Abstract
AbstractDC power flow controller is a research hotspot to increase control freedom degrees of power flow and improve rationality of power flow distribution in meshed HVDC grid. Based on previous analysis and research on C-based full-bridge interline DC power flow controller, a modular n-line C-based full-bridge interline DC power flow controller is proposed to give a systematic explanation of this type controller framework. The topology can realize active control of (n − 1) lines at most. A modular 3-line C-based full-bridge interline DC power flow controller is taken as an example to detail operation principle, control strategy, characteristics analysis. Simulation results verify the topology is capable of controlling two lines actively. By comparison, similarities and differences between C-based full-bridge and half-bridge interline DC power flow controller are summarized.KeywordsDc power flowPower flow controllerModular interline dc power flow controllerMultiple control freedom degrees
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