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// To find the voltage at the load end of the transformer when load is drawing transformer current
clc;
I=20/2; //rated load current(hv side)
Z1=[.25,1.4]; //impedence of feeder (REAL,IMAGINERY)
Z2=[.82,1.02]; //impedence of transformer (REAL,IMAGINERY)
Z=Z1+Z2;
disp(Z,'Z(ohm)');
pf=.8;
phi=acosd(pf);
//from phasor diagram
R=Z(1);
X=Z(2);
AF=I*X*cosd(phi);
FE=I*R*sind(phi);
AE=AF-FE;
OA=2000;
OE=sqrt(OA^2-AE^2);
BD=I*R*cosd(phi);
DE=I*X*sind(phi);
BE=BD+DE;
V1=OE; disp(V1,'V1(V)');
V2=V1-BE; disp(V2,'V2(V)');
loadvol=V2/10; //referred to LV side
disp(loadvol,'load voltage(V)');
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