eigen.txt

This is a matlab code for right eigen vector and left eigen vector for power system

% The name of the M-file: eigeb_vec 
% This M-file creates a figure window and plots the absolute magnitudes of 
%left and right eigenvector of the load flow Jacobian matrix at the point  
% of collapse. 
 
figure(grph_fig); 
set(grph_fig,... 
   'NumberTitle','off',... 
   'Name','VST-Sensitivity and Remedial Information',... 
   'DefaultAxesPosition',[0.12 0.1 0.55 0.8],... 
   'Color',[0.7 0.8 0.9],... 
   'ReSize','off'); 
 
%Plot the right eigenvector 
subplot(2,1,1); 
stem(abs(vpoc),'r'); 
title(['Right and Left Eigenvector:',CurrentSystem]); 
ylabel('Null Space Vector'); 
xlabel('State Variables'); 
grid; 
 
%plot the left eigenvector 
subplot(2,1,2); 
stem(abs(wpoc),'r'); 
ylabel('Remedial Action Vector'); 
xlabel('State Variables'); 
grid; 
gcontrol1;