Closed-Loop Identification of Power System Based on Ambient Data

Table 1

Estimated electromechanical modal properties based on the closed-loop identification model.

	Closed-loop; identification	Theoretical calculation	error/%
Mode 1; frequency/Hz	1.174618	1.163930	0.918268
Mode 1; damping ratio/%	10.9619	10.0376	9.208263
Mode 2; frequency/Hz	0.648041	0.653445	0.827002
Mode 2; damping ratio/%	4.8910	5.3702	8.924001