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Why Is Hydro Power Plant Not As Popular As Thermal Power Plant?
Author: source: date: 2020-06-01 11:11:30
Why is hydro power plant not as popular as thermal power plant?
Electricity is an energy source indispensable to modern civilization. With the progress and development of the times, the human demand for electricity is also increasing. So people began to explore new power generation technologies. With the development of science and technology, power generation technologies such as thermal power generation, hydroelectric power generation, wind power generation, tidal power generation, geothermal power generation, nuclear power generation, etc. have emerged one after another. But so far, thermal power generation is still the first in the world's proportion of global power generation.
Among the many power generation technologies, why can thermal power monopolize the entire head?
Thermal power generation is the use of fossil fuels (coal, oil, natural gas) or biomass fuels (plants, garbage), etc. to produce electrical energy through combustion. Boilers, steam turbines and generators are the main equipment for thermal power generation.
The boiler is the most basic energy conversion equipment. The fuel is converted into heat energy by burning the boiler, and the heat energy turns water into steam. The steam performs work through the blades on the steam turbine rotor, which drives the steam turbine rotor to rotate. The turbine rotor and the generator rotor are connected by a coupling. When the steam turbine rotor rotates at a constant speed, the generator rotor also rotates. Under the action of electromagnetic response, the generator generates current. The current generated in this way is transmitted to the power grid through the power transformation equipment, and the power grid supplies power to the users through the power distribution equipment. This is the basic principle and process of thermal power generation.
Compared with other types of power generation, thermal power generation has less investment, quick results, simple technology and easy scale production. It also has coal, petroleum and other raw materials that are rich in reserves and widely distributed. It is no wonder that this type of power generation has long dominated the various power generation methods.
Even in the 21st century, various emerging power generation technologies are gradually developing, but the installed capacity of thermal power generation in the world still accounts for about 65% of the total installed power capacity. In China, this ratio will remain at around 70% for a considerable period of time in the future.
According to the World Energy Agency's proportion of global power generation in 2018, fossil energy power generation accounted for 64%. Hydropower accounts for only 16%. Compared with the simple and quick results of thermal power generation technology, although hydropower generation technology is mature, but the hydropower station has certain requirements for the geographical environment, and the investment period is long, the amount is large, and once the construction is completed, it cannot be expanded. Promotion and application of hydropower.