15-07-2017, 01:45 PM
Large power plants are used for the economic generation of energy. The capacities of individual generator sets have recently risen. In many countries generators are manufactured in the range of 10 MW, 210 MW and 500 MW. The generating station is now not necessarily located in the cargo centers. In fact other factors such as the availability of fuel and water play a more dominant role in the selection of sites for thermal power plants. Hydroelectric stations are obviously only found at places where water is available in sufficient head. An extensive network of transmission systems has been created so that the energy generated in a station can be fed to the network system and can be distributed over large areas and number of states. The transmission and distribution system comprises a network of three-phase circuits with transformation and / or switching substations at the various junctions.
The electric power is generated in different power plants. These plants are not necessarily located in the load center. During the construction of the generation station, the number of factors must be considered from the economic point of view. These factors may not be readily available in the cargo center; Therefore the generating stations are not normally located very close to the load center. The load center is the place where maximum power is consumed. Therefore, there must be some means by which the generated power must be transmitted to the load center. The electric transmission system is the means of transmitting the energy from the generation station to different load centers.