Modeling and simulation of DC distribution network based on distributed energy

Compared with the AC distribution network, the DC distribution network has lower line losses, better power quality, higher reliability and is suitable for all kinds distributed generation and DC lords access, etc. This paper deals with DC distribution network for distributed generation, electric vehicle charging and discharging station access at first, and then put forward a DC network topology structure, finally with the using PSCAD/EMTDC to model and simulate the distributed generation and the DC distribution network; the distributed generation capacity will change when the environmental factors change, but the DC voltage and the power of DC lords in the DC distribution does not follow the distributed generation capacity, they stay in a constant value, at the same time the DC distribution can transfer energy with the AC network, the DC distribution network can also regulate the power flow in the AC network. The result of the simulation verified the feasibility and effectiveness of the DC network topology structure.