Table 6 Multi-stage planning results in Case III

AC-DC converter (MVA)

Node 8

1.52

1.52

1.77

2.05

Node 21

0.02

0.48

2.08

2.13

Node 27

0.76

0.76

1.41

5.20

DC-DC converter (MW)

0.72

1.83

4.39

8.00

Storage battery (MWh)

2.05

5.18

16.77

45.16

Line construction cost (10⁴RMB)

13.18

13.18

13.18

13.18

Total investment cost (10⁴RMB)

146.05

180.85

307.66

692.76

Total cost (10⁴RMB)

2712.96

2636.06

2251.12

1827.44