Coal-fired power plants are called power plants. Coal-fired power plants use coal, oil and natural gas as fuels to generate electricity. The basic process is that the boiler water burned by fuel is heated into steam, and the chemical energy of fuel is converted into heat energy. The steam pressure drives the turbine to rotate, and the thermal energy is converted into mechanical energy, and then the turbine generator converts the mechanical energy into electrical energy.

Working principle of thermal power plant:

A, coal-fired power plants use coal as fuel, and the coal burns in the boiler, heating the water in the boiler to generate steam, and then the steam enters the turbine from the main steam valve and regulating valve at a certain temperature and pressure in the boiler.

Secondly, in turn, through a series of annular nozzles to install grids and dynamic cascades to expand power, heat energy is converted into mechanical energy to drive the turbine rotor to rotate, and the generator is driven to generate electricity through coupling.

Thirdly, after the exhaust steam of the steam turbine expands, the steam condenser condenses into water, then goes to the heater, and is heated into steam through the water to the boiler, and so on.

Fourthly, that is to say, the thermal energy of steam is first converted into kinetic energy in the nozzle grid, and then the kinetic energy is converted into mechanical energy in the moving cascade.

5. When the turbine rotates the rotor of the generator, the DC current provided by the generator excitation system is used as a magnetic field, and the rotor of the generator stator is magnetically induced to cut the rotation of the rotor, thereby transmitting power to the system. The working principle is the process of energy conversion, that is, heat energy-kinetic energy-mechanical energy-electric energy. Finally, the electricity came out.