Load Flow Analysis-Gauss Seidel Method

EX.NO: DATE:

LOAD FLOW ANALYSIS USING GAUSS SEIDAL METHOD

AIM:

To perform load flow analysis using Gauss-Seidal method. THEORY:

The Gauss-Seidal method is an iteratie method for soling a set of  non-linear alge!rai" e#uations. $n this "ase% first we hae to assume all !uses as &' !uses instead of sla"( !us. The sla"( !us oltage is spe"ified. Then there are )n-*+ !us oltages starting alues whose magnitude and angles are assumed. The  pro"ess is then repeated for all the aria!les there!y "ompleting one iteration. The iteratie pro"ess is then repeated till the solution e"tor "onerges within  pres"ri!ed a""ura"y. a""ura"y. This This e#uation used to find the the !us oltages in all iteration is

,here (*% % /0000.n% (1i 2onergen"e in Gauss-Seidal method "an sometimes !e speeded up !y the use of  a""eleration fa"tor haing a re"ommended alue of *.3

ALGORITHM :

STE& *: 4ead the alue for num!er of !uses%5-!us% sla"( !us oltage% &p and 'p for load !uses and & p%6 p% ' pma7% ' pmin for generator !uses and num!er of iterations. STE& : Set the flat oltage profile *89 for all the !uses e7"ept sla"( !us. STE&/: 2al"ulate the alue of ' for &6 uses using

STE&;: 2he"( for the limits%if

% then

if 'p(8* Enter the sla"( !us oltage: *.= Enter the no of iterations: * $NAP 6APQE O 6OPTAGE ATE4 $TE4AT$ON* A4E: *.=

.;8.//i

.?3=-.//=i

RESULT:

Thus the load flow analysis was formed !y using Gauss-Seidal method.