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- W4288558752 abstract "An inevitable consequence of the global power system transition towards nearly 100% renewable-based generation is the loss of conventional bulk generation by synchronous machines, their inertia, and accompanying frequency and voltage control mechanisms. This gradual transformation of the power system to a low-inertia system leads to critical challenges in maintaining system stability. Novel control techniques for converters, so-called grid-forming strategies, are expected to address these challenges and replicate functionalities that so far have been provided by synchronous machines. We present a low-inertia high-fidelity case study that includes synchronous machines and models of grid-forming converters. We study interactions between synchronous machines and converters and analyze the response of various grid-forming control approaches to contingencies, i.e., large changes in load and the loss of a synchronous machine. Our case study highlights the positive impact of the grid-forming converters on frequency stability and analyze the potential limitations of each control technique when interacting with synchronous machines. Our studies also analyze how and when the interaction between the fast grid-forming converter, the dc source and ac current limitations, and the slow synchronous machine dynamics contributes to system instability. Lastly, we introduce an effective solution to address the instability issues due to the GFCs ac and dc current limitation." @default.
- W4288558752 created "2022-07-29" @default.
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- W4288558752 date "2019-02-27" @default.
- W4288558752 modified "2023-10-18" @default.
- W4288558752 title "Interactions of Grid-Forming Power Converters and Synchronous Machines" @default.
- W4288558752 doi "https://doi.org/10.48550/arxiv.1902.10750" @default.
- W4288558752 hasPublicationYear "2019" @default.
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