Non-Stationary Power System Forced Oscillation Analysis Using Synchrosqueezing Transform

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 analysis non-stationary FOs. Firstly, Fourier synchrosqueezing transform (FSST) used to provide concentrated time-frequency representation signals allows identification and retrieval signal components. To continue, Dissipating Energy Flow (DEF) method applied extracted components locate source oscillations. The tested using simulated as well real PMU data. results show proposed FSST-based decomposition provides systematic framework application DEF Method