Quantitative Transient Stability Analysis for Parallel Grid-Tied Grid-Forming Inverters Considering Reactive Power Control

IF 6.5 1区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Transactions on Power Electronics Pub Date : 2025-01-03 DOI:10.1109/TPEL.2024.3525046

Cong Luo;Shuhan Liao;Yandong Chen;Meng Huang

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Abstract

Transient stability of single grid-forming inverter (GFMI) system has been thoroughly analyzed in recent years, but quantitative transient stability analysis for parallel GFMI system considering reactive power control has not been studied. To bridge this gap, the equivalent large signal model of parallel GFMI system considering the interaction between inverters is newly established. Based on the model, the path-independent Lyapunov function (LF) considering the dynamic of reactive power control, damping dissipation, and interaction effect is newly constructed for quantitative transient stability analysis, which can obtain maximum attraction region for stability prediction, estimate critical clearing time, and characterize stability margin. Compared with traditional LF, the conservatism of attraction region and error of estimated critical clearing time is significantly reduced. Moreover, the effect of parameters on the transient stability of parallel system is revealed. Finally, experimental results verify the accuracy of attraction region and parameter analysis.

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考虑无功控制的并网并网逆变器暂态稳定性定量分析

近年来，人们对单并网逆变器系统的暂态稳定性进行了深入的分析，但对考虑无功控制的并网逆变器系统的暂态稳定性定量分析还没有研究。为了弥补这一缺陷，本文建立了考虑逆变器相互作用的并联GFMI系统等效大信号模型。在此基础上，构建了考虑无功控制动态、阻尼耗散和相互作用效应的路径无关Lyapunov函数（LF）用于暂态稳定定量分析，可获得用于稳定性预测的最大吸引区域，估计临界清除时间，表征稳定裕度。与传统的线性回归算法相比，吸引区域的保守性和估计临界清除时间的误差显著降低。此外，还揭示了参数对并联系统暂态稳定性的影响。最后，通过实验验证了引力区域和参数分析的准确性。

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来源期刊

IEEE Transactions on Power Electronics 工程技术-工程：电子与电气

CiteScore

15.20

自引率

20.90%

发文量

1099

审稿时长

3 months

期刊介绍： The IEEE Transactions on Power Electronics journal covers all issues of widespread or generic interest to engineers who work in the field of power electronics. The Journal editors will enforce standards and a review policy equivalent to the IEEE Transactions, and only papers of high technical quality will be accepted. Papers which treat new and novel device, circuit or system issues which are of generic interest to power electronics engineers are published. Papers which are not within the scope of this Journal will be forwarded to the appropriate IEEE Journal or Transactions editors. Examples of papers which would be more appropriately published in other Journals or Transactions include: 1) Papers describing semiconductor or electron device physics. These papers would be more appropriate for the IEEE Transactions on Electron Devices. 2) Papers describing applications in specific areas: e.g., industry, instrumentation, utility power systems, aerospace, industrial electronics, etc. These papers would be more appropriate for the Transactions of the Society which is concerned with these applications. 3) Papers describing magnetic materials and magnetic device physics. These papers would be more appropriate for the IEEE Transactions on Magnetics. 4) Papers on machine theory. These papers would be more appropriate for the IEEE Transactions on Power Systems. While original papers of significant technical content will comprise the major portion of the Journal, tutorial papers and papers of historical value are also reviewed for publication.