Matpower-Based Harmonic Power Flow Analysis for Power Systems With Passive Power Filters

As an open-source MATLAB-based power system simulation package, MATPOWER has been proven to have an adjustable feature that supports modifications to solve specific problems in power systems. Since it was first released, the MATPOWER framework has been widely used for solving steady-state electric power scheduling problems. However, a modification to solve a harmonic power flow (HPF) using MATPOWER has not been launched yet. This paper presents modification procedures to customize the network component models and problem formulations in MATPOWER for the HPF study. The modification procedures can be used to evaluate the bus admittance matrix, bus voltages, and current sources for any harmonic order. Moreover, the modified MATPOWER can evaluate the passive power filter (PPF) installation to improve the harmonic distortion in power systems. The simulation results were satisfactory, indicating that the modification enabled solving problems in both fundamental and harmonic power flows.