As we know that Substation serve as sources of energy supply for the local areas of distribution in which these are locates. Substation can be divided into three parts on the basis of their Nature of Duties. They are briefly describes below:
1. Step- Up or Primary Substations;
Primary Substations are usually associated with generating stations. As we are familiar that the generation of electric power is basically in low voltage but we have to transfer electric power in High Voltage due to many reasons like low voltage loss, high efficiency, high reliability and many more. So in this substation generated voltage which is usually low i.e 3.3 kv, 6.6 KV, 11 Kv or 33 Kv is steeped up to primary transmission voltage so that huge blocks of power can be transmitted over long distance to the load centers economically.
2. Primary Grid Substations:
Primary Grid Substations are located at suitable load centers along the primary transmission lines. The primary transmission voltage is stepped down to different suitable secondary voltage. The secondary transmission lines are carried over to the secondary substations situated at the load centers where the voltage is further stepped down to sub- transmission or primary distribution voltages.
3. Step-Down or Distribution Substations;
Distribution Substation are located at the load centers where the sub-transmission or primary distribution voltage is stepped down to secondary distribution voltage (400/240 V ). This substation feed the consumers through distribution network and service lines.
1. Step- Up or Primary Substations;
Primary Substations are usually associated with generating stations. As we are familiar that the generation of electric power is basically in low voltage but we have to transfer electric power in High Voltage due to many reasons like low voltage loss, high efficiency, high reliability and many more. So in this substation generated voltage which is usually low i.e 3.3 kv, 6.6 KV, 11 Kv or 33 Kv is steeped up to primary transmission voltage so that huge blocks of power can be transmitted over long distance to the load centers economically.
2. Primary Grid Substations:
Primary Grid Substations are located at suitable load centers along the primary transmission lines. The primary transmission voltage is stepped down to different suitable secondary voltage. The secondary transmission lines are carried over to the secondary substations situated at the load centers where the voltage is further stepped down to sub- transmission or primary distribution voltages.
3. Step-Down or Distribution Substations;
Distribution Substation are located at the load centers where the sub-transmission or primary distribution voltage is stepped down to secondary distribution voltage (400/240 V ). This substation feed the consumers through distribution network and service lines.