Abstract: Load flow could also be a valuable tool employed by power engineers for planning, to work out the sole operation for an influence system and exchange of power between utility companies. To possess an efficient operating power grid, it is necessary to work out which method is suitable and efficient for the system’s load flow analysis. An influence flow analysis method may take an extended time and thus prevent achieving an accurate result in an influence flow solution because of continuous changes in power demand and generations. This paper presents an analysis of the load flow problem in power grid preparation studies. The numerical methods: Gauss-Seidel, Newton-Raphson and Fast Decoupled methods were compared for an influence flow analysis solution. I ran a simulation using MATLAB for test cases of IEEE 9-Bus, IEEE 30-Bus and IEEE 57-Bus systems. I compared the simulation results for kind of iteration, computational time, tolerance value and convergence. The compared results show that Newton-Raphson is the foremost reliable method because it is the slightest number of iterations and converges faster.

Keywords: Load Flow, Bus, Gauss-Seidel, Newton-Raphson, Fast Decoupled, Voltage Magnitude, Voltage Angle, Active Power, Reactive Power, Iteration, Convergence

| DOI: 10.17148/IJIREEICE.2021.9734