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// Example 12.5
// Computation of (a) New bus voltage (b) Current supplied by each generator
//Page No. 500
clc;
clear;
close;
// Given data
p1=300000; // Rated power in generator A
p2=400000; // Rated power in generator B
v=250; // Rated voltage in machine
p3=350000; // Rated power in generator C
Ibnew=2500;
// (a) New bus voltage
IArated=p1/v; // Rated current in generator A
IBrated=p2/v; // Rated current in generator B
IBorig=p3/v; // Original bus current
IbDelta=Ibnew-IBorig; // Current difference
DelVbus=IbDelta/(160+128); // Voltage difference
// (b) Current supplied by each generator
DelIA=160*DelVbus; // Generator A current difference
DelIB=128*DelVbus; // Generator A current difference
Vbus=v-DelVbus; // Voltage across the bus
IA=700+DelIA; // Current in generator A
IB=700+DelIB; // Current in generator B
Loading= (IA-IArated)*100/IArated;
// Display result on command window
printf("\n New bus voltage = %0.2f V ",DelVbus);
printf("\n Current supplied by generator A = %0.0f A ",IA);
printf("\n Current supplied by generator B = %0.0f A ",IB);
printf("\n Macine A is overloaded by %0.1f Percent ",Loading);
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