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Thursday, July 26, 2012

The Brief Introduction of Electric Power

The electric power is a kind of energy whose power is electric energy. It was invited in the 1870s. Its invention and application brought about the second high tide of industrialization. At the same time, the invention has been one of the three technological revolutions in the world. From then on, people's life has been changed by the science and technology. The large-scale electric power system in the 20th century is one of the most significant achievements in the scientific history of the human engineering. It is the power generation and consumption system that is made up of sections such as power generation, power transmission, power transformation, power distribution and power utilization. This system transforms the primary energy source in the nature into the electric power through the electric power unit. Then it supplies the electric power to the users through transmission, transformation and distribution.
There are a lot of kinds of ways of electric power generation. For example, it can be generated by the thermal power, solar energy, wind power, nuclear energy, hydropower and so on. every way has its own demerit and is not ideal. In the follow passage, they will be introduced in detail.

What comes first is thermal power generation. At present it is not a popular way, because it easily brings about the serious problems, such as smoke pollution, dust pollution and resource consumption. As for the hydro power, it is also not very ideal. It maybe submerges a great number of lands and even will result in the ecological damage. Besides, the water power resource in the country is limited and sometimes is influenced by the seasons. If the reservoir suffers from the breakdown, it is hard to image the result. The third way introduced in the article is wind power generation. It is a kind of noise and visual pollution. What's more, in order to build the wind power station, a lot of lands and forests will be occupied, which has a bad effect on the vegetation cover. Meanwhile, the power generation is still not stable and uncontrollable. Fourthly, the Electric power can be generated by the nuclear energy. In the normal situation, the nuclear power is quite clear. But once the nuclear leakage happens, the result is very terrible. A lot of radioactive materials will be released, which is very harmful for the environment and people. Besides, the cost of the nuclear energy station is very high. Therefore, how to choose the proper way for electric power generation is a very important issue. It is suggested for people to consider every aspect carefully.

Although now it is the internet era, the need for the electric power is still increasing, because we invite many electric products such as computer, household electrical appliances and so on. There is on doubt with the development of the new technology, the electric power has been the essential thing in our life.

 By Lily



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