An Effective Method to Determine the Available Transmission Capacity with Variable Frequency Transformer

Table 4

Static ATC (p.u.) and error of ATC (Er), for contracts over seven systems, with (W.) and without (Wo) VFT.

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A: approaches: 1: CPF [9]; 2: CPF-GMRES [10]; 3: improved NRS [11]; 4: the old static ATC [12]; 5: HEPF [6]; 6: the proposed approach 7 systems (S.): 1–39 [27], 2–118 [27], 3–145 [28], 4–300 [27], 5–1150, 6–4440 [12], and 7–6067 [29].