Online Thévenin Equivalent Impedance Measuring System

Power networks are often affected by conditions that rely upon the steady state of current and the system voltage. This paper deals with an overview of the Power System State Estimation, the system power flow, and the active method of determining the grid impedance through the double current injection technique without creating line disturbance in the network. The method deals with the concepts of both balanced and unbalanced load in power systems. This method which is simple to understand and obey Kirchoff's law was simulated using MATLAB/Simulink to determine the line parameters of the system.