A transposed overhead transmission line has following parameters:
Self reactance, Xs=0.5Ω/km;
Mutual reactance, Xm=0.2Ω/km
The value of positive sequence reactance x1 and zero sequence reactance x0 respectively for above mentioned line in Ω/km will be
=0.5−0.2
=0.3Ω/km
Zero sequence reactance, x0=Xs+2Xm
=0.5+0.2×2
=0.9Ω/km