1, thermal power generation
The way to generate electricity by using the energy contained in fossil fuels such as coal, oil and natural gas is collectively called thermal power generation. According to the power generation mode, thermal power generation is divided into coal-fired turbine power generation, oil-fired turbine power generation, gas-steam combined cycle power generation and internal combustion engine power generation.
2. Water and electricity
Hydropower is a comprehensive engineering facility that converts water energy into electric energy, generally including reservoir and hydropower station diversion system, power station, electromechanical equipment, etc. It is formed by water retaining and drainage structure.
The high-level water in the reservoir flows into the workshop through the water diversion system to drive the hydro-generator set to generate electricity, and then is input into the power grid through the step-up transformer, switching station and transmission line.
3. Wind power
Wind power generation is to use wind power to drive the windmill blades to rotate, and then increase the speed through the speed reducer to promote the generator to generate electricity. According to the current windmill technology, power can be generated at a breeze speed of about three kilometers per second (the degree of breeze).
4. Nuclear energy
Nuclear power station is a new type of power station, which uses the energy contained in the nucleus to generate electric energy. Nuclear power plants can be roughly divided into two parts: one is a nuclear island that uses nuclear energy to generate steam, including reactor devices and primary loop systems; The other part is a conventional island that uses steam to generate electricity, including a turbine generator system.
Electricity in the eighteenth century:
1767, joseph priestley did an experiment and found that the power in the charged metal container was zero. From the experimental results, he accurately guessed that the attraction and gravitation between charged objects obey the same law.
1785, Charles Coulomb made an experiment with a torsion balance, which confirmed priestley's conjecture: the interaction force between two charged objects is inversely proportional to the square of the distance. He laid the basic law of static electricity, namely Coulomb's law. Here, the study of electricity has been promoted to a precise science.
In 179 1, luigi galvani found that if a frog is connected with an electrostatic generator to form a closed circuit, then the electrostatic generator is turned on, the frog's muscles will vibrate. This experiment shows that nerve cells rely on dielectrics to transmit signals to muscles. Therefore, he founded the academic field of bioelectricity.