Parallel inverter control using different conventional control methods and an improved virtual oscillator control method in a standalone microgrid

Protection and Control of Modern Power Systems

Table 4 Dynamic enactment of Droop control, VSM, VOC, and VOC-PSO

Reference active power	Specifications	Droop	VSM	VOC	VOC-PSO
+50% Changes	t_r (ms)	2.51	2.49	0.30	0.28
	t_s (ms)	4.24	4.21	2.41	2.35
	e_ss (%)	1.65	1.63	0.83	0.26
	Over shoot (%)	2.46	1.36	15.3	6.01
	Under shoot (%)	18.1	4.82	0	0