The new interval version of the magnitude Vector Fitting is proved valuable for multiband filter design and the fitting of noisy magnitude spectra.
This short communication introduces vector fitting for mode estimation from ringdown responses of power systems.
Vector Fitting is an effective technique for rational approximation of LTI systems.
The proposed method's performance is compared to the widely used vector fitting approach using four power system examples.
The LM method is shown to be comparable to vector fitting in terms of accuracy, stability and passivity.
The methodology is based on applying terminal transformer voltages as input parameters that could be provided by using the powerful black box vector fitting.
The grounding frequency behaviour is determined by using an accurate electromagnetic model and included in EMTP/ATP by means of an equivalent circuit derived from Vector Fitting technique.
This paper proposes a novel method, called Ringdown Time-Domain Vector Fitting (RTD-VF), for estimating electromechanical modes in interconnected power systems.
In this paper, magnitude Vector Fitting is modified to work on inequalities which the magnitude of the transfer function has to satisfy, instead of least squares approximation.
This paper proposes to use optimization by the damped Gauss Newton method to improve the accuracy of rational approximations calculated by three mainstream fitting techniques: Bode's asymptotic approximation, Sanathanan Koerner iteration, and vector fitting.
