Electrical Engineering and Systems Science > Systems and Control
[Submitted on 21 Jun 2021 (v1), last revised 3 Mar 2022 (this version, v3)]
Title:Dual-port grid-forming control of MMCs and its applications to grids of grids
View PDFAbstract:This work focuses on grid-forming (GFM) control of Interconnecting Power Converters (IPCs) that are used to interconnect multiple HVAC and HVDC subgrids to form a grid of grids. We introduce the concept of dual-port GFM control that leverages the ability of Modular Multilevel Converters (MMCs) to simultaneously form its AC and DC terminal voltage and present two dual-port GFM MMC controls. We provide analytical results and high-fidelity simulations that demonstrate that (i) dual-port GFM control is more resilient to contingencies (i.e., line and generator outages) than state-of-the-art single-port GFM control, and (ii) unlike single-port GFM control, dual-port GFM control does not require assigning grid-forming and grid-following (GFL) roles to the IPC terminals in grids of grids. Finally, we provide an in-depth discussion and comparison of single-port GFM control and the proposed dual-port GFM controls.
Submission history
From: Dominic Groß [view email][v1] Mon, 21 Jun 2021 19:25:45 UTC (1,358 KB)
[v2] Tue, 26 Oct 2021 15:08:41 UTC (2,191 KB)
[v3] Thu, 3 Mar 2022 21:31:56 UTC (2,281 KB)
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