Synchronized measurement based estimation of inter-area electromechanical modes using the Ibrahim time domain method.

Highlights: [•] The Ibrahim time domain (ITD) method is able to identify the frequencies, damping and mode shapes of the interarea modes. [•] A zero-phase low-pass filter will greatly improve the performance of the ITD method in the presence of measurement noise. [•] The ITD method is much faster than the stochastic subspace identification (SSI) method in estimating interarea modes. [•] When the input ring-downs are contaminated by ambient noise, the ITD method performs better than the SSI method. [•] The ITD method may still give quite acceptable estimation results when only limited input signals are available. [ABSTRACT FROM AUTHOR]