Models for Synchrophasor with Step Discontinuities in Magnitude and Phase, Their Parameter Estimation and Performance

Abstract

This work proposes an alternative method to assess the calibration of phasor measurements units (PMUs) under magnitude and phase step conditions. Two parametric mathematical models are used to represent the signal and an iterative numerical method is used to best fit the model parameters to the samples. This approach avoids the adjustment of time windows around the instant of the discontinuity. The estimated parameters can be used to calculate a reference phasor with an appropriate definition.