The high-voltage DC adopts the simulation idea of a two-circuit system on the same convertor. The current DC system availability indicators were insufficient and proposed two reliability indicators, operating utilization and operating availability. At the same time, the active planned outage mode and the activities planned energy unavailability rate index was proposed, and the reliability evaluation program algorithm analysis based on programming developed to verify the feasibility of the power outage maintenance optimization mode, and at the same time provide certain guidance and reference significance for the subsequent design work of the same type of research. A calculation algorithm for evaluating the impact of the outage DC on the reliability of the system is proposed to calculate the value of the transmission system.
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.
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