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Preconditioned linear solver based on Broyden method for the power flow problem in power systems

This paper presents an alternative procedure for solution of the linear sub-problem that arises in solving the load flow problem in electric power systems. The procedure aims highlight a solver based on Broyden method which is used to solve iteratively a reordered and preconditioned linear system. To evaluate the performance of the solver, tests are performed on four power system models. The results are confronted with solvers based on the direct method (Gaussian elimination and LU) and the traditional iterative method GMRES. The superior performance of the proposed solver based on Broyden method is demonstrated comparing the CPU time required for each technique.