Limitations and comparisons of small signal modelling techniques in converter dominated medium voltage networks

Coffey, Sophie and Harrison, Sam and Egea-Àlvarez, Agustí and Brozio, Cornel; (2023) Limitations and comparisons of small signal modelling techniques in converter dominated medium voltage networks. In: 2023 25th European Conference on Power Electronics and Applications (EPE'23 ECCE Europe). IEEE, Piscataway, NJ. ISBN 9789075815412 (https://doi.org/10.23919/epe23ecceeurope58414.2023...)

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Abstract

Grids are seeing changing SCRs, due to increased power converter penetration. This paper assesses several common small signal modelling techniques of varying computational complexity for their accuracy. Each model is tested for its accuracy limitations in response to a power disturbance for varying grid SCRs and X/R ratios and controller damping for distribution networks.