recordGeneric
Data record for a generic medium voltage cable
Extends from Modelica.Icons.MaterialProperty (Icon for property classes), AixLib.Electrical.Transmission.BaseClasses.BaseCable (Record that contains the properties of a generic cable).
Information
This is a base record for specifying physical properties for medium voltage commercial cables. New cables can be added by extending it.
For medium voltage cables, the geometric properties of the cable and the material are specified. For example some of the properties that are specified are:
Rdc : Characteristic DC resistance at T = T_ref[Ohm/m] T_ref : Reference temperature of the material [K] d : Inner diameter [m] D : Outer diameter [m] Amp : Ampacity [A]
other properties such as the geometric mean diameter GMD and the geometric mean radius GMR are by default computed using functions, but this can be overriden.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| AixLib.Electrical.Transmission.Types.Material | material (from BaseCable) | AixLib.Electrical.Transmission.Types.Material.Al | Material of the cable |
| Modelica.Units.SI.Current | Amp (from BaseCable) | 0.0 | Ampacitance of the cable |
| Modelica.Units.SI.Temperature | T_ref (from BaseCable) | 298.15 | Reference cable temperature |
| Modelica.Units.SI.Temperature | M (from BaseCable) | 228.1 + 273.15 | Temperature constant of the material |
| String | size | AWG or kcmil code representing the conductor size | |
| AixLib.Electrical.Types.CharacteristicResistance | Rdc | Characteristic DC resistance of the cable @ T_ref | |
| Modelica.Units.SI.Length | d | Inner diameter | |
| Modelica.Units.SI.Length | D | Outer diameter | |
| Modelica.Units.SI.Length | GMR | Geometrical Mean Radius of the cable | |
| Modelica.Units.SI.Length | GMD | Geometrical Mean Diameter of the cable |
Contents
| Name | Description |
|---|---|
 lineResistance | Function that computes the resistance of a cable |
 lineInductance | Function that computes the resistance of a cable |
 lineCapacitance | Function that computes the capacitance of a cable |
Revisions
-
September 23, 2014, by Marco Bonvini:
Revised structure of the record, not it extends the base records and add details for the medium voltage cables. -
Sept 19, 2014, by Marco Bonvini:
Added User's guide.