Buildings.Electrical.Transmission.MediumVoltageCables

Package of medium voltage electricity cables used in distribution grid

Information

This package contains records of physical properties of medium voltage commercial cables. New cables can be added by extending the base record Buildings.Electrical.Transmission.MediumVoltageCables.Generic.

Extends from Modelica.Icons.MaterialPropertiesPackage (Icon for package containing property classes).

Package Content

Name Description
Buildings.Electrical.Transmission.MediumVoltageCables.Annealed_Al_10 Annealed_Al_10 Annealed Al cable - AWG 1/0
Buildings.Electrical.Transmission.MediumVoltageCables.Annealed_Al_1000 Annealed_Al_1000 Annealed Al cable - AWG 1000
Buildings.Electrical.Transmission.MediumVoltageCables.Annealed_Al_1500 Annealed_Al_1500 Annealed Al cable - AWG 1500
Buildings.Electrical.Transmission.MediumVoltageCables.Annealed_Al_30 Annealed_Al_30 Annealed Al cable - AWG 3/0
Buildings.Electrical.Transmission.MediumVoltageCables.Annealed_Al_350 Annealed_Al_350 Annealed Al cable - kcmil 350
Buildings.Electrical.Transmission.MediumVoltageCables.Annealed_Al_40 Annealed_Al_40 Annealed Al cable - AWG 4/0
Buildings.Electrical.Transmission.MediumVoltageCables.Annealed_Al_500 Annealed_Al_500 Annealed Al cable - AWG 500
Buildings.Electrical.Transmission.MediumVoltageCables.Generic Generic Data record for a generic medium voltage cable

Buildings.Electrical.Transmission.MediumVoltageCables.Annealed_Al_10 Buildings.Electrical.Transmission.MediumVoltageCables.Annealed_Al_10

Annealed Al cable - AWG 1/0

Information

Annealed aluminium cable with a cross-sectional AWG 1/0 (American Wire Gauge). This type of cable has the following properties

Rdc  = 0.551181e-3 // Characteristic DC resistance at T = T_ref[Ohm/m]
T_ref= 298.15      // Reference temperature of the material [K]
d    = 9.195e-3    // Inner diameter [m]
D    = 26.543e-3   // Outer diameter [m]
Amp  = 195         // Ampacity [A]

Extends from Buildings.Electrical.Transmission.MediumVoltageCables.Generic (Data record for a generic medium voltage cable).

Parameters

TypeNameDefaultDescription
MaterialmaterialTypes.Material.AlMaterial of the cable
CurrentAmp195Ampacitance of the cable [A]
TemperatureT_ref298.15Reference cable temperature [K]
TemperatureM228.1 + 273.15Temperature constant of the material [K]
Stringsize"1/0"AWG or kcmil code representing the conductor size
CharacteristicResistanceRdc0.551181e-3Characteristic DC resistance of the cable @ T_ref [Ohm/m]
Lengthd9.195e-3Inner diameter [m]
LengthD26.543e-3Outer diameter [m]
LengthGMRBuildings.Electrical.Transmi...Geometrical Mean Radius of the cable [m]
LengthGMDBuildings.Electrical.Transmi...Geometrical Mean Diameter of the cable [m]

Modelica definition

record Annealed_Al_10 "Annealed Al cable - AWG 1/0" extends Buildings.Electrical.Transmission.MediumVoltageCables.Generic( material=Types.Material.Al, M = 228.1 + 273.15, size="1/0", Rdc=0.551181e-3, T_ref=298.15, d=9.195e-3, D=26.543e-3, GMR=Buildings.Electrical.Transmission.Functions.computeGMR(d), GMD=Buildings.Electrical.Transmission.Functions.computeGMD(0.1905), Amp=195); end Annealed_Al_10;

Buildings.Electrical.Transmission.MediumVoltageCables.Annealed_Al_1000 Buildings.Electrical.Transmission.MediumVoltageCables.Annealed_Al_1000

Annealed Al cable - AWG 1000

Information

Annealed aluminium cable with a cross-sectional kcmil 1000 (thousand of Circular Mils). This type of cable has the following properties

Rdc  = 5.80709e-5  // Characteristic DC resistance at T = T_ref[Ohm/m]
T_ref= 298.15      // Reference temperature of the material [K]
d    = 28.372e-3   // Inner diameter [m]
D    = 46.101e-3   // Outer diameter [m]
Amp  = 640         // Ampacity [A]

Extends from Buildings.Electrical.Transmission.MediumVoltageCables.Generic (Data record for a generic medium voltage cable).

Parameters

TypeNameDefaultDescription
MaterialmaterialTypes.Material.AlMaterial of the cable
CurrentAmp640Ampacitance of the cable [A]
TemperatureT_ref298.15Reference cable temperature [K]
TemperatureM228.1 + 273.15Temperature constant of the material [K]
Stringsize"1000"AWG or kcmil code representing the conductor size
CharacteristicResistanceRdc5.80709e-5Characteristic DC resistance of the cable @ T_ref [Ohm/m]
Lengthd28.372e-3Inner diameter [m]
LengthD46.101e-3Outer diameter [m]
LengthGMRBuildings.Electrical.Transmi...Geometrical Mean Radius of the cable [m]
LengthGMDBuildings.Electrical.Transmi...Geometrical Mean Diameter of the cable [m]

Modelica definition

record Annealed_Al_1000 "Annealed Al cable - AWG 1000" extends Buildings.Electrical.Transmission.MediumVoltageCables.Generic( material=Types.Material.Al, M = 228.1 + 273.15, size="1000", Rdc=5.80709e-5, T_ref=298.15, d=28.372e-3, D=46.101e-3, GMR=Buildings.Electrical.Transmission.Functions.computeGMR(d), GMD=Buildings.Electrical.Transmission.Functions.computeGMD(0.1905), Amp=640); end Annealed_Al_1000;

Buildings.Electrical.Transmission.MediumVoltageCables.Annealed_Al_1500 Buildings.Electrical.Transmission.MediumVoltageCables.Annealed_Al_1500

Annealed Al cable - AWG 1500

Information

Annealed aluminium cable with a cross-sectional kcmil 1500 (thousand of Circular Mils). This type of cable has the following properties

Rdc  = 3.87139e-5 // Characteristic DC resistance at T = T_ref[Ohm/m]
T_ref= 298.15      // Reference temperature of the material [K]
d    = 34.798e-3   // Inner diameter [m]
D    = 53.34e-3   // Outer diameter [m]
Amp  = 800         // Ampacity [A]

Extends from Buildings.Electrical.Transmission.MediumVoltageCables.Generic (Data record for a generic medium voltage cable).

Parameters

TypeNameDefaultDescription
MaterialmaterialTypes.Material.AlMaterial of the cable
CurrentAmp800Ampacitance of the cable [A]
TemperatureT_ref298.15Reference cable temperature [K]
TemperatureM228.1 + 273.15Temperature constant of the material [K]
Stringsize"1500"AWG or kcmil code representing the conductor size
CharacteristicResistanceRdc3.87139e-5Characteristic DC resistance of the cable @ T_ref [Ohm/m]
Lengthd34.798e-3Inner diameter [m]
LengthD53.34e-3Outer diameter [m]
LengthGMRBuildings.Electrical.Transmi...Geometrical Mean Radius of the cable [m]
LengthGMDBuildings.Electrical.Transmi...Geometrical Mean Diameter of the cable [m]

Modelica definition

record Annealed_Al_1500 "Annealed Al cable - AWG 1500" extends Buildings.Electrical.Transmission.MediumVoltageCables.Generic( material=Types.Material.Al, M = 228.1 + 273.15, size="1500", Rdc=3.87139e-5, T_ref=298.15, d=34.798e-3, D=53.34e-3, GMR=Buildings.Electrical.Transmission.Functions.computeGMR(d), GMD=Buildings.Electrical.Transmission.Functions.computeGMD(0.1905), Amp=800); end Annealed_Al_1500;

Buildings.Electrical.Transmission.MediumVoltageCables.Annealed_Al_30 Buildings.Electrical.Transmission.MediumVoltageCables.Annealed_Al_30

Annealed Al cable - AWG 3/0

Information

Annealed aluminium cable with a cross-sectional AWG 2/0 (American Wire Gauge). This type of cable has the following properties

Rdc  = 0.344488e-3 // Characteristic DC resistance at T = T_ref[Ohm/m]
T_ref= 298.15      // Reference temperature of the material [K]
d    = 11.582e-3   // Inner diameter [m]
D    = 28.956e-3   // Outer diameter [m]
Amp  = 250         // Ampacity [A]

Extends from Buildings.Electrical.Transmission.MediumVoltageCables.Generic (Data record for a generic medium voltage cable).

Parameters

TypeNameDefaultDescription
MaterialmaterialTypes.Material.AlMaterial of the cable
CurrentAmp250Ampacitance of the cable [A]
TemperatureT_ref298.15Reference cable temperature [K]
TemperatureM228.1 + 273.15Temperature constant of the material [K]
Stringsize"3/0"AWG or kcmil code representing the conductor size
CharacteristicResistanceRdc0.344488e-3Characteristic DC resistance of the cable @ T_ref [Ohm/m]
Lengthd11.582e-3Inner diameter [m]
LengthD28.956e-3Outer diameter [m]
LengthGMRBuildings.Electrical.Transmi...Geometrical Mean Radius of the cable [m]
LengthGMDBuildings.Electrical.Transmi...Geometrical Mean Diameter of the cable [m]

Modelica definition

record Annealed_Al_30 "Annealed Al cable - AWG 3/0" extends Buildings.Electrical.Transmission.MediumVoltageCables.Generic( material=Types.Material.Al, M = 228.1 + 273.15, size="3/0", Rdc=0.344488e-3, T_ref=298.15, d=11.582e-3, D=28.956e-3, GMR=Buildings.Electrical.Transmission.Functions.computeGMR(d), GMD=Buildings.Electrical.Transmission.Functions.computeGMD(0.1905), Amp=250); end Annealed_Al_30;

Buildings.Electrical.Transmission.MediumVoltageCables.Annealed_Al_350 Buildings.Electrical.Transmission.MediumVoltageCables.Annealed_Al_350

Annealed Al cable - kcmil 350

Information

Annealed aluminium cable with a cross-sectional kcmil 350 (thousand of Circular Mils). This type of cable has the following properties

Rdc  = 0.165682e-3 // Characteristic DC resistance at T = T_ref[Ohm/m]
T_ref= 298.15      // Reference temperature of the material [K]
d    = 16.789e-3   // Inner diameter [m]
D    = 34.417e-3   // Outer diameter [m]
Amp  = 375         // Ampacity [A]

Extends from Buildings.Electrical.Transmission.MediumVoltageCables.Generic (Data record for a generic medium voltage cable).

Parameters

TypeNameDefaultDescription
MaterialmaterialTypes.Material.AlMaterial of the cable
CurrentAmp375Ampacitance of the cable [A]
TemperatureT_ref298.15Reference cable temperature [K]
TemperatureM228.1 + 273.15Temperature constant of the material [K]
Stringsize"350"AWG or kcmil code representing the conductor size
CharacteristicResistanceRdc0.165682e-3Characteristic DC resistance of the cable @ T_ref [Ohm/m]
Lengthd16.789e-3Inner diameter [m]
LengthD34.417e-3Outer diameter [m]
LengthGMRBuildings.Electrical.Transmi...Geometrical Mean Radius of the cable [m]
LengthGMDBuildings.Electrical.Transmi...Geometrical Mean Diameter of the cable [m]

Modelica definition

record Annealed_Al_350 "Annealed Al cable - kcmil 350" extends Buildings.Electrical.Transmission.MediumVoltageCables.Generic( material=Types.Material.Al, M = 228.1 + 273.15, size="350", Rdc=0.165682e-3, T_ref=298.15, d=16.789e-3, D=34.417e-3, GMR=Buildings.Electrical.Transmission.Functions.computeGMR(d), GMD=Buildings.Electrical.Transmission.Functions.computeGMD(0.1905), Amp=375); end Annealed_Al_350;

Buildings.Electrical.Transmission.MediumVoltageCables.Annealed_Al_40 Buildings.Electrical.Transmission.MediumVoltageCables.Annealed_Al_40

Annealed Al cable - AWG 4/0

Information

Annealed aluminium cable with a cross-sectional AWG 4/0 (American Wire Gauge). This type of cable has the following properties

Rdc  = 0.274278e-3 // Characteristic DC resistance at T = T_ref[Ohm/m]
T_ref= 298.15      // Reference temperature of the material [K]
d    = 13.005e-3   // Inner diameter [m]
D    = 30.353e-3   // Outer diameter [m]
Amp  = 285         // Ampacity [A]

Extends from Buildings.Electrical.Transmission.MediumVoltageCables.Generic (Data record for a generic medium voltage cable).

Parameters

TypeNameDefaultDescription
MaterialmaterialTypes.Material.AlMaterial of the cable
CurrentAmp285Ampacitance of the cable [A]
TemperatureT_ref298.15Reference cable temperature [K]
TemperatureM228.1 + 273.15Temperature constant of the material [K]
Stringsize"4/0"AWG or kcmil code representing the conductor size
CharacteristicResistanceRdc0.274278e-3Characteristic DC resistance of the cable @ T_ref [Ohm/m]
Lengthd13.005e-3Inner diameter [m]
LengthD30.353e-3Outer diameter [m]
LengthGMRBuildings.Electrical.Transmi...Geometrical Mean Radius of the cable [m]
LengthGMDBuildings.Electrical.Transmi...Geometrical Mean Diameter of the cable [m]

Modelica definition

record Annealed_Al_40 "Annealed Al cable - AWG 4/0" extends Buildings.Electrical.Transmission.MediumVoltageCables.Generic( material=Types.Material.Al, M = 228.1 + 273.15, size="4/0", Rdc=0.274278e-3, T_ref=298.15, d=13.005e-3, D=30.353e-3, GMR=Buildings.Electrical.Transmission.Functions.computeGMR(d), GMD=Buildings.Electrical.Transmission.Functions.computeGMD(0.1905), Amp=285); end Annealed_Al_40;

Buildings.Electrical.Transmission.MediumVoltageCables.Annealed_Al_500 Buildings.Electrical.Transmission.MediumVoltageCables.Annealed_Al_500

Annealed Al cable - AWG 500

Information

Annealed aluminium cable with a cross-sectional kcmil 500 (thousand of Circular Mils). This type of cable has the following properties

Rdc  = 0.116142e-3 // Characteristic DC resistance at T = T_ref[Ohm/m]
T_ref= 298.15      // Reference temperature of the material [K]
d    = 20.066e-3   // Inner diameter [m]
D    = 37.592e-3   // Outer diameter [m]
Amp  = 450         // Ampacity [A]

Extends from Buildings.Electrical.Transmission.MediumVoltageCables.Generic (Data record for a generic medium voltage cable).

Parameters

TypeNameDefaultDescription
MaterialmaterialTypes.Material.AlMaterial of the cable
CurrentAmp450Ampacitance of the cable [A]
TemperatureT_ref298.15Reference cable temperature [K]
TemperatureM228.1 + 273.15Temperature constant of the material [K]
Stringsize"500"AWG or kcmil code representing the conductor size
CharacteristicResistanceRdc0.116142e-3Characteristic DC resistance of the cable @ T_ref [Ohm/m]
Lengthd20.066e-3Inner diameter [m]
LengthD37.592e-3Outer diameter [m]
LengthGMRBuildings.Electrical.Transmi...Geometrical Mean Radius of the cable [m]
LengthGMDBuildings.Electrical.Transmi...Geometrical Mean Diameter of the cable [m]

Modelica definition

record Annealed_Al_500 "Annealed Al cable - AWG 500" extends Buildings.Electrical.Transmission.MediumVoltageCables.Generic( material=Types.Material.Al, M = 228.1 + 273.15, size="500", Rdc=0.116142e-3, T_ref=298.15, d=20.066e-3, D=37.592e-3, GMR=Buildings.Electrical.Transmission.Functions.computeGMR(d), GMD=Buildings.Electrical.Transmission.Functions.computeGMD(0.1905), Amp=450); end Annealed_Al_500;

Buildings.Electrical.Transmission.MediumVoltageCables.Generic Buildings.Electrical.Transmission.MediumVoltageCables.Generic

Data record for a generic medium voltage 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.

Extends from Modelica.Icons.MaterialProperty (Icon for property classes), Buildings.Electrical.Transmission.BaseClasses.BaseCable (Record that contains the properties of a generic cable).

Parameters

TypeNameDefaultDescription
MaterialmaterialBuildings.Electrical.Transmi...Material of the cable
CurrentAmp0.0Ampacitance of the cable [A]
TemperatureT_ref298.15Reference cable temperature [K]
TemperatureM228.1 + 273.15Temperature constant of the material [K]
Stringsize AWG or kcmil code representing the conductor size
CharacteristicResistanceRdc Characteristic DC resistance of the cable @ T_ref [Ohm/m]
Lengthd Inner diameter [m]
LengthD Outer diameter [m]
LengthGMR Geometrical Mean Radius of the cable [m]
LengthGMD Geometrical Mean Diameter of the cable [m]

Modelica definition

record Generic "Data record for a generic medium voltage cable" extends Modelica.Icons.MaterialProperty; extends Buildings.Electrical.Transmission.BaseClasses.BaseCable; parameter String size(start="") "AWG or kcmil code representing the conductor size"; parameter Buildings.Electrical.Types.CharacteristicResistance Rdc(start=0) "Characteristic DC resistance of the cable @ T_ref"; parameter Modelica.Units.SI.Length d "Inner diameter"; parameter Modelica.Units.SI.Length D "Outer diameter"; parameter Modelica.Units.SI.Length GMR "Geometrical Mean Radius of the cable"; parameter Modelica.Units.SI.Length GMD "Geometrical Mean Diameter of the cable"; redeclare function extends lineResistance "Function that computes the resistance of a cable" input Buildings.Electrical.Transmission.MediumVoltageCables.Generic cable "Record that contains cable properties"; algorithm R := l*cable.Rdc*Buildings.Electrical.Transmission.Functions.R_AC_correction( cable.size, cable.material); end lineResistance; redeclare function extends lineInductance "Function that computes the resistance of a cable" input Buildings.Electrical.Transmission.MediumVoltageCables.Generic cable "Record that contains cable properties"; algorithm L := l*2e-7*log(cable.GMD/cable.GMR); end lineInductance; redeclare function extends lineCapacitance "Function that computes the capacitance of a cable" input Buildings.Electrical.Transmission.MediumVoltageCables.Generic cable "Record that contains cable properties"; protected Modelica.Units.SI.Length r "Radius"; algorithm r := cable.d/2.0; C := l*2*Modelica.Constants.pi*Modelica.Constants.epsilon_0/log(cable.GMD/r); end lineCapacitance; end Generic;