Research on modeling and simulation of a kind of AC/DC power distribution device

摘要

In this paper, a kind of AC/DC power distribution device was proposed, which was based on the back-to-back HVDC system. Its function was to undertake the integration of new energy sources and DC loads. The power transmission strategy and the DC voltage control method of the AC/DC power distribution device were designed and explored. The simulation model of the above system was set up with electric converters, i.e. wind power generation, photovoltaic and energy storage battery. Then, dynamic simulation of operation characteristics was researched and analyzed. The simulation results indicate that the proposed AC/DC distribution system can operate steadily; the DC bus voltage is stable; flexible energy conversion can be achieved in the system by means of power control.