PSS Parameter Optimization Based on Comprehensive Damping Effect Method Aiming at Actual Grid Characteristics in Northern China

<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">Mode</td><td class="align_center">Eigenvalue (unit: 1)</td><td class="align_center">Frequency (Hz)</td><td class="align_center">Damping ratio (unit: 1)</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Original parameters</td><td class="align_center">−0.175 + <i>j</i>2.54</td><td class="align_center">0.403</td><td class="align_center">0.069</td></tr><tr><td class="align_left">Optimized parameters</td><td class="align_center">−0.195 + <i>j</i>2.50</td><td class="align_center">0.398</td><td class="align_center">0.078</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Oscillation mode comparison of the regional power grid.</div>

Mathematical Problems in Engineering

tab4

Table 4

Table 4: PSS Parameter Optimization Based on Comprehensive Damping Effect Method Aiming at Actual Grid Characteristics in Northern China 