Mask and Parameters

The calculation of the electrical parameters of a line from its geometrical parameters can be done with the Line Data auxiliary module.

The resulting EMTP output file (*.pun) contains the electrical line parameters required by HYPERSIM. The user can manually fill in the data form. However, ideally, the user provides the parameters of an FD line by loading the pun file in the data form.

General Parameters

Name	Description	Unit	Variable = {Possible Values}
Description	Use this field to add information about the component		Description = {'string'}
EMTP (.pun) file for line parameters	The location (path) of the EMTP file (pun file) containing the line parameters		File = {'path.name'}
Transformation matrix	Transformation matrix (6 x 6)		Ti = { [-1e64, 1e64] }
Line Length	The length of the line	km	length = {0, 1e64}
Number of poles for the weighting function	Number of poles for each phase (mode) of the propagation function		nA = { [0, 1, ..., 39, 40] }
Number of poles for the impedance function	Number of poles for each phase (mode) of the characteristic impedance function		nZ = { [0, 1, ..., 39, 40] }
First coefficient for characteristic impedance	First coefficient for each phase (mode) of the characteristic impedance, i.e., the resistance value for infinite frequency	Ω	Ro = { [-1e64, 1e64] }
Propagation delay	Propagation delay for each phase	s	To = { [-1e64, 1e64] }

Impedance Parameters

Name	Description		Unit	Variable = {Possible Values}
Impedance function coefficients	Residues of the impedance function for each phase			KZ = { [-1e64, 1e64] }
Impedance function poles	Poles of the impedance function for each phase			PZ = { [-1e64, 1e64] }

Weighting Parameters

Name	Description		Unit	Variable = {Possible Values}
Weighting function coefficients	Residues of the weighting (propagation) function for each phase			KA = { [-1e64, 1e64] }
Weighting function poles	Poles of the weighting (propagation) function for each phase			PA = { [-1e64, 1e64] }

Ports, Inputs, Outputs and Signals Available for Monitoring

Ports

This component supports a 3-phase transmission line

Name	Description
net_1_1	Network connection of phase 1 left (+) side
net_1_2	Network connection of phase 1 right side
net_2_1	Network connection of phase 2 left (+) side
net_2_2	Network connection of phase 2 right side
net_3_1	Network connection of phase 3 left (+) side
net_3_2	Network connection of phase 3 right side

Inputs

None

Outputs

None

Sensors

At acquisition, the signals available by the sensors are:

Name	Description	Unit
*V_Node(1,2,3)_(1,2)*	Bus voltage for each phase (1,2,3)	V
*I(1,2,3)_Node(1,2,3)_(1,2)*	Current for each phase (1,2,3)	A

The (1,2) in the previous table indicates the name of the bus at each end of the line (1 for left (+) side and 2 for the right side)

The Data of a 3-phase FD Line Model

The following figure shows the geometrical data of a 735-kV transmission line as an example to simulate a 3-phase FD model.

The calculation of the electrical parameters can be done with the Line Data auxiliary module. The EMTP-type output file for the calculation of the parameters for the FD line model:

A portion of the pun file generated with the Line Data auxiliary module:

Reference

J. R. Marti, "Accurate modelling of frequency-dependent transmission lines in electromagnetic transient simulations," IEEE Trans. Power App. Syst., vol. PAS-101, pp. 147-55, 01/1982.

HYPERSIM Documentation

Frequency Dependent, 3-ph

Description