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Why are different levels of voltages used for generation, transmission and distribution of electric power?

Why are different levels of voltages used for generation, transmission and
distribution of electric power?

Answers

gregory
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

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