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//Book - Power System: Analysis & Design 5th Edition
//Authors - J. Duncan Glover, Mulukutla S. Sarma, and Thomas J. Overbye
//Chapter - 8 ; Example 8.4
//Scilab Version - 6.0.0 ; OS - Windows
clc;
clear;
Zy = (3+(%i*4)); //Y load impedance per phase
Xn = 2; //inductive reactance in ohm per phase
Xc = -%i*30; //capacitor bank reactance in ohm per phase
Zn = %i*2 //neutral impedance in ohm per phase
Zdel = Xc/3;
Z0 = Zy+(3*Zn); //zero load sequence impedane in ohm
Z1 = 1/(1/Zy+1/Zdel); //positive load sequence impedane in ohm
Z2 =Z1; //negativa load sequence impedane in ohm
printf('\nThe zero load sequence impedance Z0 is %0.4f + %0.4fi ohm',real(Z0), imag(Z0));
printf('\nThe amplitude of positive load sequence impedance Z1 is %.4f ohm and its angle is %.4f degree ',abs(Z1), atand(imag(Z1), real(Z1)));
printf('\nThe amplitude of negative load sequence impedance Z2 is %.4f ohm and its angle is %.4f degree ',abs(Z2), atand(imag(Z2), real(Z2)));
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