Triples and Quadruple Lines

The triple line model is used to simulate a triple circuit or three lines in the same path. The same reasoning applies to a quadruple line. These two models are a general case of the coupled line model.

Icons and Diagrams

Parameter Description
The parameters for coupled transmission lines are the same as for uncoupled lines. The only difference is that the modal transformation matrix is 9x9 for triple lines and 12x12 for quadruple lines. This can be explained by the fact that each conductor bundle can be considered as a separate phase.

Signal description

• V(a, b, c)_line label_bus label: Voltage of each phase on “bus label” bus (volts);
• I(a, b, c,n)_line label_bus label: Currents of each phase and ground on “bus label” bus (amperes). When the circuits are connected to the same bus, the inductors of phase d, e, f, g, h, i, j, k, and l are used to differentiate the signals. Also, the n1, n2, n3 and n4 neutral indicators will appear.

Triple and Quadruple Lines Control Panels