线动力学对成网逆变器Hopf分叉稳定裕度的影响

IF 5.6 2区工程技术 Q2 ENERGY & FUELS

Sustainable Energy Grids & Networks Pub Date : 2025-08-26 DOI:10.1016/j.segan.2025.101947

Sushobhan Chatterjee, Sijia Geng

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引用次数: 0

摘要

本文通过Hopf分岔分析研究了并网逆变器的振荡不稳定性。基于分岔超曲面的法向量，导出了稳定裕度参数灵敏度的解析表达式。通过综合分析，确定了最有效的控制参数，以抵消参数变化引起的不稳定效应。特别研究了动态线建模对稳定裕度的影响。可以观察到，包括线动力学引入了跨参数稳定裕度的一般显著减小。此外，动态线模型引入了静态模型中不存在的新分支。这说明采用静线模型可能导致稳定性评估结果过于乐观。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Effects of line dynamics on the stability margin to Hopf bifurcation in grid-forming inverters

This paper studies oscillatory instability in grid-forming inverters through Hopf bifurcation analysis. An analytical expression for the parameter sensitivity of the stability margin is derived based on the normal vector to the bifurcation hypersurface. Through comprehensive analysis, we identify the most effective control parameters in counteracting the destabilizing effect due to parameter variations. In particular, the impacts of dynamic line modeling on the stability margin are investigated. It is observed that including line dynamics introduces a generally significant reduction in the stability margin across parameters. Additionally, dynamic line models introduce new bifurcations not present in the static model case. This suggests that adopting static line models may lead to overly optimistic stability assessment results.

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来源期刊

Sustainable Energy Grids & Networks Energy-Energy Engineering and Power Technology

CiteScore

7.90

自引率

13.00%

发文量

206

审稿时长

49 days

期刊介绍： Sustainable Energy, Grids and Networks (SEGAN)is an international peer-reviewed publication for theoretical and applied research dealing with energy, information grids and power networks, including smart grids from super to micro grid scales. SEGAN welcomes papers describing fundamental advances in mathematical, statistical or computational methods with application to power and energy systems, as well as papers on applications, computation and modeling in the areas of electrical and energy systems with coupled information and communication technologies.