U3AOS3 Topic 7: Transmission

Transmitting electricity requires consideration of power loss.

Transmitting electricity at high currents wastes a lot of power that can otherwise be used.

 

The key to transmitting electricity is transmitting it at high voltages and low currents using step up transformers.

The first part in calculating power loss requires calculating how much the voltage has dropped.

Vdrop=Iline∗RlineV_{drop} = I_{line}* R_{line}

Voltage drops across power lines

 

Calculating the power lost in the power lines is calculated through:

 Ploss=(Iline)2∗Rline=Iline∗VdropP_{loss} = (I_{line})^2* R_{line} = I_{line}*V_{drop}

Using these 2 formulas, the amount of electricity being provided to the consumer can be calculated and adjusted to meet requirements.



Source: (JavaLab - Transmitting Electricity at High Voltages, https://javalab.org/en/power-transmission/)