Algorithm for online estimation of power system parameters

Abstract

Power system parameters are having great contribution in the operating, monitoring and controlling of electric device. Frequency and harmonics are the two vital parameters which influence different relay functionality of power system. This study was made to estimate the frequency and harmonics of measuring voltage or current signal in presence of random noise and distortion. Here we are using complex least mean square (LMS), nonlinear least square (LS) and recursive least square (RLS) algorithm for measuring the parameter from the distorted voltage signal. The performances of these algorithms are studied through simulation and the experimental setup has been made to evaluate the robustness of the above algorithms.