Buildings.Electrical.Transmission.Grids

Package that contains different types of grids

Information

This package contains different types of grids that can be used to represent electrical networks. The topology of the network is specified by

the number of nodes,
the number of links,
the length of links, and
the connection between links and nodes.

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

Package Content

Name	Description
IEEE_34_AL120	Grid model inspired to the IEEE 34 Node test feeder
PartialGrid	Partial model that represents a generalized grid
TestGrid2Nodes	Simple model of a grid with 2 nodes and 1 link
TestGrid2NodesMedium	Simple model of a grid with 2 nodes and 1 link for medium voltage

Buildings.Electrical.Transmission.Grids.IEEE_34_AL120

Grid model inspired to the IEEE 34 Node test feeder

Information

This model represents a grid inspired by the IEEE 34 node test feeder. In this example, the cable types and lengths have been modified in order to represent a typical distribution feeder.

The following three type of cables are in the grid: AL120, AL70, and Al35.

alt-image

Extends from Buildings.Electrical.Transmission.Grids.PartialGrid (Partial model that represents a generalized grid).

Parameters

Type	Name	Default	Description
Integer	nNodes	34	Number of nodes of the grid
Integer	nLinks	33	Number of links connecting the nodes
Integer	fromTo[nLinks, 2]	[[1, 2]; [2, 3]; [3, 4]; [4,...	Indexes [i,1]->[i,2] of the nodes connected by link i
Length	l[nLinks, 1]	[48; 16; 16; 40; 32; 16; 16;...	Length of the cable [m]

Modelica definition

record IEEE_34_AL120 "Grid model inspired to the IEEE 34 Node test feeder" extends Buildings.Electrical.Transmission.Grids.PartialGrid( nNodes=34, nLinks=33, l=[48; 16; 16; 40; 32; 16; 16; 16; 16; 16; 16; 32; 32; 16; 32; 32; 32; 48; 48; 32; 32; 16; 16; 16; 16; 16; 32; 32; 16; 32; 16; 16; 16], fromTo=[[1, 2]; [2, 3]; [3, 4]; [4, 5]; [4, 6]; [6, 7]; [7, 8]; [9, 26]; [10, 26]; [11, 9]; [12, 11]; [13, 10]; [14, 10]; [15, 14]; [16, 15]; [17, 27]; [18, 27]; [19, 31]; [20, 31]; [21, 32]; [22, 32]; [23, 20]; [24, 23]; [25, 24]; [26, 8]; [27, 29]; [28, 16]; [29, 16]; [30, 17]; [31, 17]; [32, 19]; [33, 22]; [34, 18]], redeclare Buildings.Electrical.Transmission.LowVoltageCables.Generic cables ={LowVoltageCables.PvcAl120(),LowVoltageCables.PvcAl120(), LowVoltageCables.PvcAl120(),LowVoltageCables.PvcAl120(), LowVoltageCables.PvcAl120(),LowVoltageCables.PvcAl120(), LowVoltageCables.PvcAl120(),LowVoltageCables.PvcAl120(), LowVoltageCables.PvcAl120(),LowVoltageCables.PvcAl120(), LowVoltageCables.PvcAl120(),LowVoltageCables.PvcAl120(), LowVoltageCables.PvcAl120(),LowVoltageCables.PvcAl120(), LowVoltageCables.PvcAl120(),LowVoltageCables.PvcAl70(), LowVoltageCables.PvcAl70(),LowVoltageCables.PvcAl35(), LowVoltageCables.PvcAl35(),LowVoltageCables.PvcAl35(), LowVoltageCables.PvcAl35(),LowVoltageCables.PvcAl35(), LowVoltageCables.PvcAl35(),LowVoltageCables.PvcAl35(), LowVoltageCables.PvcAl120(),LowVoltageCables.PvcAl70(), LowVoltageCables.PvcAl70(),LowVoltageCables.PvcAl70(), LowVoltageCables.PvcAl70(),LowVoltageCables.PvcAl70(), LowVoltageCables.PvcAl35(),LowVoltageCables.PvcAl35(), LowVoltageCables.PvcAl70()}); /* LEFT HERE TO CHECK CONSISTENCY LenVec={ 0,48,16,16,40, 32,16,16,16,16, 16,16,32,32,16, 32,32,32,48,48, 32,32,16,16,16, 16,16,32,32,16, 32,16,16,16}, CabTyp={ ,.PvcAl120(),.PvcAl120(),.PvcAl120(),.PvcAl120(), .PvcAl120(),.PvcAl120(),.PvcAl120(),.PvcAl120(),.PvcAl120(), .PvcAl120(),.PvcAl120(),.PvcAl120(),.PvcAl120(),.PvcAl120(), .PvcAl120(),.PvcAl70(),.PvcAl70(),.PvcAl35(),.PvcAl35(), .PvcAl35(),.PvcAl35(),.PvcAl35(),.PvcAl35(),.PvcAl35(), .PvcAl120(),.PvcAl70(),.PvcAl70(),.PvcAl70(),.PvcAl70(), .PvcAl70(),.PvcAl35(),.PvcAl35(),.PvcAl70()}); */ end IEEE_34_AL120;

Buildings.Electrical.Transmission.Grids.PartialGrid

Partial model that represents a generalized grid

Information

This abstract grid model specifies the topology of the network by

the number of nodes,
the number of links,
the length of links, and
the connection between links and nodes.

The picture below describes the meaning of the values contained in the matrices.

Extends from Modelica.Icons.MaterialProperty (Icon for property classes).

Parameters

Type	Name	Default	Description
Integer	nNodes		Number of nodes of the grid
Integer	nLinks		Number of links connecting the nodes
Integer	fromTo[nLinks, 2]		Indexes [i,1]->[i,2] of the nodes connected by link i
Length	l[nLinks, 1]		Length of the cable [m]
BaseCable	cables[nLinks]	redeclare Buildings.Electric...	Array that contains the characteristics of each cable

Modelica definition

record PartialGrid "Partial model that represents a generalized grid" extends Modelica.Icons.MaterialProperty; parameter Integer nNodes "Number of nodes of the grid"; parameter Integer nLinks "Number of links connecting the nodes"; parameter Integer fromTo[nLinks, 2] "Indexes [i,1]->[i,2] of the nodes connected by link i"; parameter Modelica.SIunits.Length l[nLinks, 1](each min=0) "Length of the cable"; replaceable Buildings.Electrical.Transmission.BaseClasses.BaseCable cables[ nLinks] "Array that contains the characteristics of each cable"; end PartialGrid;

Buildings.Electrical.Transmission.Grids.TestGrid2Nodes

Simple model of a grid with 2 nodes and 1 link

Information

This model represents a simple grid with two nodes and a single link between them.

The picture below describes the grid topology.

Extends from Buildings.Electrical.Transmission.Grids.PartialGrid (Partial model that represents a generalized grid).

Parameters

Type	Name	Default	Description
Integer	nNodes	2	Number of nodes of the grid
Integer	nLinks	1	Number of links connecting the nodes
Integer	fromTo[nLinks, 2]	[[1, 2]]	Indexes [i,1]->[i,2] of the nodes connected by link i
Length	l[nLinks, 1]	[200]	Length of the cable [m]

Modelica definition

record TestGrid2Nodes "Simple model of a grid with 2 nodes and 1 link" extends Buildings.Electrical.Transmission.Grids.PartialGrid( nNodes=2, nLinks=1, fromTo=[[1, 2]], l=[200], redeclare Buildings.Electrical.Transmission.LowVoltageCables.Generic cables ={LowVoltageCables.Cu35()}); end TestGrid2Nodes;

Buildings.Electrical.Transmission.Grids.TestGrid2NodesMedium

Simple model of a grid with 2 nodes and 1 link for medium voltage

Information

This model represents a simple grid with two nodes and a single link between them. This model differs from Buildings.Electrical.Transmission.Grids.TestGrid2Nodes because it defines a medium voltage cable instead of a low voltage cable.

The picture below describes the grid topology.

Extends from Buildings.Electrical.Transmission.Grids.PartialGrid (Partial model that represents a generalized grid).

Parameters

Type	Name	Default	Description
Integer	nNodes	2	Number of nodes of the grid
Integer	nLinks	1	Number of links connecting the nodes
Integer	fromTo[nLinks, 2]	[[1, 2]]	Indexes [i,1]->[i,2] of the nodes connected by link i
Length	l[nLinks, 1]	[200]	Length of the cable [m]

Modelica definition

record TestGrid2NodesMedium "Simple model of a grid with 2 nodes and 1 link for medium voltage" extends Buildings.Electrical.Transmission.Grids.PartialGrid( nNodes=2, nLinks=1, fromTo=[[1, 2]], l=[200], redeclare Buildings.Electrical.Transmission.MediumVoltageCables.Generic cables={MediumVoltageCables.Annealed_Al_30()}); end TestGrid2NodesMedium;