基于能量的限流电网形成变流器网络暂态稳定性框架
An Energy-Based Framework for Transient Stability of Grid-Forming Converter Networks With Current Limiting
- Imperial College London(帝国理工学院)
机构由 AI 辅助整理,请以论文原文为准。
AI总结:
本文提出一种纳入限流并保持耗散性的网络能量结构,实现基于Lyapunov的GFM变流器网络暂态稳定性分析,无需模式切换,并通过双GFM示例和电磁暂态仿真验证。
AI中文摘要:
现有关于限流条件下电网形成(GFM)变流器暂态稳定性的分析主要针对单变流器系统,而网络级暂态稳定性分析仍具挑战性。本文构建了一种网络能量结构,该结构在保留可证明的耗散特性的同时纳入限流机制。此结构使得基于Lyapunov的分析与同步电机系统的经典直接法一致,无需在不同模式依赖的能量函数间切换。通过一个采用无功环形限流器和阻抗插入的双GFM示例说明了所提出的框架。电磁暂态仿真支持了理论结果。
英文摘要:
Existing analyses for the transient stability of grid-forming (GFM) converters under current limiting mainly address single-converter systems, while network-level transient stability analysis remains challenging. This paper develops a network energy construction that incorporates current limiting while retaining a provable dissipation property. This structure enables Lyapunov-based analysis consistent with classical direct method for synchronous-machine based systems, without switching between mode-dependent energy functions. A two-GFM example using a reactive circular current limiter and impedance insertion illustrates the proposed framework. Electromagnetic transient simulations support the theoretical results.