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Challenges and opportunities of inertia estimation and forecasting in low-inertia power systems

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Document pages: 27 pages

Abstract: Accurate inertia estimates and forecasts are crucial to support the systemoperation in future low-inertia power systems. A large literature on inertiaestimation methods is available. This paper aims to provide an overview andclassification of inertia estimation methods. The classification considers thetime horizon the methods are applicable to, i.e., offline post mortem, onlinereal time and forecasting methods, and the scope of the inertia estimation,e.g., system-wide, regional, generation, demand, individual resource.Shortcomings of the existing inertia estimation methods have been identifiedand suggestions for future work have been made.

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