OpenIPSL.Electrical.ThreePhase.Buses

Multi-phase buses

Information

This package contains models for multi-phase buses.

It contains single-phase, two-phase and three-phase buses that are used as nodes in the system. It also contains one model for a three-phase infinite bus model and a measurement bus.

Extends from Modelica.Icons.Package (Icon for standard packages).

Package Content

Name	Description
InfiniteBus	Three-phase infinite bus
Bus_3Ph	Three-phase bus
Bus_2Ph	Two-phase bus
Bus_1Ph	Single-phase bus
MeasurementBus	Three-phase active and reactive power measurement bus

OpenIPSL.Electrical.ThreePhase.Buses.InfiniteBus

Three-phase infinite bus

Information

This is a three-phase infinite bus model.

An infinite bus represents a very strong system. This means that no matter how much power is drained from or injected in it, the bus will keep the values of frequency, voltage magnitude and voltage angle constant.

The infinite bus also provides the angle references that can be used in coherency studies or in power flow results.

Extends from ThreePhaseComponent (Partial model for inheritance of single-phase base power based on three-phase system base power.).

Parameters

Connectors

OpenIPSL.Electrical.ThreePhase.Buses.Bus_3Ph

Three-phase bus

Information

This is a three-phase bus model.

A bus represents a node in a power system. Therefore, this model can be used to verify voltage magnitude and angle in the three-phase nodes of the system.

Although it is not necessary, it is extremely recommended to connect one bus model between two other three-phase models.

Please, check if this bus model is the appropriate one for your system. For the connection of two- or single-phase models, two- or single-phase buses might be a better fit.

Extends from ThreePhaseComponent (Partial model for inheritance of single-phase base power based on three-phase system base power.).

Parameters

Connectors

OpenIPSL.Electrical.ThreePhase.Buses.Bus_2Ph

Two-phase bus

Information

This is a two-phase bus model.

A bus represents a node in a power system. Therefore, this model can be used to verify voltage magnitude and angle in the two-phase nodes of the system.

Although it is not necessary, it is extremely recommended to connect one bus model between two other two-phase models.

Please, check if this bus model is the appropriate one for your system. For the connection of three- or single-phase models, three- or single-phase buses might be a better fit.

Extends from ThreePhaseComponent (Partial model for inheritance of single-phase base power based on three-phase system base power.).

Parameters

Connectors

OpenIPSL.Electrical.ThreePhase.Buses.Bus_1Ph

Single-phase bus

Information

This is a single-phase bus model.

A bus represents a node in a power system. Therefore, this model can be used to verify voltage magnitude and angle in the single-phase nodes of the system.

Although it is not necessary, it is extremely recommended to connect one bus model between two other single-phase models.

Please, check if this bus model is the appropriate one for your system. For the connection of three- or two-phase models, three- or two-phase buses might be a better fit.

Extends from ThreePhaseComponent (Partial model for inheritance of single-phase base power based on three-phase system base power.).

Parameters

Connectors

OpenIPSL.Electrical.ThreePhase.Buses.MeasurementBus

Three-phase active and reactive power measurement bus

Information

This three-phase measurement device should be connected in series, between two other devices. The main features of this device are listed below:

• Pins p4, p5 and p6 work as input pins for electrical quantities coming from phases A, B and C, respectively.
• In an similar way, pins p1, p2 an p3 work as output pins for electrical quantities coming from phases A, B and C, respectively.
• Current flows from pin p4 to pin p1, from pin p5 to pin p2 and from pin p6 to pin p3.
• There is no voltage drop between the pairs of pins responsible for each phase.

The device returns, as real outputs, active and reactive powers coming from each of the three phases. All values are calculated in per unit, using the system's three-phase power base, S_b, provided in model SystemBase. The outputs are explained in the list below:

• pa and qareturns the active and reactive power, respectively, in phase A.
• pb and qb returns the active and reactive power, respectively, in phase B.
• pc and qc returns the active and reactive power, respectively, in phase C.

Extends from ThreePhaseComponent (Partial model for inheritance of single-phase base power based on three-phase system base power.).

Parameters

Connectors