Power Circuit Representation for Digital Studies

Detailed studies of multiconductored circuits with distributed constants involving untransposed lines, unbalanced loads, and simultaneous faults require special circuit representation. A general method for deriving circuits to meet these requirements is presented. The circuits can be used on a voltampere-ohm basis or converted to per-unit circuit or sequence network quantities. The method has been used to obtain a numerical solution to power system unbalances caused by untransposed EHV (extra-high-voltage) lines.