The designated work for the students was the design of an EHV substation of 132KV / 33KV. The work was carried out under Prof. S. Pal, H.D.-EE dept., Techno India. Any sub-station that handles power to more than 33KV is called as an extra high-voltage substation by the rules implemented by the Indian government. The design process of an EHV substation begins with a very elementary job site selection and requirement estimation that includes capital and material. It is also necessary to take into account the civil aspects of a substation design. In India, about 75% of the electricity used is generated by thermal and nuclear power plants, 23% of most of the hydroelectric power station and 2% of renewable energy sources. The distribution system supplies power to the final consumer, while the transmission system connects between the generating stations and the distribution system through the transmission line. The entire network forms an electrical network and each electricity network across the country is interconnected, which facilitates uninterrupted supply.
Lightning arresters are the instrument that is used in incoming feeders so that to prevent high voltage entering the main station. This high voltage is very dangerous for the instruments used in the substation. Even the instruments are very expensive, so to avoid any damage they use lighting protectors. Lightning rods do not let lightning strike the station. If lightening occurs, the lightning rods remove the lightning and ground it. In any substation the main important is the protection that is made in the first place by these lightning rods. The lightning rods are connected to ground so that they can attract lightning to the ground. The lightning rod works with an angle of 30 ° to 45 ° making a cone.