Optimal Ratio of Grid-Forming to Grid-Following Inverters Towards Resilient Power Electronics Dominated Grids

2023 IEEE Applied Power Electronics Conference and Exposition (APEC) Pub Date : 2023-03-19 DOI:10.1109/APEC43580.2023.10131538

A. Zare, Silvanus D’silva, M. Shadmand

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引用次数: 1

Abstract

The modern paradigm of power electronics dominated grid (PEDG) has facilitated integration of grid forming (GFM) and grid following (GFL) inverters in the power systems. Addressing the potential disturbances in the PEDG will demand frequent reconfigurations including dynamic adjustment of these grid-interactive inverters' power contributions. However, such dynamic adjustments in GFM-GFL inverters' power contributions may in turn introduce stability issues. The optimal ratio of GFM to GFL inverters in a PEDG has not been well studied in literature with regards to system resiliency and reliable power delivery. This paper provides an analytical approach to determine the optimal ratio of GFM and GFL inverters to minimize their adverse dynamic interactions when subjected to severe disturbances. The main objective of this paper is to provide a comprehensive dynamic interaction-based analysis for a fleet of GFM and GFL inverters within a grid cluster and investigate the impact of inertia level emulated by these GFM inverters on the PEDG resiliency. The provided analysis is validated via several case studies in large-scale simulation representing a grid cluster with multiple GFM and GFL inverters.

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面向弹性电力电子主导电网的成网与随网逆变器的最佳比例

电力电子主导电网(PEDG)的现代范例促进了电网形成(GFM)和电网跟随(GFL)逆变器在电力系统中的集成。解决PEDG中的潜在干扰将需要频繁的重新配置，包括动态调整这些电网交互逆变器的功率贡献。然而，这种动态调整在ggm - gfl逆变器的功率贡献可能反过来引入稳定性问题。在PEDG中，GFM与GFL逆变器的最佳比例在系统弹性和可靠的电力输送方面还没有得到很好的研究。本文提供了一种分析方法来确定GFM和GFL逆变器的最佳比例，以最大限度地减少它们在遭受严重干扰时的不利动态相互作用。本文的主要目的是对电网集群内的GFM和GFL逆变器进行全面的动态交互分析，并研究GFM逆变器模拟的惯性水平对PEDG弹性的影响。所提供的分析通过大规模模拟的几个案例研究进行了验证，这些案例研究代表了具有多个GFM和GFL逆变器的网格集群。

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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2023 IEEE Applied Power Electronics Conference and Exposition (APEC)

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