Nowadays Electrical engineers are involved in projects from design and conceptualization to maintenance of substations. Because of the wide range of industries using electrical engineers, many engineers specialize in some of the sub-discipline of electrical engineering. Depending on background and expertise, projects can include systems such as energy transmission and distribution, protection and control etc.
The main purpose of Substation is to transform voltage level either from high to low or low to high. It acts as connecting link between generating Station and consumers. Power transformers are being used to change voltage level at substation. 33/11 kv Substation is used to step down voltage from 33 kv to 11kv and the output is connected to feeder for local utility. The primary voltage for power transformer at 33/11kv substation is 33 kv which is fed from secondary transmission line. The output of power transformer 11kv is given as supply to medium and large consumers especially industries.