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// Example 9.5
// Determine (a) Bus frequency (b) Load on each machine
// Page 360
clc;
clear;
close;
// Given data
Padd=720; // Additional load connected
GD=0.0008; // Governor droop
f=60.2; // Frequency of machine
Pbus=900; // Bus load
// (a) Bus frequency
deltaPa=Padd/2;
deltaPb=deltaPa; // Since both machines have identical governor drops
deltaF=GD*deltaPa; // Change in frequency
Fbus=f-deltaF;
// (b) Load on each machine
Pa=(2/3)*Pbus+deltaPa; // Load on machine A
Pb=(1/3)*Pbus+deltaPb; // Load on machine B
// Display result on command window
printf("\n Bus frequency = %0.2f Hz ",Fbus);
printf("\n Load on machine A = %0.0f kW",Pa);
printf("\n Load on machine B = %0.0f kW",Pb);
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