INVESTIGADORES
MARCHI Pablo Gabriel
artículos
Título:
Non-Stationary Power System Forced Oscillation Analysis using Synchrosqueezing Transform
Autor/es:
PABLO GILL ESTEVEZ; PABLO MARCHI; DRA. CECILIA G. GALARZA; MARCELO ELIZONDO
Revista:
IEEE TRANSACTIONS ON POWER SYSTEMS
Editorial:
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Referencias:
Lugar: New York; Año: 2021
ISSN:
0885-8950
Resumen:
Non-stationary forced oscillations (FOs) have been observed in power system operations. However, most detection methods assume that the frequency of FOs is stationary. In this paper, we present a methodology for the analysis of nonstationary FOs. Firstly, Fourier synchrosqueezing transform (FSST) is used to provide a concentrated time-frequency representation of the signals that allows identification and retrieval of non-stationary signal components. To continue, the Dissipating Energy Flow (DEF) method is applied to the extracted components to locate the source of forced oscillations. The methodology is tested using simulated as well as real PMU data. The results show that the proposed FSST-based signal decomposition provides a systematic framework for the application of DEF Method to non-stationary FOs.