A Comprehensive Study for The Power Flow Controller Used in Railway Power Systems
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IEEE Essential imbalance and fluctuation of the mobile train load draw some problems, e.g., three-phase unbalance, reactive power, voltage and load fluctuation, harmonics, etc., in both public and train supply networks (TSNs). Railway power flow controller (RPFC) & #x0027;s good performance on dealing with those problems has been convinced in practice these years. However, as the primary task in commercialization, how to qualitatively determine RPFC & #x0027;s design capacity with high cost-efficiency and how to comprehensively assess its performance in the design stage have perplexed engineers for many years. To solve those problems in both planning and real-time executing processes, this paper focuses on a RPFC design capacity optimization strategy for grid-connection compatibility and operating performance improvement at both utility and TSN. The strategy not only makes railway substation satisfy the grid-connection standards with high calculating efficiency, but also renders RPFC to have minimum design capacity, excellent feeder voltage control ability, good fixed capacitor installing prospect and high operating efficiency on the targets of reducing the investment and enhancing the transportation ability. The generic models, industry oriented design and the quantitatively analysis discussed in this paper give an insight for those concerns based on a balance transformer. Future RPFC project on serviced RPS will benefit from the proposed methodology.
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