Globalization has led to increase in power demand. In order to fulfill these huge demands, the modern times power substation layout has to be set up to cater for these huge demands. These power generating stations may be thermal, hydro-electric or atomic.Depending on the availability of various resources, then these stations are actually built on different locations.
These locations may not actually be nearer to the load stations where the actual consumption of power happens. Hence it is absolutely necessary to transmit these huge power blocks from the generating centers to their load centers. High and long voltage transmission networks are required for this purpose. It is very economical to transmit power at high voltages however, power distribution is done at lower voltage levels as per the consumers specifications. To maintain these types of voltage levels as well as providing reliable stability, a number of switching and transformation stations have to be created in between consumer ends and generating stations. These switching and transformation stations are generally known as utility substations. Depending upon these purposes, the power substation layout may be classified as:
Step up substation, step down substation, primary step down substation, secondary step down substation, distribution substation, mining substation, mobile substation, indoor substation and underground substation.Just but to mention a few.