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投稿时间：2018-04-18
投稿时间：2018-04-18
中文摘要: 针对直流微电网中线路阻抗不匹配时，传统下垂控制不能有效实现不同分布式电源之间电流的合理分配的问题，提出了一种基于自适应虚拟阻抗的分布式控制策略。各分布式电源基于一致性算法，利用本地和相邻电源的虚拟阻抗值和电流信息自动调节等效输出虚拟阻抗值，实现了负荷电流的合理分配。同时，在所提控制策略的电压环节增加了电压补偿控制器，通过动态调节下垂控制器的电压参考值，补偿不匹配的馈线阻抗引起的电压偏差。最后，利用MATLAB/Simulink搭建仿真模型，仿真结果验证了所提控制策略的有效性。
Abstract:When the line impedance in the DC micro-grid does not match,the traditional drop control cannot effectively achieve a reasonable distribution of current between different distributed power supplies.To solve this problem,a distributed control strategy based on adaptive virtual impedance is proposed.The distributed power is based on consensus algorithm supply,using the virtual impedance value and current information of the local and adjacent power supply to automatically adjust the equivalent output virtual impedance value,and realize the reasonable distribution of the load current.Meanwhile,the proposed control scheme can remove the DC voltage deviation by an additional controller included in the distributed control layer,which effectively compensates for the voltage drop caused by the mismatched feeder impedance.A simulation model is set up by using MATLAB/Simulink and the effectiveness of the proposed method is verified.
keywords: microgrid droop control distributed generation adaptive virtual impedance distributed control
文章编号：20186003 中图分类号： 文献标志码：
基金项目:上海绿色能源并网工程技术研究中心项目（13DZ2251900）。
引用文本：
张金星,于艾清,屠亚南,等.基于自适应虚拟阻抗的微电网分布式电源控制[J].上海电力大学学报,2018,34(6):523-530.
ZHANG Jinxing,YU Aiqing,TU Yanan,et al.Distributed Generators Control Strategy for Microgrid Based on Adaptive Virtual Impedance[J].Journal of Shanghai University of Electric Power,2018,34(6):523-530.
张金星,于艾清,屠亚南,等.基于自适应虚拟阻抗的微电网分布式电源控制[J].上海电力大学学报,2018,34(6):523-530.
ZHANG Jinxing,YU Aiqing,TU Yanan,et al.Distributed Generators Control Strategy for Microgrid Based on Adaptive Virtual Impedance[J].Journal of Shanghai University of Electric Power,2018,34(6):523-530.