Research Article
A Novel Subspace Decomposition with Rotational Invariance Technique to Estimate Low-Frequency Oscillatory Modes of the Power Grid
Table 1
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 | 5.7577 | 0.4289 | 3.3151 | 1.6238 | −0.0216 | 2.6367 | | QR-TLS-ESPRIT | 1.4825 | 0.3845 | 2.1978 | 5.6437 | −0.1593 | 3.1851 | | KLT-TLS-ESPRIT [12] | 1.3823 | 0.4022 | 1.9107 | 3.3461 | −0.0997 | 1.1196 | | Data-SSI | 1.3893 | 0.3958 | 7.7601 | 2.7434 | −0.1276 | 7.5262 | | MKLT-TLS-ESPRIT | 8.3647 | 0.4001 | 6.9968 | 2.1123 | −0.0701 | 4.4618 |
|
|
