Multi-phase load models
This package contains different models for multi-phase loads.
Extends from Modelica.Icons.Package (Icon for standard packages).
Name | Description |
---|---|
WyeLoad_3Ph | Three-phase wye load |
WyeLoad_2Ph | Two-phase wye load |
WyeLoad_1Ph | Single-phase load |
WyeDynLoad_3Ph | Variable balanced three-phase wye load |
DeltaLoad_3Ph | Three-phase delta load |
DeltaLoad_2Ph | Two-phase delta load |
DeltaDynLoad_3Ph | Variable three-phase delta load |
Dyn_wye_3Ph_balanced | Variable balanced three-phase wye load |
Dyn_wye_3Ph_unbalanced | Variable unbalanced three-phase wye load |
Dyn_wye_2Ph_balanced | Variable balanced two-phase wye load |
Dyn_wye_2Ph_unbalanced | Variable unbalanced two-phase wye load |
Dyn_wye_1Ph | Variable single-phase load |
Three-phase wye load
This is a three-phase wye load model.
The user needs to input the active (P_a, P_b and P_c) and reactive (Q_a, Q_b and Q_c) powers consumed by each phase. Since the values come from independent parameters, the model allows the representation of unbalanced loads.
In addition, the model allows the load to be represented as constant power, or as a ZIP model. In the first approach, the powers consumed by each phase are kept constant throughout simulation. The latter approach allows the load to be represented as a sum of three terms: constant impedance, constant current and constant power. This means that, depending on voltage levels supplied, the load will consume different values of power.
Extends from ThreePhaseComponent (Partial model for inheritance of single-phase base power based on three-phase system base power.).
Name | Description |
---|---|
Power flow data | |
S_b | System base [V.A] |
S_p | Phase base [V.A] |
VA | Voltage magnitude [1] |
AngA | Voltage angle for phase A [rad] |
VB | Voltage magnitude [1] |
AngB | Voltage angle for phase B [rad] |
VC | Voltage magnitude [1] |
AngC | Voltage angle for phase C [rad] |
P_a | Initial active power [W] |
Q_a | Initial reactive power [var] |
P_b | Initial active power [W] |
Q_b | Initial reactive power [var] |
P_c | Initial active power [W] |
Q_c | Initial reactive power [var] |
Power flow | |
ModelType | 0- Constant Power Model, 1- ZIP Model; |
Load Parameters for ZIP Model | |
A_pa | Percentage of Constant Power Load for Phase A (%) |
B_pa | Percentage of Constant Current Load for Phase A (%) |
C_pa | Percentage of Constant Impedance Load for Phase A (%) |
A_pb | Percentage of Constant Power Load for Phase B (%) |
B_pb | Percentage of Constant Current Load for Phase B (%) |
C_pb | Percentage of Constant Impedance Load] for Phase B (%) |
A_pc | Percentage of Constant Power Load for Phase C (%) |
B_pc | Percentage of Constant Current Load for Phase C (%) |
C_pc | Percentage of Constant Impedance Load for Phase C (%) |
Name | Description |
---|---|
A | |
B | |
C |
Two-phase wye load
This is a two-phase wye load model.
The user needs to input the active (P_a and P_b) and reactive (Q_a and Q_b) powers consumed by each of the two phases. Since the values come from independent parameters, the model allows the representation of unbalanced loads.
In addition, the model allows the load to be represented as constant power, or as a ZIP model. In the first approach, the powers consumed by each phase are kept constant throughout simulation. The latter approach allows the load to be represented as a sum of three terms: constant impedance, constant current and constant power. This means that, depending on voltage levels supplied, the load will consume different values of power.
Extends from ThreePhaseComponent (Partial model for inheritance of single-phase base power based on three-phase system base power.).
Name | Description |
---|---|
Power flow data | |
S_b | System base [V.A] |
S_p | Phase base [V.A] |
Power flow | |
ModelType | 0- Constant Power Model, 1- ZIP Model; |
P_a | Active power for phase A [W] |
Q_a | Reactive power for phase A [var] |
P_b | Active power for phase B [W] |
Q_b | Reactive power for phase B [var] |
Initialization | |
VA | Guess value for phase A magnitude [1] |
AngA | Guess value for phase A angle [rad] |
VB | Guess value for phase B magnitude [1] |
AngB | Guess value for phase B angle [rad] |
Load Parameters for ZIP Model | |
A_pa | Percentage of Constant Power Load for Phase A [%] |
B_pa | Percentage of Constant Current Load for Phase A [%] |
C_pa | Percentage of Constant Impedance Load for Phase A [%] |
A_pb | Percentage of Constant Power Load for Phase B [%] |
B_pb | Percentage of Constant Current Load for Phase B [%] |
C_pb | Percentage of Constant Impedance Load] for Phase B [%] |
Name | Description |
---|---|
A | |
B |
Single-phase load
This is a single-phase load model.
The user needs to input the active (P_a) and reactive (Q_a) powers consumed by the phase. Since the values come from independent parameters, the model allows the representation of unbalanced loads.
In addition, the model allows the load to be represented as constant power, or as a ZIP model. In the first approach, the load consumes the same value of active and reactive powers throughout the simulation. The latter approach allows the load to be represented as a sum of three terms: constant impedance, constant current and constant power. This means that, depending on voltage levels supplied, the load will consume different values of power.
Extends from ThreePhaseComponent (Partial model for inheritance of single-phase base power based on three-phase system base power.).
Name | Description |
---|---|
ModelType | 0- Constant Power Model, 1- ZIP Model; |
Power flow data | |
S_b | System base [V.A] |
S_p | Phase base [V.A] |
VA | Voltage magnitude [1] |
AngA | Voltage angle for phase A [rad] |
P_a | Initial active power [W] |
Q_a | Initial reactive power [var] |
Load Parameters for ZIP Model | |
A_pa | Percentage of Constant Power Load for Phase A [%] |
B_pa | Percentage of Constant Current Load for Phase A [%] |
C_pa | Percentage of Constant Impedance Load for Phase A [%] |
Name | Description |
---|---|
A |
Variable balanced three-phase wye load
This is a three-phase wye load model that allows the user to vary the power consumed during the simulation.
The user needs to input the active (P_a, P_b and P_c) and reactive (Q_a, Q_b and Q_c) powers consumed by each phase. Since the values come from independent parameters, the model allows the representation of unbalanced loads.
In addition, the model allows the load to be represented as constant power, or as a ZIP model. In the first approach, the load consumes the same value of active and reactive powers by each phase throughout the simulation. The latter approach allows the load to be represented as a sum of three terms: constant impedance, constant current and constant power. This means that, depending on voltage levels supplied, the load will consume different values of power.
In addition to that, the real input DynFact multiplies the power being consumed by the load. This allows the load to vary over time during the simulation. It is also important to note that DynFact multiplies all variables P_a, P_b, P_c, Q_a, Q_b and Q_c. That means that this model does not allow load variation to be performed only in selected variables.
Extends from ThreePhaseComponent (Partial model for inheritance of single-phase base power based on three-phase system base power.).
Name | Description |
---|---|
Power flow data | |
S_b | System base [V.A] |
S_p | Phase base [V.A] |
Power flow | |
ModelType | 0- Constant Power Model, 1- ZIP Model; |
P_a | Base Active power for phase A [W] |
Q_a | Base Reactive power for phase A [var] |
P_b | Base Active power for phase B [W] |
Q_b | Base Reactive power for phase B [var] |
P_c | Base Active power for phase C [W] |
Q_c | Base Reactive power for phase C [var] |
Load Parameters for ZIP Model | |
A_pa | Percentage of Constant Power Load for Phase A (%) |
B_pa | Percentage of Constant Current Load for Phase A (%) |
C_pa | Percentage of Constant Impedance Load for Phase A (%) |
A_pb | Percentage of Constant Power Load for Phase B (%) |
B_pb | Percentage of Constant Current Load for Phase B (%) |
C_pb | Percentage of Constant Impedance Load] for Phase B (%) |
A_pc | Percentage of Constant Power Load for Phase C (%) |
B_pc | Percentage of Constant Current Load for Phase C (%) |
C_pc | Percentage of Constant Impedance Load for Phase C (%) |
Name | Description |
---|---|
DynFact | Load Curve [pu] |
A | |
B | |
C |
Three-phase delta load
This is a three-phase delta load model.
The user needs to input the active (P_ab, P_bc and P_ca) and reactive (Q_ab, Q_bc and Q_ca) powers consumed between phases. Since the values come from independent parameters, the model allows the representation of unbalanced loads.
In addition, the model allows the load to be represented as constant power, or as a ZIP model. In the first approach, the powers consumed between phases are kept constant throughout simulation. The latter approach allows the load to be represented as a sum of three terms: constant impedance, constant current and constant power. This means that, depending on voltage levels supplied, the load will consume different values of power.
Extends from ThreePhaseComponent (Partial model for inheritance of single-phase base power based on three-phase system base power.).
Name | Description |
---|---|
Power flow data | |
S_b | System base [V.A] |
S_p | Phase base [V.A] |
VA | Voltage magnitude for phase A [1] |
AngA | Voltage angle for phase A [rad] |
VB | Voltage magnitude for phase B [1] |
AngB | Voltage angle for phase B [rad] |
VC | Voltage magnitude for phase C [1] |
AngC | Voltage angle for phase C [rad] |
P_ab | Initial active power [W] |
Q_ab | Initial reactive power [var] |
P_bc | Initial active power [W] |
Q_bc | Initial reactive power [var] |
P_ca | Initial active power [W] |
Q_ca | Initial reactive power [var] |
Power flow | |
ModelType | 0- Constant Power Model, 1- ZIP Model; |
Load Parameters for ZIP Model | |
A_ab | Percentage of Constant Power Load for Line AB [%] |
B_ab | Percentage of Constant Current Load for Line AB [%] |
C_ab | Percentage of Constant Impedance Load for Line AB [%] |
A_bc | Percentage of Constant Power Load for Line BC [%] |
B_bc | Percentage of Constant Current Load for Line BC [%] |
C_bc | Percentage of Constant Impedance Load] for Line BC [%] |
A_ca | Percentage of Constant Power Load for Line CA [%] |
B_ca | Percentage of Constant Current Load for Line CA [%] |
C_ca | Percentage of Constant Impedance Load for Line CA [%] |
Name | Description |
---|---|
A | |
B | |
C |
Two-phase delta load
This is a two-phase delta load model. The model allows the user to represent active and reactive power being consumed between two phases.
The user needs to input the active (P_ab) and reactive (Q_ab) powera consumed between phases one and two (A and B).
In addition, the model allows the load to be represented as constant power, or as a ZIP model. In the first approach, the power consumed between the two phases is kept constant throughout simulation. The latter approach allows the load to be represented as a sum of three terms: constant impedance, constant current and constant power. This means that, depending on voltage levels supplied, the load will consume a different power value.
Extends from ThreePhaseComponent (Partial model for inheritance of single-phase base power based on three-phase system base power.).
Name | Description |
---|---|
Power flow data | |
S_b | System base [V.A] |
S_p | Phase base [V.A] |
VA | Voltage magnitude for phase A [1] |
AngA | Voltage angle for phase A [rad] |
VB | Voltage magnitude for phase B [1] |
AngB | Voltage angle for phase B [rad] |
P_ab | Initial active power [W] |
Q_ab | Initial reactive power [var] |
Power flow | |
ModelType | 0- Constant Power Model, 1- ZIP Model; |
Load Parameters for ZIP Model | |
A_ab | Percentage of Constant Power Load for Line AB [%] |
B_ab | Percentage of Constant Current Load for Line AB [%] |
C_ab | Percentage of Constant Impedance Load for Line AB [%] |
Name | Description |
---|---|
A | |
B |
Variable three-phase delta load
This is a three-phase delta load model that allows the user to vary the power consumed during the simulation.
The user needs to input the active (P_ab, P_bc and P_ca) and reactive (Q_ab, Q_bc and Q_ca) powers consumed between phases. Since the values come from independent parameters, the model allows the representation of unbalanced loads.
In addition, the model allows the load to be represented as constant power, or as a ZIP model. In the first approach, the load consumes the same value of active and reactive powers between phases throughout the simulation. The latter approach allows the load to be represented as a sum of three terms: constant impedance, constant current and constant power. This means that, depending on voltage levels supplied, the load will consume different values of power.
In addition to that, the real input DynFact multiplies the power being consumed by the load. This allows the load to vary over time during the simulation. It is also important to note that DynFact multiplies all variables P_ab, P_bc, P_ca, Q_ab, Q_bc and Q_ca. That means that this model does not allow load variation to be performed only in selected variables.
Extends from ThreePhaseComponent (Partial model for inheritance of single-phase base power based on three-phase system base power.).
Name | Description |
---|---|
Power flow data | |
S_b | System base [V.A] |
S_p | Phase base [V.A] |
Power flow | |
ModelType | 0- Constant Power Model, 1- ZIP Model; |
P_ab | Active power for line AB [W] |
Q_ab | Reactive power for line AB [var] |
P_bc | Active power for line BC [W] |
Q_bc | Reactive power for line BC [var] |
P_ca | Active power for line CA [W] |
Q_ca | Reactive power for line CA [var] |
Load Parameters for ZIP Model | |
A_ab | Percentage of Constant Power Load for Line AB (%) |
B_ab | Percentage of Constant Current Load for Line AB (%) |
C_ab | Percentage of Constant Impedance Load for Line AB (%) |
A_bc | Percentage of Constant Power Load for Line BC (%) |
B_bc | Percentage of Constant Current Load for Line BC (%) |
C_bc | Percentage of Constant Impedance Load] for Line BC (%) |
A_ca | Percentage of Constant Power Load for Line CA (%) |
B_ca | Percentage of Constant Current Load for Line CA (%) |
C_ca | Percentage of Constant Impedance Load for Line CA (%) |
Name | Description |
---|---|
DynFact | Load Curve [pu] |
A | |
B | |
C |
Variable balanced three-phase wye load
This is a three-phase wye load model that allows the user to vary the power consumed during the simulation.
The user needs to input the entire active (P0) and reactive (Q0) powers consumed by the load. Since the model represents a balanced load, the active and reactive powers consumed by each phase are P0/3 and Q0/3. The model allows the load to be represented as constant power only.
In addition to that, the real inputs P_in and Q_in multiply the values of active and reactive power, respectively, being consumed by the load. This allows the load to vary its consumed power over time during the simulation. Note that, since active and reactive powers can vary independently, the load's power factor can also vary. In addition, note that by changing P0 and Q0, the values of power consumed by the three phases vary identically. This makes the load to be characterized as balanced.
Extends from ThreePhaseComponent (Partial model for inheritance of single-phase base power based on three-phase system base power.).
Name | Description |
---|---|
Power flow data | |
S_b | System base [V.A] |
S_p | Phase base [V.A] |
Power flow | |
P0 | Initial Active power [W] |
Q0 | Initial Reactive power [var] |
Name | Description |
---|---|
P_in | external P [pu] |
Q_in | external Q [pu] |
A | |
B | |
C |
Variable unbalanced three-phase wye load
This is a three-phase wye load model that allows the user to vary the power consumed during the simulation.
The user needs to input the actives (P0_a, P0_b, and P0_c) and reactives (Q0_a, Q0_b, and Q0_c) powers consumed by each phase of the load. Since the values come from independent parameters, the model allows the representation of unbalanced loads. The model allows the load to be represented as constant power only.
In addition to that, the real inputs P_in and Q_in multiply the values of active and reactive power, respectively. This allows the load to vary its consumed power over time during the simulation. Note that, since active and reactive powers can vary independently, the load's power factor can also vary. In addition, note that, since P_in and Q_in have a 3x1 dimension, P0_a, P0_b, P0_c, Q0_a, Q0_b, and Q0_c can vary idependently. This makes the load to be characterized as unbalanced.
Extends from ThreePhaseComponent (Partial model for inheritance of single-phase base power based on three-phase system base power.).
Name | Description |
---|---|
Power flow data | |
S_b | System base [V.A] |
S_p | Phase base [V.A] |
Power flow | |
P0_a | Initial Active power [W] |
Q0_a | Initial Reactive power [var] |
P0_b | Initial Active power [W] |
Q0_b | Initial Reactive power [var] |
P0_c | Initial Active power [W] |
Q0_c | Initial Reactive power [var] |
Name | Description |
---|---|
P_in[3] | external P [pu] |
Q_in[3] | external Q [pu] |
A | |
B | |
C |
Variable balanced two-phase wye load
This is a two-phase wye load model that allows the user to vary the power consumed during the simulation.
The user needs to input the entire active (P0) and reactive (Q0) powers consumed by the load. Since the model represents a balanced load, the active and reactive powers consumed by each phase are P0/2 and Q0/2. The model allows the load to be represented as constant power only.
In addition to that, the real inputs P_in and Q_in multiply the values of active and reactive power, respectively, being consumed by the load. This allows the load to vary its consumed power over time during the simulation. Note that, since active and reactive powers can vary independently, the load's power factor can also vary. In addition, note that by changing P0 and Q0, the values of power consumed by phases one and two vary identically. This makes the load to be characterized as balanced.
Extends from ThreePhaseComponent (Partial model for inheritance of single-phase base power based on three-phase system base power.).
Name | Description |
---|---|
Power flow data | |
S_b | System base [V.A] |
S_p | Phase base [V.A] |
Power flow | |
P0 | Initial Active power [W] |
Q0 | Initial Reactive power [var] |
Name | Description |
---|---|
P_in | external P [pu] |
Q_in | external Q [pu] |
A | |
B |
Variable unbalanced two-phase wye load
This is a two-phase wye load model that allows the user to vary the power consumed during the simulation.
The user needs to input the actives (P0_a and P0_b) and reactives (Q0_a and Q0_b) powers consumed by each phase of the load. Since the values come from independent parameters, the model allows the representation of unbalanced loads. The model allows the load to be represented as constant power only.
In addition to that, the real inputs P_in and Q_in multiply the values of active and reactive power, respectively. This allows the load to vary its consumed power over time during the simulation. Note that, since active and reactive powers can vary independently, the load's power factor can also vary. In addition, note that, since P_in and Q_in have a 2x1 dimension, P0_a, P0_b, Q0_a and Q0_b can vary idependently. This makes the load to be characterized as unbalanced.
Extends from ThreePhaseComponent (Partial model for inheritance of single-phase base power based on three-phase system base power.).
Name | Description |
---|---|
Power flow data | |
S_b | System base [V.A] |
S_p | Phase base [V.A] |
Power flow | |
P0_a | Initial Active power [W] |
Q0_a | Initial Reactive power [var] |
P0_b | Initial Active power [W] |
Q0_b | Initial Reactive power [var] |
Name | Description |
---|---|
P_in[2] | external P [pu] |
Q_in[2] | external Q [pu] |
A | |
B |
Variable single-phase load
This is a single-phase load model that allows the user to vary the power consumed during the simulation.
The user needs to input the active (P0) and reactive (Q0) powers consumed by the load. The model allows the load to be represented as constant power only.
In addition to that, the real inputs P_in and Q_in multiply the values of active and reactive power, respectively, being consumed by the load. This allows the load to vary its consumed power over time during the simulation. Note that, since active and reactive powers can vary independently, the load's power factor can also vary.
Extends from ThreePhaseComponent (Partial model for inheritance of single-phase base power based on three-phase system base power.).
Name | Description |
---|---|
Power flow data | |
S_b | System base [V.A] |
S_p | Phase base [V.A] |
Power flow | |
P0 | Initial Active power [W] |
Q0 | Initial Reactive power [var] |
Name | Description |
---|---|
P_in | external P [pu] |
Q_in | external Q [pu] |
A |