# Inerpretation of voltage and current phasor in transmission line.

1. Jan 13, 2009

### yungman

I have been trying to interpretating the voltage and current phasors in transmission line. I want to verify with you guys/gals here what my understanding. I am using only the voltage phasor as an example. I separate phasor V(z) into V(z)+ and V(z)-. I put the load at z=0 and V(z=0) at +r axis( in blue color). I also use l=-z. My observations are:

1) The +ve and -ve voltage phasors are stationary for any given -$$\beta$$z or $$\beta$$l.
2) Different value of $$\beta$$l give different position of the two phasors.
3) The angle of the +ve and -ve phasor are $$\beta$$l and -$$\beta$$l resp.