Parameter Optimization of Droop Controllers for Microgrids in Islanded Mode by the SQP Method with Gradient Sampling

Table 8

Comparison of spectral abscissa and computing time between GA method and SQP-GS method.

		Spectral abscissa			Computing time (h)
Method		Best	Mean	Worst	Min	Mean	Max
GA	−15.28	−16.05	−15.33	−15.09	0.116	0.329	0.709
SQP-GS	−16.06	−16.12	−16.12	−16.12	0.095	0.097	0.102