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https://open.uns.ac.rs/handle/123456789/608
Назив: | Geometrically Motivated Reparameterization for Identifiability Analysis in Power Systems Models | Аутори: | Transtrum M. Francis B. Youn C. Sarić, Andrija Stankovic A. |
Датум издавања: | 2-јан-2019 | Часопис: | 2018 North American Power Symposium, NAPS 2018 | Сажетак: | © 2018 IEEE. This paper describes a geometric approach to parameter identifiability analysis in models of power systems dynamics. When a model of a power system is to be compared with measurements taken at discrete times, it can be interpreted as a mapping from parameter space into a data or prediction space. Generically, model mappings can be interpreted as manifolds with dimensionality equal to the number of structurally identifiable parameters. Empirically it is observed that model mappings often correspond to bounded manifolds. We propose a new definition of practical identifiability based the topological definition of a manifold with boundary. In many ways, our proposed definition extends the properties of structural identifiability. We construct numerical approximations to geodesics on the model manifold and use the results, combined with insights derived from the mathematical form of the equations, to identify combinations of practically identifiable and unidentifiable parameters. We give several examples of application to dynamic power systems models. | URI: | https://open.uns.ac.rs/handle/123456789/608 | ISBN: | 9781538671382 | DOI: | 10.1109/NAPS.2018.8600617 |
Налази се у колекцијама: | FTN Publikacije/Publications |
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