Given

system configuration

Nominal system Vot tape $+-132kV$

Apparent power $=100$MVA

fault Location: Load Bus

System Components

Gr$$a parameters

short circuit capacity $=$ SOD MVA

sequence Reactances $=>x_0=x_1=x_2=0,2pu$

Resistance negligable

Generafor paramefers

Capaci$7$y $=250$MVA

Capacity $=250$MVA

sequence Reacfance $=>x^{\text{'}\text{'}}=0\mathrm{.}1pu,x_2=0\mathrm{.}15pu,x_0=0\mathrm{.}05pu$

$z_N=0\mathrm{.}02+j0\mathrm{.}03pu$

$3,$ Line Impedances

$z_{12}=0\mathrm{.}1+j0\mathrm{.}2$

$z_{23}=0\mathrm{.}15+j0\mathrm{.}25$

$z_{13}=0\mathrm{.}2+j0\mathrm{.}3$

$z_F=0\mathrm{.}01+j0\mathrm{.}02$

$(7)$ Determine and Calculate fault curvents for

a$)$ single line to ground $($SLG$)$ fault.

b$)$ Line to line $($LL$)$ fault.

c$)$ Calculate phase voltapes at the Load Bus dunif each fautt