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Integrating Physics-Informed Neural Networks into Power System Dynamic Simulations

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arXiv:2404.13325v1 Announce Type: new
Abstract: Time-domain simulations in power systems are crucial for ensuring power system stability and avoiding critical scenarios that could lead to blackouts. The proliferation of converter-connected resources, however, adds significant additional degrees of non-linearity and complexity to these simulations. This drastically increases the computational time and the number of critical scenarios to be considered. Physics-Informed Neural Networks (PINN) have been shown to accelerate these simulations by several orders of magnitude. This paper introduces the first natural step to remove the barriers for using PINNs in time-domain simulations: it proposes the first method to integrate PINNs in conventional numerical solvers. Integrating PINNs into conventional solvers unlocks a wide range of opportunities. First, PINNs can substantially accelerate simulation time, second, the modeling of components with PINNs allows new ways to reduce privacy concerns when sharing models, and last, enhance the applicability of PINN-based surrogate modeling. We demonstrate the training, integration, and simulation framework for several combinations of PINNs and numerical solution methods, using the IEEE 9-bus system.

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