To efficiently and reliably realize the optimal distribution of power flow in the distribution network and connect PV

electric vehicle

energy storage battery and other DC loads into urban distribution network

an active commutated converter（ACC）-based AC-DC intelligent distribution network is proposed. The proposed network adopts ACC to connect AC distribution network for power flow optimization and ACC-voltage source converter（VSC） based hybrid DC/DC converter for DC loads connection to the distribution network. The mathematical models of ACC and VSC are analyzed.A comprehensive control method which can be adopted to realize all the converters of the system operating at unity power factor states is proposed. The DC fault characteristics of the system is presented. Finally

the simulation and experimental model of the ACC based AC-DC intelligent distribution network is built on the PSCAD/EMTDC software and RT-LAB real time simulation platform. The simulation and experiment results verify that the proposed method can realize all the converters of the system operating at unity power factor at normal state and the system can smoothly ride through when the DC fault occurs.