Estimation of Grid Harmonics in the Modern Electric Power Systems

摘要

This article describes some of the important harmonics estimation techniques. Performance of these techniques is evaluated and compared based on simulation results. It is shown that the ESPRIT is the most accurate technique amongst all, however, its high computational time restricts its application in on-line analysis purposes. The most widely used FFT technique provides fastest estimates. The accuracy is maintained within stipulated limits using interpolation and synchronization.