Comparison between Load Flow Analysis Methods in Power System using MATLAB
Now these days load flow is a very important and fundamental tool for the analysis of any power systems and in the operations as well as planning stages. Certain applications, particularly in distribution automation and optimization of a power system, require repeated load flow solutions. In these applications it is very important to solve the load flow problem as efficiently as possible. Since the invention and widespread use of digital computers and many methods for solving the load flow problem have been developed. Most of the methods have "grown up" around transmission systems and, over the years, variations of the Newton method such as the fast decoupled method; have become the most widely used. Some of the methods based on the general meshed topology of a typical transmission system are also applicable to distribution systems which typically have a radial or tree structure. Specifically, we will compare the proposed method to the standard Newton Method, and the implicit Z bus Gauss method. Our goal is to develop a formulation and solutions algorithm for solving load flow in large 3 phase unbalanced systems which exploits the radial topological structure to reduce the number of equations and unknowns and the numerical structure by using Gauss Seidel Method, Newton Raphson Method and Fast Decoupled Method.