Voltage Drop Caculation for AAAC/Over Head Conductor

Okay, let's see if you are watching for helpful responses.

First calculate the resistance of the entire length of the conductor.

The answer involves the total length of the wire and how much resistance it has per unit of length.

When you post the correct answer to this step (in the correct units) , someone (or I) will post the next step.

Hurry before we get distracted...

Let us, first, calculate the line current

I = 7500MW/ (1.732*33kV) = 131220 Amps=131.220kAmps = 1.3122*10⁵Amps

But there is a different values for AC & DC resistance, Let us assume AC & DC both are same

Let us calculate the Line losses in watt / km = R I² = 138.5*10^-3*1.3122²*10¹⁰

Total losses for 24km and 3 conductors = 24*3* 138.5*10^-3*1.3122²*10¹⁰

= 171704MW

Your selected Transmission Line losses are 171,704MW but you want to transmit a power of 7,500MW

How come your assumption and you want to calculate voltage drop for what?

Actually this is subject of Electrical Utility supplier's Design Section.

I want to give some suggestions and they are as flows:

1. High voltage Transmission is used to transmit power at low current hence low line losses.

2. For a particular Voltage and a particular length of transmission line, there is a limit of maximum power transmission depends up on SIL (Surge Impedance Loading) loading in MW. From there you will get L,C,R of the transmission lines. This is a subject of Power System Analysis.

3. If line is interconnected between two sub stations or Power stations, then you need to run LOAD FLOW Program to get the, MW loading of the line, voltage drop between two sub stations or Power plants and also program gives line losses.

4. This a big subject that is limited to Utility designers.