Research Article
Wide-Area Damping Controller Design Based on the Frequency Domain Self-Excitation Method
Table 2
System indices for P=150MW.
| Alternative input signal | Residue index | geometric laterality index | frequency | Damping ratio | Compensation phase |
| the rotor speed difference of G1 and G3 | 0.2711 | 0.9409 | 0.5536 | 0.0870 | 93.7 |
| the active power of the AC line | 2.0689e-06 | 0.7241 | 0.5700 | 0.0533 | 147.4 |
| AC line current amplitude | 0.1376 | 0.8042 | 0.556 | 0.0773 | 16.5 |
| difference of voltage phase between two sides of AC line | 1.6235e-06 | 0.7171 | 0.567 | 0.0395 | 54.6 |
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