A Novel Subspace Decomposition with Rotational Invariance Technique to Estimate Low-Frequency Oscillatory Modes of the Power Grid

Table 7

Statistical analysis of the IAOs for sixteen-machine sixty-eight bus IEEE system using MKLT-TLS-ESPRIT at SNR = 30 dB.

SNR = 30 dB	Frequency (Hz)			Attenuation factor
	True	Mean	Std. dev.	True	Mean	Std. dev.
Mode-1	0.3893	0.3899	0.00018	−0.1200	−0.1339	0.0039
Mode-2	0.5160	0.4971	0.00013	−0.2100	−0.2104	0.0041
Mode-3	0.5893	0.6693	0.00018	−0.1900	−0.1976	0.0054
Mode-4	0.7923	0.7804	0.00015	−0.2300	−0.2187	0.0017