modelLine_MT

Transmission Line modeled as a PI element with a hybrid interface positive-sequence/three-phase
Diagram of Line_MT

Extends from Branches.BaseClasses.baseLine (Partial base power line model).

Information

This model was design to represent a hybrid positive-sequence/three-phase power line.

The user should input the series conductance and susceptance, and half shunt susceptance (line charging). All in matrix form, since this model can be used to represent unbalanced lines. Series conductance (Gser) matrix is considered to have the following structure:

[Gseraa, Gserab, Gserac;

Gserab, Gserbb, Gserbc;

Gserac, Gserbc, Gsercc]

Series susceptance (Bser) matrix is considered to have the following structure:

[Bseraa, Bserab, Bserac;

Bserab, Bserbb, Bserbc;

Bserac, Bserbc, Bsercc]

The series admittance matrix is Yser = Gser+jBser. Each of the two shunt susceptance (Bsht) matrices is considered to have the following structure:

[Bshtaa, Bshtab, Bshtac;

Bshtab, Bshtbb, Bshtbc;

Bshtac, Bshtbc, Bshtcc]

In addition to that, the user should also state if the hybrid interface should be calculated in an approximate or exact way. If the exact way is selected, the user should also input Norton equivalent admittances for positive, negative and zero sequences calculated in the point of interconnection of the hybrid device. If approximate model is selected, these admittances are set to be zero. Based on the set of parameters selected by the user, the pi-equivalent impedance matrices are calculated and the line equation is assembled.

The positive-sequence system is connected using pin p, while three-phase system is connected using pins A, B, and C

Parameters

TypeNameDefaultDescription
Power flow data
Types.ApparentPowerS (from baseLine)SysData.S_bNominal Power
Types.Frequencyf (from baseLine)SysData.fnSystem Frequency
Selection of model
IntegerModelType00- Assuming that the negative and zero norton admittances are infinite (Approximation), 1- Considering that the negative and zero norton admittances finite values;
Parameters for an 'abc'-Model
Types.PerUnitGseraa0Element (1,1) in series conductance matrix
Types.PerUnitBseraa-10Element (1,1) in series susceptance matrix
Types.PerUnitGserab0Element (1,2) in series conductance matrix
Types.PerUnitBserab0Element (1,2) in series susceptance matrix
Types.PerUnitGserac0Element (1,3) in series conductance matrix
Types.PerUnitBserac0Element (1,3) in series susceptance matrix
Types.PerUnitGserbb0Element (2,2) in series conductance matrix
Types.PerUnitBserbb-10Element (2,2) in series susceptance matrix
Types.PerUnitGserbc0Element (2,3) in series conductance matrix
Types.PerUnitBserbc0Element (2,3) in series susceptance matrix
Types.PerUnitGsercc0Element (3,3) in series conductance matrix
Types.PerUnitBsercc-10Element (3,3) in series susceptance matrix
Types.PerUnitBshtaa0Element (1,1) in shunt half susceptance matrix
Types.PerUnitBshtab0Element (1,2) in shunt half susceptance matrix
Types.PerUnitBshtac0Element (1,3) in shunt half susceptance matrix
Types.PerUnitBshtbb0Element (2,2) in shunt half susceptance matrix
Types.PerUnitBshtbc0Element (2,3) in shunt half susceptance matrix
Types.PerUnitBshtcc0Element (3,3) in shunt half susceptance matrix
Norton equivalent admittances in terminal K - Considering the negative and zero norton admittances have finite values
Types.PerUnitG_00Zero-sequence Norton equivalent conductance
Types.PerUnitB_00Zero-sequence Norton equivalent susceptance
Types.PerUnitG_10Positive-sequence Norton equivalent conductance
Types.PerUnitB_10Positive-sequence Norton equivalent susceptance
Types.PerUnitG_20Negative-sequence Norton equivalent conductance
Types.PerUnitB_20Negative-sequence Norton equivalent susceptance

Connectors

TypeNameDefaultDescription
OpenIPSL.Interfaces.PwPinp
OpenIPSL.Interfaces.PwPinA
OpenIPSL.Interfaces.PwPinB
OpenIPSL.Interfaces.PwPinC

Components

TypeNameDefaultDescription
OpenIPSL.Electrical.SystemBaseSysData (from baseLine)

Contents

NameDescription
Modelprotected