Tongli new-energy town in Suzhou is a small town integrating with photovoltaic power generations

wind power generations

energy storages

electric vehicles

energy routers and other components.On the basis of such inherent components of the traditional distribution networkas substations

distribution lines

reactive power compensations

loads and etc.

new components for example distributed renewable power supplies

energy storages

electric vehicles

DC loads

energy routers are introduced to construct the AC/DC hybrid distribution network.Currently

power flow calculation method for AC distribution network is quite mature

while the closed-loop operation mode is generally adopted in the DC distribution network

which cannot be used in the AC/DC hybrid distribution network anymore.According to the characteristics of AC/DC hybrid distribution network with energy routers and other new equipments

new method improved from Newton-Raphson method is proposed in this paper.Power flow is solved in AC/DC power distribution network respectively so to perform alternating iteration through the power supply converter as the interface

until flow convergences of AC/DC network.The proposed power flow calculation method will be used in the AC/DC hybrid distribution network of Tongli new-energy town.