Research Article
A Novel Subspace Decomposition with Rotational Invariance Technique to Estimate Low-Frequency Oscillatory Modes of the Power Grid
Table 4
Statistical analysis for RMP, QR-TLS-ESPRIT, KLT-TLS-ESPRIT, data-SSI, and MKLT-TLS-ESPRIT at SNR = 30 dB.
| | SNR = 30 dB | Frequency (Hz) | Attenuation factor | | Std. dev. | Mean | Variance | Std. dev. | Mean | Variance |
| | RMP | 9.7643 | 1.5098 | 9.5341 | 1.0328 | −0.0403 | 1.0667 | | QR-TLS-ESPRIT | 6.1631 | 1.4951 | 3.7983 | 2.8643 | −0.1914 | 8.2042 | | KLT-TLS-ESPRIT | 6.0531 | 1.5014 | 3.6640 | 3.6481 | −0.1254 | 1.3308 | | Data-SSI | 9.6289 | 1.4971 | 5.8200 | 1.1462 | −0.0915 | 1.3137 | | MKLT-TLS-ESPRIT | 5.8947 | 1.5001 | 3.4747 | 2.1847 | −0.1000 | 4.7729 |
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