pub fn source_impedance_pu_seq(
sk: f64,
rx_ratio: f64,
z01_ratio: f64,
s_base_va: f64,
) -> (f64, f64, f64, f64)Expand description
Computes per-unit positive- and zero-sequence source impedance
(r1, x1, r0, x0), where z01_ratio = z0 / z1 (PGM convention), so the
zero-sequence impedance is z1 * z01_ratio.