Different Levels Of Voltages For Generation, Transmission And Distribution:
- The generation voltage is upto 30 KV AC rms (line to line).
- The long distance high power transmission is by EHVAC lines 220 kV,
400 kV & 760 kV Ac. In special cases, HVDC line is preffered. The rated
voltages of HVDC lines are ±250 kV, ± 400 kV, ± 500 kV & ± 600 kV.
- The backbone transmission system is done by EHV AC transmission lines
(400 kV AC & 200 kV AC).
- Distribution is at lower AC voltage between 132 kV AC and 3.3 kV AC.
- Utilization is at the low voltages upto 1kV and medium voltage upto 11 kV.
- The industrial substations receive power at distribution voltage such as 3.3 kV
and step down it to 440 V AC. Larger industries receive power at 132 kV and
internal distribution at 3.3 kV to 440 volt AC.
gregorymasila answered the question on February 20, 2018 at 16:23