Electromagnetic Transients (EMT) Examples

This directory preserves the intended model composition for future EMT examples. The trees describe ownership and nesting only. They do not define a case-file schema.

Note

The formulations support \(N\) phases; initial development targets three phases.

LineLumped

LineLumped
  parameters: N, K, conductors, dx
  initial state: i12
  submodels
    Zp: VectorFit
    Yp[1]: VectorFit
    Yp[2]: VectorFit

Zp represents per-unit-length series impedance. The two Yp instances represent terminal shunt admittances. Pole-free coefficients give the RLGC form, while poles and residues give the frequency-dependent form.

LineDistributed

LineDistributed
  parameters: N, K, conductors
  submodels
    Yc[1]: VectorFit
    Yc[2]: VectorFit
    H21: Propagation
      input: VectorFit
      delays[M]: Delay
      output: VectorFit
    H12: Propagation
      input: VectorFit
      delays[M]: Delay
      output: VectorFit

Yc represents characteristic admittance. H21 and H12 represent directional propagation. The rational factors have no term linear in \(s\). Pole-free factors give the Bergeron form, while fitted poles and residues give the frequency-dependent form.