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arXiv 2603.09424eess.SYcs.SY
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基于IBR的电力网络系统级动态性能指标

System-wide Dynamic Performance Metric for IBR-based Power Networks

University College Dublin(都柏林大学);Irish Transmission System Operator, EirGrid(爱尔兰输电系统运营商,EirGrid)

Rodrigo Bernal, Taulant Kerci, Federico Milano

AI总结:

本文提出了一种用于评估基于IBR电力网络动态性能的系统级指标,通过加权局部电压变化和复功率分解,全面评估电网动态特性。

摘要:

在基于逆变器资源(IBRs)的电力网络中,快速控制器导致频率和电压动态相互重叠。因此,通过综合系统级指标评估此类网络的整体动态性能变得至关重要。本文提出了一种统一的指标,用于评估此类情况下的动态性能。所提出的指标由每个节点局部电压相量变化的加权和组成,其中权重为各节点注入的复功率。所提出的指标进一步分解为设备驱动和网络驱动组件,从而能够更全面地评估电网动态。基于修改版的IEEE 39节点系统进行案例研究,其中同步机被替换成逆变器资源。通过R/X比的敏感性分析来评估该指标在传统电网以及具有强电压频率耦合和复杂功率流的电网中的表现。

英文摘要:

In power networks based on Inverter-Based Resources (IBRs), fast controllers cause frequency and voltage dynamics to overlap. Thus, it becomes critical to assess the overall dynamic performance of such networks through a combined system-wide metric. This letter presents a unified metric designed to evaluate dynamic performance in such cases. The proposed metric consists of a weighted sum of local voltage phasor variations at each bus, where the weights are the complex powers injected at the buses. The proposed metric is further decomposed into device-driven and network-driven components, enabling a more comprehensive assessment of grid dynamics. A case study based on a modified version of the IEEE 39-bus system is presented, in which synchronous machines are replaced by inverter-based resources. A sensitivity analysis of the R/X ratio is utilized to evaluate the metric in conventional grids, as well as in those characterized by strong voltage-frequency coupling with complex power flows.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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