Fast Frequency Support at a Wind Energy System Using Time-Varying Inertia and Droop Controls based on Globally Optimal $H_{\infty}$ Control Design

Ngo, Hoang-Trung; Kamal, Elkhatib; Marinescu, Bogdan

doi:10.1109/mepcon50283.2021.9686214

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2024

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“…However, the inertia, including both the rotational and virtual inertia, is not the only FFS that IBRs can provide [18]. Considering that the inverter control is much faster than the controllers of SGs, all the frequency control of the IBR that can regulate the active power output before the secondary frequency regulation of the SGs can be regarded as fast frequency control [19].…”

Section: Introductionmentioning

confidence: 99%

Evaluating the Fast Frequency Support Ability of the Generation Units in Modern Power Systems

Liu,

Mo,

Lai

et al. 2024

Sustainability

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Modern power systems include synchronous generators (SGs) and inverter-based resources (IBRs) that provide fast frequency support (FFS) to the system. To evaluate the FFS ability of both SGs and IBRs under a unified framework, this paper proposes a method that evaluates the FFS ability of each generation unit via its dynamic trajectories of the active power output and the frequency following a contingency. The proposed method quantified FFS ability via two indexes, namely, the equivalent inertia constant and the equivalent droop, of each generation unit. The Tikhonov regularization algorithm is employed to estimate the FFS ability indexes. The New England 10-machine system serves to validate the feasibility and accuracy of the proposed method and illustrate the different FFS ability of the grid−forming and grid−following IBRs.

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Section: Introductionmentioning

confidence: 99%