发表机构
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 中文总结
本文量化电网构型逆变器数量与位置对系统强度的影响，提出基于雅可比电压刚度指标（JVSM）的评估方法，并在IEEE 39节点系统上验证，为GFM需求规范提供定量依据。
AI 中文摘要
随着电力系统向以逆变器为基础资源（IBR）主导的电网过渡，电网构型（GFM）IBR 日益被期望提供维持足够系统强度所需的电压源特性。然而，需要多少 GFM IBR，以及它们在电网中的部署位置，仍不清楚。本文研究了 GFM IBR 的数量和位置对小信号系统强度的影响。雅可比电压刚度指标（JVSM）通过频域雅可比特性量化电压幅值和电压相位刚度，被用作系统强度的度量。分析表明，增加 GFM IBR 的数量通常会改善系统强度；然而，具有相同数量 GFM IBR 的配置可能因其位置不同而表现出显著不同的母线级系统强度特性。因此，本文提供了基于最终系统强度来规定 GFM 需求的定量基础，而非仅依据渗透率或 GFM IBR 的数量。在改进的 IEEE 39 节点系统上的案例研究展示了如何使用 JVSM 来量化和比较不同数量和位置的 GFM IBR 对系统强度的影响，所得强度评估与小信号振荡稳定性进行了验证。
英文摘要
As power systems transition toward inverter-based resource (IBR)-dominated grids, Grid-ForMing (GFM) IBRs are increasingly expected to provide the voltage-source characteristics required to maintain adequate system strength. However, how many GFM IBRs are required, and where they should be located in the grid, remains unclear. This paper investigates the impact of the number and location of GFM IBRs on small-signal system strength. The Jacobian Voltage Stiffness Metric (JVSM), which quantifies the voltage-magnitude and voltage-phase stiffness from frequency-domain Jacobian characteristics, is used as a system-strength measure. The analysis demonstrates that increasing the number of GFM IBRs generally improves system strength; however, configurations with the same number of GFM IBRs can exhibit significantly different bus-wise system-strength characteristics depending on their locations. Thus, this paper provides a quantitative basis for specifying GFM requirements in terms of the resulting system strength, rather than solely in terms of penetration level or the number of GFM IBRs. Case studies on a modified IEEE 39-bus system demonstrate how JVSM can be used to quantify and compare the system-strength impact of different numbers and locations of GFM IBRs, with the resulting strength assessments validated against small-signal oscillatory stability.
Comments25th Wind & Solar Integration Workshop, Porto, Portugal, 29 September - 02 October 2026
