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PI Section, 3-ph

Description

The PI line model is mainly used for short transmission lines. The equivalent circuit is shown below.

It is assumed that the capacitance on both sides is identical. The RL branches are also coupled.



Table of Contents



Mask and Parameters

General 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'}

EMTP (.pun) file for line parameters calculation

The location (path) of the EMTP file (pun file) containing the line parameters. However,

the EMTP “.pun” format is not allowed with this model



File = {'path.name'}

Type

The line data can be taken using Matrix or Sequence parameters  



Matrix/Sequence = { 0, 1}

Matrix {0}

Untransposed line. The data is filled in the matrices

Sequence {1}

Transposed line. The data is filled in the sequences

Line Length

The length of the line

km

length = {0, 1e64}

Base power (perPhase)

Base value for PU conversion

MVA per phase

pBase = { [1, 1e64] }

Base voltage (rmsLN)

Base value for PU conversion

kV rms LN

vBase = { [1, 1e64] }

Base frequecy

Base value for PU conversion

Hz

fBase = { [1, 1e64] }

Matrix Parameters

Name

Description

Unit

Variable = {Possible Values}

Name

Description

Unit

Variable = {Possible Values}

Resistance - R

Resistance matrix

Ω/km

R = {'-1e64, 1e64'}

Inductance - L

Inductance matrix

H/km

L = {'-1e64, 1e64'}

Capacitance - C

Capacitance matrix

F/km

= {'-1e64, 1e64'}

Sequence Parameters

Name

Description

Unit

Variable = {Possible Values}

Name

Description

Unit

Variable = {Possible Values}

R

Resistance value for Zero and Positive sequences

Ω/km

Rseq = {'-1e64, 1e64'}

L

Inductance value for Zero and Positive sequences

H/km

Lseq = {'-1e64, 1e64'}

C

Capacitance value for Zero and Positive sequences

F/km

Cseq = {'-1e64, 1e64'}

Line Generator

For more information see 

 

Calculation of Electrical Parameters

The EMTP “.pun” format is not allowed with this model. However, the electrical parameters of PI lines can be calculated by using the  .

Ports, Inputs, Outputs and Signals Available for Monitoring

Ports

This component supports a 3-phase transmission line 

Name

Description

Name

Description

net_1(a,b,c)

Network connection of phases (a,b,c) of the left (+) side

net_2(a,b,c)

Network connection of phases (a,b,c) of the right side

Inputs

None

Outputs

None

Sensors

At acquisition, the signals available by the sensors are:

Name

Description

Unit

Name

Description

Unit

I1(a,b,c)

Current in each phase at left (+) end

A

I2(a,b,c)

Current in each phase at right end

A



 

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