Parameter tracking techniques applied to harmonic equivalent circuit identification in power systems

The paper concerns the application of different parameter tracking techniques to the on-line identification of harmonic equivalent circuits in power systems. A description of the methods and a complete discussion of the implementation issues are included. Particular attention is paid to assure good parameter tracking as well as to avoid the estimator wind-up. Numerical applications referred to a simulated case study are presented to compare the different features of the tracking algorithms in response to parameter variations.