Research Article
Wide-Area Damping Controller Design Based on the Frequency Domain Self-Excitation Method
Table 4
System indices for P=300MW.
| Alternative input signal | Residue index | geometric laterality index | frequency | Damping ratio | Compensation phase |
| the rotor speed difference of G1 and G3 | 0.2967 | 0.9554 | 0.5572 | 0.0566 | 92.6 |
| the active power of the AC line | 6.3309e-06 | 0.8236 | 0.5401 | 0.0670 | 115.6 |
| AC line current amplitude | 0.1087 | 0.7183 | 0.5431 | 0.0070 | 55.1 |
| difference of voltage phase between two sides of AC line | 6.0653e-08 | 0.7496 | 0.5587 | 0.0636 | 165.8 |
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