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Effects analysis of excitation circuit on power control for VSG: a design-oriented study

机译:励磁电路对VSG电源控制的影响:面向设计的研究

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摘要

Reactive power control loop (RPCL) in virtual synchronous generator (VSG) plays the role of excitation circuit in conventional SG. The control strategy improvement or parameters configuration method of RPCL is always the emphasis of analysis. However, the impacts of RPCL on VSG system performance are usually overlooked. On the basis of that, this study aims to investigate the effects of RPCL on power control performance. First, a simplified SG model is established and implemented to VSG. Then, VSG system modelling with state equations in power control time scale is elaborated. The excitation current in the modelling is regarded as one crucial state variable to identify the effects of the excitation circuit on VSG system. Eigenvalue locus analysis and eigenproperties analysis reveal how the excitation circuit affects power oscillation damping performance and even results in power coupling issue of power control. The effects of operating points on system power control are also taken into account. Finally, the experimental results are given to verify the theoretical analysis.
机译:虚拟同步发电机(VSG)中的无功功率控制回路(RPCL)起到传统SG中的激励电路的作用。 RPCL的控制策略改进或参数配置方法始终强调分析。但是,RPCL对VSG系统性能的影响通常被忽视。在此基础上,本研究旨在调查RPCL对功率控制性能的影响。首先,建立简化的SG模型并实现为VSG。然后,详细说明了使用功率控制时间尺度的状态方程的VSG系统建模。建模中的激励电流被认为是一个关键状态变量,以识别激励电路对VSG系统的影响。特征值轨迹分析和特征特性分析揭示了激励电路如何影响功率振荡阻尼性能,甚至导致功率控制的电源耦合问题。还考虑了操作点对系统功率控制的影响。最后,给出了实验结果来验证理论分析。

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  • 来源
    《Renewable Power Generation, IET》 |2020年第5期|803-810|共8页
  • 作者单位

    Zhejiang Univ Coll Elect Engn Hangzhou 310027 Peoples R China;

    Zhejiang Univ Coll Elect Engn Hangzhou 310027 Peoples R China;

    Inner Mongolia Power Grp Corp Hohhot 010020 Peoples R China;

    China Jiliang Univ Coll Modern Sci & Technol Hangzhou 310018 Peoples R China;

    Zhejiang Univ Coll Elect Engn Hangzhou 310027 Peoples R China;

    Zhejiang Univ Coll Elect Engn Hangzhou 310027 Peoples R China;

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  • 正文语种 eng
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