*6.1. Case Parameters*

data are shown in Table 1.

*6.1. Case Parameters*  In Figure 9, 0-33 is the node number, and L1-L33 are the line numbers. The node and line basic In Figure 9, 0-33 is the node number, and L1-L33 are the line numbers. The node and line basic data are shown in Table 1.


**Table 1.** Node and line data.

Based on the original AC distribution network, the following changes were made to simulate the AC/DC distribution network: the AC lines between node 20 and node 21, node 23 and node 24, node 31 and the node 32 change into the DC lines. Capacitors with a value of 1 are modified at nodes 20, 21, 23, 24, 31, 32. The VSCs are installed after the three DC lines, and the configuration parameters of the converter station are consistent: the rated capacity is 2MVA, the resistance is 0.5 Ω, and the reactance is 1.5 Ω.

The MT candidate nodes are 2, 6, 10, and 14, the PV candidate nodes are 21, 24, and 32, and the WG candidate nodes are 22 and 25. The maximum current carrying capacity of the AC line is 5000 kVA, and the maximum current carrying capacity of the DC line is 2500 kVA. The node voltage is allowed to range from 0.9 to 1.1 p.u., and the three types of DG are rated at 0.1 MW. The number of access nodes to be selected for all three DGs is limited to 15. The discount rate *r* is taken as 0.1, the DG recovery period *n<sup>y</sup>* is taken as 20, the unit net loss *closs* is taken as 0.017 million yuan/(MW h), and the greenhouse gas emission intensity per unit MT *K*mt is taken as 724.6 kg/(MW h). The environmental protection value of greenhouse gases *V*CO<sup>2</sup> is taken as 0.023 yuan/kg, and the fine for greenhouse gas emissions from MT *R*CO<sup>2</sup> is taken as 0.01 yuan/kg. The parameters of the genetic algorithm are: the population individual is 100, the number of iterations is 20, the crossover rate is 0.5, and the mutation rate is 0.1. The ant colony algorithm parameters are: the number of ants is 60, the pheromone concentration retention coefficient is 0.9, and the information heuristic factor and the expected heuristic factor are both 1, at the initial moment ∆*τ k ij*(*t*) = 0, the number of iterations is 60.

According to [22], it is assumed that DG's investment, operation and maintenance, fuel cost and environmental subsidies are as shown in Table 2.


