There are approximately two types of hydroelectric power plants. One is hydraulic type, which means building a dam to raise the height of the water. Under the action of hydraulic pressure, water enters the lower inlet culvert, drives the turbine blades, and drives the hydroelectric power plants. the generator to produce electricity, the higher the water height of this hydroelectric plant, the greater the electricity production. The other type is a tubular hydroelectric plant, which places the turbine and generator horizontally in the flow of a river like an airplane engine, and uses the large flow of water to produce electricity. This type of hydropower station does not need to build a hydropower station. dam, and is used in areas where the water height is not high but the flow is significant on the large river.
Both power plants usethe flow of water to drive the turbine blades to turn the turbine. The large shaft of the turbine is connected to the generator rotor, so the generator rotor also rotates and DC excitation. energy is injected into the generator rotor. A rotating magnetic field is established when this rotating magnetic field passes through the stator winding of the generator, an electric potential is induced in the stator winding and electricity is generated.
What are the water guiding fins of a hydroelectric generator?
They all use the principle of hydroelectric power generation.
1. The upstream of the Three Gorges Dam flows into the reservoir and is stored in the reservoir when power generation is needed, the water flows through the turbine downstream. The kinetic energy of the water flow is converted. in the mechanical energy of the turbine. The turbine then drives the generatorator so that it turns and generates electricity. The change in the magnetic field between the rotor and stator of the machine produces electromagnetic induction, thereby generating electrical energy.
2. The waterwheel blades flowing into the water turbine generator in the Baihetan Dam reservoir. Due to the impact of water flow and the action of gravity, the waterwheel begins to rotate during than water. The wheel turns, the water wheel generates electricity. The rotor of the machine also rotates, converting mechanical energy into electrical energy through the principle of electromagnetic induction, and finally transmitting it to the power grid.
Turbine guide vanes include fixed guide vanes and movable guide vanes.
The guide vanes are attached to the seat ring to generate velocity circulation for water flowing from the volute. At the same time, theThese fixed guides support part of the weight of the unit.
The movable guide vane is installed between the lower ring and the upper cover (mixed flow type) to regulate the water flow. Thus adjusting the power of the turbine and maintaining the speed of the unit.