ｌｏａｄ Flow Analysis and Matlab Study in

Gauss-Seidel Method

Qi Liu, Liyi Wang

Department of Electrical Information, Shandong University of Science and Technology, Jinan, 250031, China

Abstract: In this study, Gauss-Seidel algorithm about iteration and flow analysis was used to determine the

critical values of each node and the power flows on each transmission line in a power system. This essay used

MATLAB to program and Power World to simulator, compared the theoretical values with the outcome in

simulation and discussed the iteration numbers in both method and found that the values were correct. The iteration

number of Gauss-Seidel algorithm in program under this certain system was 34 and it just cost

0.0246s, which proved Gauss-Seidel algorithm is valid and reliable.

Keywords: ｌｏａｄ flow; Gauss-seidel method; Matlab