A Novel DC Power Flow Controller for HVDC Grids with Different Voltage Levels

As direct current transmission (HVDC) has been improving rapidly, the power flow control of which is increasingly popular and can be realized by the DC power flow controller. In this paper, a novel DC power flow controller (DCPFC) is proposed with the advantages of simpler strategy, little side effect on direct current system, no auxiliary power source and wide applications. A simulation model with two different DC grids was built in the software PLECS, where the performance of the proposed controller was tested. As a consequence, the simulation results show that the proposed DCPFC would have great performance and prospect.