The Lines/Cables menu has several sub-menus for different types of line models. Available line models are: Lumped parameter models (RLC p, RL coupled), distributed parameter lines with constant (i.e. frequency independent) parameters, lines and cables with constant or frequency dependent parameters (Bergeron, PI, Jmarti, Noda or Semlyen), calculated by means of the LINE CONSTANTS, CABLE CONSTANTS or CABLE PARAMETERS supporting routine of ATP-EMTP.
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Fig. 4.69 – PI-equivalents with electrical data input. |
Lumped parameter line models
RLC Pi-equiv. 1: These line models are simple, lumped, p-equivalents of ATP Type 1, 2, 3 etc. branches of ATP.
RL Coupled 51: These line models are simple, lumped, mutually RL coupled components of Type-51, 52, 53 etc. branches of ATP.
The following selections are available in the two pop-up menus:
Selection |
Object name |
Icon |
ATP card |
Description |
RLC Pi-equiv. 1.. +1 phase |
LINEPI_1 |
|
BRANCH type 1 |
Single phase RLC p-equivalent.
|
RLC Pi-equiv. 1.. + 2 phase |
LINEPI_2 |
|
BRANCH type 1-2 |
2-phase RLC p-equivalent Symmetric. |
RLC Pi-equiv. 1.. + 3 ph. Seq. |
LINEPI_3 |
|
BRANCH type 1-3 |
3-phase RLC p-equivalent Symmetric. |
RLC Pi-equiv. 1.. + 3 ph. Seq. |
LINEPI3S |
|
BRANCH type 1-3 |
3-phase RLC p-equivalent Symmetrical. |
RLC Pi-equiv. 1.. + 3x1 ph. Cable |
PI_CAB3S |
|
BRANCH type 1-3 |
3-phase RLC p-equivalent No mutual coupling |
RLC Pi-equiv. 1.. + 6 ph. indiv. transp. |
LINEPI6S |
|
BRANCH type 1-6 |
6-phase RLC p-equivalent Individually transposed circuits |
RL Coupled 51.. + 1 phase |
LINERL_1 |
|
BRANCH type 51 |
Single phase RL coupled line model. |
RL Coupled 51.. + 2 phase |
LINERL_2 |
|
BRANCH type 51-52 |
2-phase RL coupled line model. Smmetric. |
RL Coupled 51.. + 3 phase |
LINERL_3 |
|
BRANCH type 51-53 |
3-phase RL coupled line model. Symmetric. 3-phase nodes. |
RL Coupled 51.. + 3 ph. Seq. |
LINERL3S |
|
BRANCH type 51-53 |
3-phase RL coupled line model with sequence impedance (0, +) input. Symmetric. |
RL Coupled 51.. + 6 ph. indiv. transp. |
LINERL6S |
|
BRANCH type 51-56 |
6-phase RL coupled line model with individually transposed circuits. |
RL Coupled 51.. + 6 ph. full transp. |
LINERL6N |
|
BRANCH type 51-56 |
6-phase RL coupled line model with full transposition. |
RL Coupled 51.. + 6 phase L+Rs |
LINERL_6 |
|
BRANCH type 51-56 |
2x3 phase RL coupled line model. Non-symmetric. Off-diagonal R is set to zero. |
RL Sym. 51 + 3 ph. seq. 012 |
LINERL012 |
|
BRANCH type 51-53 |
3-phase RL coupled line model with sequence impedance (0 +-) input. Unsymmetric. |
RL Sym. 51 + 3 ph. Full matrix |
LINERL3F |
|
BRANCH type 51-53 |
3-phase RL coupled line model with full matrix input. Unsymmetric. |
Distributed parameter line models
Selecting Distributed opens a popup menu where two different types of line models can be selected: Transposed lines or Untransposed lines. Both types are distributed parameters, frequency independent lines of class Bergeron. Losses are concentrated at the terminals (R/4) and of the mid-point (R/2). The time step has to be less than half the travel time of the line.
Transposed lines (Clarke): These components can be characterized as symmetrical, distributed parameter and lumped resistance models (called as Clarke-type in the ATP Rule-Book). Six different types are supported:
Selection |
Object name |
Icon |
ATP card |
Description |
Transposed lines + 1 phase |
LINEZT_1 |
|
BRANCH type -1 |
Single phase, distributed parameter line, Clarke model. |
Transposed lines + 2 phase |
LINEZT_2 |
|
BRANCH type -1.. -2 |
2-phase, distributed parameter, transposed line, Clarke model. |
Transposed lines + 3 phase |
LINEZT_3 |
|
BRANCH type -1.. -3 |
3-phase, distributed parameter, transposed line, Clarke model. |
Transposed lines + 6 phase |
LINEZT6N |
|
BRANCH type -1.. -6 |
6-phase, distributed parameter, transposed line, Clarke model. |
Transposed lines + 6 phase mutual |
LINEZT_6 |
|
BRANCH type -1.. -6 |
2x3 phase, distributed Clarke line. With mutual coupling between the circuits. |
Transposed lines + 9 phase |
LINEZT_9 |
|
BRANCH type -1.. -9 |
9-phase, distributed parameter, transposed line, Clarke model. |
Untransposed lines (KCLee): Parameters of these nonsymmetrical lines are usually generated outside ATPDraw. These components can be characterized as untransposed, distributed parameter and lumped resistance models with real or complex modal transformation matrix (called as KCLee-type in the ATP Rule-Book). Double-phase and 3-phase types are supported:
Selection |
Object name |
Icon |
ATP card |
Description |
Untransposed lines (KCLee)+ 2 phase |
LINEZU_2 |
|
BRANCH |
2-phase, distributed parameters, untransposed (KCLee) line model with complex transf. matrix. |
Untransposed lines (KCLee)+ 3 phase |
LINEZU_3 |
|
BRANCH |
3-phase, distributed parameters, untransposed (KCLee) line model. |
LCC objects
In this part of ATPDraw, you specify the geometrical and material data for an overhead line or a cable and the corresponding electrical data are calculated automatically by the LINE CONSTANTS, CABLE CONSTANTS or CABLE PARAMETERS supporting routine of ATP-EMTP. The LCC module supports line/cable modeling with no limits on the number of phases or conductors.
To use the LCC module of ATPDraw the user must first select a line/cable component. The number of phases is selected internally in the LCC dialog box. This will display an object (3-phases default) in the circuit window that can be connected to the circuit as any other component. Clicking on this component with the right mouse button will bring up a special input dialog box called Line/Cable Data dialog box with two sub-pages: Model and Data, where the user selects between the supported System type:
•Overhead Line: LINE CONSTANTS
•Single Core Cables: CABLE PARAMETERS or CABLE CONSTANTS
•Enclosing Pipe: CABLE PARAMETERS or CABLE CONSTANTS
and Model type of the line/cable:
•Bergeron: Constant parameter KCLee or Clark models
•PI: Nominal PI-equivalent (short lines)
•Jmarti: Frequency dependent model with constant transformation matrix
•Noda: Frequency dependent model
•Semlyen: Frequency dependent simple fitted model.
The Line/Cable Data dialog box completely differs from the Component dialog of other components, therefore it is described in chapter 5.3 of the Advanced Manual. An LCC template component can be a stand-alone object written to the ATP-file, or an actual template (checkbox inside) serving as a common data source for LCC section objects using it.
Selection |
Object name |
Icon |
ATP card |
Description |
LCC template |
LCC |
|
$Include |
Multi-phase LCC object. Overhead line Single core cables Enclosing pipe Bergeron/PI/Jmarti/Semlyen/Noda |
LCC section |
LCC_ |
|
$Include |
Uses the data of an LCC template with local modification of standard data length, frequency and ground resistivity. Optional single-phase layout. |
LCC EGM |
LCC_EGM |
|
$Include |
Same as LCC_ but with an electro-geometrical model for lightning studies included. Top node to be connected to lightning source. |
Read PCH file...
ATPDraw is able to read the .pch output files obtained by external run of ATP-EMTP’s Line Constants or Cable Constants supporting routines. Selecting the Read PCH file... menu item, the program performs an Open Punch File dialog in which the available .pch files are listed. If you select a file and click Open, ATPDraw attempts to read the file and if succeed in creates a .lib file and stores it in memory in the Data Base Module format of ATP. When the .lib file is successfully created the icon of the new LCC component appears in the middle of the circuit window.