AIM: To find load flow solution of the given power system using Gauss-Seidel method theoretically for one iteration and obtain full solution using MATLAB. PROBLEM: For the sample power system shown below, the generators are connected at all the four buses, while loads are at buses 2 and 3. Values of real and reactive powers are listed in the table. All buses other than the slack are PQ type. Assuming a flat voltage start, find the voltages and bus angles at the three buses at the end of first GS iteration. Input data: 3 Figure: a simple 4-bus power system Bus 1 2 3 4 P, pu 0.5 -1.0 0.3 Q, pu -0.2 0.5 -0.1 V, pu 1.04 20 Remarks Slack bus PQ bus PQ bus PQ bus YBUS = [+3-j9 -2.00+ j6 -2+j6 +3.666-j11 -1+j3 -0.666+j2 0 -1.00+ j3 -1.00+ j3 -0.666+j2 +3.666-j11 -2.00+ j6 0 -1+j3 -2+j6 +3-j9] Write a MATLAB program to solve the load flow equations of theabove sample power system by using Gauss-Seidel method.