power plant definition

The turbines in turn drive generators, which convert the turbines’ mechanical energy into electricity. Hydroelectric power, electricity produced from generators driven by turbines that convert the potential energy of moving water into mechanical energy. The potential energy of the water is converted into kinetic energy as it flows down through the penstock due to gravity. The working of Hydroelectric Power Plant is as follows. Water from the penstock is to be traveled to the water turbine and the turbine is coupled to an electric generator. Norris Dam, operated by the Tennessee Valley Authority, Norris, Tennessee. Learn how your comment data is processed. Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree.... Overview of efforts to create usable energy from waves, including a discussion of the Pelamis power generator in the North Sea off the coast of Scotland. Now let’s understand the working principle of it. The passage of water from the nozzle hits the turbine blades which makes the shaft of the turbine to rotate. Pumped-storage systems are efficient and provide an economical way to meet peak loads. When the tide comes in, water is impounded in one or more reservoirs. During off-peak periods, some of the extra power available is supplied to the generator operating as a motor, driving the turbine to pump water into an elevated reservoir. The dam is constructed on a large river to ensure sufficient water storage and the dam forms a reservoir behind it. Water released from the reservoir flows through a turbine, spinning it, which in … Premium Membership is now 50% off! The produced electricity will be Step up or Stepdown through a transformer and later on it will supply to the domestic and industrial applications. At the end of its passage down the pipes, the falling water causes turbines to rotate. An impoundment facility, typically a large hydropower system, uses a dam to store river water in a reservoir. Most of its hydroelectric dams are concentrated in the Southeast and the South, the areas that consume the vast majority of power in Brazil;…, Hydroelectric development has been immense in the United States and Canada. These are linked to such Great Lakes–St.…. Falling water is one of the three principal sources of energy used to generate electric power, the other two being fossil fuels and nuclear fuels. Reading Time: 2 minutes. Where the river flows in a narrow steep gorge, the powerhouse may be located within the dam itself. Let us know if you have suggestions to improve this article (requires login). of the water drives the turbine and consequently, the generator gets driven. This article was most recently revised and updated by, https://www.britannica.com/science/hydroelectric-power, National Geographic - Environment - Hydropower. Construction of Hydroelectric Power Plant: Applications of Hydroelectric Power Plant: By the usage of the hydropower plant, environmental pollution is almost zero. In certain coastal areas, such as the Rance River estuary in Brittany, France, hydroelectric power plants have been constructed to take advantage of the rise and fall of tides. China’s extensive river network and mountainous terrain provide ample potential for the production of hydroelectric power. Some large hydro sites that are remote from load centres may be sufficiently attractive to justify the long high-voltage transmission lines. Hydroelectric power, also called hydropower, electricity produced from generators driven by turbines that convert the potential energy of falling or fast-flowing water into mechanical energy.

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