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Electrical Engineering and Systems Science > Systems and Control

arXiv:2409.09912 (eess)
[Submitted on 16 Sep 2024]

Title:Discovery and Characterization of Cross-Area and Intra-Area SSOs Sensitive to Delay in Droop Control of Grid-Forming Converters

Authors:Lilan Karunaratne, Nilanjan Ray Chaudhuri, Amirthagunaraj Yogarathnam, Meng Yue
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Abstract:Subsynchronous oscillations (SSOs) involving grid-forming converters (GFCs) are in a less familiar territory of power system dynamics. This letter reports a new phenomenon namely cross-area SSOs in grids with 100% droop-controlled GFC-based renewable penetration, which was discovered during our study on evaluating the adequacy of quasistationary phasor calculus (QPC) and space phasor calculus (SPC)-based models in capturing SSOs. We present frequency-domain characterization of such oscillatory modes in addition to intra-area SSOs in grids involving GFCs and study the impact of a delay in power-frequency droop feedback loop in regards to their stability. Electromagnetic transient (EMT) simulations validate our findings.
Subjects: Systems and Control (eess.SY)
Cite as: arXiv:2409.09912 [eess.SY]
  (or arXiv:2409.09912v1 [eess.SY] for this version)
  https://doi.org/10.48550/arXiv.2409.09912

Submission history

From: Lilan Karunaratne [view email]
[v1] Mon, 16 Sep 2024 00:58:01 UTC (1,774 KB)
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