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中文摘要：
针对现有直流微电网中多个微源协调控制策略的不足,采用直流母线信号DBS（DC bus signaling）控制策略对直流微电网中各微源进行协调控制.该策略将母线电压等级控制策略与下垂控制相结合,首先根据各微源属性对其优先级进行划分,依照电压等级控制策略确定各微源的工作阈值;其次根据下垂控制设计不同的下垂系数,对同一电压等级下的各微源输出功率进行分配,确保直流微电网的稳定运行;最后分析了孤岛和并网模式下各微源的工作方式,并在Matlab/Simulink中构建直流微电网仿真模型进行验证.仿真结果表明,采用DBS控制策略是可行有效的.
英文摘要：
This paper aims at the deficiency of the DC microgrid coordinate control strategy,utilizes DC bus signaling （DBS） control strategies to control the microsources in the DC microgrid.This control method synthesizes voltage level control and droop control.Firstly,the priority of microsources is divided and the work threshold of the microsources in accordance with the voltage level control is designed.Secondly,according to droop control the different sag coefficients are designed,and the output power of the microsources under the same voltage level is distributed to ensure the stable operation of the DC micro power grid.Finally,the work modes of the microsources in island and grid mode are analyzed,simulation results with Matlab/Simulink verify that the DBS control strategy is feasible and effective.
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