A Power Factors Full-Dimensionally Hunted Power Distribution Strategy for Railway Power Flow Controller Considering Regenerative Braking

RPFC, as a promising technical route for railway power regulation, its rating determinization, and the related flexible power regulation perplex designers and hinder large-scale applications, especially when the RBE is nonnegligible. In this article, a general power factors full-dimensionally hunted power distribution strategy (PFFDH-PDS), applicable for both offline design and real-time control, is proposed. Two key methods are developed: full-dimensionally hunting the power factors (PFs) under the developed mathematic framework, from which the global optimal compensating power and RPFC's rating can be worked out; and precisely partitioning two-phase loads on their PF-P and PF-PF distributing panels; in both methods, RBE is considered. By adopting PFFDH-PDS, RPFC's rating can be reduced by almost 60% compared to the conventional method, while the system has satisfactory grid-connection compatibility. Finally, the effectiveness and performance of the proposal are verified and conducted by real-measured data.