Fig. 2: Schematic of the test system.
From: Data-driven dynamic modeling for inverter-based resources using neural networks
The key defines generator types (G1–G9) and substation voltage levels (500 kV and 220 kV). Single, double, and triple lines indicate the number of parallel circuits (one, two, or three) on a transmission corridor. Low-voltage level substations are aggregated for concise illustration.
