Estimation of synchronous generator parameters from load rejection analytical responses

In the present paper, the decoupled property of the so-called hybrid model is used to derive time-variant analytical waveforms of the phase voltage and the field current following the load rejection test. In the proposed identification approach, these time-variant responses are successfully adjusted to actual data via asymptotic weighted least squares estimator (AWLSE) along with a Newton-type optimization algorithm to compute 4-pole 1.5-kVA, 208-V, and 60-Hz laboratory synchronous generator parameters.