Electrical Engineering and Systems Science > Systems and Control
[Submitted on 25 Mar 2024 (v1), last revised 27 Mar 2024 (this version, v3)]
Title:Ensuring Disturbance Rejection Performance by Synthesizing Grid-Following and Grid-Forming Inverters in Power Systems
View PDFAbstract:To satisfy dynamic requirements of power systems, it is imperative for grid-tied inverters to ensure good disturbance rejection performance (DRP) under variable grid conditions. This letter discovers and theoretically proves that for general networks, synthesizing grid-following (GFL) inverters and grid-forming (GFM) inverters can always more effectively ensure the DRP of multiple inverters, as compared to homogeneous inverter-based systems that solely utilize either GFL or GFM inverters. The synthesis of GFL inverters and GFM inverters can concurrently increase the smallest eigenvalue and decrease the largest eigenvalue of the network grounded Laplacian matrix. This can be equivalent to rematching the proper short-circuit ratio (SCR) for GFL and GFM inverters, thereby ensuring the DRP of inverters both in weak and strong grids. The results reveal the necessity of synthesizing diverse inverter control schemes from the network-based perspective. Sensitivity function-based tests and real-time simulations validate our results.
Submission history
From: Huanhai Xin [view email][v1] Mon, 25 Mar 2024 07:16:08 UTC (1,269 KB)
[v2] Tue, 26 Mar 2024 13:58:07 UTC (1,405 KB)
[v3] Wed, 27 Mar 2024 01:30:16 UTC (1,597 KB)
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