Load flow problem formulation as a holomorphic embedding method

Abstract

This paper presents the description and results of the computational implementation of the Holomorphic Embedding Load Flow Method (HELM) basic formulation. The approach is a non-iterative, but recursive technique proposed as an alternative method for solving the traditional power flow problem (PFP). The main task of the method is the computation of power series coefficients which are used to generate rational function obtained from Pade approximants. These approximants are employed to determine the PFP solution. The basic computational implementation of the method is carried out by exploiting the same input/output data structure of the well-known MATPOWER software. This software is an open source tool developed in Matlab and so adequate for implementation of new contributions related to the PFP. Experiments and results for eight power systems demonstrate the efficacy of the proposed PFP tool, when compared with the Newton-Raphson method.