Electricity or the flow of electric power is the secondary source of energy that is generated by the conversion of primary energy sources such as wind, fossil, nuclear or solar. The constant supply of electric power is critical to meet the everyday requirements of office or home. The energy department works to prevent any form of cyber or physical attack on the grids.
Thus electric power is generated through the conversion of different types of energy such as thermal, chemical and mechanical. This form of energy is essential for a variety of uses such as computer operation, lighting, and entertainment applications.
How is the electric power characterized?
The electric power is described based on the flow or the current of charge. It may also be dependent on the potential of charge to deliver energy. Any value of electric power may be generated easily with the combination of both voltage and current values.
In direct current flow, the charge always progresses in the same direction; however, in case of alternating current, the charge moves back and forth in the device as well as the wires to which the device is connected.
There are some specific types of applications for which both the types of current can be used. The alternating current or AC is widely available as it can be distributed and generated with greater efficiency. The direct current is mostly used for the industrial applications like electro- metallurgical procedures and electroplating processes.
A little about history!
If we look back in history, we can see that the large-scale production and distribution of electric power became a reality only after the invention of the electric generator. This was a device that worked based on the induction principle formulated by scientist Michael Faraday and Joseph Henry in 1831.
The first ever public power station using the electric generators came into operation from January 1882. By the first half of the 1890s, the world got its first ever AC generator which was made in the Lauffen power station situated in Germany.
Currently, there are two main sources for electric generators, and they are hydro and thermal. While hydroelectric power comes from the generators and turbines supported by the energy of falling water, other forms of electric energy come from generators driven by steam produced by nuclear reactor or burning of fossils.
The electric energy that is generated at the central power station is distributed to various substations or delivery points, from where it is further delivered to consumers. This is made possible by an extensive and complex network of high voltage power lines. These also include overhead wires, underground and underwater cables. Thus, electric energy reaches residential and commercial areas to be used for lighting, cooking, heating and cooling purposes.