论文标题
在微电网中进行谐波功率流研究的转换器交换器相互作用的AC/DC相互作用的建模
Modelling of AC/DC Interactions of Converter-Interfaced Resources for Harmonic Power-Flow Studies in Microgrids
论文作者
论文摘要
配电系统体验了转换器交换器交换分布式能源（CIDER）的大规模集成。正如最近的文献所承认的那样，单个苹果物成分和通过网格的不同苹果酒的相互作用可能导致谐波频率的不良放大，并最终损害分布系统的稳定性。在这种情况下，已显示苹果酒的直流和交流侧的相互作用已显示出显着影响。为了分析和支持这种现象的缓解，本文的作者最近提出了一个谐波功率流（HPF）框架，用于具有较高苹果酒的多相网格。该框架考虑了谐波之间的耦合，但忽略了苹果酒的直流响应。建模DC侧和AC/DC转换器将非线性引入苹果酒模型，该模型需要近似于HPF的数值解决方案。本文扩展了苹果酒模型和HPF框架，以解决该方面的包容性不足。扩展的HPF方法应用于CIGRE低压基准微电网的修改版本。将结果与（i）使用Simulink的时间域模拟进行了比较，（ii）忽略DC侧的扩展HPF的前身，以及（iii）经典脱钩的HPF。
Power distribution systems experience a large-scale integration of Converter-Interfaced Distributed Energy Resources (CIDERs). As acknowledged by recent literature, the interaction of individual CIDER components and different CIDERs through the grid can lead to undesirable amplification of harmonic frequencies and, ultimately, compromise the distribution system stability. In this context, the interaction of the DC and AC sides of CIDERs has been shown to have a significant impact. In order to analyze and support the mitigation of such phenomena, the authors of this paper recently proposed a Harmonic Power-Flow (HPF) framework for polyphase grids with a high share of CIDERs. The framework considers the coupling between harmonics, but ignores the DC-side response of the CIDERs. Modelling the DC side and AC/DC converter introduces a nonlinearity into the CIDER model that needs to be approximated for the numerical solution of the HPF. This paper extends the CIDER model and HPF framework to address this aspect, whose inclusion is non-trivial. The extended HPF method is applied to a modified version of the CIGRE low-voltage benchmark microgrid. The results are compared to (i) time-domain simulations with Simulink, (ii) the predecessor of the extended HPF which neglects the DC side, and (iii) a classical decoupled HPF.
