Fundamental and Harmonic Synchrophasors Estimation using Modified Taylor-Kalman Filter

Liu J;Ni F;PEGORARO, PAOLO ATTILIO;Ponci F;Monti A;MUSCAS, CARLO

2012-01-01

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Abstract

This paper investigates the possibility of measuring fundamental and harmonic synchrophasors as well as the signal frequency using a modified Taylor Kaiman filter (TKF). In a previous paper, a modified TKF was proposed to track the complex trajectory of dynamic phasors of the fundamental frequency component based on an improved dynamic model under non-steady state conditions. In this paper, we extend the model of the modified TKF to include harmonics and to allow a better estimation of the phasor in presence of distorted signals. The new method also allows to estimate frequency and time varying harmonic components.