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Diffstat (limited to 'Working_Examples/83/CH5/EX5.10/example_5_10.sce')
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1 files changed, 39 insertions, 0 deletions
diff --git a/Working_Examples/83/CH5/EX5.10/example_5_10.sce b/Working_Examples/83/CH5/EX5.10/example_5_10.sce new file mode 100755 index 0000000..af6af96 --- /dev/null +++ b/Working_Examples/83/CH5/EX5.10/example_5_10.sce @@ -0,0 +1,39 @@ +//Chapter 5 +//Example 5.10 +//page 170 +//To determine the MVA rating of the shunt reactor +clear;clc; +v=275; +l=400; +R=0.035*l; +X=2*%pi*50*1.1*l*10^-3; +Z=R+%i*X; +Y=2*%pi*50*0.012*10^-6*l*%i; +A=1+(Y*Z/2); +B=Z; +Vs=275; +Vr=275; +r=(Vs*Vr)/abs(B); +Ce=abs(A/B)*Vr^2; +printf('Radius of the receiving-end circle=%0.1f MVA\n\n',r); +printf('Location of the center of receiving-end circle= %0.1f MVA\n\n',Ce); +printf('From the graph, 55 MVA shunt reactor is required\n\n'); +theta=180+82.5; +x=-75:0.01:450; +a=Ce*cosd(theta); //to draw the circle +b=Ce*sind(theta); +y=sqrt(r^2-(x-a)^2)+b; +x1=a:0.001:0; +y1=tand(theta)*x1; +plot(x,y,x1,y1); +title('Circle diagram for example 5.10'); +xlabel('MW'); +ylabel('MVAR'); +plot(a,b,'markersize',150); +xgrid(2) +set(gca(),"grid",[0,0]) +get("current_axes"); +xstring (-75,25,'55 MVAR'); +xstring(-75,-25,'83.5 deg'); +xstring(-20,-300,'487.6 MVA'); +xstring(300,-100,'544.3 MVA');
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