In accordance with multi-terminal direct current（VSC-MTDC） structure hybrid AC/DC power distribution system

considering AC side three-phase unbalance model and VSC converter operation control mode simultaneously

we proposed a sequential AC/DC power flow method for the voltage source converter. Meanwhile

we discussed the node equivalent processing method with VSC station master-slave and droop control mode. VSC station was treated as dummy generator in AC power flow

and three-phase unbalance method was used. Simulation results on IEEE 13 node test system show that the proposed method can flexibly handle master-slave and droop control mode of hybrid AC/DC power distribution system and fast convergence

moreover

VSC-MTDC can effectively reduce the influence of voltage distribution and three-phase unbalance caused by distribution generator. The three-phase unbalance compensation and operation optimization of hybrid AC/DC power distribution system may be further researched based on the results in this paper.