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This article introduces the double-circuit Direct Current system on the same tower, and then analyses the hierarchical structure of the double-Circuit Direct Current Control System Based on PSCA. For the power control, the double-circuit power coordinated control strategy and the low-load reactive power control strategy are made in-depth research and analysis, and then made a simulation model of the double-circuit coordination of the double-circuit DC system on the same tower based on PSCA. Finally, based on the existing dual-circuit power control function of the system, it can reduce the ground electrode current and maintain the reactive power balance of the converter station to optimize the distribution coefficient of the two-circuit DC power, and effectively increase the reactive power in the conversion process.

Research on Double-Circuit Direct Current Control System Based on PSCA