PMU-based linear and nonlinear black-box modelling of power systems

This paper presents black-box modeling of power systems using both linear and nonlinear methods. These methods contain wavelet-based and Hammerstein-Wiener as nonlinear methods and state-space as a linear method. In this study, the power system has been considered as a multi input multi output black-box model while the field voltage of synchronous generators and the voltage of buses have been considered as input and output signals, respectively. Having the black-box model of power systems is useful to design controllers such as automatic voltage regulator (AVR), power system stabilizer (PSS), etc. Modeling procedure has been applied to IEEE 14-bus test case power system and required signals have been provided by phasor measurement units (PMUs). The simulation results show the high precision of the proposed scheme.