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提高直流微电网动态特性的改进下垂控制策略研究 被引量：86

Research on the Improved Droop Control Strategy for Improving the Dynamic Characteristics of DC Microgrid
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摘要 从理论上分析了功率扰动对输出电压的影响因素,提出一种阻性虚拟阻抗加补偿虚拟阻抗的改进下垂控制策略,阻性虚拟阻抗实现直流微电网稳态时的功率分配,补偿虚拟阻抗提升其动态性能;通过对一个简单的直流微电网进行小信号建模,给出了补偿虚拟阻抗的参数设计过程。仿真和实验结果表明,补偿虚拟阻抗下垂控制策略能够提升母线电压的动态特性,阻尼特性增强。 In this paper, the influence of the power turbulence on the output voltage is theoretically analyzed. An improved droop control strategy based on the resistive virtual impedance and compensative virtual impedance is presented. The resistive virtual impedance achieves the power sharing and the compensative virtual impedance improves the dynamic characteristics of the DC microgrid. A small signal model of a simple DC microgrid is used to analyze the design process of the compensative virtual impedance parameters. Simulation and experimental results demonstrate that the proposed compensative virtual impedance can improve the dynamic characteristics of the DC microgrid and enhance the damping property.
作者 支娜 张辉 肖曦
机构地区 西安理工大学自动化与信息工程学院 电力系统国家重点实验室(清华大学)
出处 《电工技术学报》 EI CSCD 北大核心 2016年第3期31-39,共9页 Transactions of China Electrotechnical Society
基金 国家自然科学基金(51277150 51307140) 陕西省工业攻关项目(2013K07-05) 陕西省教育厅专项科研基金(13JK0994) 陕西省重点学科建设专项资金(105-7075X1301)资助
关键词 下垂控制 虚拟阻抗 动态特性 直流微电网 Droop control, virtual impedance, dynamic characteristics, DC microgrid
分类号 TM615 [电气工程—电力系统及自动化]
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参考文献25

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二级参考文献58

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引证文献86

二级引证文献838

电工技术学报
2016年 第3期

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