Optimal Protection Coordination for Microgrid under Different Operating Modes

Table 6

Optimal TDSs of the LCO relays.

Relay	CT ratio	Tap	TDS
			Utility-only mode	Grid-connected mode
Main CB1	2000/5	2.0	1.100	1.100
FCB2	600/5	2.0	1.968	1.923
FCB3	600/5	2.0	1.968	1.890
LCB4	1000/1	0.15	0.750	0.730
LCB5	1000/1	0.15	0.690	0.655
LCB6	1000/1	0.15	0.100	0.100
LCB7	1000/1	0.15	0.750	0.727
LCB8	1000/1	0.15	0.690	0.636
LCB9	1000/1	0.15	0.100	0.100