Substation serve as sources of energy supply for the local areas of distribution in which these are located. Their main functions are to receive energy transmitted at high voltage from the generating stations reduce the voltage to a value appropriate for local distribution and provide facilities for switching. Some are:
1. Simply Switching Stations
2. Converting Substation
3. Points for safety devices
4. Feeders
5. Synchronous Condensers
6. Street lighting equipment
Classification of Substation can be done by different criteria, which are describes below :
1. According to Nature of Duties
i. Step-Up or Primary Substation
ii. Primary Grid Substation
iii. Step- Down or Distribution Substations
2. According to Service Rendered
i. Transformer Substations
ii. Switching Substations
iii. Converting Substations
3. According to Operating Voltage
i. High Voltage Substation
ii. Extra High Voltage Substation
iii. Ultra High Voltage Substation
4. According to Importance
i. Grid Substations
ii. Tower Substations
5. According to Design
i. Indoor Substations
ii. Outdoor Substations
a. Pole Mounted Substations
b. Foundation Mounted Substations.
1. Simply Switching Stations
2. Converting Substation
3. Points for safety devices
4. Feeders
5. Synchronous Condensers
6. Street lighting equipment
Classification of Substation can be done by different criteria, which are describes below :
1. According to Nature of Duties
i. Step-Up or Primary Substation
ii. Primary Grid Substation
iii. Step- Down or Distribution Substations
2. According to Service Rendered
i. Transformer Substations
ii. Switching Substations
iii. Converting Substations
3. According to Operating Voltage
i. High Voltage Substation
ii. Extra High Voltage Substation
iii. Ultra High Voltage Substation
4. According to Importance
i. Grid Substations
ii. Tower Substations
5. According to Design
i. Indoor Substations
ii. Outdoor Substations
a. Pole Mounted Substations
b. Foundation Mounted Substations.