Two-Layer Coordinated Energy Management Method in the Smart Distribution Network including Multi-Microgrid Based on the Hybrid Flexible and Securable Operation Strategy

Table 6

The values of different economic indices in MGs and SDN.

	Case	I	II	III	IV	V
MG1	Energy cost ($)	2836.11	−1145.37	−1094.22	−1109.23	−1090.732
	NRES operation cost ($)	0	2638.12	2678.43	2704.52	2749.906
	Security benefit ($)	—	0	0	1684.7	1640.13
	Flexibility benefit ($)	—	0	658.45	0	639.76
	Profit ($)	−2836.11	−1492.75	−925.76	89.41	620.716
MG2	Energy cost ($)	1022.43	−213.18	−200.33	−204.27	−198.324
	NRES operation cost ($)	0	982.34	1001.12	1015.46	1032.385
	Security benefit ($)	—	0	0	1261.13	1238.49
	Flexibility benefit ($)	—	0	334.58	0	309.53
	Profit ($)	−1022.43	−769.16	−466.21	449.94	713.96
MG3	Energy cost ($)	473.63	99.45	105.08	103.96	106.79
	NRES operation cost ($)	0	0	0	0	0
	Security benefit ($)	—	0	0	789.74	759.40
	Flexibility benefit ($)	—	0	217.2	0	195.60
	Profit ($)	−473.63	−99.45	112.12	685.78	848.21
SDN	Energy cost ($)	1347.41	−1085.29	−1030.35	−1045.74	−1022.362
	NRES operation cost ($)	0	812.31	833.64	856.27	880
	Security benefit ($)	—	0	0	992.13	969.75
	Flexibility benefit ($)	—	0	183.87	0	163.11
	Profit ($)	−1347.41	273.29	380.58	1181.6	1275.22