.AixLib.Electrical.DC.Lines.TwoPortRCLine

Information

This model represents a series of two resistances and a capacitance that connect two DC interfaces. This model can be used to represent a cable in a DC grid.

The model represents the lumped resistances and capacity (T-model) as shown in the figure below.

As can be seen in the figure, the resistance R is split in two halves and the capacitance is located in the center. The capacitance in the center is optional and can be selected using the boolean flag use_C = true. The model is either dynamic or static depending on the presence of the capacitive effect.

Revisions

• March 19, 2015, by Michael Wetter:
  Removed redeclaration of phase system in Terminal_n and Terminal_p as it is already declared to the be the same phase system, and it is not declared to be replaceable. This avoids a translation error in OpenModelica.
• March 10, 2015, by Marco Bonvini:
  Added initial equation and parameter Vc_start.
• January 14, 2015, by Marco Bonvini:
  Added equation that represents Joule losses
• June 2, 2014, by Marco Bonvini:
  Revised documentation.
• October 31, 2013, by Marco Bonvini:
  First implementation.