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+// Book - Power System: Analysis & Design 5th Edition

+// Authors - J. Duncan Glover, Mulukutla S. Sharma, Thomas J. Overbye

+// Chapter - 4 : Example 4.5

+// Scilab Version 6.0.0 : OS - Windows

+

+

+clc;

+clear;

+

+T = 795000;                                         // Size of the Conductor in Circular mils (cmil)

+S = 0.40;                                           // Spacing between Conductors in metre

+l = 10;                                             // Spacing between the Adjacent Conductors in metres

+f = 60;

+Xa4=101;                                            // Inductive reactance of Example 4.4 in Ohms

+

+r = 0.0375;                                         // Geometric Mean Radius at 60Hz in feet, from the table A.4

+Ds = r*(1/3.28);                                    // Solid Cylinderical Conductor value in metres

+Dsl = sqrt(Ds*S);                                   // For the two conductor bundle GMR in metres 

+Deq = nthroot([10*10*20], 3);                       // Eqivalent GMR of a Conductor in metres from Ex 4.4

+La = ((2*10^-7)*(log(Deq/Dsl))*(1000*200));         // Average Inductance of Phase a in Henry

+Xa = (2*%pi*f*La);                                  // Inductive Reactance of Phase a in Ohms

+

+dif=100-(Xa/Xa4)*100;

+

+printf('Average Inductance of Phase is  (La) = %0.3f  H', La);

+printf('\nInductive Reactance of Phase is  (Xa) = %0.1f  Ohm', Xa);

+printf('\nThe inductive reactance is %0.0f percentage less than that of example 4.4',dif );