During the transmission, the generated electric power is delivered after stepping up to hundreds of thousands or even more voltages by transformers.
In that case since P = I*V, increasing V reduces I in the secondary of the transformer.
The reason given is to reduce Ploss = I^2*R losses. Here I decreases so the power loss.
Is that the real reason to step up?
I'm asking because we can write the power loss equation as:
Ploss = V^2/R
Or if we use both I and V in the power equation:
Ploss = (V/R)*I
It seems like if we step up the voltage I decreases but V increases. How about the power loss?
Does the power loss decrease? Or the real reason to step-up the voltage is to reduce the cross section area of the transmission lines significantly?