1 Mask and Parameters
2 Ports, Inputs, Outputs and Signals Available for Monitoring
3 Theoretical Background

The distributed parameters line (DPL) theory is used to represent a half of the classic constant parameter (CP) model [1]. Overall, the CP model assumes that the line parameters R, L and C are independent of the frequency effects caused by the skin effect on phase conductors and on the ground. The model considers L and C to be distributed (ideal line) and R to be lumped at three places (R/4 on both ends and R/2 in the middle). The shunt conductance G is taken as zero.

Two half CP components must be connected through transceiver elements (or real-time simulator I/Os) to represent a transmission line. Line parameters must be the same in both components. The implementation of the half CP follows the same formulation from the standard CP line [1]. However, note that with the half CP component, the propagation delay of the line is the sum of what is accounted in a buffer inside the component and what is caused by the actual delay outside the components. The latter is referred as "extra delay" in the form of the model. For the digital simulation of the model on one simulator, the actual delay is caused by the transceiver. For the simulation on 2 simulators, the actual delay includes the delay in I/O drivers.

For the three-phase version of this half CP model, please see half CP, 3-ph.

Mask and Parameters

Parameters

Name	Description				Unit	Variable = {Possible Values}

Name	Description	Unit	Variable = {Possible Values}
Description	Use this field to add information about the component		Description = {'string'}
Length	The length of the line	m	length = {'1e-12, 1e12'}
R'	Per unit length resistance	Ω/km	Resistance = {'0, 1e12'}
L'	Per unit length inductance	H/km	Inductance = {'1e-12 1e12'}
C'	Per unit length capacitance	F/km	Capacitance = {'1e-12, 1e12'}
Extra delay	The extra delay variable is an integer that refers to the number of delays produced outside the half CP components. For the digital simulation of the model on one simulator, the extra delay is caused by the transceiver. For the simulation on two simulators, the extra delay includes the delay in IO drive.		extradelaynb = { [0, 200] }

Ports, Inputs, Outputs and Signals Available for Monitoring

Ports

This component supports a single-phase transmission line

Name	Description

Name	Description
net	Power network connection of one side of the line

Inputs

Name	Description

Name	Description
hi	Historic current FROM the other side of the line

Outputs

Name	Description

Name	Description
ho	Historic current TO the other side of the line
Vt	Terminal voltage in V

Half CP, 1-ph