Octave Tools

Octave
Free Matlab clone. It was designed to be as compatiable with Matlab as possible. For vectors, complex numbers, graphs and animations, it is much easier to use than Excel.

https://www.gnu.org/software/octave/

Functions and Scripts
Seq2Distance - convert sequence components to phase and ground distance impedences

Phase2Distance - convert phase components to phase and ground impedances

Phase2Seq- convert a set of sequence phasors to the phase domain

Seq2Phase - convert sequence components to the phase domain