Fig. EMW propagation in the 2-D system based on PDE. (a) and (b) Forward EMW propagation to the edges (t=0.33 s and t=0.56 s, respectively). (c) and (d) Continuing propagation to the diagonal node and the subsequent reflections (t=0.77 s and t=0.90 s, respectively). (e)–(h) Superposition of reflection waves (t=1.05 s, t=1.20 s, t=1.35 s, and t=1.51 s, respectively)
H. Cui et al., “Disturbance Propagation in Power Grids With High Converter Penetration,” in Proceedings of the IEEE, doi: 10.1109/JPROC.2022.3173813.