Stability and Reactive Power Sharing Enhancement in Islanded Microgrid via Small-Signal Modeling and Optimal Virtual Impedance Control

Table 5

Comparison of time-domain specifications between the conventional method and the proposed control diagram.

Sl. No	Parameters	Proposed GA [0, 0.5 s]			Proposed PSO [0, 0.5 s]			Conventional [0, 0.5 s]
1	Active power (P)	DG1	DG2	DG3	DG1	DG2	DG3	DG1	DG2	DG3
	tr (s)	0.079	0.069	0.022	0.09	0.069	0.024	0.102	0.072	0.015
	Mp (%)	7.0	0.04	8.3	8.7	0.05	14	30	5.5	54
	ts (s)	0.15	0.10	0.16	0.17	0.11	0.20	0.46	0.31	0.49
2	Reactive power (Q)	DG1	DG2	DG3	DG1	DG2	DG3	DG1	DG2	DG3
	tr (s)	0.06	0.06	0.07	0.08	0.07	0.09	0.06	0.07	0.07
	Mp (%)	0.5	4.0	3.5	9	3	6	39	17	30
	ts (s)	0.09	0.09	0.10	0.2	0.12	0.13	0.48	0.40	0.50
3	iod	DG1	DG2	DG3	DG1	DG2	DG3	DG1	DG2	DG3
	tr (s)	0.04	0.02	0.0007	0.06	0.04	0.07	0.07	0.03	0.0007
	Mp (%)	24	11	80	20	9	10	50	22	86
	ts (s)	0.2	0.15	0.2	0.24	0.3	0.27	0.49	0.45	0.49
4	ioq	DG1	DG2	DG3	DG1	DG2	DG3	DG1	DG2	DG3
	tr (s)	0.02	0.006	0.01	0.04	0.06	0.06	0.05	0.014	0.3
	Mp (%)	10	13	25	25	50	10	60	44	43
	ts (s)	0.1	0.4	0.13	0.2	12	26	0.48	0.4	0.47