Nonlinear Koopman Modes and Coherency Identification of Coupled Swing Dynamics

摘要: We perform modal analysis of short-term swing dynamics in multi-machine power systems. The is based on the so-called Koopman operator, a linear, infinite-dimensional operator that defined for any nonlinear dynamical system and captures full information system. Modes derived through spectral called modes, provide extension linear oscillatory modes. Computation modes extracts single-frequency, spatial embedded non-stationary data short-term, dynamics, it provides novel technique identification coherent swings machines.