The Impact of Frame Transformations on Power System EMT Simulation

Jiahang Li, Yitong Li, Yunjie Gu

OAI: oai:purehost.bath.ac.uk:openaire_cris_publications/43af7fb9-96ab-4683-9688-d8383c2b6bee • DOI: https://doi.org/10.1109/TPWRS.2023.3242823

This article investigates the impact of frame transformations on the accuracy of numerical discretization in power system transient and stability studies. As analysed, frame transformations influence the convergence of the numerical discretization. Specifically, for an explicit discretization method (e.g., forward Euler method), the stability of the original system is best preserved in the frame where the system eigenvalue is closer to the origin of the complex plane, e.g., in the stationary frame for inductors and capacitors, and in the synchronous frame for <italic>dq-</italic>frame controllers of inverters. Simulation results are given to validate the theoretical analysis.

Convergence Difference equations Eigenvalues and eigenfunctions Numerical models numerical simulation Numerical stability power system stability electromagnetic transients frame transformation numerical simulation /dk/atira/pure/subjectarea/asjc/2100/2102 name=Energy Engineering and Power Technology /dk/atira/pure/subjectarea/asjc/2200/2208 name=Electrical and Electronic Engineering