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**,

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 [VA] |

S_p | Phase base [VA] |

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

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 [VA] |

S_p | Phase base [VA] |

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 (

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 [VA] |

S_p | Phase base [VA] |

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**,

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

Name | Description |
---|---|

Power flow data | |

S_b | System base [VA] |

S_p | Phase base [VA] |

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**,

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.

Name | Description |
---|---|

Power flow data | |

S_b | System base [VA] |

S_p | Phase base [VA] |

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 (

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.

Name | Description |
---|---|

Power flow data | |

S_b | System base [VA] |

S_p | Phase base [VA] |

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**,

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

Name | Description |
---|---|

Power flow data | |

S_b | System base [VA] |

S_p | Phase base [VA] |

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 (

In addition to that, the real inputs ** P_in** and

Name | Description |
---|---|

Power flow data | |

S_b | System base [VA] |

S_p | Phase base [VA] |

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**,

In addition to that, the real inputs ** P_in** and

Name | Description |
---|---|

Power flow data | |

S_b | System base [VA] |

S_p | Phase base [VA] |

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 (

In addition to that, the real inputs ** P_in** and

Name | Description |
---|---|

Power flow data | |

S_b | System base [VA] |

S_p | Phase base [VA] |

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

In addition to that, the real inputs ** P_in** and

Name | Description |
---|---|

Power flow data | |

S_b | System base [VA] |

S_p | Phase base [VA] |

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 (

In addition to that, the real inputs ** P_in** and

Name | Description |
---|---|

Power flow data | |

S_b | System base [VA] |

S_p | Phase base [VA] |

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 |