Which transformation of energy occurs in a hydroelectric power plant?
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- Conventional hydroelectricity
A hydroelectric power plant is a plant that converts water energy into electrical energy, and the basic process of energy conversion is: water energy → mechanical energy → electrical energy.
The basic process of energy conversion is: water energy → mechanical energy → electrical energy.
Power plant: A plant that produces electrical energy and converts various primary energy sources into electrical energy.
- Hydroelectric power generation utilizes the flow of water with potential energy from rivers and lakes located at a high place to a low place to convert the potential energy contained therein into the kinetic energy of the turbine, and then uses the turbine as the prime mover to push the generator to produce electric energy. The use of water power (with a head) to promote hydraulic machinery (turbine) rotation, the water energy into mechanical energy, if the turbine connected to another kind of machinery (generator) with the turbine rotation can be issued to electricity, then the mechanical energy is transformed into electrical energy. Hydroelectric power generation is, in a sense, a process in which the potential energy of water is transformed into mechanical energy and then into electrical energy. Because of the low voltage of the power generated by the hydroelectric power plant, to be transmitted to users at a distance, it is necessary to increase the voltage through the transformer, and then by the overhead transmission lines to the user's centralized area of the substation, and finally reduced to the appropriate voltage for home users, factories and power equipment, and by the distribution lines to the various factories and homes.
- Power transformers, as a kind of key equipment, are widely used in power plants, substations, etc. And In the power system occupies an extremely important position. Transformer according to the magnetic circuit structure to points, there are single-phase and three-phase transformer; according to the relationship between the voltage conversion and adjustment, the transformer can generally be divided into four kinds: ordinary multi-winding transformer (double-winding, three-winding), autotransformer, on-load voltage regulator transformer and autocoupled on-load voltage regulator transformer. Hydropower plant transformer mainly includes excitation transformer, main transformer, plant transformer, etc., they are the main power equipment in the plant, usually excitation transformer, plant transformer for the ordinary dry-type double winding transformer, the main power transformer for the ordinary multi-winding transformer (double-winding, triple-winding, on-load / no-load regulation) transformer.
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