Overhead Transmission Line

[joan271273]

I want to size (ampacity)of the conductor for an overhead transmission line at 115kV . For 37MW and then for 74MW. Is there like a "short" way of doing this just to get a "ballpark" type/size. [sig][/sig]

 

[jbartos]

Reference:
1. Fink D.G., Beaty H.W. "Standard Handbook for Electrical Engineers," 13th Edition, McGraw-Hill, Inc., page 461
37MW
37000kW/(sqrt3 x 115kV x 0.9PF x 0.95EFF) = 217.26 A
Aluninum Cable Code Word "Poppy"
AWG Size 1/0
235A at 40 Degree C conductor rise over 40 degree C ambient
74MW
74000kW/(sqrt3 x 115kV x 0.9PF x 0.95EFF) = 434.50 A
Aluninum Cable Code Word "Peony"
AWG size 300MCM
455A at 40 Degree C conductor rise over 40 degree C ambient [sig][/sig]