【摘要】 分析了双H桥型直流电网潮流控制器的工作原理,明确了被控电流、电容电压接入位置和电容电流的关系,并在此基础上利用状态比较方法对各开关状态进行了控制器设计。还以舟山五端柔性直流输电系统为背景,构建直流电网,在PSCAD/EMTDC中进行模型搭建和仿真计算,分析了潮流控制器出口电流、电容电压以及脉冲频率的响应特性,分析结果验证了所提控制策略的有效性。更多还原

【Abstract】 Working principle of dual H-bridge power flow controller for DC grids is analyzed, the relationship between controlled current, capacitance location and capacitance current is explained and the switch controllers are designed with status comparison method. After that, a DC grid is constructed based on Zhoushan multi-terminal HVDC system, the grid is modeled and studied with PSCAD/EMTDC, and the response curves of current, capacitance voltage and switch frequency are analyzed. The results verify the correctness and effectiveness of the proposed control method.更多还原