Locating Natural Frequency Faults in HVDC Transmission Systems Based on the Rotation-Invariant Technology Signal Parameter Estimation Algorithm and the Total Least Squares Method

<table class="table-group" id="tab4"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Transition resistance (Ω)</td><td class="align_center">Natural frequency principal component (Hz)</td><td class="align_center">Calculated ranging point (km)</td><td class="align_center">Error (%)</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">10</td><td class="align_center">1018</td><td class="align_center">74.41</td><td class="align_center">−0.79</td></tr><tr><td class="align_left">20</td><td class="align_center">1012</td><td class="align_center">74.85</td><td class="align_center">−0.20</td></tr><tr><td class="align_left">50</td><td class="align_center">1005</td><td class="align_center">75.37</td><td class="align_center">−0.49</td></tr><tr><td class="align_left">100</td><td class="align_center">995</td><td class="align_center">75.97</td><td class="align_center">+1.30</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>TLS-ESPRIT short-circuit distance measurements for different transition resistance values.</div>

Mathematical Problems in Engineering

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Table 4

Table 4: Locating Natural Frequency Faults in HVDC Transmission Systems Based on the Rotation-Invariant Technology Signal Parameter Estimation Algorithm and the Total Least Squares Method 

Table 4 | Locating Natural Frequency Faults in HVDC Transmission Systems Based on the Rotation-Invariant Technology Signal Parameter Estimation Algorithm and the Total Least Squares Method 