Identification of Linear Power System Models Using Probing Signals

Presenter Information

Romel Angel Cárdenas Javier, National Autonomous University of MexicoFollow
Francisco Alexander Zelaya Arrazabal, National Autonomous University of MexicoFollow
Mario Roberto Arrieta Paternina, National Autonomous University of MexicoFollow
Felipe Wilches-Bernal, Sandia National LabsFollow

Location

Online

Event Website

https://hicss.hawaii.edu/

Start Date

4-1-2021 12:00 AM

End Date

9-1-2021 12:00 AM

Description

This paper compares the accuracy of two methods to identify a linear representation of a power system: the traditional Eigensystem Realization Algorithm (ERA) and the Loewner Interpolation Method (LIM). ERA is based on time domain data obtained using exponential chirp probing signals and LIM system identification method is based on frequency domain data obtained using sinusoidal probing signals. The ERA and LIM methods are evaluated with the noise produced by the nonlinear characteristics of the system, these characteristics are caused by increasing the amplitude of the applied probing signal. The test systems used are: the two-area Kundur system and a reduced order representation of the Northeastern portion of the North American Eastern Interconnection. The results show that the LIM method provides a more accurate identification than the ERA method.