Research Article
A Novel Subspace Decomposition with Rotational Invariance Technique to Estimate Low-Frequency Oscillatory Modes of the Power Grid
Table 3
Statistical analysis for RMP, QR-TLS-ESPRIT, KLT-TLS-ESPRIT, data-SSI, and MKLT-TLS-ESPRIT at SNR = 10 dB.
| | SNR = 10 dB | Frequency (Hz) | Attenuation factor | | Std. dev. | Mean | Variance | Std. dev. | Mean | Variance |
| | RMP | 1.2267 | 1.5105 | 1.5047 | 1.5478 | −0.0547 | 2.3956 | | QR-TLS-ESPRIT | 5.0381 | 1.4957 | 2.5382 | 5.9367 | −0.1901 | 3.5244 | | KLT-TLS-ESPRIT | 5.4368 | 1.5017 | 2.9558 | 6.3465 | −0.1283 | 4.0278 | | Data-SSI | 8.3643 | 1.4973 | 6.9961 | 9.9432 | −0.0796 | 9.8867 | | MKLT-TLS-ESPRIT | 3.8721 | 1.5001 | 1.4993 | 4.8643 | −0.1001 | 2.3661 |
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