Voltage stability index code

Hi, I am doing a project which require calculation of fast voltage stability index(FVSI). Please assist on how to come up with matlab code to calculate this index in power system

[Geoff Hayes]

weldon - I removed your tag since it was identical to your second sentence. See A Guide to Tags for how tags should be used.

Also, please discuss what you have tried with respect to this problem.

[SOMANAGOUDA AVATI]

did you get the code?

[NOOR habib]

Sir, i need the L-INDEX code too for my research work, thanks. [e-mail]

[zhibin zheng]

Sir, i need the L-INDEX code too for my research work, [e-mail]

[KAMALIKA BANERJEE]

I need the matlab codes to calculateLine voltage stability index

[KAMALIKA BANERJEE]

I also need L index and FVSI code for my research work

[sthiti Rout]

yes sir....can you please help me with L index code using IEEE 30 bus test system for my research work.... [e-mail]

[Kai Ling Hui]

Sir, i need the FVSI code too for my research work, thanks. [e-mail]

[Samson Ademola]

Please I need assistance on how to get FVSI on power flow analysis.this is my email [e-mail]

[Amulya Goyal]

need help in gvsm coding please help me

Answer 1

[pranay dattani]

i try to calculate the Line Stability Index, voltage Stability Index, linr stability factor

clc; clear all; close all; format compact;

Vs=0.9526+j*0.55; % Sending End Voltage in pu

Vsm=abs(Vs); % Magnitude of Sending End Voltage

Vsa=angle(Vs); % Angle of Sending End Voltage

Vr=1.00+j*0; % Receiving End Voltage in pu

Vrm=abs(Vr); % Magnitude of Receiving End Voltage

Vra=angle(Vr); % Angle of Receiving End Voltage

Delta=Vsa-Vra;

R=0.1; % Line Resistance

X=1; % Line Reactance

Z=R+j*X; % Line Impedance

Zm=abs(Z);

Theta=angle(Z);

Pr=1.2; % Receiving End Active Power

Qr=0.5; % Receiving End Reactive Power

Sr=Pr+j*Qr; % Receiving End Apprant Power

fprintf('Line Stability Index \n')

Lmn=(4*X*Qr)/((Vsm*sin(Theta-Delta))^2) % Line Stability Index

fprintf('Fast Voltage Stability Index \n')

FVSI=(4*(Zm^2)*Qr)/((Vsm^2)*X) % Fast Voltage Stability Index

fprintf('Line Stability Factor \n')

LQP=4*(X/(Vsm^2))*(Qr+(((Pr^2)*X)/(Vsm^2))) % Line Stability Factor

% Line is assumed to be lossless. So,Here the sending end power is equal

% To Reaceiving End Power

[Samson Ademola]

Please how can I input multiple values of R and X to calculate and give answers once instead of changing the values when getting the value of FVS and Lmn. Thanks

[oukennou aziz]

You can put them in the vector

Answer 2

[Aneel Kumar]

How to calculate voltage deviation of any standard IEEE Bus system by Matlab coding