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

<table class="table-group" id="tab5"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left" rowspan="2">Estimation algorithms</td><td class="align_center" colspan="2">Computational time (sec)</td></tr><tr class="thead"><td class="align_center">SNR = 30 dB</td><td class="align_center">SNR = 10 dB</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">RMP</td><td class="align_center">0.0089</td><td class="align_center">0.0091</td></tr><tr><td class="align_left">QR-TLS-ESPRIT</td><td class="align_center">0.0185</td><td class="align_center">0.0189</td></tr><tr><td class="align_left">KLT-TLS-ESPRIT</td><td class="align_center">0.01561</td><td class="align_center">0.01593</td></tr><tr><td class="align_left">Data-SSI</td><td class="align_center">0.0064</td><td class="align_center">0.0067</td></tr><tr><td class="align_left">MKLT-TLS-ESPRIT</td><td class="align_center">0.00501</td><td class="align_center">0.00507</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Computational time for RMP, QR-TLS-ESPRIT, KLT-TLS-ESPRIT, data-SSI, and proposed MKLT-TLS-ESPRIT at different SNRs.</div>

Journal of Electrical and Computer Engineering

tab5

Table 5

Table 5: A Novel Subspace Decomposition with Rotational Invariance Technique to Estimate Low-Frequency Oscillatory Modes of the Power Grid 